-
Notifications
You must be signed in to change notification settings - Fork 0
/
lib_gfx.bas
2996 lines (2526 loc) · 59 KB
/
lib_gfx.bas
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
ASM
MAC OPEN_BANK3
IFNCONST LIB_GFX_DISABLE_BANK_3
sei
lda #%00110100
sta 1
ENDIF
ENDM
MAC CLOSE_BANK3
IFNCONST LIB_GFX_DISABLE_BANK_3
lda #%00110110
sta 1
cli
ENDIF
ENDM
TRANSPARENT = $fe
FLIP = $ff
END ASM
REM **********************
REM * CONSTANTS *
REM **********************
SHARED CONST STANDARD_CHARACTER_MODE = %00000000
SHARED CONST MULTICOLOR_CHARACTER_MODE = %00010000
SHARED CONST STANDARD_BITMAP_MODE = %00100000
SHARED CONST MULTICOLOR_BITMAP_MODE = %00110000
SHARED CONST EXTENDED_BACKGROUND_COLOR_MODE = %01000000
SHARED CONST INVALID_MODE = %01100000
SHARED CONST ROM_CHARSET_UPPERCASE = 0
SHARED CONST ROM_CHARSET_LOWERCASE = 1
SHARED CONST MODE_SET = 1
SHARED CONST MODE_CLEAR = 0
SHARED CONST MODE_FLIP = $ff
SHARED CONST MODE_TRANSPARENT = $fe
SHARED CONST COLOR_BLACK = $0
SHARED CONST COLOR_WHITE = $1
SHARED CONST COLOR_RED = $2
SHARED CONST COLOR_CYAN = $3
SHARED CONST COLOR_PURPLE = $4
SHARED CONST COLOR_GREEN = $5
SHARED CONST COLOR_BLUE = $6
SHARED CONST COLOR_YELLOW = $7
SHARED CONST COLOR_ORANGE = $8
SHARED CONST COLOR_BROWN = $9
SHARED CONST COLOR_LIGHTRED = $a
SHARED CONST COLOR_DARKGRAY = $b
SHARED CONST COLOR_MIDDLEGRAY = $c
SHARED CONST COLOR_LIGHTGREEN = $d
SHARED CONST COLOR_LIGHTBLUE = $e
SHARED CONST COLOR_LIGHTGRAY = $f
REM **********************
REM * VARIABLES *
REM **********************
DIM _hires_mask0(8) AS BYTE @__hires_mask0
DIM _hires_mask1(8) AS BYTE @__hires_mask1
DIM _hdraw_end_mask(8) AS BYTE @__hdraw_end_mask
DIM _hdraw_start_mask(8) AS BYTE @__hdraw_start_mask
DIM _hdrawmc_end_mask(4) AS BYTE @__hdrawmc_end_mask
DIM _hdrawmc_start_mask(4) AS BYTE @__hdrawmc_start_mask
DIM _mc_mask(4) AS BYTE @__mc_mask
DIM _mc_pattern(4) AS BYTE @__mc_pattern
DIM _bitmap_y_tbl(50) AS WORD
DIM _screen_y_tbl(50) AS WORD
DIM _color_y_tbl_hi(25) AS BYTE @ __color_y_tbl_hi
DIM _color_y_tbl_lo(25) AS BYTE @ __color_y_tbl_lo
DIM _petscii_to_screencode(8) AS BYTE @ __petscii_to_screencode
DIM _nible_to_byte(16) AS BYTE @ __nible_to_byte
DIM _opcodes(3) AS BYTE @ __opcodes
DIM _dbuf_nr AS BYTE
_dbuf_nr = %00000000
DIM _dbuf_on AS BYTE
_dbuf_on = %00000000
DIM _dbuf_d018 AS BYTE
DIM _dbuf_dd00 AS BYTE
REM **********************
REM * PSEUDO REGISTERS *
REM **********************
DIM ZP_W0 AS WORD FAST ' BASE
DIM ZP_W1 AS WORD FAST ' DX
DIM ZP_W2 AS WORD FAST ' COUNT
DIM ZP_I0 AS INT FAST ' DISTANCE
DIM ZP_B0 AS BYTE FAST ' DY
DIM ZP_B1 AS BYTE FAST ' X_INC
DIM ZP_B2 AS BYTE FAST ' Y_INC
DIM ZP_B3 AS BYTE FAST ' PATTERN
DIM ZP_B4 AS BYTE FAST ' MASK
DIM ZP_B5 AS BYTE FAST ' TEMP TEMP0
REM **********************
REM * DECLARATIONS *
REM **********************
DECLARE SUB SetVideoBank(BankNumber AS BYTE) SHARED STATIC
DECLARE SUB SetGraphicsMode(Mode AS BYTE) SHARED STATIC
DECLARE SUB SetScreenMemory(Ptr AS BYTE) SHARED STATIC
DECLARE SUB SetCharacterMemory(Ptr AS BYTE) SHARED STATIC
DECLARE SUB SetBitmapMemory(Ptr AS BYTE) SHARED STATIC
DECLARE SUB ResetScreen() SHARED STATIC
DECLARE SUB DoubleBufferOn() SHARED STATIC
DECLARE SUB DoubleBufferOff() SHARED STATIC
DECLARE SUB BufferSwap() SHARED STATIC
DECLARE SUB ScreenOff() SHARED STATIC
DECLARE SUB ScreenOn() SHARED STATIC
DECLARE SUB FillBitmap(Value AS BYTE) SHARED STATIC
DECLARE SUB FillColors(Color0 AS BYTE, Color1 AS BYTE) SHARED STATIC
DECLARE SUB FillColorsMC(Color0 AS BYTE, Color1 AS BYTE, Color2 AS BYTE, Color3 AS BYTE) SHARED STATIC
DECLARE SUB FillScreenMemory(Value AS BYTE) SHARED STATIC
DECLARE SUB FillColorMemory(Value AS BYTE) SHARED STATIC
DECLARE FUNCTION GetPixel AS BYTE(x AS WORD, y AS BYTE) SHARED STATIC
DECLARE FUNCTION GetPixelMC AS BYTE(x AS BYTE, y AS BYTE) SHARED STATIC
DECLARE SUB Plot(x AS WORD, y AS BYTE, Mode AS BYTE) SHARED STATIC
DECLARE SUB PlotMC(x AS BYTE, y AS BYTE, Ink AS BYTE) SHARED STATIC
DECLARE SUB Draw(x0 AS WORD, y0 AS BYTE, x1 AS WORD, y1 AS BYTE, Mode AS BYTE) SHARED STATIC
DECLARE SUB DrawMC(x0 AS BYTE, y0 AS BYTE, x1 AS BYTE, y1 AS BYTE, Ink AS BYTE) SHARED STATIC
DECLARE SUB HDraw(x0 AS WORD, x1 AS WORD, y AS BYTE, Mode AS BYTE) SHARED STATIC
DECLARE SUB HDrawMC(x0 AS BYTE, x1 AS BYTE, y AS BYTE, Ink AS BYTE) SHARED STATIC
DECLARE SUB VDraw(x AS WORD, y0 AS BYTE, y1 AS BYTE, Mode AS BYTE) SHARED STATIC
DECLARE SUB VDrawMC(x AS BYTE, y0 AS BYTE, y1 AS BYTE, Ink AS BYTE) SHARED STATIC
DECLARE SUB Rect(x0 AS WORD, y0 AS BYTE, x1 AS WORD, y1 AS BYTE, Mode AS BYTE, FillMode AS BYTE) SHARED STATIC
DECLARE SUB RectMC(x0 AS BYTE, y0 AS BYTE, x1 AS BYTE, y1 AS BYTE, Ink AS BYTE, Fill AS BYTE) SHARED STATIC
DECLARE SUB Circle(x0 AS WORD, y0 AS BYTE, Radius AS BYTE, Mode AS BYTE, BgMode AS BYTE) SHARED STATIC
DECLARE SUB CircleMC(x0 AS BYTE, y0 AS BYTE, Radius AS BYTE, Ink AS BYTE, FillInk AS BYTE) SHARED STATIC
DECLARE SUB CopyCharROM(CharSet AS BYTE, DestAddr AS WORD) SHARED STATIC
DECLARE SUB TextMC(Col AS BYTE, Row AS BYTE, Ink AS BYTE, Bg AS BYTE, Double AS BYTE, Text AS STRING * 40, RomCharSet AS BYTE) SHARED STATIC OVERLOAD
DECLARE SUB TextMC(Col AS BYTE, Row AS BYTE, Ink AS BYTE, Bg AS BYTE, Double AS BYTE, Text AS STRING * 40, CharMemAddr AS WORD) SHARED STATIC OVERLOAD
DECLARE SUB Text(Col AS BYTE, Row AS BYTE, Mode AS BYTE, BgMode AS BYTE, Double AS BYTE, Text AS STRING * 40, RomCharSet AS BYTE) SHARED STATIC OVERLOAD
DECLARE SUB Text(Col AS BYTE, Row AS BYTE, Mode AS BYTE, BgMode AS BYTE, Double AS BYTE, Text AS STRING * 40, CharMemAddr AS WORD) SHARED STATIC OVERLOAD
DECLARE SUB SetColorInRect(x0 AS BYTE, y0 AS BYTE, x1 AS BYTE, y1 AS BYTE, Ink AS BYTE, ColorId AS BYTE) SHARED STATIC
DECLARE SUB WaitRasterLine256() SHARED STATIC
DECLARE FUNCTION PetsciiToScreenCode AS BYTE(Petscii AS BYTE) SHARED STATIC
DECLARE SUB _calc_bitmap_table() STATIC
DECLARE SUB _calc_screen_table() STATIC
REM **********************
REM * FUNCTIONS *
REM **********************
SUB RectMC(x0 AS BYTE, y0 AS BYTE, x1 AS BYTE, y1 AS BYTE, Ink AS BYTE, Fill AS BYTE) SHARED STATIC
IF Ink <> MODE_TRANSPARENT THEN
CALL HDrawMC(x0, x1, y0, Ink)
CALL HDrawMC(x0, x1, y1, Ink)
CALL VDrawMC(x0, y0, y1, Ink)
CALL VDrawMC(x1, y0, y1, Ink)
END IF
IF Fill <> MODE_TRANSPARENT THEN
ASM
inc {x0}
dec {x1}
inc {y0}
dec {y1}
END ASM
FOR Y AS BYTE = y0 TO y1
CALL HDrawMC(x0, x1, Y, Fill)
NEXT Y
END IF
END SUB
SUB Rect(x0 AS WORD, y0 AS BYTE, x1 AS WORD, y1 AS BYTE, Mode AS BYTE, FillMode AS BYTE) SHARED STATIC
IF Mode <> MODE_TRANSPARENT THEN
CALL HDraw(x0, x1, y0, Mode)
CALL HDraw(x0, x1, y1, Mode)
CALL VDraw(x0, y0, y1, Mode)
CALL VDraw(x1, y0, y1, Mode)
END IF
IF FillMode <> MODE_TRANSPARENT THEN
ASM
inc {x0}
bne _rect_no_inc
inc {x0}+1
_rect_no_inc
lda {x1}
bne _rect_no_dec
dec {x1}+1
_rect_no_dec
dec {x1}
inc {y0}
dec {y1}
END ASM
FOR Y AS BYTE = y0 TO y1
CALL HDraw(x0, x1, Y, FillMode)
NEXT Y
END IF
END SUB
SUB FillBitmap(Value AS BYTE) SHARED STATIC
ASM
OPEN_BANK3
lda {_dbuf_nr}
eor {_dbuf_on}
bne _clear_buffer_choose1
_clear_buffer_choose0
lda {Value}
jsr _clear_buffer0
jmp _clear_buffer_end
_clear_buffer_choose1
lda {Value}
jsr _clear_buffer1
_clear_buffer_end
CLOSE_BANK3
END ASM
END SUB
SUB DoubleBufferOn() SHARED STATIC
ASM
;lda $d018
;sta {_dbuf_d018}
;lda $dd00
;sta {_dbuf_dd00}
lda #%00000010
sta {_dbuf_on}
END ASM
END SUB
SUB DoubleBufferOff() SHARED STATIC
_dbuf_on = %00000000
IF _dbuf_nr = %00000010 THEN
CALL BufferSwap()
END IF
END SUB
SUB BufferSwap() SHARED STATIC
ASM
swap_wait1
bit $d011
bmi swap_wait1
swap_wait2
bit $d011
bpl swap_wait2
ldx $d018
lda {_dbuf_d018}
stx {_dbuf_d018}
sta $d018
ldx $dd00
lda {_dbuf_dd00}
stx {_dbuf_dd00}
sta $dd00
lda {_dbuf_nr}
eor #%00000010
sta {_dbuf_nr}
END ASM
END SUB
SUB WaitRasterLine256() SHARED STATIC
ASM
wait1: bit $d011
bmi wait1
wait2: bit $d011
bpl wait2
END ASM
END SUB
SUB ScreenOff() SHARED STATIC
ASM
lda $d011
and #%01101111
sta $d011
END ASM
END SUB
SUB ScreenOn() SHARED STATIC
ASM
lda $d011
and #%01111111
ora #%00010000
sta $d011
END ASM
END SUB
SUB TextMC(Col AS BYTE, Row AS BYTE, Ink AS BYTE, Bg AS BYTE, Double AS BYTE, Text AS STRING * 40, RomCharSet AS BYTE) SHARED STATIC OVERLOAD
CALL TextMC(Col, Row, Ink, Bg, Double, Text, CWORD(RomCharSet))
END SUB
SUB TextMC(Col AS BYTE, Row AS BYTE, Ink AS BYTE, Bg AS BYTE, Double AS BYTE, Text AS STRING * 40, CharMemAddr AS WORD) SHARED STATIC OVERLOAD
' BITMAP_BASE: ZP_W0
' FONT_BASE: ZP_W1
' TEXT_POS: ZP_B0
' FONT_POS: ZP_B1
' FONT_BYTE: ZP_B2
' SCREEN_BYTE: ZP_B3
' BG_BYTE: ZP_B4
' FG_BYTE: ZP_B5
ASM
lda {CharMemAddr}+1
bne _mc_text_ram
lda {CharMemAddr}
cmp #2
bcs _mc_text_ram
_mc_text_rom
sei ; access ROM characters
lda #%00110001
sta 1
ldx #$d8
lda {CharMemAddr}
bne _mc_text_rom1
ldx #$d0
_mc_text_rom1
stx {CharMemAddr}+1
lda #0
sta {CharMemAddr}
jmp _mc_text_init
_mc_text_ram
OPEN_BANK3
_mc_text_init
;init color patterns
ldx {Bg}
lda {_mc_pattern},x
sta {ZP_B4}
ldx {Ink}
lda {_mc_pattern},x
sta {ZP_B5}
;init bitmap pointer
lda {Row}
asl
asl
eor {_dbuf_nr}
eor {_dbuf_on}
tay
lda {_bitmap_y_tbl},y
sta {ZP_W0}
lda {_bitmap_y_tbl}+1,y
sta {ZP_W0}+1
lda {Col}
asl
asl
asl
bcc mc_text_add_col_to_base
inc {ZP_W0}+1
clc
mc_text_add_col_to_base
adc {ZP_W0}
sta {ZP_W0}
bcc _mc_text_init_text_pointer
inc {ZP_W0}+1
_mc_text_init_text_pointer
;init text pointer
lda #0
sta {ZP_B0}
mc_text_loop_text
ldy {ZP_B0}
cpy {Text}
bne mc_text_loop_read_char
jmp _mc_text_end
mc_text_loop_read_char
iny
sty {ZP_B0}
;petscii to screen code
lda {Text},y
ldx #$5e
cmp #255
beq _mc_text_init_font_base
lsr
lsr
lsr
lsr
lsr
tax
clc
lda {_petscii_to_screencode},x
adc {Text},y
tax
_mc_text_init_font_base
lda #0
sta {ZP_W1}+1
txa
asl
rol {ZP_W1}+1
asl
rol {ZP_W1}+1
asl
rol {ZP_W1}+1
adc {CharMemAddr}
sta {ZP_W1}
lda {ZP_W1}+1
adc {CharMemAddr}+1
sta {ZP_W1}+1
;init font loop
ldy #7
mc_text_font_loop
;choose foreground
ldx {Ink}
bpl _mc_text_font_loop_left_bg
lda ({ZP_W0}),y
sta {ZP_B5}
_mc_text_font_loop_left_bg
;choose background
ldx {Bg}
bpl _mc_text_char_sx_or_dx
lda ({ZP_W0}),y
sta {ZP_B4}
_mc_text_char_sx_or_dx
lda {Double}
bne _mc_text_font_loop_left_nible
_mc_text_char_single
lda ({ZP_W1}),y
tax
and #%01100000
beq _mc_text_char_shrink0
lda #%00110000
_mc_text_char_shrink0
sta {ZP_B2}
txa
and #%00011000
beq _mc_text_char_shrink1
lda #%00001100
_mc_text_char_shrink1
ora {ZP_B2}
sta {ZP_B2}
txa
and #%00000110
beq _mc_text_char_shrink2
lda #%00000011
_mc_text_char_shrink2
ora {ZP_B2}
sta {ZP_B2}
eor #$ff
and {ZP_B4}
sta {ZP_B3}
lda {ZP_B5}
and {ZP_B2}
ora {ZP_B3}
sta ({ZP_W0}),y
dey
bpl mc_text_font_loop
;next char
clc
lda {ZP_W0}
adc #8
sta {ZP_W0}
bcc mc_text_char_next
inc {ZP_W0}+1
mc_text_char_next
jmp mc_text_loop_text
_mc_text_font_loop_left_nible
;lda ({ZP_W0}),y
;process left nible
lda ({ZP_W1}),y
lsr
lsr
lsr
lsr
tax
lda {_nible_to_byte},x
sta {ZP_B2}
eor #$ff
and {ZP_B4}
sta {ZP_B3}
lda {ZP_B5}
and {ZP_B2}
ora {ZP_B3}
sta ({ZP_W0}),y
;process right nible
lda ({ZP_W1}),y
and #%00001111
tax
lda {_nible_to_byte},x
sta {ZP_B2}
tya
eor #%00001000
tay
;choose foreground
ldx {Ink}
bpl _mc_text_font_loop_right_bg
lda ({ZP_W0}),y
sta {ZP_B5}
_mc_text_font_loop_right_bg
;choose background
ldx {Bg}
bpl _mc_text_font_loop_store_right_nible
lda ({ZP_W0}),y
sta {ZP_B4}
_mc_text_font_loop_store_right_nible
lda {ZP_B2}
eor #$ff
and {ZP_B4}
sta {ZP_B3}
lda {ZP_B5}
and {ZP_B2}
ora {ZP_B3}
sta ({ZP_W0}),y
tya
eor #%00001000
tay
dey
bmi _mc_text_char_double_next
jmp mc_text_font_loop
_mc_text_char_double_next
;next char
clc
lda {ZP_W0}
adc #16
sta {ZP_W0}
bcc _mc_text_next_char
inc {ZP_W0}+1
_mc_text_next_char
jmp mc_text_loop_text
_mc_text_end
lda #%00110110 ; Disable ROM characters (or bank3 access)
sta 1
cli
END ASM
END SUB
SUB Text(Col AS BYTE, Row AS BYTE, Mode AS BYTE, BgMode AS BYTE, Double AS BYTE, Text AS STRING * 40, RomCharSet AS BYTE) SHARED STATIC OVERLOAD
CALL Text(Col, Row, Mode, BgMode, Double, Text, CWORD(RomCharSet))
END SUB
SUB Text(Col AS BYTE, Row AS BYTE, Mode AS BYTE, BgMode AS BYTE, Double AS BYTE, Text AS STRING * 40, CharMemAddr AS WORD) SHARED STATIC OVERLOAD
' BITMAP_BASE: ZP_W0
' FONT_BASE: ZP_W1
' TEXT_POS: ZP_B0
' FONT_POS: ZP_B1
' FONT_BYTE: ZP_B2
' SCREEN_BYTE: ZP_B3
' BG_BYTE: ZP_B4
' FG_BYTE: ZP_B5
ASM
lda {CharMemAddr}+1
bne _text_ram
lda {CharMemAddr}
cmp #2
bcs _text_ram
_text_rom
sei ; access ROM characters
lda #%00110001
sta 1
ldx #$d8
lda {CharMemAddr}
bne _text_rom1
ldx #$d0
_text_rom1
stx {CharMemAddr}+1
lda #0
sta {CharMemAddr}
jmp _text_init
_text_ram
OPEN_BANK3
_text_init
;init bitmap pointer
lda {Row}
asl
asl
eor {_dbuf_nr}
eor {_dbuf_on}
tay
lda {_bitmap_y_tbl},y
sta {ZP_W0}
lda {_bitmap_y_tbl}+1,y
sta {ZP_W0}+1
lda {Col}
asl
asl
asl
bcc text_add_col_to_base
inc {ZP_W0}+1
clc
text_add_col_to_base
adc {ZP_W0}
sta {ZP_W0}
bcc _text_init_text_pointer
inc {ZP_W0}+1
_text_init_text_pointer
;init text pointer
lda #0
sta {ZP_B0}
text_loop_text
ldy {ZP_B0}
cpy {Text}
bne text_loop_read_char
jmp text_end
text_loop_read_char
iny
sty {ZP_B0}
;petscii to screen code
lda {Text},y
ldx #$5e
cmp #255
beq _text_init_font_base
lsr
lsr
lsr
lsr
lsr
tax
clc
lda {_petscii_to_screencode},x
adc {Text},y
tax
_text_init_font_base
lda #0
sta {ZP_W1}+1
txa
asl
rol {ZP_W1}+1
asl
rol {ZP_W1}+1
asl
rol {ZP_W1}+1
adc {CharMemAddr}
sta {ZP_W1}
lda {ZP_W1}+1
adc {CharMemAddr}+1
sta {ZP_W1}+1
;init font loop
ldy #7
text_font_loop
lda {Double}
bne _text_char_loop_double
_text_char_single
lda ({ZP_W1}),y
sta {ZP_B2}
lda {Mode}
jsr _text_pen_and_paper
sta {ZP_B5}
lda {ZP_B2}
eor #$ff
sta {ZP_B2}
lda {BgMode}
jsr _text_pen_and_paper
_text_char_single_combine
ora {ZP_B5}
sta ({ZP_W0}),y
dey
bpl text_font_loop
;next char
clc
lda {ZP_W0}
adc #8
sta {ZP_W0}
bcc text_char_next
inc {ZP_W0}+1
text_char_next
jmp text_loop_text
_text_char_loop_double
;lda ({ZP_W0}),y
;process left nible
lda ({ZP_W1}),y
lsr
lsr
lsr
lsr
tax
lda {_nible_to_byte},x
sta {ZP_B2}
_text_char_left
jsr _text_double_pen_and_paper
_text_char_left_combine
ora {ZP_B5}
sta ({ZP_W0}),y
_text_char_right
lda ({ZP_W1}),y
and #%00001111
tax
lda {_nible_to_byte},x
sta {ZP_B2}
tya
eor #%00001000
tay
jsr _text_double_pen_and_paper
_text_char_right_combine
ora {ZP_B5}
sta ({ZP_W0}),y
tya
eor #%00001000
tay
dey
bmi text_char_double_next
jmp text_font_loop
text_char_double_next
;next char
clc
lda {ZP_W0}
adc #16
sta {ZP_W0}
bcc text_next_char
inc {ZP_W0}+1
text_next_char
jmp text_loop_text
_text_double_pen_and_paper
lda {Mode}
jsr _text_pen_and_paper
sta {ZP_B5}
lda {ZP_B2}
eor #$ff
sta {ZP_B2}
lda {BgMode}
_text_pen_and_paper
beq _text_pen_and_paper_clr
bpl _text_pen_and_paper_set
_text_char_single_transparent
lda {ZP_B2}
and ({ZP_W0}),y
.byte $2c
_text_pen_and_paper_clr
lda #0
.byte $2c
_text_pen_and_paper_set
lda {ZP_B2}
rts
text_end
lda #%00110110 ; Disable ROM characters (or bank3 access)
sta 1
cli
END ASM
END SUB
SUB CopyCharROM(CharSet AS BYTE, DestAddr AS WORD) SHARED STATIC
' TEMP = ZP_B0
ASM
sei ; access ROM characters
lda #%00110001
sta 1
END ASM
IF CharSet THEN
MEMCPY $d800, DestAddr, 2048
ELSE
MEMCPY $d000, DestAddr, 2048
END IF
ASM
lda #%00110110 ; Disable ROM characters
sta 1
cli
END ASM
END SUB
SUB SetColorInRect(x0 AS BYTE, y0 AS BYTE, x1 AS BYTE, y1 AS BYTE, Ink AS BYTE, ColorId AS BYTE) SHARED STATIC
ASM
lda {x1}
cmp {x0}
bcs _setcolorinrect_sorty
ldx {x0}
stx {x1}
sta {x0}
_setcolorinrect_sorty
lda {y1}
cmp {y0}
bcs _setcolorinrect_init
ldx {y0}
stx {y1}
sta {y0}
_setcolorinrect_init
lda {ColorId}
sta {ZP_B2}
ldy {Ink}
lda $d016
and #%00010000
bne *+3
iny
cpy #3
beq _set_color_mc_3
OPEN_BANK3
lda {y0}
asl
asl
eor {_dbuf_nr}
eor {_dbuf_on}
tax
lda {_screen_y_tbl}+1,x
sta {ZP_W0}+1
lda {_screen_y_tbl},x
sta {ZP_W0}
cpy #2
beq _set_color_mc_2
_set_color_mc_1
lda #%00001111
sta {ZP_B3}
lda {ZP_B2}
asl
asl
asl
asl
sta {ZP_B2}
jmp _set_color_init_loops
_set_color_mc_2
lda #%11110000
sta {ZP_B3}
jmp _set_color_init_loops
_set_color_mc_3
lda #0
sta {ZP_B3}
ldx {y0}
lda {_color_y_tbl_lo},x
sta {ZP_W0}
lda {_color_y_tbl_hi},x
sta {ZP_W0}+1
_set_color_init_loops
sec
lda {y1}
sbc {y0}
tax
_set_color_y_loop
ldy {x0}
_set_color_x_loop
lda ({ZP_W0}),y
and {ZP_B3}
ora {ZP_B2}
sta ({ZP_W0}),y
iny
cpy {x1}
bcc _set_color_x_loop
beq _set_color_x_loop
clc
lda #40
adc {ZP_W0}
sta {ZP_W0}
bcc *+4
inc {ZP_W0}+1
dex
bpl _set_color_y_loop
CLOSE_BANK3
END ASM
END SUB
SUB FillColors(Color0 AS BYTE, Color1 AS BYTE) SHARED STATIC
ASM
lda {Color1}
asl
asl
asl
asl
ora {Color0}
sta {ZP_B1}
END ASM
CALL FillScreenMemory(ZP_B1)
END SUB
SUB FillColorsMC(Color0 AS BYTE, Color1 AS BYTE, Color2 AS BYTE, Color3 AS BYTE) SHARED STATIC
BACKGROUND Color0
CALL FillColors(Color2, Color1)
CALL FillColorMemory(Color3)
END SUB
SUB FillColorMemory(Value AS BYTE) SHARED STATIC
MEMSET $d800, 1000, Value
END SUB
SUB FillScreenMemory(Value AS BYTE) SHARED STATIC
ASM
lda {_dbuf_nr}
eor {_dbuf_on}
tax
lda {_screen_y_tbl}+1,x
sta {ZP_W0}+1
lda {_screen_y_tbl},x
sta {ZP_W0}
OPEN_BANK3
END ASM
MEMSET ZP_W0, 1000, Value
ASM
CLOSE_BANK3
END ASM
END SUB
SUB ResetScreen() SHARED STATIC
CALL DoubleBufferOff()
CALL SetVideoBank(0)
CALL SetScreenMemory(1)
CALL FillScreenMemory(32)
CALL SetCharacterMemory(2)
CALL SetGraphicsMode(STANDARD_CHARACTER_MODE)
CALL FillColorMemory(COLOR_LIGHTBLUE)
SCREEN 1
BACKGROUND COLOR_BLUE
BORDER COLOR_LIGHTBLUE
END SUB
SUB SetGraphicsMode(Mode AS BYTE) SHARED STATIC
' TEMP = ZP_B0
ASM
lda {Mode}
and #%01100000
sta {ZP_B0}
lda $d011