unofficial mirror of guix-patches@gnu.org 
 help / color / mirror / code / Atom feed
blob 9c2a322c578fbadc28383649378968986644d861 121706 bytes (raw)
name: gnu/packages/game-development.scm 	 # note: path name is non-authoritative(*)

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
 
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 Tomáš Čech <sleep_walker@suse.cz>
;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2015, 2018, 2021 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015, 2018 Alex Kost <alezost@gmail.com>
;;; Copyright © 2015, 2016, 2017 David Thompson <davet@gnu.org>
;;; Copyright © 2016, 2017, 2018, 2019, 2020, 2021 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016, 2017, 2020 Kei Kebreau <kkebreau@posteo.net>
;;; Copyright © 2016, 2018, 2019 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2016, 2017, 2018 Julian Graham <joolean@gmail.com>
;;; Copyright © 2017–2021 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2017 Manolis Fragkiskos Ragkousis <manolis837@gmail.com>
;;; Copyright © 2017 Peter Mikkelsen <petermikkelsen10@gmail.com>
;;; Copyright © 2017 Arun Isaac <arunisaac@systemreboot.net>
;;; Copyright © 2017, 2019 Rutger Helling <rhelling@mykolab.com>
;;; Copyright © 2018, 2022 Marius Bakke <marius@gnu.org>
;;; Copyright © 2019 Pierre Neidhardt <mail@ambrevar.xyz>
;;; Copyright © 2019, 2020, 2021 Liliana Marie Prikler <liliana.prikler@gmail.com>
;;; Copyright © 2019 Jethro Cao <jethrocao@gmail.com>
;;; Copyright © 2020-2023 Nicolas Goaziou <mail@nicolasgoaziou.fr>
;;; Copyright © 2020 Timotej Lazar <timotej.lazar@araneo.si>
;;; Copyright © 2020 Giacomo Leidi <goodoldpaul@autistici.org>
;;; Copyright © 2021 Alexandru-Sergiu Marton <brown121407@posteo.ro>
;;; Copyright © 2021 Dmitry Polyakov <polyakov@liltechdude.xyz>
;;; Copyright © 2020-2022 James Smith <jsubuntuxp@disroot.org>
;;; Copyright © 2021 Ekaitz Zarraga <ekaitz@elenq.tech>
;;; Copyright © 2021 Andy Tai <atai@atai.org>
;;; Copyright © 2022 Felix Gruber <felgru@posteo.net>
;;; Copyright © 2022 Jai Vetrivelan <jaivetrivelan@gmail.com>
;;; Copyright © 2022 dan <i@dan.games>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages game-development)
  #:use-module ((srfi srfi-1) #:hide (zip))
  #:use-module (ice-9 match)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages)
  #:use-module (guix gexp)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix svn-download)
  #:use-module (guix utils)
  #:use-module (guix build-system cmake)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system python)
  #:use-module (guix build-system scons)
  #:use-module (gnu packages)
  #:use-module (gnu packages assembly)
  #:use-module (gnu packages audio)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages base)
  #:use-module (gnu packages bash)
  #:use-module (gnu packages boost)
  #:use-module (gnu packages build-tools)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages check)
  #:use-module (gnu packages curl)
  #:use-module (gnu packages documentation)
  #:use-module (gnu packages fltk)
  #:use-module (gnu packages fonts)
  #:use-module (gnu packages fontutils)
  #:use-module (gnu packages freedesktop)
  #:use-module (gnu packages fribidi)
  #:use-module (gnu packages dbm)
  #:use-module (gnu packages gawk)
  #:use-module (gnu packages gettext)
  #:use-module (gnu packages gl)
  #:use-module (gnu packages glib)
  #:use-module (gnu packages gnome)
  #:use-module (gnu packages gnunet)
  #:use-module (gnu packages graphics)
  #:use-module (gnu packages graphviz)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages guile)
  #:use-module (gnu packages image)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages llvm)
  #:use-module (gnu packages lua)
  #:use-module (gnu packages m4)
  #:use-module (gnu packages mp3)
  #:use-module (gnu packages multiprecision)
  #:use-module (gnu packages music)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages pcre)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages pulseaudio)
  #:use-module (gnu packages python)
  #:use-module (gnu packages python-web)
  #:use-module (gnu packages python-xyz)
  #:use-module (gnu packages readline)
  #:use-module (gnu packages qt)
  #:use-module (gnu packages sdl)
  #:use-module (gnu packages sphinx)
  #:use-module (gnu packages stb)
  #:use-module (gnu packages texinfo)
  #:use-module (gnu packages textutils)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages video)
  #:use-module (gnu packages web)
  #:use-module (gnu packages wxwidgets)
  #:use-module (gnu packages xdisorg)
  #:use-module (gnu packages xiph)
  #:use-module (gnu packages xml)
  #:use-module (gnu packages xorg))

(define-public bullet
  (package
    (name "bullet")
    (version "3.17")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                     (url "https://github.com/bulletphysics/bullet3/")
                     (commit version)))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "0x1ghxbkvqr910sp01sjf4hlfy4sdgn2jx2qf0dsi697bzq1f3mr"))
              (modules '((guix build utils)))
              (snippet
               '(begin
                  (for-each delete-file (find-files "build3" "premake*"))
                  (with-directory-excursion "examples/ThirdPartyLibs"
                    (for-each delete-file-recursively
                              '("Gwen" "clsocket" "enet" "glad" "imgui"
                                "lua-5.2.3" "midi" "minizip" "openvr"
                                "optionalX11" "serial" "zlib")))

                  ;; Tests fail on linking, cannot find -lBussIK.
                  (substitute* "test/CMakeLists.txt"
                    ((" InverseDynamics")
                     "../examples/ThirdPartyLibs/BussIK InverseDynamics"))
                  ;  (("SharedMemory") ""))
                  #t))))
    (build-system cmake-build-system)
    (arguments
     '(#:configure-flags (list "-DBUILD_SHARED_LIBS=ON"
                               "-DBUILD_CPU_DEMOS=OFF"
                               "-DBUILD_OPENGL3_DEMOS=OFF"
                               "-DBUILD_BULLET2_DEMOS=OFF"
                               ;; openmw 0.47.0 requires bullet to be built with
                               ;; double precision.
                               ;; See <https://issues.guix.gnu.org/52953> for
                               ;; more information.
                               "-DUSE_DOUBLE_PRECISION=ON"
                               ;; Extras/BulletRoboticsGUI needs files from
                               ;; ThirdPartyLibs
                               "-DBUILD_BULLET_ROBOTICS_GUI_EXTRA=OFF"
                               ;; Extras/BulletRobotics needs files from
                               ;; ThirdPartyLibs
                               "-DBUILD_BULLET_ROBOTICS_EXTRA=OFF"
                               (string-append  "-DCMAKE_CXX_FLAGS=-fPIC "
                                               (or (getenv "CXXFLAGS") "")))
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'remove-failing-tests
           ;; These tests fail specifically after removing 3rd party code.
           (lambda _
             (substitute* "test/SharedMemory/CMakeLists.txt"
               (("ADD_TEST") "# ADD_TEST"))
             (substitute* "test/InverseDynamics/CMakeLists.txt"
               (("ADD_TEST\\(Test_BulletInverseForward")
                "# ADD_TEST(Test_BulletInverseForward"))
             #t)))))
    (inputs
     (list glu libx11 mesa))
    (home-page "https://pybullet.org/wordpress/")
    (synopsis "3D physics engine library")
    (description
     "Bullet is a physics engine library usable for collision detection.  It
is used in some video games and movies.")
    (license license:zlib)))

(define-public dds
  (package
    (name "dds")
    (version "2.9.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/dds-bridge/dds")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32
         "1iv09qic43nvla02lm8zgnkqpjgnc95p8zh3wyifmnmlh1rz02yj"))))
    (build-system gnu-build-system)
    (arguments
     (list #:phases
           #~(modify-phases %standard-phases
               (add-after 'unpack 'chdir
                 (lambda _
                   (chdir "src")))
               (replace 'configure
                 ;; Configuration is done by copying the appropriate
                 ;; make file in the working directory.  There is no
                 ;; configure script.
                 (lambda _
                   (copy-file "Makefiles/Makefile_linux_shared"
                              "Makefile")))
               (replace 'check
                 ;; There is no "check" traget.  We must compile
                 ;; a "dtest" program and apply it on a data set.
                 (lambda* (#:key tests? #:allow-other-keys)
                   (when tests?
                     (install-file "libdds.so" "../test")
                     (with-directory-excursion "../test"
                       (copy-file "Makefiles/Makefile_linux"
                                  "Makefile")
                       (substitute* "Makefile"
                         (("-Werror") ""))
                       (invoke "make")
                       (invoke "./dtest" "-f" "../hands/list100.txt")))))
               (replace 'install
                 ;; "install" target merely moves ".so" file around
                 ;; the source directory.  We install it in the store,
                 ;; along with all shipped documentation (which cannot
                 ;; be built from source unfortunately).
                 (lambda _
                   (install-file "libdds.so"
                                 (string-append #$output "/lib"))
                   (let ((doc (string-append #$output
                                             "/share/doc/"
                                             #$name "-" #$version)))
                     (install-file "../LICENSE" doc)
                     (copy-recursively "../doc" doc)))))))
    (native-inputs
     (list gawk procps))
    (inputs
     (list boost))
    (home-page "https://privat.bahnhof.se/wb758135/")
    (synopsis "Double dummy solver for the bridge card game")
    (description "DDS is a double-dummy solver of bridge hands.  It supports
single-threading and multi-threading for improved performance.  DDS
offers a wide range of functions, including par-score calculations.")
    (license license:asl2.0)))

(define-public deutex
  (package
   (name "deutex")
   (version "5.2.2")
   (source
    (origin
      (method url-fetch)
      (uri (string-append "https://github.com/Doom-Utils/deutex"
                          "/releases/download/v" version "/"
                          "deutex-" version ".tar.zst"))
      (sha256
       (base32 "0psb2za6ldrlak7s8pjvli98ij5yiwjx8j1ms2v7rj9yadx0xv8h"))))
   (build-system gnu-build-system)
   (inputs
    (list libpng))
   (native-inputs
    (list asciidoc pkg-config zstd))
   (home-page "https://github.com/Doom-Utils/deutex")
   (synopsis "WAD file composer for Doom and related games")
   (description
    "DeuTex is a wad composer for Doom, Heretic, Hexen and Strife. It can be
used to extract the lumps of a wad and save them as individual files.
Conversely, it can also build a wad from separate files.  When extracting a
lump to a file, it does not just copy the raw data, it converts it to an
appropriate format (such as PPM for graphics, Sun audio for samples, etc.).
Conversely, when it reads files for inclusion in pwads, it does the necessary
conversions (for example, from PPM to Doom picture format).  In addition,
DeuTex has functions such as merging wads, etc.")
   (license license:gpl2+)))

(define-public grfcodec
  ;; Latest release 6.0.6 requires an older boost and does not build with our
  ;; newer GCC.
  (let ((commit "7ded8ebd1447bd2e7c0f4b587be0c0510397bdd0")
        (revision "0"))
    (package
      (name "grfcodec")
      (version (git-version "6.0.6" revision commit))
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
                (url "https://github.com/OpenTTD/grfcodec")
                (commit commit)))
         (file-name (git-file-name name version))
         (sha256
          (base32 "12bf5y7d83plrlssdlcj83w4yxmg5jp1w2p8570l92hy9mkcfmb9"))
         (modules '((guix build utils)))
         (snippet
           `(begin
              ;; The sources are not a git repository
              (substitute* "generate_version.cmake"
                (("\\$\\{GIT.*describe.*") (string-append "echo \"" ,version "\"\n"))
                (("\\$\\{GIT.*show.*") "echo \"Not shown for reproducibility.\"\n"))
              (substitute* "CMakeLists.txt"
                (("find_package\\(Git REQUIRED\\)") ""))))))
      (build-system cmake-build-system)
      (arguments
       '(#:tests? #f                      ;no check target
         #:phases
         (modify-phases %standard-phases
           (replace 'install              ;no install target
             (lambda* (#:key outputs #:allow-other-keys)
               (let* ((out (assoc-ref outputs "out"))
                      (bin (string-append out "/bin"))
                      (doc (string-append out "/share/doc"))
                      (man (string-append out "/share/man/man1")))
                 (for-each (lambda (file)
                             (install-file file bin))
                           '("grfcodec" "grfid" "grfstrip" "nforenum"))
                 (with-directory-excursion "../source"
                   (install-file "COPYING" doc)
                   (with-directory-excursion "docs"
                     (for-each (lambda (file)
                                 (install-file (string-append file ".txt") doc))
                               '("auto_correct" "commands" "grf" "grfcodec" "grftut"
                                 "readme" "readme.rpn"))
                     (for-each (lambda (file)
                                 (install-file file man))
                               (find-files "." "\\.1"))))))))))
      (inputs
       (list boost libpng zlib))
      (synopsis "GRF development tools")
      (description
       "The @dfn{Graphics Resource File} (GRF) development tools are a set of
tools for developing (New)GRFs. It includes a number of smaller programs, each
with a specific task:
@enumerate
@item @code{grfcodec} decodes and encodes GRF files for OpenTTD.
@item @code{grfid} extracts the so-called \"GRF ID\" from a GRF.
@item @code{grfstrip} strips all sprites from a GRF.
@item @code{nforenum} checks NFO code for errors, making corrections when
necessary.
@end enumerate")
      (home-page "https://dev.openttdcoop.org/projects/grfcodec")
      ;; GRFCodec, GRFID, and GRFStrip are exclusively under the GPL2.
      ;; NFORenum is under the GPL2+.
      ;; The MD5 implementation contained in GRFID is under the zlib license.
      (license (list license:gpl2 license:gpl2+ license:zlib)))))

(define-public catcodec
  (package
    (name "catcodec")
    (version "1.0.5")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://binaries.openttd.org/extra/catcodec/"
                           version "/catcodec-" version "-source.tar.xz"))
       (sha256
        (base32 "1qg0c2i4p29sxj0q6qp2jynlrzm5pphz2xhcjqlxa69ycrnlxzs7"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no tests
       #:make-flags (list (string-append "prefix=" %output))
       #:phases (modify-phases %standard-phases
                  (delete 'configure))))
    (home-page "https://dev.openttdcoop.org/projects/catcodec")
    (synopsis "Encode/decode OpenTTD sounds")
    (description "catcodec encodes and decodes sounds for OpenTTD.  These
sounds are not much more than some metadata (description and filename) and raw
PCM data.")
    (license license:gpl2)))

(define-public gzochi
  (package
    (name "gzochi")
    (version "0.13")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://savannah/gzochi/gzochi-"
                                  version ".tar.gz"))
              (sha256
               (base32
                "1vcvf04qqzs3q8kaild2x7qvkwc6bwzfsisb78147b8z747j7hj0"))))
    (build-system gnu-build-system)
    (arguments
     '(#:phases (modify-phases %standard-phases
                  (add-before 'build 'no-Werror
                    (lambda _
                      ;; Don't abort builds due to things like GLib
                      ;; deprecation warnings.
                      (substitute* (find-files "." "^Makefile\\.in$")
                        (("-Werror") ""))
                      #t)))))
    (native-inputs (list pkg-config))
    (inputs (list bdb
                  glib
                  gmp
                  guile-3.0
                  libmicrohttpd
                  ncurses
                  sdl
                  zlib))
    (home-page "https://www.nongnu.org/gzochi/")
    (synopsis "Scalable middleware for multiplayer games")
    (description
     "gzochi is a framework for developing massively multiplayer online games.
A server container provides services to deployed games, which are written in
Guile Scheme, that abstract and simplify some of the most challenging and
error-prone aspects of online game development: Concurrency, data persistence,
and network communications.  A very thin client library can be embedded to
provide connectivity for client applications written in any language.")
    (license license:gpl3+)))

(define-public nml
  (package
    (name "nml")
    (version "0.7.2")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "nml" version))
       (sha256
        (base32 "1kgzkv8pc0blck8c6iqq1idx1nrxyjw2vbnrdisnxizi6zds5l73"))))
    (build-system python-build-system)
    ;; TODO: Fix test that fails with
    ;; "AttributeError: partially initialized module 'nml.nmlop' has no
    ;; attribute 'ADD' (most likely due to a circular import)"
    (arguments
     '(#:tests? #f))
    (propagated-inputs
     (list python-pillow python-ply))
    (home-page "https://github.com/OpenTTD/nml")
    (synopsis "NML compiler")
    (description
     "@dfn{NewGRF Meta Language} (NML) is a python-based compiler, capable of
compiling NML files (along with their associated language, sound and graphic
files) into @file{.grf} and/or @file{.nfo} files.")
    (license license:gpl2+)))

(define-public python-sge
  (package
    (name "python-sge")
    (version "2.0.post0")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "sge" version))
       (sha256
        (base32
         "0s5d5qzlzfmqb10iyrqi62n36ll94d99xjaznp5ca6dz1b91qkvr"))))
    (build-system python-build-system)
    (propagated-inputs
     (list python-pygame python-uniseg))
    (home-page "https://python-sge.github.io/")
    (synopsis "2D game engine for Python")
    (description
     "The SGE Game Engine (\"SGE\", pronounced like \"Sage\") is a
general-purpose 2D game engine.  It takes care of several details for you so
you can focus on the game itself.  This makes more rapid game development
possible, and it also makes the SGE easy to learn.")
    (license license:lgpl3+)))

(define-public python-tmx
  (package
    (name "python-tmx")
    (version "1.10")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://savannah/python-tmx/"
                           (version-major+minor version) "/tmx-"
                           version ".tar.gz"))
       (sha256
        (base32
         "073q0prg1nzlkga2b45vhscz374206qh4x68ccg00mxxwagn64z0"))))
    (build-system python-build-system)
    (propagated-inputs
     (list python-six))
    (home-page "https://python-tmx.nongnu.org")
    (synopsis "Python library for the @code{Tiled} TMX format")
    (description
     "Python TMX reads and writes the @code{Tiled} TMX format in a simple way.
This is useful for map editors or generic level editors, and it's also useful
for using a map editor or generic level editor like Tiled to edit your game's
levels.")
    (license (list license:asl2.0
                   ;; Documentation (only available in the source tarball) is
                   ;; under the CC0 license.
                   license:cc0))))

(define-public python-xsge
  (package
    (name "python-xsge")
    (version "2020.09.07")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/python-sge/xsge"
                                  "/releases/download/v" version
                                  "/xsge-" version ".zip"))
              (sha256
               (base32
                "136xgy3f9vw636wxpqbha022avk0wyxw63mm3a2dvwhh90s716f9"))))
    (build-system python-build-system)
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         ;; xSGE's setup.py script does not support one of the Python build
         ;; system's default flags, "--single-version-externally-managed".
         (replace 'install
           (lambda* (#:key outputs #:allow-other-keys)
             (invoke "python" "setup.py" "install"
                     (string-append "--prefix=" (assoc-ref outputs "out"))
                     "--root=/"))))
       #:tests? #f)) ; no check target
    (native-inputs
     (list unzip))
    (propagated-inputs
     (list python-sge))
    (home-page "https://python-sge.github.io/")
    (synopsis "Extensions for the SGE Game Engine")
    (description
     "xSGE is a collection of modules that make doing certain tasks with the SGE
Game Engine easier.  In addition to SGE's conveniences, the user has access to a
GUI toolkit, lighting and physics frameworks and @code{Tiled} TMX format
support.")
    (license license:gpl3+)))

(define-public slade
  (package
    (name "slade")
    (version "3.2.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/sirjuddington/SLADE")
             (commit version)))
       (sha256 (base32 "11ab38nv190lpvkdba5r2gckdrk4h15pri0zzslz7zy8qzg5fm18"))
       (file-name (git-file-name name version))))
    (build-system cmake-build-system)
    (arguments
     (list #:configure-flags
           #~(list "-DWX_GTK3=ON" "-DNO_WEBVIEW=ON"
                   (string-append "-DWITH_WXPATH="
                                  #$(this-package-input "wxwidgets") "/bin")
                   (string-append "-DwxWidgets_LIBRARIES="
                                  #$(this-package-input "wxwidgets") "/lib"))
           #:phases
           #~(modify-phases %standard-phases
               (add-after 'install 'wrap-with-x11-gdk-backend
                 ;; Set GDK_BACKEND to x11 to prevent crash on Wayland.
                 ;; See https://github.com/sirjuddington/SLADE/issues/1097 for
                 ;; details.
                 (lambda _
                   (wrap-program (string-append #$output "/bin/slade")
                     '("GDK_BACKEND" = ("x11"))))))
           #:tests? #f)) ;; No test suite.
    (inputs
     (list bash-minimal
           curl
           fluidsynth
           freeimage
           ftgl
           glew
           gtk+
           lua
           mpg123
           sfml
           wxwidgets))
    (native-inputs
     (list pkg-config which zip))
    (home-page "https://slade.mancubus.net")
    (synopsis "Doom game data editor")
    (description "SLADE3 is a modern editor for Doom-engine based games and
source ports.  It has the ability to view, modify, and write many different game-
specific formats, and even convert between some of them, or from/to other generic
formats such as PNG.")
    (license license:gpl2+)))

(define-public tiled
  (package
    (name "tiled")
    (version "1.8.6")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/mapeditor/tiled")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "0iimfj4kbhmjk94586fqz11bk4i7v0zsxby8agx7450cqlh2y3zi"))))
    (build-system gnu-build-system)
    (inputs
     (list qtbase-5 qtdeclarative-5 qtsvg-5 zlib))
    (native-inputs
     (list qttools-5))
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         (replace 'configure
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (substitute* "translations/translations.pro"
               (("LRELEASE =.*")
                (string-append "LRELEASE = "
                               (search-input-file inputs "/bin/lrelease")
                               "\n")))
             (let ((out (assoc-ref outputs "out")))
               (invoke "qmake"
                       (string-append "PREFIX=" out))))))))
    (home-page "https://www.mapeditor.org/")
    (synopsis "Tile map editor")
    (description
     "Tiled is a general purpose tile map editor.  It is meant to be used for
editing maps of any tile-based game, be it an RPG, a platformer or a Breakout
clone.")

    ;; As noted in 'COPYING', part of it is under GPLv2+, while the rest is
    ;; under BSD-2.
    (license license:gpl2+)))

(define-public tsukundere
  (package
    (name "tsukundere")
    (version "0.4.3")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://gitlab.com/lilyp/tsukundere")
                    (commit version)))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1lq2rs33s6l6y0hwwkv8pppgq2ki0q5kzj11s90yivi8g8g201af"))))
    (build-system gnu-build-system)
    (arguments
     `(#:modules ((ice-9 match)
                  (srfi srfi-1)
                  ((guix build guile-build-system)
                   #:select (target-guile-effective-version))
                  ,@%gnu-build-system-modules)
       #:imported-modules ((guix build guile-build-system)
                           ,@%gnu-build-system-modules)
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-command
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let* ((scm (lambda (in)
                           (string-append in "/share/guile/site/"
                                          (target-guile-effective-version))))
                    (ccache (lambda (in)
                              (string-append in "/lib/guile/"
                                             (target-guile-effective-version)
                                             "/site-ccache")))
                    (pkgs
                     (cons
                      (assoc-ref outputs "out")
                      (filter-map
                       (match-lambda
                         (("guile" . pkg) pkg)
                         ((label . pkg)
                          (and (string-prefix? "guile-" label) pkg)))
                       inputs))))
               (substitute* "tsukundere.scm"
                 (("exec guile (.*)" _ args)
                  (string-append
                   ;; XXX: Prevent Guile-SDL2 from blowing up by not knowing
                   ;;      where the SDL2 libaries are.
                   "unset LD_LIBRARY_PATH\n"
                   (format #f "export GUILE_LOAD_PATH=\"~@?\"~%"
                           "~{~a~^:~}" (map scm pkgs))
                   (format #f "export GUILE_LOAD_COMPILED_PATH=\"~@?\"~%"
                           "~{~a~^:~}" (map ccache pkgs))
                   "exec "
                   (assoc-ref inputs "guile")
                   "/bin/guile " args)))
               #t))))))
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("gettext" ,gettext-minimal)
       ("guile" ,guile-3.0)
       ("libtool" ,libtool)
       ("pkg-config" ,pkg-config)
       ("texinfo" ,texinfo)))
    (inputs
     `(("guile-sdl2" ,guile3.0-sdl2)
       ("guile" ,guile-3.0)
       ("pango" ,pango)
       ("sdl2" ,sdl2)))
    (home-page "https://gitlab.com/lilyp/tsukundere")
    (synopsis "Visual novel engine")
    (description "Tsukundere is a game engine geared heavily towards the
development of visual novels, written on top of Guile-SDL2.  It is still
experimental.")
    (license license:lgpl3+)))

(define-public sfml
  (package
    (name "sfml")
    (version "2.5.1")
    (source (origin
              (method git-fetch)
              ;; Do not fetch the archives from
              ;; http://mirror0.sfml-dev.org/files/ because files there seem
              ;; to be changed in place.
              (uri (git-reference
                    (url "https://github.com/SFML/SFML")
                    (commit version)))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "0abr8ri2ssfy9ylpgjrr43m6rhrjy03wbj9bn509zqymifvq5pay"))
              (modules '((guix build utils)))
              (snippet
               '(begin
                  ;; Ensure system libraries are used.
                  (delete-file-recursively "extlibs")
                  #t))))
    (build-system cmake-build-system)
    (arguments
     '(#:configure-flags
       (list "-DSFML_INSTALL_PKGCONFIG_FILES=TRUE"
             "-DSFML_OS_PKGCONFIG_DIR=lib/pkgconfig")
       #:tests? #f)) ; no tests
    (native-inputs
     (list pkg-config))
    (inputs
     `(("mesa" ,mesa)
       ("glew" ,glew)
       ("libx11" ,libx11)
       ("xcb-util-image" ,xcb-util-image)
       ("libxrandr" ,libxrandr)
       ("eudev" ,eudev)
       ("libjpeg" ,libjpeg-turbo)
       ("libsndfile" ,libsndfile)
       ("stb-image" ,stb-image)
       ("stb-image-write" ,stb-image-write)))
    (propagated-inputs
     ;; In Requires.private of pkg-config files.
     (list flac freetype libvorbis openal))
    (home-page "https://www.sfml-dev.org")
    (synopsis "Simple and Fast Multimedia Library")
    (description
     "SFML provides a simple interface to the various computer components,
to ease the development of games and multimedia applications.  It is composed
of five modules: system, window, graphics, audio and network.")
    (license license:zlib)))

(define-public csfml
  (package
    (name "csfml")
    (version "2.5.1")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/SFML/CSFML")
                    (commit version)))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1wj1p798myyavld2xdhvvflb5h4nf1vgxxzs6nh5qad44vj9b3kb"))))
    (build-system cmake-build-system)
    (arguments
     (list #:configure-flags #~(list "-DCSFML_BUILD_DOC=TRUE")
           #:tests? #f)) ;no tests
    (native-inputs (list doxygen))
    (inputs (list sfml))
    (synopsis "C bindings for the SFML multimedia library")
    (description
     "CSFML is the official C binding to the SFML libraries.  SFML provides a
simple interface to the various computer components, to ease the development of
games and multimedia applications.  It is composed of five modules: system,
window, graphics, audio and network.")
    (home-page "https://www.sfml-dev.org/download/csfml/")
    (license license:zlib)))

(define-public sfxr
  (package
    (name "sfxr")
    (version "1.2.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "http://www.drpetter.se/files/sfxr-sdl-1.2.1.tar.gz"))
              (sha256
               (base32
                "0dfqgid6wzzyyhc0ha94prxax59wx79hqr25r6if6by9cj4vx4ya"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases (modify-phases %standard-phases
                  (delete 'configure) ; no configure script
                  (add-before 'build 'patch-makefile
                    (lambda* (#:key outputs #:allow-other-keys)
                      (let ((out (assoc-ref outputs "out")))
                        (substitute* "Makefile"
                          (("\\$\\(DESTDIR\\)/usr") out))
                        (substitute* "main.cpp"
                          (("/usr/share")
                           (string-append out "/share")))
                        #t))))
       #:tests? #f)) ; no tests
    (native-inputs
     (list pkg-config desktop-file-utils))
    (inputs
     (list sdl gtk+))
    (synopsis "Simple sound effect generator")
    (description "Sfxr is a tool for quickly generating simple sound effects.
Originally created for use in video game prototypes, it can generate random
sounds from presets such as \"explosion\" or \"powerup\".")
    (home-page "https://www.drpetter.se/project_sfxr.html")
    (license license:expat)))

(define-public surgescript
  (package
    (name "surgescript")
    (version "0.5.6.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/alemart/surgescript")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1p1pxb4iixzq7z14bpy32dx3dhfaaf6mcz4y3g3g09bkdmm1ys6j"))))
     (build-system cmake-build-system)
     (arguments
      (list #:tests? #f)) ; there are no tests
     (home-page "https://docs.opensurge2d.org")
     (synopsis "Scripting language for games")
     (description "@code{SurgeScript} is a dynamically typed object-oriented
scripting language designed for games.  Each object is a state machine that
can be customized by attaching other objects.  The language supports automatic
garbage collection and can be extended with plugins.")
    (license license:asl2.0)))

(define-public physfs
  (package
    (name "physfs")
    (version "3.0.2")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://icculus.org/physfs/downloads/physfs-"
                    version ".tar.bz2"))
              (file-name (string-append name "-" version ".tar.gz"))
              (sha256
               (base32
                "0qzqz4r88gvd8m7sh2z5hvqcr0jfr4wb2f77c19xycyn0rigfk9h"))))
    (build-system cmake-build-system)
    (arguments
     '(#:tests? #f                      ; no check target
       #:configure-flags '("-DPHYSFS_BUILD_STATIC=OFF")
       #:phases (modify-phases %standard-phases
                  (add-after 'unpack 'patch-CMakeLists.txt
                    (lambda _
                      (substitute* "CMakeLists.txt"
                        ;; XXX: For some reason CMakeLists.txt disables
                        ;; RUNPATH manipulation when the compiler is GCC.
                        (("CMAKE_COMPILER_IS_GNUCC") "FALSE"))
                      #t)))))
    (inputs
     (list zlib))
    (native-inputs
     (list doxygen))
    (home-page "https://icculus.org/physfs")
    (synopsis "File system abstraction library")
    (description
     "PhysicsFS is a library to provide abstract access to various archives.
It is intended for use in video games.  For security, no file writing done
through the PhysicsFS API can leave a defined @emph{write directory}.  For
file reading, a @emph{search path} with archives and directories is defined,
and it becomes a single, transparent hierarchical file system.  So archive
files can be accessed in the same way as you access files directly on a disk,
and it makes it easy to ship a new archive that will override a previous
archive on a per-file basis.")
    (license license:zlib)))

(define-public love
  (package
    (name "love")
    (version "11.4")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://github.com/love2d/love/releases/download/"
                           version "/love-" version "-linux-src.tar.gz"))
       (sha256
        (base32 "0sak3zjpzfs3ys315m8qvszi946fz76jcpsb58j11wplyp5fwbz3"))))
    (build-system gnu-build-system)
    (native-inputs
     (list pkg-config))
    (inputs
     (list devil
           freetype
           libmodplug
           libtheora
           libvorbis
           luajit
           mesa
           mpg123
           openal
           sdl2
           zlib))
    (synopsis "2D game framework for Lua")
    (description "LÖVE is a framework for making 2D games in the Lua
programming language.")
    (home-page "https://love2d.org/")
    (license license:zlib)))

(define-public love-nuklear
  (package
    (name "love-nuklear")
    (version "2.6.1")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/keharriso/love-nuklear/")
                    (commit (string-append "v" version))
                    (recursive? #t)))
              ;; NOTE: the HEAD of the Nuklear git-submodule is at commit
              ;; "adc52d710fe3c87194b99f540c53e82eb75c2521" of Oct 1 2019
              (file-name (git-file-name name version))
              (sha256
               (base32
                "090xp5c975155hd1pa7bdssdlawvygs5s6icdkwbyc8il5kg5kgv"))))
    (build-system cmake-build-system)
    (arguments
     `(#:build-type "Release"
       #:tests? #f
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-cmake
           (lambda _
             (substitute* "CMakeLists.txt"
               (("DESTINATION .") "DESTINATION lib/love")))))))
    (inputs
     (list luajit))
    (synopsis "Lightweight immediate mode GUI for LÖVE games")
    (description "LÖVE is a Lua framework for making 2D games.  Nuklear
is a minimal state immediate mode graphical user interface toolkit.  This
package is the Nuklear bindings for LÖVE created by Kevin Harrison.")
    (home-page "https://github.com/keharriso/love-nuklear/")
    (license license:expat)))

(define-public allegro-4
  (package
    (name "allegro")
    (version "4.4.3.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/liballeg/allegro5/"
                                  "releases/download/" version "/allegro-"
                                  version ".tar.gz"))
              (sha256
               (base32
                "1m6lz35nk07dli26kkwz3wa50jsrxs1kb6w1nj14a911l34xn6gc"))))
    (build-system cmake-build-system)
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-build-system
           (lambda _
             ;; Build addons as shared libraries.  Trying to set ADDON_LINKAGE
             ;; via a command line option doesn't work because it is
             ;; unconditionally clobbered in the build script.
             (substitute* '("CMakeLists.txt")
               (("ADDON_LINKAGE STATIC")
                "ADDON_LINKAGE SHARED")))))))
    (inputs
     (list glu libpng libvorbis mesa zlib))
    (synopsis "Game programming library")
    (description "Allegro is a library mainly aimed at video game and
multimedia programming.  It handles common, low-level tasks such as creating
windows, accepting user input, loading data, drawing images, playing sounds,
etc.")
    (home-page "https://liballeg.org")
    (license license:giftware)))

(define-public allegro
  (package
    (name "allegro")
    (version "5.2.7.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/liballeg/allegro5/releases"
                                  "/download/" version "/allegro-"
                                  version ".tar.gz"))
              (sha256
               (base32
                "034pmbmbq6jagpp4lhnyjqmf8gcz5fx74d9rknrm7d4wv4cv7qy1"))))
    (build-system cmake-build-system)
    (arguments `(#:tests? #f))          ; there are no tests
    (inputs
     ;; FIXME: Add the following optional inputs: xinput2, opensl, dumb
     `(("flac" ,flac)
       ("freetype" ,freetype)
       ("glu" ,glu)
       ("gtk" ,gtk+)
       ("libjpeg" ,libjpeg-turbo)
       ("libpng" ,libpng)
       ("libtheora" ,libtheora)
       ("libvorbis" ,libvorbis)
       ("libxcursor" ,libxcursor)
       ("libxinerama" ,libxinerama)
       ("libxrandr" ,libxrandr)
       ("mesa" ,mesa)
       ("openal" ,openal)
       ("physfs" ,physfs)
       ("zlib" ,zlib)))
    (native-inputs
     (list pkg-config))
    (synopsis "Game programming library")
    (description "Allegro is a library mainly aimed at video game and
multimedia programming.  It handles common, low-level tasks such as creating
windows, accepting user input, loading data, drawing images, playing sounds,
etc.")
    (home-page "https://liballeg.org")
    (license license:bsd-3)))

(define-public allegro-5.0
  (package (inherit allegro)
    (name "allegro")
    (version "5.0.11")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/liballeg/allegro5/releases"
                                  "/download/" version "/allegro-"
                                  (if (equal? "0" (string-take-right version 1))
                                    (string-drop-right version 2)
                                    version)
                                  ".tar.gz"))
              (patches (search-patches
                        "allegro-mesa-18.2.5-and-later.patch"))
              (sha256
               (base32
                "0cd51qrh97jrr0xdmnivqgwljpmizg8pixsgvc4blqqlaz4i9zj9"))))))

(define-public aseprite
  (package
    (name "aseprite")
    (version "1.1.7") ; After 1.1.7 the source is no longer distributed under the GPL.
    ;; TODO: Unbundle third party software.
    (source (origin
              (method url-fetch/zipbomb)
              (uri (string-append "https://github.com/aseprite/aseprite"
                                  "/releases/download/v" version
                                  "/Aseprite-v" version "-Source.zip"))
              (sha256
               (base32
                "1plss4i1lfxcznv9p0pip1bkhj7ipw7jlhsh5avd6dzw079l4nvv"))))
    (build-system cmake-build-system)
    (arguments
     '(#:configure-flags
       ;; Use shared libraries instead of building bundled source.
       (list "-DWITH_WEBP_SUPPORT=1"
             "-DUSE_SHARED_CURL=1"
             "-DUSE_SHARED_GIFLIB=1"
             "-DUSE_SHARED_JPEGLIB=1"
             "-DUSE_SHARED_ZLIB=1"
             "-DUSE_SHARED_LIBPNG=1"
             "-DUSE_SHARED_LIBLOADPNG=1"
             "-DUSE_SHARED_LIBWEBP=1"
             "-DUSE_SHARED_TINYXML=1"
             "-DUSE_SHARED_PIXMAN=1"
             "-DUSE_SHARED_FREETYPE=1"
             "-DUSE_SHARED_ALLEGRO4=1"
             "-DENABLE_UPDATER=0" ; no auto-updates
             (string-append "-DFREETYPE_INCLUDE_DIR="
                            (assoc-ref %build-inputs "freetype")
                            "/include/freetype2"))))
    (native-inputs
     (list pkg-config))
    ;; TODO: Use a patched Allegro 4 that supports window resizing.  This
    ;; patched version is bundled with Aseprite, but the patches should be
    ;; extracted and applied on top of a standalone Allegro 4 package.
    (inputs
     `(("allegro" ,allegro-4)
       ("curl" ,curl)
       ("freetype" ,freetype)
       ("giflib" ,giflib)
       ("libjpeg" ,libjpeg-turbo)
       ("libpng" ,libpng)
       ("libwebp" ,libwebp)
       ("libx11" ,libx11)
       ("libxext" ,libxext)
       ("libxxf86vm" ,libxxf86vm)
       ("pixman" ,pixman)
       ("tinyxml" ,tinyxml)
       ("zlib" ,zlib)))
    (synopsis "Animated sprite editor and pixel art tool")
    (description "Aseprite is a tool for creating 2D pixel art for video
games.  In addition to basic pixel editing features, Aseprite can assist in
the creation of animations, tiled graphics, texture atlases, and more.")
    (home-page "https://www.aseprite.org/")
    (license license:gpl2+)))

(define-public libresprite
  (package
    (name "libresprite")
    (version "1.0")
    ;; TODO: Unbundle third party software.
    ;; - duktape is bundled inside the project but it's hard to unbundle:
    ;;   there are many differences from a version to the next and it is not
    ;;   really designed to work as a shared lib.
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/LibreSprite/LibreSprite")
                    (commit (string-append "v" version))
                    (recursive? #t)))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "0djbjjh21ahlxzh0b0jp4mpfycam8h9157i4wbxkd618fraadhbp"))))
    (build-system cmake-build-system)
    (arguments
     '(#:configure-flags
       (list "-DWITH_WEBP_SUPPORT=1"
             "-DWITH_DESKTOP_INTEGRATION=1")
       ;; Tests are unmaintained
       #:tests? #f))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("curl" ,curl)
       ("freetype" ,freetype)
       ("giflib" ,giflib)
       ("googletest" ,googletest)
       ("libjpeg" ,libjpeg-turbo)
       ("libpng" ,libpng)
       ("libwebp" ,libwebp)
       ("libx11" ,libx11)
       ("libxext" ,libxext)
       ("libxxf86dga" ,libxxf86dga)
       ("libxxf86vm" ,libxxf86vm)
       ("lua" ,lua)                     ; Optional
       ("pixman" ,pixman)
       ("sdl2" ,sdl2)
       ("sdl2-image" ,sdl2-image)
       ("tinyxml" ,tinyxml)
       ("zlib" ,zlib)))
    (synopsis "Animated sprite editor and pixel art tool")
    (description "LibreSprite is a tool for creating 2D pixel art for video
games.  In addition to basic pixel editing features, it can assist in the
creation of animations, tiled graphics, texture atlases, and more.
LibreSprite is a fork of the latest GPLv2 commit of Aseprite.")
    (home-page "https://libresprite.github.io/")
    (license license:gpl2+)))

(define-public qqwing
  (package
    (name "qqwing")
    (version "1.3.4")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://qqwing.com/"
                    name "-" version ".tar.gz"))
              (sha256
               (base32
                "0bw0papyqjg22z6irf36gs54y8236wa37b6gyn2h1spy65n76lqp"))))
    (build-system gnu-build-system)
    (native-inputs
      (list pkg-config))
    (home-page "https://qqwing.com/")
    (synopsis "Sudoku puzzle solver and generator")
    (description
     "QQWing is a Sudoku puzzle generator and solver.
It offers the following features:
@enumerate
@item Can solve 1000 puzzles in 1 second and generate 1000 puzzles in 25 seconds.
@item Uses logic.  Uses as many solve techniques as possible when solving
  puzzles rather than guessing.
@item Rates puzzles.  Most generators don't give an indication of the difficulty
  of a Sudoku puzzle.  QQwing does.
@item Can print solve instructions for any puzzle.
@item Customizable output style, including a CSV style that is easy to
  import into a database.
@end enumerate")
    (license license:gpl2+)))

(define-public quesoglc
  (package
    (name "quesoglc")
    (version "0.7.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/" name "/" version "/"
                                  name "-" version "-free.tar.bz2"))
              (sha256
               (base32
                "08ddhywdy2qg17m592ng3yr0p1ih96irg8wg729g75hsxxq9ipks"))))
    (build-system gnu-build-system)
    (native-inputs (list pkg-config))
    (inputs (list fontconfig freeglut fribidi glew))
    (home-page "https://quesoglc.sourceforge.net")
    (synopsis "Implementation of the OpenGL Character Renderer (GLC)")
    (description
     "The OpenGL Character Renderer (GLC) is a state machine that provides
OpenGL programs with character rendering services via an application programming
interface (API).")
    (license (list license:expat license:lgpl2.1+))))

(define-public python-pygame
  (package
    (name "python-pygame")
    (version "2.1.2")
    (source (origin
              (method url-fetch)
              (uri (pypi-uri "pygame" version))
              (sha256
               (base32
                "0g6j79naab7583kymf1bgxc5l5c9h5laq887rmvh8vw8iyifrl6n"))))
    (build-system python-build-system)
    (arguments
     (list
      #:tests? #f                 ; tests require pygame to be installed first
      #:phases
      #~(modify-phases %standard-phases
          (add-after 'unpack 'fix-build-config
            (lambda _
              (substitute* "buildconfig/config_unix.py"
                (("origincdirs = \\[.*\\]")
                 "origincdirs = os.environ['C_INCLUDE_PATH'].split(\":\")")
                (("ORIGLIBDIRS") "LIBRARY_PATH")
                (("incdirs = \\[\\]") "incdirs = origincdirs")
                (("libdirs = \\[\\]") "libdirs = origlibdirs"))))
          (add-after 'unpack 'fix-sdl2-headers
            (lambda _
              (substitute* "buildconfig/config_unix.py"
                (("SDL_ttf.h") "SDL2/SDL_ttf.h")
                (("SDL_image.h") "SDL2/SDL_image.h")
                (("SDL_mixer.h") "SDL2/SDL_mixer.h"))
              (substitute* "src_c/imageext.c"
                (("SDL_image.h") "SDL2/SDL_image.h"))
              (substitute* "src_c/font.h"
                (("SDL_ttf.h") "SDL2/SDL_ttf.h"))
              (substitute* "src_c/mixer.h"
                (("SDL_mixer.h") "SDL2/SDL_mixer.h"))
              (substitute* "src_c/_sdl2/mixer.c"
                (("SDL_mixer.h") "SDL2/SDL_mixer.h")))))))
    (native-inputs
     (list pkg-config))
    (inputs
     (list freetype
           sdl2
           sdl2-image
           sdl2-mixer
           sdl2-ttf
           sdl2-gfx
           libjpeg-turbo
           libpng
           libx11
           libsmpeg
           portmidi
           v4l-utils))
    (home-page "https://www.pygame.org")
    (synopsis "SDL wrapper for Python")
    (description "Pygame is a set of Python modules designed for writing games.
It adds functionality on top of the SDL library, allowing you to create games
and multimedia programs in the Python language.")
    (license (list license:bsd-2
                   ;; python numeric license as listed by Debian looks like
                   ;; an Expat-style license with a warranty disclaimer for
                   ;; the U.S. government and the University of California.
                   license:expat
                   license:lgpl2.0+
                   license:lgpl2.1+
                   license:gpl3+
                   license:psfl
                   license:public-domain
                   license:lgpl2.1+))))

(define-public python-pygame-sdl2
  (let ((real-version "2.1.0")
        (renpy-version "8.0.3"))
    (package
      (inherit python-pygame)
      (name "python-pygame-sdl2")
      (version (string-append real-version "-for-renpy-" renpy-version))
      (source
       (origin
         (method url-fetch)
         (uri (string-append "https://www.renpy.org/dl/" renpy-version
                             "/pygame_sdl2-" version ".tar.gz"))
         (sha256 (base32 "1nq78mybkvshshdjy5bly6nfq6dnwll648ng62fwmksxpni17486"))
         (modules '((guix build utils)))
         (snippet
          '(begin
             ;; drop generated sources
             (delete-file-recursively "gen")
             (delete-file-recursively "gen3")
             (delete-file-recursively "gen-static")))))
      (build-system python-build-system)
      (arguments
       `(#:tests? #f                ; tests require pygame to be installed first
         #:phases
         (modify-phases %standard-phases
           (add-after 'set-paths 'set-sdl-vars
             (lambda* (#:key inputs #:allow-other-keys)
               (setenv "PYGAME_SDL2_CFLAGS"
                       (string-append "-I"
                                      (assoc-ref inputs "sdl-union")
                                      "/include/SDL2 -D_REENTRANT"))
               (setenv "PYGAME_SDL2_LDFLAGS"
                       (string-append "-L"
                                      (assoc-ref inputs "sdl-union")
                                      "/lib -Wl,-rpath,"
                                      (assoc-ref inputs "sdl-union")
                                      "/lib -Wl,--enable-new-dtags -lSDL2"))
               #t)))))
      (inputs
       (list (sdl-union (list sdl2 sdl2-image sdl2-mixer sdl2-ttf))))
      (native-inputs
       (list python-cython))
      (home-page "https://www.renpy.org/")
      (synopsis "Reimplementation of the Pygame API using SDL2")
      (description "Pygame_SDL2 reimplements the Pygame API using SDL2,
staying close to the original, but also adding some SDL2-specific features.
While it aims to be used as a drop-in replacement, it appears to be
developed mainly for Ren'py.")
      (license (list license:lgpl2.1 license:zlib)))))

(define-public python-renpy
  (package
    (name "python-renpy")
    (version "8.0.3")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://www.renpy.org/dl/" version
                           "/renpy-" version "-source.tar.bz2"))
       (sha256 (base32 "1b49y60pi6304fg06lw5gajzrgg9w80swpfkn6pw0lxbr6djgjgn"))
       (modules '((guix build utils)))
       (patches
        (search-patches
         "renpy-use-system-fribidi.patch"))
       (snippet
        '(with-directory-excursion "module"
           ;; drop fribidi sources
           (delete-file-recursively "fribidi-src")
           ;; drop _renpytfd, as there are missing sources
           (substitute* "setup.py"
             (("cython\\(\"_renpytfd\"" all)
              (string-append "pass # " all)))))))
    (build-system python-build-system)
    (arguments
     `(#:tests? #f                      ; Ren'py doesn't seem to package tests
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'fix-commands
           (lambda* (#:key inputs #:allow-other-keys)
             (substitute* "renpy/editor.py"
               (("xdg-open")
                (string-append (assoc-ref inputs "xdg-utils")
                               "/bin/xdg-open")))))
         (add-after 'unpack 'fix-include-paths
           (lambda* (#:key inputs #:allow-other-keys)
             (substitute* "module/setup.py"
               (("/usr/include/fribidi")
                (search-input-directory inputs "include/fribidi")))))
         (add-after 'set-paths 'set-build-vars
           (lambda* (#:key inputs native-inputs #:allow-other-keys)
             (setenv "RENPY_CYTHON"
                     (search-input-file (or native-inputs inputs)
                                        "/bin/cython"))
             (setenv "RENPY_DEPS_INSTALL" (string-join (map cdr inputs) ":"))))
         (replace 'build
           (lambda* (#:key inputs outputs #:allow-other-keys #:rest args)
             ;; The "module" subdirectory contains a python (really cython)
             ;; project, which is built using a script, that is thankfully
             ;; named "setup.py".
             (with-directory-excursion "module"
               (apply (assoc-ref %standard-phases 'build) args))
             ;; The above only builds the cython modules, but nothing else,
             ;; so we do that here.
             (invoke "python" "-m" "compileall" "renpy")))
         (replace 'install
           (lambda* (#:key inputs outputs #:allow-other-keys #:rest args)
             ;; Again, we have to wrap the module installation.
             ;; Additionally, we want to install the python code
             ;; (both source and compiled) in the same directory.
             (let* ((out (assoc-ref outputs "out"))
                    (site (string-append "/lib/python"
                                         (python-version
                                          (assoc-ref inputs "python"))
                                         "/site-packages")))
               (with-directory-excursion "module"
                 (apply (assoc-ref %standard-phases 'install) args))
               (copy-recursively "renpy"
                                 (string-append out site "/renpy"))
               (delete-file-recursively (string-append out site
                                                       "/renpy/common"))))))))
    (native-inputs (list python-cython))
    (inputs
     (list ffmpeg
           freetype
           fribidi
           glew
           libpng
           (sdl-union (list sdl2 sdl2-image sdl2-mixer sdl2-ttf))
           xdg-utils))
    (propagated-inputs (list python-future python-pygame-sdl2))
    (home-page "https://www.renpy.org/")
    (synopsis "Ren'py python module")
    (description "This package contains the shared libraries and Python modules
of Ren'py.  While functional, they are not meaningful on their own without
the launcher and common Ren'py code provided by the @code{renpy} package and
are only used to bootstrap it.")
    (license license:expat)))

(define-public renpy
  (package
    (inherit python-renpy)
    (name "renpy")
    (build-system python-build-system)
    (arguments
     (list
      #:tests? #f ; see python-renpy
      #:modules '((srfi srfi-1)
                  (guix build python-build-system)
                  (guix build utils))
      #:imported-modules `((srfi srfi-1) ,@%python-build-system-modules)
      #:phases
      #~(modify-phases %standard-phases
          (add-after 'unpack 'fix-commands
            (lambda* (#:key inputs outputs #:allow-other-keys)
              (substitute* "launcher/game/choose_directory.rpy"
                (("/usr/bin/python")
                 (search-input-file inputs "/bin/python3")))
              (substitute* "launcher/game/front_page.rpy"
                (("xdg-open")
                 (search-input-file inputs "/bin/xdg-open")))
              (substitute* "launcher/game/project.rpy"
                (("cmd = \\[ executable, \"-EO\", sys.argv\\[0\\] \\]")
                 (string-append "cmd = [ \"" (assoc-ref outputs "out")
                                "/bin/renpy\" ]"))
                ;; Projects are still created in the usual style, so we need
                ;; to adjust the path.
                (("cmd.append\\(self.path\\)")
                 "cmd.append(self.path + \"/game\")"))))
          (add-after 'unpack 'drop-game-from-paths
            (lambda _
              (substitute* (list "launcher/game/gui7.rpy"
                                 "launcher/game/gui7/images.py")
                ((", \"game\",") ","))
              #t))
          (add-before 'build 'start-xserver
            (lambda* (#:key inputs native-inputs #:allow-other-keys)
              (let ((Xvfb (search-input-file (or native-inputs inputs)
                                             "/bin/Xvfb")))
                (setenv "HOME" (getcwd))
                (system (format #f "~a :1 &" Xvfb))
                (setenv "DISPLAY" ":1"))))
          (replace 'build
            (lambda _
              (invoke "python" "renpy.py" "launcher" "quit")
              (invoke "python" "renpy.py" "the_question" "quit")
              (invoke "python" "renpy.py" "tutorial" "quit")))
          (replace 'install
            (lambda* (#:key inputs outputs #:allow-other-keys)
              ;; Here we install our custom renpy program.
              ;; After finishing this step, "out" will have the following:
              ;; |-- bin/renpy
              ;; `-- share/renpy ; i.e. path_to_renpy_base()
              ;;     |-- common
              ;;     `-- gui
              ;;
              ;; Note that common shares the source files that would be installed
              ;; by python2-renpy (which are instead deleted from that package),
              ;; but also contains their byte-compiled versions.
              ;; On other systems, renpy_base would point to site-packages or
              ;; even somewhere in /opt.
              ;; The former approach is not as straightforward as it seems
              ;; -- it causes renpy to load files twice for some weird reason --
              ;; and the latter is impossible on Guix. Hence the detour through
              ;; share/renpy and the custom renpy program.
              ;;
              ;; As a convention, other games should be installed as
              ;; subdirectories of share/renpy in their respective outputs as
              ;; well. This differs from the traditional layout, which is
              ;; roughly the following:
              ;; `-- Super Awesome Game
              ;;     |-- game       ; <- the folder we actually want
              ;;     |-- lib        ; compiled renpy module and dependencies
              ;;     |-- renpy      ; yet another copy of Ren'py's code
              ;;     |   |-- common ; the common folder from above
              ;;     |   `-- ...    ; Python code (source + compiled)
              ;;     |-- Super Awesome Game.py
              ;;     `-- Super Awesome Game.sh
              (let* ((out (assoc-ref outputs "out"))
                     (bin/renpy (string-append out "/bin/renpy")))
                (copy-recursively "renpy/common"
                                  (string-append out "/share/renpy/common"))
                (copy-recursively "gui"
                                  (string-append out "/share/renpy/gui"))
                (copy-recursively "sdk-fonts"
                                  (string-append out "/share/renpy/sdk-fonts"))

                (mkdir-p (string-append out "/bin"))
                (copy-file #$(local-file (search-auxiliary-file "renpy/renpy.in"))
                           bin/renpy)
                (substitute* bin/renpy
                  (("@PYTHON@") (search-input-file inputs "bin/python3"))
                  (("@RENPY_BASE@") (string-append out "/share/renpy")))
                (chmod bin/renpy #o755))))

          (add-after 'install 'install-games
            (lambda* (#:key inputs outputs #:allow-other-keys)
              (define renpy (assoc-ref outputs "out"))
              ;; TODO: We should offer a renpy-build-system to make the
              ;; installation of Ren'py games easier.
              (define* (install-renpy-game #:key output game name (renpy renpy)
                                           #:allow-other-keys)
                (let* ((name (or name (basename game)))
                       (launcher (string-append output "/bin/renpy-" name))
                       (share (string-append output "/share/renpy/" name)))
                  (copy-recursively (string-append game "/game") share)
                  (mkdir-p (string-append output "/bin"))
                  (with-output-to-file launcher
                    (lambda ()
                      (format #t
                              "#!~a~%~a ~a \"$@\""
                              (search-input-file inputs "/bin/bash")
                              (string-append renpy "/bin/renpy")
                              share)))
                  (chmod launcher #o755)))

              (install-renpy-game #:output (assoc-ref outputs "out")
                                  #:game "launcher")

              (install-renpy-game #:output (assoc-ref outputs "the-question")
                                  #:game "the_question"
                                  #:name "the-question")

              (install-renpy-game #:output (assoc-ref outputs "tutorial")
                                  #:game "tutorial")))
          (replace 'wrap
            (lambda* (#:key inputs outputs #:allow-other-keys)
              (let ((out (assoc-ref outputs "out"))
                    (site (string-append "/lib/python"
                                         (python-version
                                          (assoc-ref inputs "python"))
                                         "/site-packages")))
                (wrap-program (string-append out "/bin/renpy")
                  `("GUIX_PYTHONPATH" =
                    (,@(delete-duplicates
                        (map
                         (lambda (store-path)
                           (string-append store-path site))
                         (cons (assoc-ref outputs "out")
                               (map cdr
                                    (filter
                                     (lambda (input)
                                       (string-prefix? "python" (car input)))
                                     inputs))))))))))))))
    (inputs (list bash-minimal
                  python
                  python-pefile
                  python-requests
                  python-renpy
                  python-six
                  `(,python "tk")
                  xdg-utils))
    (propagated-inputs '())
    (native-inputs (list xorg-server-for-tests))
    (outputs (list "out" "tutorial" "the-question"))
    (home-page "https://www.renpy.org/")
    (synopsis "Visual Novel Engine")
    (description "Ren'Py is a visual novel engine that helps you use words,
images, and sounds to tell interactive stories that run on computers and
mobile devices.  These can be both visual novels and life simulation games.
The easy to learn script language allows anyone to efficiently write large
visual novels, while its Python scripting is enough for complex simulation
games.")
    (license license:expat)))

(define-public python-pyxel
  (package
    (name "python-pyxel")
    (version "1.4.3")
    (source
     (origin
       (method git-fetch)
       (uri
        (git-reference
         (url "https://github.com/kitao/pyxel")
         (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32
         "0bwsgb5yq5s479cnf046v379zsn5ybp5195kbfvzr9l11qbaicm9"))
       (modules '((guix build utils)))
       (snippet
        '(begin
           (delete-file-recursively "pyxel/core/bin")))))
    (build-system python-build-system)
    (arguments
     `(#:tests? #f ; "Tests" are actually example programs that never halt.
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-build-files
           (lambda* (#:key inputs #:allow-other-keys)
             (substitute* "setup.py"
               (("\"pyxel\\.core\\.bin\\.(.*)\"," all arch)
                (if (string=? arch "linux")
                    all
                    "")))
             (substitute* "pyxel/core/Makefile"
               (("`sdl2-config")
                (string-append "`sdl2-config --prefix="
                               (assoc-ref inputs "sdl2"))))))
         (add-before 'build 'prebuild
           (lambda _
             (invoke "make" "-C" "pyxel/core"))))))
    (inputs
     `(("gifsicle" ,gifsicle)
       ("sdl2" ,(sdl-union (list sdl2 sdl2-image)))))
    (home-page "https://github.com/kitao/pyxel")
    (synopsis "Retro game engine for Python")
    (description "Pyxel is a game engine inspired by retro gaming consoles.
It has a fixed 16-color palette, can hold up to 3 image banks and 8 tilemaps
(256x256 pixels each) and 4 sound channels with 64 definable sounds.  It
also comes with a built-in image and sound editor.")
    (license license:expat)))

(define-public grafx2
  (package
    (name "grafx2")
    (version "2.4")
    (source (origin
              (method url-fetch)
              ;; XXX: There is no URL that contains the version. :(
              (uri "http://pulkomandy.tk/projects/GrafX2/downloads/21")
              (file-name (string-append "grafx2-" version ".tgz"))
              (sha256
               (base32
                "0svsy6rqmdj11b400c242i2ixihyz0hds0dgicqz6g6dcgmcl62q"))))
    (build-system gnu-build-system)
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         (delete 'configure) ; no configure script
         (add-before 'build 'change-to-src-directory
           (lambda _
             (chdir "src")
             #t)))
       #:make-flags
       ;; SDL header files are referenced without the preceeding "SDL/".
       (list (string-append "CFLAGS=-I"
                            (assoc-ref %build-inputs "sdl-union")
                            "/include/SDL"
                            " -fcommon")
             (string-append "prefix="
                            (assoc-ref %outputs "out")))
       #:tests? #f)) ; no check target
    (native-inputs
     (list pkg-config))
    (inputs
     (list libpng lua-5.1
           (sdl-union (list sdl sdl-image sdl-ttf))))
    (synopsis "Bitmap paint program")
    (description "GrafX2 is a bitmap paint program inspired by the Amiga
programs Deluxe Paint and Brilliance.  Specializing in 256-color drawing, it
includes a very large number of tools and effects that make it particularly
suitable for pixel art, game graphics, and generally any detailed graphics
painted with a mouse.")
    (home-page "http://pulkomandy.tk/projects/GrafX2")
    (license license:gpl2))) ; GPLv2 only

(define-public ois
  (package
    (name "ois")
    (version "1.5.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/wgois/OIS")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0nkh0zrsbyv47c0i0vhdna3jsnvs69pb1svg75avxw6z7kwskgla"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f))                    ; no test suite
    (inputs
     (list libx11))
    (synopsis "Object Oriented Input System")
    (description
     "Cross Platform Object Oriented Input Lib System is a cross platform,
simple solution for using all kinds of Input Devices (Keyboards, Mice,
Joysticks, etc) and feedback devices (e.g. force feedback).  Meant to be very
robust and compatible with many systems and operating systems.")
    (home-page "https://github.com/wgois/OIS")
    (license license:zlib)))

(define-public mygui
  (package
    (name "mygui")
    (version "3.4.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/MyGUI/mygui")
             (commit (string-append "MyGUI" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32
         "1gyd4bzm6qqpqw6is065qs5c729gl6rp989bnkygha6q4s371vz6"))))
    (build-system cmake-build-system)
    (arguments
     '(#:tests? #f                      ; No test target
       #:configure-flags
       (list "-DMYGUI_INSTALL_DOCS=TRUE"
             (string-append "-DOGRE_INCLUDE_DIR="
                            (assoc-ref %build-inputs "ogre")
                            "/include/OGRE")
             ;; Demos and tools are Windows-specific:
             ;; https://github.com/MyGUI/mygui/issues/24.
             "-DMYGUI_BUILD_DEMOS=FALSE"
             "-DMYGUI_BUILD_TOOLS=FALSE")))
    (native-inputs
     (list boost doxygen pkg-config))
    (inputs
     (list font-dejavu
           freetype
           graphviz
           libx11
           ogre
           ois))
    (synopsis "Fast, flexible and simple GUI")
    (description
     "MyGUI is a library for creating Graphical User Interfaces (GUIs) for games
and 3D applications.  The main goals of mygui are: speed, flexibility and ease
of use.")
    (home-page "http://mygui.info/")
    (license license:expat)))

(define-public mygui-gl
  ;; Closure size is reduced by some 800 MiB.
  (package/inherit mygui
    (name "mygui-gl")
    (arguments
     (substitute-keyword-arguments (package-arguments mygui)
       ((#:configure-flags _)
        `(cons* "-DMYGUI_RENDERSYSTEM=4" ; 3 is Ogre, 4 is OpenGL.
                ;; We can't reuse the flags because of the mention to Ogre.
                (list "-DMYGUI_INSTALL_DOCS=TRUE"
                      ;; Demos and tools are Windows-specific:
                      ;; https://github.com/MyGUI/mygui/issues/24.
                      "-DMYGUI_BUILD_DEMOS=FALSE"
                      "-DMYGUI_BUILD_TOOLS=FALSE")))))
    (inputs
     (modify-inputs (package-inputs mygui)
       (delete "ogre")
       (prepend mesa glu)))
    (synopsis "Fast, flexible and simple GUI (OpenGL backend)")))

(define-public openmw
  (package
    (name "openmw")
    (version "0.47.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
              (url "https://github.com/OpenMW/openmw")
              (commit (string-append "openmw-" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32
         "19mcbnjl4279qalb97msf965bjax48mx1r1qczyvwhn28h6n3bsy"))
       (patches (search-patches "openmw-assume-nonconst-SIGSTKSZ.patch"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f                      ; No test target
       #:configure-flags
       (list "-DDESIRED_QT_VERSION=5"
             "-DOPENMW_USE_SYSTEM_RECASTNAVIGATION=ON")))
    (native-inputs
     (list boost doxygen pkg-config))
    (inputs
     (list bullet
           ffmpeg-4                     ; https://gitlab.com/OpenMW/openmw/-/issues/6631
           libxt
           lz4
           mygui-gl              ; OpenMW does not need Ogre.
           openal
           openmw-openscenegraph
           qtbase-5
           recastnavigation
           sdl2
           unshield))
    (synopsis "Re-implementation of the RPG Morrowind engine")
    (description
     "OpenMW is a game engine which reimplements and extends the one that runs
the 2002 open-world RPG Morrowind.  The engine comes with its own editor,
called OpenMW-CS which allows the user to edit or create their own original
games.")
    (home-page "https://openmw.org")
    (license license:gpl3)))

(define-public godot
  (package
    (name "godot")
    (version "3.4.2")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/godotengine/godot")
                    (commit (string-append version "-stable"))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1bm9yl995chvx6jwkdia12yjrgwcpzb1r9bmj606q8z264aw2ma5"))
              (modules '((guix build utils)
                         (ice-9 ftw)
                         (srfi srfi-1)))
              (snippet
               '(begin
                  ;; Keep only those bundled files we have not (yet) replaced
                  ;; with Guix versions. Note that some of these may be
                  ;; modified; see "thirdparty/README.md".
                  (with-directory-excursion "thirdparty"
                    (let* ((preserved-files
                            '("README.md"
                              "assimp"
                              "certs"
                              "cvtt"
                              "embree"
                              "enet"
                              "etc2comp"
                              "fonts"
                              "glad"
                              "jpeg-compressor"
                              "libsimplewebm"
                              "minimp3"
                              "miniupnpc"
                              "minizip"
                              "misc"
                              "nanosvg"
                              "oidn"
                              "pvrtccompressor"
                              "recastnavigation"
                              "squish"
                              "stb_rect_pack"
                              "tinyexr"
                              "vhacd"
                              "xatlas")))
                      (for-each delete-file-recursively
                                (lset-difference string=?
                                                 (scandir ".")
                                                 (cons* "." ".." preserved-files)))))))))
    (build-system scons-build-system)
    (arguments
     `(#:scons ,scons-python2
       #:scons-flags (list "platform=x11" "target=release_debug"
                           ;; Avoid using many of the bundled libs.
                           ;; Note: These options can be found in the SConstruct file.
                           "builtin_bullet=no"
                           "builtin_freetype=no"
                           "builtin_glew=no"
                           "builtin_libmpdec=no"
                           "builtin_libogg=no"
                           "builtin_libpng=no"
                           "builtin_libtheora=no"
                           "builtin_libvorbis=no"
                           "builtin_libvpx=no"
                           "builtin_libwebp=no"
                           "builtin_mbedtls=no"
                           "builtin_opus=no"
                           "builtin_pcre2=no"
                           "builtin_wslay=no"
                           "builtin_zlib=no"
                           "builtin_zstd=no")
       #:tests? #f                      ; There are no tests
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'scons-use-env
           (lambda _
             ;; Scons does not use the environment variables by default,
             ;; but this substitution makes it do so.
             (substitute* "SConstruct"
               (("env_base = Environment\\(tools=custom_tools\\)")
                (string-append
                 "env_base = Environment(tools=custom_tools)\n"
                 "env_base = Environment(ENV=os.environ)")))))
         ;; Build headless tools, used for packaging games without depending on X.
         (add-after 'build 'build-headless
           (lambda* (#:key scons-flags #:allow-other-keys)
             (apply invoke "scons"
                    `(,(string-append "-j" (number->string (parallel-job-count)))
                      "platform=server" ,@(delete "platform=x11" scons-flags)))))
         (replace 'install
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (headless (assoc-ref outputs "headless"))
                    (zenity (assoc-ref inputs "zenity")))
               ;; Strip build info from filenames.
               (with-directory-excursion "bin"
                 (for-each
                  (lambda (file)
                    (let ((dest (car (string-split (basename file) #\.))))
                      (rename-file file dest)))
                  (find-files "." "godot.*\\.x11\\.opt\\.tools.*"))
                 (install-file "godot" (string-append out "/bin"))
                 (install-file "godot_server" (string-append headless "/bin")))
               ;; Tell the editor where to find zenity for OS.alert().
               (wrap-program (string-append out "/bin/godot")
                 `("PATH" ":" prefix (,(string-append zenity "/bin")))))))
         (add-after 'install 'wrap
           (lambda* (#:key inputs outputs #:allow-other-keys)
             ;; FIXME: Mesa tries to dlopen libudev.so.0 and fails.  Pending a
             ;; fix of the mesa package we wrap the pcb executable such that
             ;; Mesa can find libudev.so.0 through LD_LIBRARY_PATH.
             ;; also append ld path for pulseaudio and alsa-lib
             (let* ((out (assoc-ref outputs "out"))
                    (udev_path (string-append (assoc-ref inputs "eudev") "/lib"))
                    (pulseaudio_path (string-append (assoc-ref inputs "pulseaudio") "/lib"))
                    (alas_lib_path (string-append (assoc-ref inputs "alsa-lib") "/lib")))
               (wrap-program (string-append out "/bin/godot")
                 `("LD_LIBRARY_PATH" ":" prefix (,udev_path ,pulseaudio_path ,alas_lib_path))))))
         (add-after 'install 'install-godot-desktop
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (applications (string-append out "/share/applications"))
                    (icons (string-append out "/share/icons/hicolor")))
               (mkdir-p applications)
               (copy-file "misc/dist/linux/org.godotengine.Godot.desktop"
                          (string-append applications "/godot.desktop"))
               (for-each (lambda (icon dest)
                           (mkdir-p (dirname dest))
                           (copy-file icon dest))
                         '("icon.png" "icon.svg")
                         `(,(string-append icons "/256x256/apps/godot.png")
                           ,(string-append icons "/scalable/apps/godot.svg")))))))))
    (outputs '("out" "headless"))
    (native-inputs
     (list pkg-config))
    (inputs
     (list alsa-lib
           bullet
           freetype
           glew
           glu
           libtheora
           libvorbis
           libvpx
           libwebp
           libx11
           libxcursor
           libxi
           libxinerama
           libxrandr
           mbedtls-apache-lts
           mesa
           opusfile
           pcre2
           pulseaudio
           eudev                        ; FIXME: required by mesa
           wslay
           zenity
           `(,zstd "lib")))
    (home-page "https://godotengine.org/")
    (synopsis "Advanced 2D and 3D game engine")
    (description
     "Godot is an advanced multi-platform game engine written in C++.  If
features design tools such as a visual editor, can import 3D models and
provide high-quality 3D rendering, it contains an animation editor, and can be
scripted in a Python-like language.")
    (license license:expat)))

(define-public entt
  (package
    (name "entt")
    (version "3.7.1")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/skypjack/entt")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "151jg3m262xwaywl2rqnc90yr6p48rhmgi5mxyv6bwqvmfli2m5p"))))
    (build-system cmake-build-system)
    (arguments
     `(#:configure-flags (list "-DENTT_BUILD_TESTING=ON"
                               "-DENTT_FIND_GTEST_PACKAGE=ON"
                               "-DENTT_BUILD_DOCS=ON")
       ;; Only tests are compiled, and they need assertions to work correctly.
       #:build-type "Debug"))
    (native-inputs
     (list ;; for testing
           googletest
           ;; for documentation
           doxygen graphviz))
    (synopsis "Entity component system")
    (description "EnTT is a header-only library, containing (among other things)
@itemize
@item an entity component system based on sparse sets,
@item a configuration system using the monostate pattern,
@item a static reflection system,
@item and a cooperative scheduler.
@end itemize")
    (home-page "https://github.com/skypjack/entt")
    (license (list license:expat        ; code
                   license:cc-by4.0)))) ; documentation

(define-public eureka
  (package
    (name "eureka")
    (version "1.24")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/eureka-editor/Eureka/"
                                  version "/eureka-"
                                  ;; version without dots e.g 1.21 => 121
                                  (string-join (string-split version #\.) "")
                                  "-source.tar.gz"))
              (sha256
               (base32
                "1x4idjniz9sma3j9ss6ni7fafmz22zs2jnpsqw4my9rsnmra5d9v"))))
    (build-system gnu-build-system)
    (arguments
     '(#:tests? #f
       #:make-flags
       (let ((out (assoc-ref %outputs "out")))
         (list (string-append "PREFIX=" out)))
       #:phases
       (modify-phases %standard-phases
         (delete 'configure)
         (add-before 'build 'prepare-install-directories
           (lambda* (#:key outputs #:allow-other-keys)
             (let ((out (assoc-ref outputs "out")))
               (mkdir-p (string-append out "/bin"))
               (mkdir-p (string-append out "/share"))

               (with-fluids ((%default-port-encoding #f))
                 (substitute* "./src/main.cc"
                   (("/usr/local") out)))

               (substitute* "Makefile"
                 (("-o root") ""))))))))
    (inputs `(("mesa" ,mesa)
              ("libxft" ,libxft)
              ("libxinerama" ,libxinerama)
              ("libfontconfig" ,fontconfig)
              ("libjpeg" ,libjpeg-turbo)
              ("libpng" ,libpng)
              ("fltk" ,fltk)
              ("zlib" ,zlib)))
    (native-inputs (list pkg-config xdg-utils))
    (synopsis "Doom map editor")
    (description "Eureka is a map editor for the classic DOOM games, and a few
related games such as Heretic and Hexen.  It comes with a 3d preview mode and
a 2D editor view.")
    (home-page "https://eureka-editor.sourceforge.net/")
    (license license:gpl2+)))

(define-public guile-chickadee
  (package
    (name "guile-chickadee")
    (version "0.10.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://files.dthompson.us/chickadee/"
                                  "chickadee-" version ".tar.gz"))
              (sha256
               (base32
                "0x8g0bsvir2z3876ynslfgnmfr5p92ic4666v73526lswnv56bqk"))))
    (build-system gnu-build-system)
    (arguments
     '(#:make-flags '("GUILE_AUTO_COMPILE=0")))
    (propagated-inputs
     `(("guile-opengl" ,guile3.0-opengl)
       ("guile-sdl2" ,guile-sdl2)))
    (inputs
     (list freetype
           guile-3.0-latest
           libjpeg-turbo
           libpng
           libvorbis
           mpg123
           openal
           readline))
    (native-inputs
     (list guile-3.0-latest pkg-config texinfo))
    (home-page "https://dthompson.us/projects/chickadee.html")
    (synopsis "Game development toolkit for Guile Scheme with SDL2 and OpenGL")
    (description "Chickadee is a game development toolkit for Guile Scheme
built on top of SDL2 and OpenGL.  Chickadee aims to provide all the features
that parenthetically inclined game developers need to make 2D (and eventually
3D) games in Scheme, such as:

@enumerate
@item extensible, fixed-timestep game loop
@item OpenGL-based rendering engine
@item keyboard, mouse, controller input
@item REPL-driven development model
@end enumerate\n")
    (license license:gpl3+)))

(define-public bennu-game-development
  (package
    (name "bennu-game-development")
    (version "353")
    (source (origin
              (method svn-fetch)
              (uri (svn-reference
                    (url "http://svn.code.sf.net/p/bennugd/code")
                    (revision (string->number version))))
              (file-name (string-append name "-" version))
              (sha256
               (base32
                "1iri58ryk9lbqn585cbccnvrfkj8qxlbcsk8rpih40jhvs1j101l"))
              (modules '((guix build utils)))
              (snippet
               '(begin
                  (delete-file-recursively "3rdparty") #t))))
    (build-system gnu-build-system)
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-configure-to-use-openssl
           (lambda* (#:key outputs #:allow-other-keys)
             (chdir "core")
             (delete-file "configure")
             (substitute* "configure.in"
               (("i\\*86\\)")
                "*)
                COMMON_CFLAGS=\"$COMMON_CFLAGS -DUSE_OPENSSL\"
                COMMON_LDFLAGS=\"$COMMON_LDFLAGS\"
                LIBSSL=\"crypto\"
                USE_OPENSSL=yes
                ;;

            i*86)"))
               #t)))))
    (inputs (list openssl zlib))
    (native-inputs (list pkg-config autoconf automake libtool))
    (synopsis "Programming language to create games")
    (description "Bennu Game Development, also known as bennudg, is a
programming language tailored at game development.  It is the successor of
Fenix.")
    (home-page "https://sourceforge.net/projects/bennugd/")
    (license license:zlib)))

(define-public bennu-game-development-modules
  (package
    (inherit bennu-game-development)
    (name "bennu-game-development-modules")
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-conflicting-definitions
           (lambda _
             (with-fluids ((%default-port-encoding #f))
               (substitute* "core/include/fmath.h"
                 (("extern fixed fmul\\( int x, int y \\);") "")
                 (("extern fixed fdiv\\( int x, int y \\);") "")))
             (chdir "modules"))))))
    (inputs (list zlib libpng openssl sdl-mixer bennu-game-development))
    (synopsis "Modules for the Bennu Game Development programming language")
    (description "This package contains a collection of modules for the Bennu
Game Development programming language, from CD handling through SDL to
joystick support.")))

(define-public plib
  (package
    (name "plib")
    (version "1.8.5")
    (source (origin
              (method url-fetch)
              (uri (string-append "http://plib.sourceforge.net/dist/"
                                  "plib-" version ".tar.gz"))
              (sha256
               (base32
                "0cha71mflpa10vh2l7ipyqk67dq2y0k5xbafwdks03fwdyzj4ns8"))
              (patches (search-patches "plib-CVE-2011-4620.patch"
                                       "plib-CVE-2012-4552.patch"))))
    (build-system gnu-build-system)
    (inputs
     (list mesa libxi libxmu))
    (native-inputs
     (list pkg-config))
    (home-page "https://plib.sourceforge.net/")
    (synopsis "Suite of portable game libraries")
    (description "PLIB is a set of libraries that will permit programmers to
write games and other realtime interactive applications that are 100% portable
across a wide range of hardware and operating systems.  PLIB includes sound
effects, music, a complete 3D engine, font rendering, a simple Windowing
library, a game scripting language, a GUI, networking, 3D math library and a
collection of handy utility functions.  All are 100% portable across nearly
all modern computing platforms.  Each library component is fairly independent
of the others")
    (license license:lgpl2.0+)))

(define-public ioquake3
  ;; We follow master since it seems that there won't be releases after 1.3.6.
  (let ((revision "2")
        (commit "29b0cc3a4d037046eb3247fc04f4b703f6a33452"))
    (package
      (name "ioquake3")
      (version (git-version "1.3.6" revision commit))
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/ioquake/ioq3")
               (commit commit)))
         (file-name (git-file-name name version))
         (sha256
          (base32 "0fqq2qpnrgpgf3gs71wvxlkcihxcrvhvllh88ii4ip134c1qbs9q"))))
      (build-system gnu-build-system)
      (inputs
       (list curl
             freetype
             libjpeg-turbo
             libogg
             libvorbis
             openal
             opus
             opusfile
             sdl2))
      (native-inputs
       (list which                      ; else SDL_version.h won't be found.
             pkg-config))
      (arguments
       (list
        #:tests? #f                     ; no tests
        #:make-flags
        #~(list (string-append "CC=" #$(cc-for-target))
                "USE_INTERNAL_LIBS=0"
                "USE_FREETYPE=1"
                "USE_RENDERER_DLOPEN=0"
                "USE_OPENAL_DLOPEN=0"
                "USE_CURL_DLOPEN=0")
        #:phases
        #~(modify-phases %standard-phases
            (delete 'configure)         ; no configure-script
            (replace 'install
              (lambda* (#:key make-flags outputs #:allow-other-keys)
                (apply invoke "make" "copyfiles"
                       (string-append "COPYDIR="
                                      (assoc-ref outputs "out")
                                      "/bin")
                       make-flags))))))
      (home-page "https://ioquake3.org/")
      (synopsis "FPS game engine based on Quake 3")
      (description "ioquake3 is a free software first person shooter engine
based on the Quake 3: Arena and Quake 3: Team Arena source code.  Compared to
the original, ioquake3 has been cleaned up, bugs have been fixed and features
added.  The permanent goal is to create a Quake 3 distribution upon which
people base their games, ports to new platforms, and other projects.")
      (license license:gpl2))))

(define-public instead
  (package
    (name "instead")
    (version "3.3.5")
    (build-system cmake-build-system)
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/instead-hub/instead")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "02j8cw623j51qmr4991i5hsbrzmnp0qfzds8m6nwwr15sjv3hv1g"))
       (patches
        (search-patches
         "instead-use-games-path.patch"))
       (modules '((guix build utils)))
       (snippet
        '(begin
           (delete-file-recursively "src/zlib")))))
    (arguments
     '(#:configure-flags
       (list (string-append
              "-DLUA_INCLUDE_DIR="
              (assoc-ref %build-inputs "luajit") "/include/luajit-2.1/")
             "-DWITH_LUAJIT=1"
             "-DWITH_GTK3=1")
       #:tests? #f))
    (inputs
     `(("gtk+",gtk+)
       ("lua" ,lua)
       ("luajit" ,luajit)
       ("pkg-config" ,pkg-config)
       ("sdl2-images" ,sdl2-image)
       ("sdl2-ttf" ,sdl2-ttf)
       ("sdl2-mixer" ,sdl2-mixer)
       ("zlib" ,zlib)))
    (home-page "https://instead3.syscall.ru/")
    (synopsis "Text adventure interpreter")
    (description "The STEAD (Simple TExt ADventures) interpreter provides
functionality to play games that mix elements of visual novels, interactive
fiction and classic point-and-click adventures.")
    (native-search-paths
     (list (search-path-specification
            (variable "INSTEAD_GAMES_PATH")
            (separator #f)                        ;single entry
            (files '("share/instead/games")))))
    (license license:expat)))

(define-public openvr
  (package
    (name "openvr")
    (version "1.8.19")
    (home-page "https://github.com/ValveSoftware/openvr/")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url home-page)
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1b8cppvw6ib0kvx0vjq7jsk3plg1vh171w8xr230vjn05381wp52"))))
    (build-system cmake-build-system)
    (arguments
     ;; No tests.
     '(#:tests? #f
       #:configure-flags (list "-DBUILD_SHARED=1")))
    (synopsis "Virtual reality software development kit")
    (description "OpenVR is an API and runtime that allows access to VR
hardware from multiple vendors without requiring that applications have
specific knowledge of the hardware they are targeting.")
    (license license:bsd-3)))

(define-public flatzebra
  (package
    (name "flatzebra")
    (version "0.1.7")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "http://perso.b2b2c.ca/~sarrazip/dev/"
                           "flatzebra-" version ".tar.gz"))
       (sha256
        (base32 "1x2dy41c8vrq62bn03b82fpmk7x4rzd7qqiwvq0mgcl5rmasc2c8"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'fix-sdl-config
           (lambda* (#:key inputs #:allow-other-keys)
             ;; XXX: sdl-config in sdl-union is a link to sdl-config from
             ;; plain sdl package.  As a consequence, the prefix is wrong.
             ;; Force correct one with "--prefix" argument.
             (let ((sdl-union (assoc-ref inputs "sdl")))
               (setenv "SDL_CONFIG"
                       (string-append sdl-union
                                      "/bin/sdl-config --prefix="
                                      sdl-union)))
             #t)))))
    (native-inputs
     (list pkg-config))
    (inputs
     `(("sdl" ,(sdl-union (list sdl sdl-image sdl-mixer)))))
    (home-page "http://perso.b2b2c.ca/~sarrazip/dev/burgerspace.html")
    (synopsis "Generic game engine for 2D double-buffering animation")
    (description
     "Flatzebra is a simple, generic C++ game engine library supporting 2D
double-buffering.")
    (license license:gpl2+)))

(define-public libccd
  (package
    (name "libccd")
    (version "2.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/danfis/libccd")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0sfmn5pd7k5kyhbxnd689xmsa5v843r7sska96dlysqpljd691jc"))))
    (build-system cmake-build-system)
    (arguments
     `(#:configure-flags '("-DBUILD_DOCUMENTATION=ON"
                           "-DBUILD_TESTING=ON"
                           "-DENABLE_DOUBLE_PRECISION=ON")))
    (native-inputs
     (list python-sphinx))
    (home-page "https://github.com/danfis/libccd")
    (synopsis "Library for collision detection between two convex shapes")
    (description "@code{libccd} is library for a collision detection
between two convex shapes.  @code{libccd} implements variation on
Gilbert–Johnson–Keerthi algorithm plus Expand Polytope Algorithm (EPA)
and also implements algorithm Minkowski Portal Refinement (MPR,
a.k.a. XenoCollide) as described in Game Programming Gems 7.")
    (license license:expat)))

(define-public ode
  (package
    (name "ode")
    (version "0.16.3")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://bitbucket.org/odedevs/ode/downloads/"
                           "ode-" version ".tar.gz"))
       (sha256
        (base32 "04y40czkh71m1p2r8ddfn5bajvlh7yyfa928jvi8qipwkgsdnhf7"))
       (modules '((guix build utils)))
       (snippet
        '(begin
           (delete-file-recursively "libccd")))))
    (build-system cmake-build-system)
    (arguments
     (list
      ;; XXX: The sole test is failing on i686 due to a rounding error.
      #:tests? (not (target-x86-32?))
      #:configure-flags #~(list "-DODE_WITH_LIBCCD_SYSTEM=ON")
      #:phases
      #~(modify-phases %standard-phases
          (add-after 'unpack 'unbundle-libccd
            (lambda _
              (substitute* "CMakeLists.txt"
                (("configure_file\\(libccd/.*") "")))))))
    (inputs
     (list glu libccd mesa))
    (home-page "https://www.ode.org/")
    (synopsis "High performance library for simulating rigid body dynamics")
    (description "ODE is a high performance library for simulating
rigid body dynamics.  It is fully featured, stable, mature and
platform independent with an easy to use C/C++ API.  It has advanced
joint types and integrated collision detection with friction.  ODE is
useful for simulating vehicles, objects in virtual reality
environments and virtual creatures.  It is currently used in many
computer games, 3D authoring tools and simulation tools.")
    ;; Software is dual-licensed.
    (license (list license:lgpl2.1+ license:expat))))

(define-public chipmunk
  (package
    (name "chipmunk")
    (version "7.0.3")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/slembcke/Chipmunk2D")
             (commit (string-append "Chipmunk-" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1qmkn01g06p3rnhmbyffmjns6wj5vhgf9cscigk3wzxcpwv1hyxb"))
       (modules '((guix build utils)))
       (snippet
        #~(begin
            ;; This is fixed in the upstream repository but the fix
            ;; has not been released.
            (substitute* "src/cpHastySpace.c"
              (("#include <sys/sysctl.h>") ""))))))
    (build-system cmake-build-system)
    (arguments
     (list #:tests? #f                      ;no test
           #:configure-flags
           #~(list "-DBUILD_STATIC=OFF"
                   "-DBUILD_DEMOS=OFF")))
    (inputs
     (list freeglut libxmu libxrandr))
    (home-page "https://chipmunk-physics.net/")
    (synopsis "Fast and lightweight 2D game physics library")
    (description "Chipmunk is a simple, lightweight, fast and portable 2D
rigid body physics library written in C.")
    (license license:expat)))

(define-public box2d
  (package
    (name "box2d")
    (version "2.4.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/erincatto/box2d")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1ja9cahf3z9zzrdaqcw44lpjmqf2ir2g4chwz0iwqwlkckwhpgvh"))
       (modules '((guix build utils)))
       (snippet
        '(begin
           ;; Remove bundled code only used for the testbed.
           (delete-file-recursively "extern")
           ;; Remove bundled copy of doctest, and adjust tests accordingly.
           (delete-file "unit-test/doctest.h")
           (substitute* "unit-test/CMakeLists.txt"
             (("doctest\\.h")
              ""))
           (substitute* (find-files "unit-test" "\\.cpp$")
             (("include \"doctest\\.h\"")
              "include <doctest/doctest.h>"))))))
    (build-system cmake-build-system)
    (arguments
     `(#:test-target "unit_test"
       #:configure-flags '("-DBUILD_SHARED_LIBS=ON"
                           "-DBOX2D_BUILD_TESTBED=OFF")))
    (native-inputs
     (list doctest))                    ;for tests
    (inputs
     (list libx11))
    (home-page "https://box2d.org/")
    (synopsis "2D physics engine for games")
    (description "Box2D is a 2D rigid body simulation library for games.
Programmers can use it in their games to make objects move in realistic ways and
make the game world more interactive.  From the game engine's point of view, a
physics engine is just a system for procedural animation.")
    (license license:expat)))

(define-public libtcod
  (package
    (name "libtcod")
    (version "1.15.1")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/libtcod/libtcod")
                    (commit version)))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "0pzr8ajmbqvh43ldjajx962xirj3rf8ayh344p6mqlrmb8gxrfr5"))
              (modules '((guix build utils)))
              (snippet '(begin
                          (delete-file-recursively "src/vendor/utf8proc")
                          (delete-file-recursively "src/vendor/zlib")
                          (delete-file "src/vendor/stb_truetype.h")
                          (delete-file "src/vendor/stb_sprintf.h")
                          (delete-file "src/vendor/lodepng.cpp")
                          (delete-file "src/vendor/lodepng.h")

                          (substitute* "buildsys/autotools/sources.am"
                            (("\\.\\./\\.\\./src/vendor/lodepng\\.cpp \\\\\n") "")
                            (("\\.\\./\\.\\./src/vendor/stb\\.c \\\\")
                             "../../src/vendor/stb.c")
                            (("\\.\\./\\.\\./src/vendor/utf8proc/utf8proc\\.c") ""))

                          (substitute* "src/libtcod/sys_sdl_img_png.cpp"
                            (("\\.\\./vendor/") ""))

                          (substitute* '("src/libtcod/color/canvas.cpp"
                                         "src/libtcod/sys_sdl_img_png.cpp"
                                         "src/libtcod/tileset/truetype.cpp"
                                         "src/libtcod/tileset/tilesheet.cpp")
                            (("\\.\\./\\.\\./vendor/") ""))

                          (substitute* "src/libtcod/console/printing.cpp"
                            (("\\.\\./\\.\\./vendor/utf8proc/") ""))
                          #t))))
    (build-system gnu-build-system)
    (arguments
     `(#:configure-flags '("--with-gnu-ld"
                           "LIBS=-lutf8proc -llodepng")
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'change-to-build-dir
           (lambda _
             (chdir "buildsys/autotools")
             (patch-shebang "get_version.py"))))))
    (native-inputs
     (list autoconf
           automake
           libtool
           python
           pkg-config
           stb-sprintf
           stb-truetype))
    (inputs
     (list lodepng sdl2 utf8proc zlib))
    (home-page "https://github.com/libtcod/libtcod")
    (synopsis "Library specifically designed for writing roguelikes")
    (description
     "libtcod is a fast, portable and uncomplicated API for roguelike
developers providing an advanced true color console, input, and lots of other
utilities frequently used in roguelikes.")
    (license license:bsd-3)))

(define-public warsow-qfusion
  ;; As of 2020-04-09, the latest stable version 2.1.0 is deprecated.
  ;; The 2.5 beta as published on the homepage is commit
  ;; c4de15df559410aff0ca6643724e24cddb0ecbbd
  (let ((commit "c4de15df559410aff0ca6643724e24cddb0ecbbd"))
    (package
      (name "warsow-qfusion")
      (version (git-version "2.5" "1" commit)) ; 2.5-beta
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://github.com/Warsow/qfusion/")
                      (commit commit)
                      (recursive? #t)))
                (file-name (git-file-name name version))
                (sha256
                 (base32
                  "0xv2yycr43p3xmq7lm6j6zb3cpcr6w00x7qg918faq0mw9j7v48g"))
                ;; Issue reported here: https://github.com/Warsow/qfusion/issues/46
                (patches (search-patches "warsow-qfusion-fix-bool-return-type.patch"))
                (modules '((guix build utils)))
                (snippet '(begin
                            (delete-file-recursively "platforms")
                            (delete-file-recursively "debian")
                            (delete-file-recursively "libsrcs")
                            #t))))
      (build-system cmake-build-system)
      (arguments
       `(#:tests? #f                    ; No tests.
         #:configure-flags '("-DQFUSION_GAME=Warsow")
         #:modules
         ((guix build utils)
          (guix build cmake-build-system)
          (ice-9 match))
         #:phases
         (modify-phases %standard-phases
           (add-after 'unpack 'change-to-build-dir
             (lambda _
               (chdir "source")
               #t))
           (add-after 'install 'really-install
             (lambda* (#:key outputs system #:allow-other-keys)
               (let ((arch (match system
                             ("x86_64-linux" "x86_64")
                             ("i686-linux" "i386")))
                     (out (assoc-ref outputs "out")))
                 (install-file (string-append "../source/build/basewsw/libgame_"
                                              arch ".so")
                               (string-append out "/lib/"))
                 (install-file (string-append "../source/build/libui_" arch ".so")
                               (string-append out "/lib/"))
                 (for-each
                  (lambda (file)
                    (install-file file (string-append out "/bin/")))
                  (append (find-files "../source/build" "warsow")
                          (find-files "../source/build" "wsw_server."))))
               #t)))))
      (inputs
       `(("alsa-lib" ,alsa-lib)
         ("curl" ,curl)
         ("freetype" ,freetype)
         ("ffmpeg" ,ffmpeg-4)
         ("libjpeg" ,libjpeg-turbo)
         ("libogg" ,libogg)
         ("libpng" ,libpng)
         ("libtheora" ,libtheora)
         ("libvorbis" ,libvorbis)
         ("mesa" ,mesa)
         ("openal" ,openal)
         ("pulseaudio" ,pulseaudio)
         ("qtbase" ,qtbase-5)
         ("qtdeclarative-5" ,qtdeclarative-5)
         ("sdl2" ,sdl2)
         ("uuid.h" ,util-linux "lib")
         ("zlib" ,zlib)))
      (native-inputs
       (list pkg-config))
      (home-page "https://github.com/Warsow/qfusion")
      (supported-systems '("i686-linux" "x86_64-linux"))
      (synopsis "Warsow's fork of qfusion, the id Tech 2 derived game engine")
      (description
       "This package contains the game engine of Warsow, a first-person
shooter video game.  The engine is based on qfusion, the id Tech 2 derived
game engine.  id Tech 2 is the engine originally behind Quake 2.")
      (license license:gpl2+))))

(define-public dhewm3
  (package
    (name "dhewm3")
    (version "1.5.2")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://github.com/dhewm/dhewm3/releases/download/"
                    version "/dhewm3-" version "-src.tar.xz"))
              (sha256
               (base32
                "10p0w1x5wx9b7d8mzvb6yqjia9prhkjwz04vbvphy8p383r33am6"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f                      ; No tests.
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'change-to-build-dir
           (lambda _
             (chdir "neo"))))))
    (inputs
     (list curl
           libx11
           openal
           sdl2
           zlib))
    (home-page "https://dhewm3.org/")
    (synopsis "Port of the original Doom 3 engine")
    (description
     "@command{dhewm3} is a source port of the original Doom 3 engine (not
Doom 3: BFG Edition), also known as id Tech 4.  Compared to the original
version of the Doom 3 engine, dhewm3 has many bugfixes, supports EAX-like
sound effects on all operating systems and hardware (via OpenAL Softs EFX
support), has much better support for widescreen resolutions and has 64bit
support.")
    (license license:gpl3)))

(define-public tesseract-engine
  (let ((svn-revision 2411))
    (package
      (name "tesseract-engine")
      (version (string-append "20200615-" (number->string svn-revision)))
      (source
       (origin
         (method svn-fetch)
         (uri (svn-reference
               (url "svn://svn.tuxfamily.org/svnroot/tesseract/main")
               (revision svn-revision)))
         (file-name (git-file-name name version))
         (sha256
          (base32 "1av9jhl2ivbl7wfszyhyna84llvh1z2d8khkmadm8d105addj10q"))
         (modules '((guix build utils)))
         (snippet
          '(begin
             (for-each delete-file-recursively
                       '("bin" "bin64"
                         ;; Remove "media" since some files such as
                         ;; media/sound/game/soundsnap/info.txt refer to a
                         ;; non-commercial license.
                         "media"
                         "server.bat"
                         "tesseract.bat"
                         "src/lib"
                         "src/lib64"))
             #t))))
      (build-system gnu-build-system)
      (arguments
       `(#:make-flags (list "CC=gcc")
         #:tests? #f                    ; No tests.
         #:phases
         (modify-phases %standard-phases
           (delete 'configure)
           (add-after 'unpack 'cd-src
             (lambda _ (chdir "src") #t))
           (add-before 'build 'fix-env
             (lambda* (#:key inputs #:allow-other-keys)
               (setenv "CPATH"
                       (string-append
                        (search-input-directory inputs "include/SDL2")
                        ":" (or (getenv "CPATH") "")))))
           (add-after 'install 'really-install
             (lambda* (#:key outputs #:allow-other-keys)
               (let* ((out (assoc-ref outputs "out"))
                      (share (string-append out "/share/tesseract"))
                      (bin (string-append out "/bin/tesseract"))
                      (client (string-append out "/bin/tesseract-client")))
                 (chdir "..")           ; Back to root.
                 (for-each
                  (lambda (dir)
                    (mkdir-p (string-append share "/" dir))
                    (copy-recursively dir (string-append share "/" dir)))
                  '("config"))
                 (mkdir-p (string-append out "/bin/"))
                 (copy-file "bin_unix/native_client" client)
                 (copy-file "bin_unix/native_server"
                            (string-append out "/bin/tesseract-server"))
                 (call-with-output-file bin
                   (lambda (p)
                     (format p "#!~a
TESS_DATA=~a
TESS_BIN=~a
TESS_OPTIONS=\"-u$HOME/.tesseract\"
cd \"$TESS_DATA\"
exec \"$TESS_BIN\" \"$TESS_OPTIONS\" \"$@\""
                             (which "bash")
                             share
                             client)))
                 (chmod bin #o755)
                 (install-file "src/readme_tesseract.txt"
                               (string-append out "/share/licenses/tesseract/LICENSE")))
               #t)))))
      (inputs
       `(("sdl2-union" ,(sdl-union (list sdl2 sdl2-mixer sdl2-image)))
         ("zlib" ,zlib)
         ("libpng" ,libpng)
         ("libgl" ,mesa)))
      (home-page "http://tesseract.gg/")
      (synopsis "First-person shooter engine with map editing, instagib, DM and CTF")
      (description "This package contains the game engine of Tesseract, a
first-person shooter focused on cooperative in-game map editing.

The engine is derived from @emph{Cube 2: Sauerbraten} technology but with
upgraded modern rendering techniques.  The new rendering features include
fully dynamic omnidirectional shadows, global illumination, HDR lighting,
deferred shading, morphological / temporal / multisample anti-aliasing, and
much more.")
      (license license:zlib))))

(define-public recastnavigation
  ;; We follow master since there hasn't been a release since 1.5.1 in 2016.
  (let ((commit "6d1f9711b3b71f28c2c1c0742d76e0ef8766cf91")
        (revision "2"))
    (package
      (name "recastnavigation")
      (version (git-version "1.5.1" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://github.com/recastnavigation/recastnavigation")
                      (commit commit)))
                (file-name (git-file-name name version))
                (sha256
                 (base32
                  "0cqp0sbm0ixqnxqz6gf2gybh5l4az91mdsd8b5bgxs1wpl2jmnga"))))
      (build-system cmake-build-system)
      (arguments
       `(#:configure-flags (list "-DBUILD_SHARED_LIBS=ON"
                                 "-DRECASTNAVIGATION_DEMO=OFF"
                                 "-DRECASTNAVIGATION_TESTS=ON"
                                 "-DRECASTNAVIGATION_EXAMPLES=OFF")))
      (synopsis "Navigation system for games")
      (description "Recast is state of the art navigation mesh
construction toolset for games.

@itemize
@item It is automatic, which means that you can throw any level geometry
      at it and you will get robust mesh out.
@item It is fast which means swift turnaround times for level designers.
@end itemize

The Recast process starts with constructing a voxel mold from a level
geometry and then casting a navigation mesh over it.  The process
consists of three steps, building the voxel mold, partitioning the mold
into simple regions, peeling off the regions as simple polygons.

Recast is accompanied with Detour, path-finding and spatial reasoning
toolkit.  You can use any navigation mesh with Detour, but of course the
data generated with Recast fits perfectly.

Detour offers simple static navigation mesh which is suitable for many
simple cases, as well as tiled navigation mesh which allows you to plug
in and out pieces of the mesh.  The tiled mesh allows you to create
systems where you stream new navigation data in and out as the player
progresses the level, or you may regenerate tiles as the world changes.")
      (home-page "https://github.com/recastnavigation/recastnavigation")
      (license license:zlib))))

(define-public raylib
  (package
    (name "raylib")
    (version "4.5.0")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/raysan5/raylib/")
                    (commit version)))
              (file-name (git-file-name name version))
              ;; TODO: Unbundle src/external
              (sha256
               (base32
                "00y8fsa4g9fk93s3wihbxl929m84hw3fflr0h409s3i1kfmv7ajj"))))
    (build-system cmake-build-system)
    (arguments
     (list #:tests? #f  ;no test
           #:configure-flags
           #~(list "-DBUILD_SHARED_LIBS=ON"
                   "-DUSE_EXTERNAL_GLFW=ON"
                   "-DCMAKE_C_FLAGS=-lpulse")
           #:phases
           #~(modify-phases %standard-phases
               (add-before 'configure 'configure-miniaudio
                 ;; Use PulseAudio as raudio backend.
                 (lambda _
                   (substitute* "src/raudio.c"
                     (("^#include \"external/miniaudio\\.h\"") "
#define MA_NO_RUNTIME_LINKING
#define MA_ENABLE_ONLY_SPECIFIC_BACKENDS
#define MA_ENABLE_PULSEAUDIO
#include \"external/miniaudio.h\"
")))))))
    (inputs (list glfw pulseaudio))
    (native-inputs (list pkg-config))
    (synopsis "C library for videogame programming")
    (description
     "raylib is a high-level library for video game programming.  It aims to
  abstract away platform and graphics details, allowing you to focus on
  writing your game.")
    (home-page "https://www.raylib.com/")
    (license license:zlib)))

(define-public bbcsdl
  (package
    (name "bbcsdl")
    (version "1.35a")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/rtrussell/BBCSDL/")
                    (commit "b9b2a3eb438cb799edb2766055b3c38e9518e3e3")))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1d03xmhrl6ba6w0vwfk46mpyc9d0w3bixxj2d4irx7wl7bh3bfic"))))
    (build-system gnu-build-system)
    (arguments
     (list
      #:tests? #f                       ; XXX: tests not automated
      #:phases
      #~(modify-phases %standard-phases
          (delete 'configure)           ; no configure script
          (replace 'build
            (lambda* (#:key outputs #:allow-other-keys)
              ;; 'makefile' expects the source directory to be named 'BBCSDL'.
              (symlink "source" "../BBCSDL")
              ;; 'bbcsdl' finds 'libstb.so' in its RPATH.
              (substitute* "bin/linux/makefile"
                (("-Wl,-R,'\\$\\$ORIGIN'")
                 (string-append "-Wl,-rpath="
                                (assoc-ref outputs "out") "/opt/bbcsdl")))
              ;; Build 'bbcbasic' and 'bbcsdl'.
              (invoke "make" "-C" "console/linux")
              (invoke "make" "-C" "bin/linux")))
          (replace 'install
            (lambda* (#:key inputs outputs #:allow-other-keys)
              (let* ((out (assoc-ref outputs "out"))
                     (opt (string-append out "/opt/bbcsdl"))
                     (bin (string-append out "/bin")))
                (for-each
                 (lambda (f)
                   (copy-recursively f (string-append opt "/" f)))
                 ;; Those files need to be installed into the same difertory.
                 '("lib" "examples" "bbcsdl.bbc"
                   "libstb.so" "bbcsdl" "bbcbasic"))
                ;; Replace bundled fonts.
                (for-each
                 (lambda (font)
                   (delete-file (string-append opt "/lib/" font))
                   (symlink
                    (search-input-file
                     inputs (string-append "share/fonts/truetype/" font))
                    (string-append opt "/lib/" font)))
                 '("DejaVuSans.ttf" "DejaVuSansMono.ttf"
                   "FreeSans.ttf" "FreeMono.ttf" "FreeSerif.ttf"))
                (mkdir bin)
                (symlink (string-append opt "/bbcsdl")
                         (string-append bin "/bbcsdl"))
                (symlink (string-append opt "/bbcbasic")
                         (string-append bin "/bbcbasic"))))))))
    (native-inputs (list nasm))
    (inputs (list sdl2 sdl2-ttf sdl2-net font-dejavu font-gnu-freefont))
    (synopsis "BBC BASIC for SDL 2.0")
    (home-page "https://www.bbcbasic.co.uk/bbcsdl/")
    (description
     "BBC BASIC is the programming language originally specified and adopted
by the British Broadcasting Corporation for its groundbreaking Computer
Literacy Project of the early 1980s.  BBC BASIC for SDL 2.0 combines the
simplicity of BASIC with the sophistication of a modern structured language,
allowing you to write utilities and games, use sound and graphics, perform
calculations and create complete applications.")
    (license license:zlib)))

debug log:

solving 9c2a322c57 ...
found 9c2a322c57 in https://yhetil.org/guix-patches/20230528081107.24209-3-hako@ultrarare.space/ ||
	https://yhetil.org/guix-patches/20230528125613.9423-3-hako@ultrarare.space/
found 75957f7a6b in https://git.savannah.gnu.org/cgit/guix.git
preparing index
index prepared:
100644 75957f7a6bb66ba2f30ad441b2cbe1f67956d440	gnu/packages/game-development.scm

applying [1/1] https://yhetil.org/guix-patches/20230528081107.24209-3-hako@ultrarare.space/
diff --git a/gnu/packages/game-development.scm b/gnu/packages/game-development.scm
index 75957f7a6b..9c2a322c57 100644

Checking patch gnu/packages/game-development.scm...
Applied patch gnu/packages/game-development.scm cleanly.

skipping https://yhetil.org/guix-patches/20230528125613.9423-3-hako@ultrarare.space/ for 9c2a322c57
index at:
100644 9c2a322c578fbadc28383649378968986644d861	gnu/packages/game-development.scm

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/guix.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).