aboutsummaryrefslogtreecommitdiff
path: root/devtools/tasmrecover/dreamweb/vgagrafx.asm
blob: 1d8e5f5dc782d159182ff5752a0246d46fc02bca (plain)
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
;Copyright (c) 1990-2011 by Neil Dodwell
;Released with permission from Neil Dodwell under GPLv2
;See LICENSE file for full license text
Screenwidth	equ	320		;physical width of screen



Allocatework	proc	near

	mov	bx,1000h
	call	allocatemem
	mov	workspace,ax
	ret

	endp





Showpcx	proc	near

	call	openfile
	mov	bx,handle
	mov	ds,workspace
	mov	ah,3fh
	mov	cx,128
	mov	dx,0
	int	21h

	mov	ds,workspace
	mov	si,16
	mov	cx,48
	mov	es,buffers
	mov	di,maingamepal
pcxpal:	push	cx
	call	readabyte
	shr	al,1
	shr	al,1
	stosb
	pop	cx
	loop	pcxpal
	mov	cx,768-48
	mov	ax,0ffffh
	rep	stosw

	call	readoneblock
	mov	si,0
	mov	di,0
	mov	cx,480
convertpcx:	push	cx
	push	di
	mov	ds,workspace 
	mov	es,buffers
	mov	di,pointerback
	mov	bx,0
sameline:	call	readabyte
	mov	ah,al
	and	ah,11000000b
	cmp	ah,11000000b
	jnz	normal
	mov	cl,al
	and	cl,00111111b
	mov	ch,0
	push	cx
	call	readabyte
	pop	cx
	add	bx,cx
	rep	stosb
	cmp	bx,4*80
	jnz	sameline
	jmp	endline
normal:	stosb
	inc	bx
	cmp	bx,4*80
	jnz	sameline

endline:	pop	di
	push	si
	mov	dx,0a000h
	mov	es,dx
	mov	si,pointerback
	mov	ds,buffers

	mov	dx,03c4h
	mov	al,2
	mov	ah,1
	out	dx,ax
	mov	cx,40
	push	di
	rep	movsw
	pop	di
	mov	ah,2
	out	dx,ax
	mov	cx,40
	push	di
	rep	movsw
	pop	di
	mov	ah,4
	out	dx,ax
	mov	cx,40
	push	di
	rep	movsw
	pop	di
	mov	ah,8
	out	dx,ax
	mov	cx,40
	rep	movsw

	pop	si
	pop	cx
	loop	convertpcx

	mov	bx,handle
	call	closefile
	ret

	endp




Readabyte	proc	near

	cmp	si,30000
	jnz	notendblock
	push	bx es di ds si
	call	readoneblock
	pop	si ds di es bx
	mov	si,0
notendblock:	lodsb
	ret
	
	endp




Readoneblock	proc	near

	mov	bx,handle
	mov	ah,3fh
	mov	ds,workspace
	mov	ah,3fh
	mov	cx,30000
	mov	dx,0
	int	21h
	ret

	endp








Loadpalfromiff	proc	near

	mov	dx,offset cs:palettescreen
	call	openfile
	mov	cx,2000
	mov	ds,mapstore
	mov	dx,0
	call	readfromfile
	call	closefile
	mov	es,buffers
	mov	di,maingamepal
	mov	ds,mapstore
	mov	si,30h
	mov	cx,768
palloop:	lodsb
	shr	al,1
	shr	al,1

	cmp	brightness,1
	jnz	nought
	cmp	al,0
	jz	nought
       	mov	ah,al
	shr	ah,1
	add	al,ah
	shr	ah,1
	add	al,ah
	cmp	al,64
	jc	nought
	mov	al,63

nought:	stosb
	loop	palloop
	ret

	endp






Setmode	proc	near

	call	vsync
	mov	ah,12h
	mov	al,1
	mov	bl,33h
	int	10h

	mov	ah,0
	mov	al,13h
	int	10h
	
	mov	al,6	; sets graphic controller
	mov	dx,3ceh 	; register 6 (MM) to 1 - 64K
	out	dx,al
	inc	dx
	in	al,dx
	and	al,11110011b
	or	al,00000100b
	out	dx,al

	mov	al,4	; sets sequencer
	mov	dx,3c4h 	; register 4 (EM) to 1 - >64K
	out	dx,al
	inc	dx
	in	al,dx
	and	al,11111101b
	or	al,00000010b
	out	dx,al

	mov	al,13h		;give screen 16 extra hidden
	mov	dx,3d4h 		;pixels at one side
	out	dx,al
	inc	dx
	mov	al,screenwidth/8 ; width of screen
	out	dx,al

	mov	al,8h
	mov	dx,3d4h
	out	dx,al
	inc	dx
	mov	al,00000000b
	out	dx,al

	mov	al,11h
	mov	dx,3d4h
	out	dx,al
	inc	dx
	in	al,dx
	or	al,128
	out	dx,al

	mov	al,00
	mov	dx,3d4h
	out	dx,al
	inc	dx
	mov	al,3fh
	out	dx,al
	mov	al,01
	mov	dx,3d4h
	out	dx,al
	inc	dx
	mov	al,3fh
	out	dx,al
	ret
	
	endp



Cls	proc	near

	mov	ax,0a000h
	mov	es,ax
	mov	di,0
	mov	cx,7fffh
	mov	ax,0
	rep	stosw
	ret

	endp



Printundermon	proc	near		;prints workspace through the text

	mov	si,(screenwidth*43)+76
	mov	di,si
	mov	es,workspace
	add	si,8*screenwidth
	mov	dx,0a000h
	mov	ds,dx
	mov	cx,104
scrollmonloop1: push	cx di si
	mov	cx,170
scrollmonloop2: lodsb
	cmp	al,231
	jnc	dontplace
placeit:	stosb
	loop	scrollmonloop2
	jmp	finmonscroll
dontplace:	inc	di
	loop	scrollmonloop2

finmonscroll:	pop	si di cx
	add	si,screenwidth
	add	di,screenwidth
	loop	scrollmonloop1
	ret

	endp








Worktoscreen	proc	near

	call	vsync
	mov	si,0
	mov	di,0
	mov	cx,25
	mov	ds,workspace
	mov	dx,0a000h
	mov	es,dx

dumpallloop:	call	width160
	call	width160
	call	width160
	call	width160
	call	width160
	call	width160
	call	width160
	call	width160
	loop	dumpallloop

	ret

	endp









;
;Worktoscreen2	proc	near
;
;	call	showpointer
;
;	mov	ds,workspace
;	mov	dx,0a000h
;	mov	es,dx
;
;	mov	si,320-16
;	mov	di,320-16
;	mov	bl,33
;	mov	cx,16
;screen2loop1:	push	di si cx
;	call	vsync
;	cmp	bl,21
;	jc	screen2loop2
;	sub	cx,16
;	jz	isoneblock
;screen2loop2:	movsw
;	movsw
;	movsw
;	movsw
;	movsw
;	movsw
;	movsw
;	movsw
;	add	di,320-15
;	add	si,320-15
;	loop	screen2loop2
;isoneblock:	mov	cx,16
;	mov	ax,320-15
;oneblockloop:	push	cx
;	rep	movsb
;	pop	cx
;	add	si,ax
;	add	di,ax
;	inc	ax
;	loop	oneblockloop
;
;	pop	cx si di
;	add	cx,16
;	cmp	cx,200
;	jc	itsallright
;	mov	cx,200
;itsallright:	sub	si,16
;	sub	di,16
;	dec	bl
;	jnz	screen2loop1
;
;	call	delpointer
;	ret
;
;	endp
;
;
;
;




Paneltomap	proc	near

	mov	di,mapxstart
	add	di,mapadx
	mov	bx,mapystart
	add	bx,mapady
	mov	ds,mapstore
	mov	si,0
	mov	cl,mapxsize
	mov	ch,mapysize
	call	multiget
	ret

	endp



Maptopanel	proc	near

	mov	di,mapxstart
	add	di,mapadx
	mov	bx,mapystart
	add	bx,mapady
	mov	ds,mapstore
	mov	si,0
	mov	cl,mapxsize
	mov	ch,mapysize
	call	multiput

	ret

	endp





Dumpmap	proc	near

	mov	di,mapxstart
	add	di,mapadx
	mov	bx,mapystart
	add	bx,mapady
	mov	cl,mapxsize
	mov	ch,mapysize
	call	multidump
	ret

	endp

	


Pixelcheckset	proc	near		;al=x, ah=y, es:bx=setlist pos
				;checks exact pixel in a frame
	push	ax
	sub	al,[es:bx]		;for detection.
	sub	ah,[es:bx+1]		;al,ah now holds offset within
				;the frame
	push	es bx cx ax
	mov	al,[es:bx+4]		;object number
	call	getsetad
	mov	al,[es:bx+17]		;finds frame number
	mov	es,setframes
	mov	bx,framedata
	mov	ah,0
	mov	cx,6
	mul	cx
	add	bx,ax		;get data for this frame in es:bx
	pop	ax

	push	ax
	mov	al,ah
	mov	ah,0
	mov	cl,[es:bx]
	mov	ch,0
	mul	cx
	pop	cx
	mov	ch,0
	add	ax,cx		;ax now holds offset from corner
				;of the frame
	add	ax,[es:bx+2]
	mov	bx,ax		;es:bx now holds offset of pixel!
	add	bx,frames

	mov	al,[es:bx]
	mov	dl,al
	pop	cx bx es ax
	cmp	dl,0
	ret

	endp












Createpanel	proc	near

	mov	di,0
	mov	bx,8
	mov	ds,icons2
	mov	al,0
	mov	ah,2
	call	showframe ;spritef
	mov	di,160
	mov	bx,8
	mov	ds,icons2
	mov	al,0
	mov	ah,2
	call	showframe ;spritef
	mov	di,0
	mov	bx,104
	mov	ds,icons2
	mov	al,0
	mov	ah,2
	call	showframe ;spritef
	mov	di,160
	mov	bx,104
	mov	ds,icons2
	mov	al,0
	mov	ah,2
	call	showframe ;spritef
	ret

	endp



Createpanel2	proc	near

	call	createpanel
	mov	di,0
	mov	bx,0
	mov	ds,icons2
	mov	al,5
	mov	ah,2
	call	showframe
	mov	di,160
	mov	bx,0
	mov	ds,icons2
	mov	al,5
	mov	ah,2
	call	showframe
	ret

	endp






;Showspritef	proc	near
;
;	mov	ax,bx
;	mov	bx,screenwidth
;	mul	bx
;	add	di,ax
;	mov	dx,screenwidth
;	mov	es,workspace
;	mov	si,2080
;	mov	ah,0
;	add	ax,ax
;	mov	bx,ax
;	add	ax,ax
;	add	bx,ax
;	add	si,[bx+2]
;	mov	cx,[bx+0]
;spritefloop:	push	cx di
;	call	width80
;	pop	di cx
;	add	di,dx
;	dec	ch
;	jnz	spritefloop
;	ret
;
;	endp
;
;








Clearwork	proc	near

	mov	ax,0h
	mov	es,workspace
	mov	di,0
	mov	cx,(200*320)/64
clearloop:	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	loop	clearloop
	ret

	endp






Vsync	proc	near

	push	ax bx cx dx si di ds es

	mov	dx,03dah
loop2:	in	al,dx
	test	al,8
	jz	loop2
loop1:	in	al,dx
	test	al,8
	jnz	loop1

	call	doshake
	call	dofade
	if	debuglevel2
	call	debugkeys
	endif
	pop	es ds di si dx cx bx ax
	ret
	
	endp



Doshake	proc	near

	cmp	shakecounter,48
	jz	finishshake
            	inc	shakecounter
	mov	bl,shakecounter
	mov	bh,0
	add	bx,offset cs:shaketable
	mov	al,10h
	mov	dx,3d4h
	out	dx,al
	inc	dx
	mov	al,[cs:bx]
	out	dx,al
finishshake:	ret

shaketable:	db	9ch,9ah,9fh,9ah,9ch,9eh,0a0h,9bh,9dh,99h,9fh,9eh
	db	9ch,9ah,9fh,9ah,9ch,9eh,0a0h,9bh,9dh,99h,9fh,9eh
	db	9ch,9ah,9fh,9ah,9ch,9eh,0a0h,9bh,9dh,99h,9fh,9eh
	db	9ch,9ah,9fh,9ah,9ch,9eh,0a0h,9bh,9dh,99h,9fh,9eh
	db	9ch,9ah,9fh,9ah,9ch,9eh,0a0h,9bh,9dh,99h,9fh,9eh
	db	9ch,9ah,9fh,9ah,9ch,9eh,0a0h,9bh,9dh,99h,9fh,9eh
	db	9ch,9ah,9fh,9ah,9ch,9eh,0a0h,9bh,9dh,99h,9fh,9eh
	db	9ch,9ah,9fh,9ah,9ch,9eh,0a0h,9bh,9dh,99h,9fh,9eh
	db	9ch,9ah,9fh,9ah,9ch,9eh,0a0h,9bh,9dh,99h,9fh,9ch

	endp






Zoom	proc	near

	cmp	watchingtime,0
	jnz	inwatching
	cmp	zoomon,1
	jz	zoomswitch
inwatching:	ret

zoomswitch:	cmp	commandtype,199
	jc	zoomit
cantzoom:	call	putunderzoom
	ret

zoomit:	mov	ax,oldpointery
	sub	ax,9
	mov	cx,screenwidth
	mul	cx
	add	ax,oldpointerx
	sub	ax,11
	mov	si,ax

	mov	ax,zoomy+4
	mov	cx,screenwidth
	mul	cx
	add	ax,zoomx+5
	mov	di,ax
	mov	es,workspace
	mov	ds,workspace

	mov	cx,20
zoomloop:	push	cx
	mov	cx,23
zoomloop2:	lodsb
	mov	ah,al
	stosw
	mov	[es:di+screenwidth-2],ax
	loop	zoomloop2
	add	si,screenwidth-23
	add	di,screenwidth-46+screenwidth
	pop	cx
	loop	zoomloop

	call	crosshair
	mov	didzoom,1
	ret

	endp









Delthisone	proc	near

	push	ax
	push	ax
	mov	al,ah
	mov	ah,0
	add	ax,mapady
	mov	bx,screenwidth
	mul	bx
	pop	bx
	mov	bh,0
	add	bx,mapadx
	add	ax,bx
	mov	di,ax
	pop	ax
	push	ax
	mov	al,ah
	mov	ah,0
	mov	bx,22*8
	mul	bx
	pop	bx
	mov	bh,0
	add	ax,bx
	mov	si,ax

	mov	es,workspace
	mov	ds,mapstore
	mov	dl,cl
	mov	dh,0
	mov	ax,screenwidth
	sub	ax,dx
	neg	dx
	add	dx,22*8
deloneloop:	push	cx
	mov	ch,0
	rep	movsb
	pop	cx
	add	di,ax
	add	si,dx
	dec	ch
	jnz	deloneloop
	ret

	endp







;------------------------------------------------------------Pointer update----


Multiget	proc	near		;di,bx = dest x,y
				;cl,ch = size
	mov	ax,bx		;si,di = storage
	mov	bx,screenwidth
	mul	bx
	add	di,ax

	mov	es,workspace
	push	es ds
	pop	es ds
	xchg	di,si
	mov	al,cl
	mov	ah,0
	mov	dx,screenwidth
	sub	dx,ax

	mov	al,cl
	and	al,1
	jnz	oddwidth2

	mov	bl,cl
	mov	bh,0
	mov	ax,offset cs:width0
	shr	bx,1
	sub	ax,bx
	mov	cl,ch
	mov	ch,0
multiloop3:	call	ax
	add	si,dx
	loop	multiloop3
	ret

oddwidth2:	mov	bl,cl
	mov	bh,0
	shr	bx,1
	mov	ax,offset cs:width0
	sub	ax,bx
	mov	cl,ch
	mov	ch,0
multiloop4:	call	ax
	movsb
	add	si,dx
	loop	multiloop4
	ret

	endp







Multiput	proc	near		;di,bx = dest x,y
				;cl,ch = size
	mov	ax,bx		;si,di = storage
	mov	bx,screenwidth
	mul	bx
	add	di,ax

	mov	es,workspace
	mov	al,cl
	mov	ah,0
	mov	dx,screenwidth
	sub	dx,ax

	mov	al,cl
	and	al,1
	jnz	oddwidth3

	mov	bl,cl
	mov	bh,0
	shr	bx,1
	mov	ax,offset cs:width0
	sub	ax,bx
	mov	cl,ch
	mov	ch,0
multiloop5:	call	ax
	add	di,dx
	loop	multiloop5
	ret

oddwidth3:	mov	bl,cl
	mov	bh,0
	shr	bx,1
	mov	ax,offset cs:width0
	sub	ax,bx
	mov	cl,ch
	mov	ch,0
multiloop6:	call	ax
	movsb
	add	di,dx
	loop	multiloop6
	ret


	endp









Multidump	proc	near		;di,bx = dest x,y
				;cl,ch = size
	mov	dx,0a000h
	mov	es,dx
	mov	ds,workspace

	mov	ax,bx
	mov	bx,screenwidth
	mul	bx
	add	di,ax
	mov	dx,screenwidth
	mov	si,di

	mov	al,cl
	and	al,1
	jnz	oddwidth

	mov	bl,cl
	mov	bh,0
	shr	bx,1
	mov	ax,offset cs:width0
	sub	ax,bx
	mov	bl,cl
	mov	bh,0
	neg	bx
	add	bx,dx
	mov	cl,ch
	mov	ch,0
multiloop1:	call	ax
	add	di,bx
	add	si,bx
	loop	multiloop1
	ret

oddwidth:	mov	bl,cl
	mov	bh,0
	shr	bx,1
	mov	ax,offset cs:width0
	sub	ax,bx
	mov	bl,cl
	mov	bh,0
	neg	bx
	add	bx,screenwidth
	mov	cl,ch
	mov	ch,0
multiloop2:	call	ax
	movsb
	add	di,bx
	add	si,bx
	loop	multiloop2
	ret

	endp





Width160	proc	near

	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
width128:	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
width110:	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
width88:	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
width80:	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
width63:	movsw
width62:	movsw
width61:	movsw
width60:	movsw
width59:	movsw
width58:	movsw
width57:	movsw
width56:	movsw
width55:	movsw
width54:	movsw
width53:	movsw
width52:	movsw
width51:	movsw
width50:	movsw
width49:	movsw
width48:	movsw
width47:	movsw
width46:	movsw
width45:	movsw
width44:	movsw
width43:	movsw
width42:	movsw
width41:	movsw
width40:	movsw
width39:	movsw
width38:	movsw	   
width37:	movsw
width36:	movsw
width35:	movsw
width34:	movsw
width33:	movsw
width32:	movsw
width31:	movsw
width30:	movsw
width29:	movsw
width28:	movsw
width27:	movsw
width26:	movsw
width25:	movsw
width24:	movsw
width23:	movsw
width22:	movsw
width21:	movsw
width20:	movsw
width19:	movsw
width18:	movsw
width17:	movsw
width16:	movsw
width15:	movsw
width14:	movsw
width13:	movsw
width12:	movsw
width11:	movsw
width10:	movsw
width9: 	movsw
width8: 	movsw
width7: 	movsw
width6: 	movsw
width5: 	movsw
width4: 	movsw
width3: 	movsw
width2: 	movsw
width1: 	movsw
width0: 	ret

	endp







	

Doblocks	proc	near

	mov	es,workspace
	mov	ax,mapady
	mov	cx,screenwidth
	mul	cx
	mov	di,mapadx
	add	di,ax

	mov	al,mapy
	mov	ah,0
	mov	bx,mapwidth
	mul	bx
	mov	bl,mapx
	mov	bh,0
	add	ax,bx

	mov	si,map
	add	si,ax

	mov	cx,10
loop120:	push	di cx
	mov	cx,11
loop124:	push	cx di

	mov	ds,mapdata
	lodsb
	mov	ds,backdrop

	push	si
	cmp	al,0
	jz	zeroblock
	mov	ah,al
	mov	al,0
	mov	si,blocks
	add	si,ax
	mov	bh,14


	mov	bh,4
firstbitofblock:	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	movsw
	add	di,screenwidth-16
	dec	bh
	jnz	firstbitofblock

	mov	bh,12
loop125:	movsw
	movsw  
	movsw
	movsw
	movsw 
	movsw
	movsw
	movsw
	mov	ax,0dfdfh
	stosw
	stosw

	add	di,screenwidth-20
	dec	bh
	jnz	loop125
	
	add	di,4
	mov	ax,0dfdfh
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	add	di,screenwidth-16
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	add	di,screenwidth-16
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	add	di,screenwidth-16
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw
	stosw


zeroblock:	pop	si
	
	pop	di cx
	add	di,16
	loop	loop124
	add	si,mapwidth-11
	pop	cx di
	add	di,screenwidth*16
	loop	loop120
	ret
	
	endp







;----------------------------------------------General sprite output routine----

Showframe	proc	near 	; shows a frame from sprites

	push	dx ax	; es=destination
	mov	cx,ax	; ds=source
	and	cx,511	; di=x, bx=y
	add	cx,cx	; al=frame number
	mov	si,cx	; ah=effects flag
	add	cx,cx
	add	si,cx
	cmp	word ptr [si],0
	jnz	notblankshow
	pop ax dx
	mov	cx,0
	ret

notblankshow:	test	ah,128
	jnz	skipoffsets
	mov	al,[si+4]
	mov	ah,0
	add	di,ax
	mov	al,[si+5]
	mov	ah,0
	add	bx,ax
skipoffsets:	mov	cx,[si+0]
	mov	ax,[si+2]
	add	ax,2080
	mov	si,ax
	pop	ax dx
	cmp	ah,0
	jz	noeffects

	test	ah,128
	jz	notcentred
	push	ax
	mov	al,cl
	mov	ah,0
	shr	ax,1
	sub	di,ax
	mov	al,ch
	mov	ah,0
	shr	ax,1
	sub	bx,ax
	pop	ax

notcentred:	test	ah,64
	jz	notdiffdest
	push	cx
	call	frameoutfx
	pop	cx
	ret

notdiffdest:	test	ah,8
	jz	notprintlist
	push	ax
	mov	ax,di
	sub	ax,mapadx
	push	bx
	sub	bx,mapady
	mov	ah,bl
	pop	bx
	;call	addtoprintlist
	pop	ax

notprintlist:	test	ah,4
	jz	notflippedx
	mov	dx,screenwidth
	mov	es,workspace
	push	cx
	call	frameoutfx
	pop	cx
	ret

notflippedx:	test	ah,2
	jz	notnomask
	mov	dx,screenwidth
	mov	es,workspace
	push	cx
	call	frameoutnm
	pop	cx
	ret

notnomask:	test	ah,32
	jz	noeffects
	mov	dx,screenwidth
	mov	es,workspace
	push	cx
	call	frameoutbh
	pop	cx
	ret

noeffects:	mov	dx,screenwidth
	mov	es,workspace
	push	cx
	call	frameoutv
	pop	cx		; returns size printed in cx
	ret

	endp










Frameoutv	proc	near

	push	dx
	mov	ax,bx
	mov	bx,dx
	mul	bx
	add	di,ax
	pop	dx

	push	cx
	mov	ch,0
	sub	dx,cx
	pop	cx

frameloop1:	push	cx
	mov	ch,0

frameloop2:	lodsb
	cmp	al,0
	jnz	backtosolid
backtoother:	inc	di
	loop	frameloop2
	pop	cx
	add	di,dx
	dec	ch
	jnz	frameloop1
	ret

frameloop3:	lodsb
	cmp	al,0
	jz	backtoother
backtosolid:	stosb
	loop	frameloop3
	pop	cx
	add	di,dx
	dec	ch
	jnz	frameloop1
	ret

	endp






Frameoutnm	proc	near

	push	dx
	mov	ax,bx
	mov	bx,dx
	mul	bx
	add	di,ax
	pop	dx

	push	cx
	mov	ch,0
	sub	dx,cx
	pop	cx

	mov	al,cl
	and	al,1
	jnz	oddwidthframe

	mov	bl,cl
	mov	bh,0
	mov	ax,offset cs:width0
	shr	bx,1
	sub	ax,bx
	mov	cl,ch
	mov	ch,0
nmloop1:	call	ax
	add	di,dx
	loop		nmloop1
	ret

oddwidthframe:	mov	bl,cl
	mov	bh,0
	shr	bx,1
	mov	ax,offset cs:width0
	sub	ax,bx
	mov	cl,ch
	mov	ch,0
nmloop2:	call	ax
	movsb
	add	di,dx
	loop	nmloop2
	ret

	endp






Frameoutbh	proc	near

	push	dx
	mov	ax,bx
	mov	bx,dx
	mul	bx
	add	di,ax
	pop	dx

	push	cx
	mov	ch,0
	sub	dx,cx
	pop	cx

bhloop2:	push	cx
	mov	ch,0
	mov	ah,255
bhloop1:	cmp	[es:di],ah
	jnz	nofill
	movsb
	loop	bhloop1
	jmp	nextline
nofill:	inc	di
	inc	si
	loop	bhloop1
nextline:	add	di,dx
	pop	cx
	dec	ch
	jnz	bhloop2
	ret
	
	endp







Frameoutfx	proc	near

	push	dx
	mov	ax,bx
	mov	bx,dx
	mul	bx
	add	di,ax
	pop	dx

	push	cx
	mov	ch,0
	add	dx,cx
	pop	cx

frameloopfx1:	push	cx
	mov	ch,0

frameloopfx2:	lodsb
	cmp	al,0
	jnz	backtosolidfx
backtootherfx:	dec	di
	loop	frameloopfx2
	pop	cx
	add	di,dx
	dec	ch
	jnz	frameloopfx1
	ret

frameloopfx3:	lodsb
	cmp	al,0
	jz	backtootherfx
backtosolidfx:	mov	[es:di],al
	dec	di
	loop	frameloopfx3
	pop	cx
	add	di,dx
	dec	ch
	jnz	frameloopfx1
	ret

	endp




;---------------------------------------------------Transfers for extra data----

Transferinv	proc	near

	mov	di,exframepos
	push	di
	mov	al,expos
	mov	ah,0
	mov	bx,ax
	add	ax,ax
	add	ax,bx
	inc	ax
	mov	cx,6
	mul	cx
	mov	es,extras
	mov	bx,exframedata
	add	bx,ax
	add	di,exframes
	
	push	bx
	mov	al,itemtotran
	mov	ah,0
	mov	bx,ax
	add	ax,ax
	add	ax,bx
	inc	ax
	mov	cx,6
	mul	cx
	mov	ds,freeframes
	mov	bx,frframedata
	add	bx,ax
	mov	si,frframes
	mov	al,[bx]
	mov	ah,0
	mov	cl,[bx+1]
	mov	ch,0
	add	si,[bx+2]		;we have si, and length
	mov	dx,[bx+4]
	pop	bx
	mov	[es:bx+0],al
	mov	[es:bx+1],cl
	mov	[es:bx+4],dx

	mul	cx
	mov	cx,ax
	push	cx
	rep	movsb
	pop	cx
	pop	ax
	mov	[es:bx+2],ax
	add	exframepos,cx
	ret

	endp










Transfermap	proc	near

	mov	di,exframepos
	push	di
	mov	al,expos
	mov	ah,0
	mov	bx,ax
	add	ax,ax
	add	ax,bx
	mov	cx,6
	mul	cx
	mov	es,extras
	mov	bx,exframedata
	add	bx,ax
	add	di,exframes
	
	push	bx
	mov	al,itemtotran
	mov	ah,0
	mov	bx,ax
	add	ax,ax
	add	ax,bx
	mov	cx,6
	mul	cx
	mov	ds,freeframes
	mov	bx,frframedata
	add	bx,ax
	mov	si,frframes
	mov	al,[bx]
	mov	ah,0
	mov	cl,[bx+1]
	mov	ch,0
	add	si,[bx+2]		;we have si, and length
	mov	dx,[bx+4]
	pop	bx
	mov	[es:bx+0],al
	mov	[es:bx+1],cl
	mov	[es:bx+4],dx

	mul	cx
	mov	cx,ax
	push	cx
	rep	movsb
	pop	cx
	pop	ax
	mov	[es:bx+2],ax
	add	exframepos,cx
	ret

	endp


;------------------------------------------------------------------Filenames----


Spritename1	db	"DREAMWEB.S00",0
Spritename3	db	"DREAMWEB.S02",0

Idname	db	"INSTALL.DAT",0

Characterset1	db	"DREAMWEB.C00",0
Characterset2	db	"DREAMWEB.C01",0
Characterset3	db	"DREAMWEB.C02",0

Samplename	db	"DREAMWEB.V00",0

Basicsample	db	"DREAMWEB.V99",0

Icongraphics0	db	"DREAMWEB.G00",0
Icongraphics1	db	"DREAMWEB.G01",0
Extragraphics1	db	"DREAMWEB.G02",0
Icongraphics8	db	"DREAMWEB.G08",0
Mongraphicname	db	"DREAMWEB.G03",0
Mongraphics2	db	"DREAMWEB.G07",0
Cityname	db	"DREAMWEB.G04",0
Travelgraphic1	db	"DREAMWEB.G05",0
Travelgraphic2	db	"DREAMWEB.G06",0
Diarygraphic	db	"DREAMWEB.G14",0

Monitorfile1	db	"DREAMWEB.T01",0
Monitorfile2	db	"DREAMWEB.T02",0
Monitorfile10	db	"DREAMWEB.T10",0	;News items 10-13
Monitorfile11	db	"DREAMWEB.T11",0
Monitorfile12	db	"DREAMWEB.T12",0
Monitorfile13	db	"DREAMWEB.T13",0
Monitorfile20	db	"DREAMWEB.T20",0
Monitorfile21	db	"DREAMWEB.T21",0	;Ryan's private stuff
Monitorfile22	db	"DREAMWEB.T22",0	;Use for blank carts
Monitorfile23	db	"DREAMWEB.T23",0	;Use for edens cart
Monitorfile24	db	"DREAMWEB.T24",0	;Use for church cart
Foldertext	db	"DREAMWEB.T50",0
Diarytext	db	"DREAMWEB.T51",0
Puzzletextname	db	"DREAMWEB.T80",0	;puzzle text
Traveltextname	db	"DREAMWEB.T81",0	;location descriptions
Introtextname	db	"DREAMWEB.T82",0	;intro sequence
Endtextname	db	"DREAMWEB.T83",0	;end sequence/credits
Commandtextname	db	"DREAMWEB.T84",0	;commands

Volumetabname	db	"DREAMWEB.VOL",0

Foldergraphic1	db	"DREAMWEB.G09",0
Foldergraphic2	db	"DREAMWEB.G10",0
Foldergraphic3	db	"DREAMWEB.G11",0
Symbolgraphic	db	"DREAMWEB.G12",0
Gungraphic	db	"DREAMWEB.G13",0
Monkface	db	"DREAMWEB.G15",0

Title0graphics	db	"DREAMWEB.I00",0
Title1graphics	db	"DREAMWEB.I01",0
Title2graphics	db	"DREAMWEB.I02",0
Title3graphics	db	"DREAMWEB.I03",0
Title4graphics	db	"DREAMWEB.I04",0
Title5graphics	db	"DREAMWEB.I05",0
Title6graphics	db	"DREAMWEB.I06",0
Title7graphics	db	"DREAMWEB.I07",0

Palettescreen	db	"DREAMWEB.PAL",0