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
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program 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 2
* of the License, or (at your option) any later version.
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "common/scummsys.h"
#include "engines/util.h"
#include "graphics/palette.h"
#include "mads/mads.h"
#include "mads/msurface.h"
#include "mads/staticres.h"
namespace MADS {
#define VGA_COLOR_TRANS(x) ((x) * 255 / 63)
void RGB6::load(Common::SeekableReadStream *f) {
r = VGA_COLOR_TRANS(f->readByte());
g = VGA_COLOR_TRANS(f->readByte());
b = VGA_COLOR_TRANS(f->readByte());
_palIndex = f->readByte();
_u2 = f->readByte();
_flags = f->readByte();
}
/*------------------------------------------------------------------------*/
PaletteUsage::PaletteUsage(MADSEngine *vm) {
_vm = vm;
_data = nullptr;
}
void PaletteUsage::load(Common::Array<UsageEntry> *data) {
_data = data;
}
void PaletteUsage::getKeyEntries(Common::Array<RGB6> &palette) {
_data->clear();
for (uint i = 0; i < palette.size(); ++i) {
byte *uPtr = &palette[i]._flags;
if ((*uPtr & 0x10) && _data->size() < 3) {
_data->push_back(UsageEntry(i));
}
}
}
static bool sortHelper(const PaletteUsage::UsageEntry &ue1, const PaletteUsage::UsageEntry &ue2) {
return ue1._sortValue < ue2._sortValue;
}
void PaletteUsage::prioritize(Common::Array<RGB6> &palette) {
for (uint i = 0; i < _data->size(); ++i) {
RGB6 &palEntry = palette[(*_data)[i]._palIndex];
(*_data)[i]._sortValue = _vm->_palette->rgbMerge(palEntry);
}
Common::sort(_data->begin(), _data->end(), sortHelper);
}
static bool rangeSorter(const PaletteUsage::UsageRange &ur1, const PaletteUsage::UsageRange &ur2) {
return ur1._v2 < ur2._v2;
}
int PaletteUsage::process(Common::Array<RGB6> &palette, uint flags) {
int palLow;
int palHigh = (flags & 0x800) ? 0x100 : 0xFC;
int palIdx;
PaletteUsage tempUsage(_vm);
Common::Array<UsageEntry> tempUsageData;
tempUsage.load(&tempUsageData);
if (flags & 0x4000) {
palLow = 0;
palIdx = palHigh;
} else {
palLow = _vm->_palette->_lowRange;
if ((PALETTE_COUNT - _vm->_palette->_highRange) > palHigh) {
palIdx = palHigh;
} else {
palIdx = PALETTE_COUNT - _vm->_palette->_highRange;
}
}
int rgbIndex = _vm->_palette->_rgbList.scan();
uint32 rgbMask = 1 << rgbIndex;
bool noUsageFlag = flags & 0x8000;
bool hasUsage = _data != nullptr;
bool flag1 = false;
if (hasUsage) {
if (noUsageFlag || _data->size() == 0)
hasUsage = false;
if (noUsageFlag && _data->size() > 0)
flag1 = true;
}
if (hasUsage) {
tempUsage.getKeyEntries(palette);
tempUsage.prioritize(palette);
}
int freeIndex;
int palCount = getGamePalFreeIndex(&freeIndex);
Common::Array<UsageRange> palRange;
for (uint palIndex = 0; palIndex < palette.size(); ++palIndex) {
byte pal2 = palIndex;
byte pal1 = 0;
if (!(palette[palIndex]._flags & 0x80)) {
pal1 = 0x40;
}
if (palette[palIndex]._flags & 0x60) {
pal1 |= 0x20;
}
palRange.push_back(UsageRange(pal1, pal2));
}
Common::sort(palRange.begin(), palRange.end(), rangeSorter);
int var3A = (flags & 0x4000) ? 0xffff : 0xfffe;
for (uint palIndex = 0; palIndex < palette.size(); ++palIndex) {
bool changed = false;
int newPalIndex = 0xFF;
int v1 = palRange[palIndex]._v2;
if (palette[v1]._flags & 8) {
changed = true;
newPalIndex = 0xFD;
}
if (hasUsage && palette[v1]._flags & 0x10) {
for (uint usageIndex = 0; usageIndex < tempUsage._data->size() && !changed; ++usageIndex) {
if ((*tempUsage._data)[usageIndex]._palIndex == palIndex) {
changed = true;
int dataIndex = MIN(usageIndex, _data->size() - 1);
newPalIndex = (*_data)[dataIndex]._palIndex;
}
}
}
if (flag1 && palette[palIndex]._flags & 0x10) {
for (uint usageIndex = 0; usageIndex < _data->size() && !changed; ++usageIndex) {
if ((*_data)[usageIndex]._palIndex == palIndex) {
changed = true;
newPalIndex = 0xF0 + usageIndex;
// Copy data into the high end of the main palette
RGB6 &pSrc = palette[palIndex];
byte *pDest = &_vm->_palette->_mainPalette[newPalIndex * 3];
pDest[0] = pSrc.r;
pDest[1] = pSrc.g;
pDest[2] = pSrc.b;
}
}
}
if (!changed && !noUsageFlag) {
int bestHash = (palette[palIndex]._flags & 0x20) ||
(((flags & 0x2000) || (palette[palIndex]._flags & 0x40)) &&
((flags & 0x1000) || (palCount == 0))) ? 0x7fff : 1;
int var36 = (palette[palIndex]._flags & 0x80) ? 0 : 2;
for (int idx = palLow; idx < palIdx; ++idx) {
uint32 v = _vm->_palette->_palFlags[idx];
if ((v & var3A) && !(v & var36)) {
int hash;
if (bestHash > 1) {
hash = rgbFactor(&_vm->_palette->_mainPalette[idx * 3], palette[palIndex]);
} else if (_vm->_palette->_mainPalette[idx * 3] != palette[palIndex].r ||
_vm->_palette->_mainPalette[idx * 3 + 1] != palette[palIndex].g ||
_vm->_palette->_mainPalette[idx * 3 + 2] != palette[palIndex].b) {
hash = 1;
} else {
hash = 0;
}
if (bestHash > hash) {
changed = true;
newPalIndex = idx;
bestHash = hash;
}
}
}
}
if (!changed && (!(flags & 0x1000) || (!(palette[palIndex]._flags & 0x60) && !(flags & 0x2000)))) {
for (int idx = freeIndex; idx < palIdx && !changed; ++idx) {
if (!_vm->_palette->_palFlags[idx]) {
--palCount;
++freeIndex;
changed = true;
newPalIndex = idx;
RGB6 &pSrc = palette[palIndex];
byte *pDest = &_vm->_palette->_mainPalette[idx * 3];
pDest[0] = pSrc.r;
pDest[1] = pSrc.g;
pDest[2] = pSrc.b;
}
}
}
// TODO: Not sure if it's valid or not for changed flag to ever be false.
// In at least scene 318, when the doctor knocks you with the blackjack,
// the changed flag can be false
//assert(changed);
// CHECKME: When pressing on F1 in the first screen, newPalIndex is set to 0xFF at this point
// which is a valid value for the index. Maybe a better check would be "< 256" ?
//assert(newPalIndex != -1);
int var52 = (noUsageFlag && palette[palIndex]._u2) ? 2 : 0;
_vm->_palette->_palFlags[newPalIndex] |= var52 | rgbMask;
palette[palIndex]._palIndex = newPalIndex;
}
_vm->_palette->_rgbList[rgbIndex] = true;
return rgbIndex;
}
void PaletteUsage::transform(Common::Array<RGB6> &palette) {
if (!empty()) {
for (uint i = 0; i < _data->size(); ++i) {
int palIndex = (*_data)[i]._palIndex;
(*_data)[i]._palIndex = palette[palIndex]._palIndex;
}
}
}
void PaletteUsage::updateUsage(Common::Array<int> &usageList, int sceneUsageIndex) {
uint32 mask1 = 0xFFFFFFFF;
uint32 mask2 = 0;
for (uint idx = 0; idx < usageList.size(); ++idx) {
uint32 bitMask = 1 << usageList[idx];
mask1 ^= bitMask;
mask2 |= bitMask;
_vm->_palette->_rgbList[usageList[idx]] = false;
}
uint32 mask3 = 1 << sceneUsageIndex;
for (uint idx = 0; idx < PALETTE_COUNT; ++idx) {
uint32 mask = mask2 & _vm->_palette->_palFlags[idx];
if (mask) {
_vm->_palette->_palFlags[idx] = (_vm->_palette->_palFlags[idx] &
mask1) | mask3;
}
}
_vm->_palette->_rgbList[sceneUsageIndex] = true;
}
void PaletteUsage::resetPalFlags(int idx) {
if (idx >= 0 && idx < 32) {
uint32 rgbMask = ~(1 << idx);
uint32 *flagP = _vm->_palette->_palFlags;
for (int i = 0; i < 256; ++i, ++flagP) {
*flagP &= rgbMask;
if (*flagP == 2)
*flagP = 0;
}
_vm->_palette->_rgbList[idx] = false;
}
}
int PaletteUsage::getGamePalFreeIndex(int *palIndex) {
*palIndex = -1;
int count = 0;
for (int i = 0; i < PALETTE_COUNT; ++i) {
if (!_vm->_palette->_palFlags[i]) {
++count;
if (*palIndex < 0)
*palIndex = i;
}
}
return count;
}
int PaletteUsage::rgbFactor(byte *palEntry, RGB6 &pal6) {
int total = 0;
total += (palEntry[0] - pal6.r) * (palEntry[0] - pal6.r);
total += (palEntry[1] - pal6.g) * (palEntry[1] - pal6.g);
total += (palEntry[2] - pal6.b) * (palEntry[2] - pal6.b);
return total;
}
int PaletteUsage::checkRGB(const byte *rgb, int palStart, bool flag, int *palIndex) {
Palette &palette = *_vm->_palette;
bool match = false;
int result;
if (palStart >= 0) {
result = palStart;
} else {
result = -1;
for (int i = 0; i < palette._highRange; ++i) {
if (!palette._rgbList[i]) {
result = i;
break;
}
}
}
if (result >= 0) {
int mask = 1 << result;
byte *palP = &palette._mainPalette[0];
uint32 *flagsP = &palette._palFlags[0];
for (; flagsP < &palette._palFlags[PALETTE_COUNT]; ++flagsP, ++result) {
if ((!(*flagsP & 1) || flag) && !(*flagsP & 2)) {
if (!memcmp(palP, rgb, 3)) {
*flagsP |= mask;
if (palIndex)
*palIndex = result;
match = true;
break;
}
}
}
if (!match) {
palP = &palette._mainPalette[0];
flagsP = &palette._palFlags[0];
for (int i = 0; i < PALETTE_COUNT; ++i, palP += 3, ++flagsP) {
if (!*flagsP) {
Common::copy(rgb, rgb + 3, palP);
*flagsP |= mask;
if (palIndex)
*palIndex = i;
match = true;
break;
}
}
}
}
assert(match);
return result;
}
/*------------------------------------------------------------------------*/
void RGBList::clear() {
for (int i = 0; i < 32; i++)
_data[i] = false;
}
void RGBList::reset() {
for (int i = 2; i < 32; i++)
_data[i] = false;
}
int RGBList::scan() {
for (int i = 0; i < 32; ++i) {
if (!_data[i])
return i;
}
error("RGBList was full");
}
void RGBList::copy(RGBList &src) {
Common::copy(&src._data[0], &src._data[32], &_data[0]);
}
/*------------------------------------------------------------------------*/
Fader::Fader(MADSEngine *vm)
: _vm(vm) {
_colorFlags[0] = _colorFlags[1] = _colorFlags[2] = true;
_colorFlags[3] = false;
_colorValues[0] = _colorValues[1] = 0;
_colorValues[2] = _colorValues[3] = 0;
// TODO: It would be better if the fader routines could be refactored
// to work directly with 8-bit RGB values rather than 6-bit RGB values
Common::fill(&_rgb64Map[0], &_rgb64Map[PALETTE_COUNT], 0);
for (int i = 0; i < 64; ++i)
_rgb64Map[VGA_COLOR_TRANS(i)] = i;
byte v = 0;
for (int i = 0; i < PALETTE_COUNT; ++i) {
if (_rgb64Map[i])
v = _rgb64Map[i];
else
_rgb64Map[i] = v;
}
}
void Fader::setPalette(const byte *colors, uint start, uint num) {
g_system->getPaletteManager()->setPalette(colors, start, num);
}
void Fader::grabPalette(byte *colors, uint start, uint num) {
g_system->getPaletteManager()->grabPalette(colors, start, num);
}
void Fader::fadeOut(byte palette[PALETTE_SIZE], byte *paletteMap,
int baseColor, int numColors, int baseGrey, int numGreys,
int tickDelay, int steps) {
GreyEntry map[PALETTE_COUNT];
int intensity;
byte palIndex[PALETTE_COUNT][3];
int8 signs[PALETTE_COUNT][3];
mapToGreyRamp(palette, baseColor, numColors, baseGrey, numGreys, map);
for (int palCtr = baseColor; palCtr < (baseColor + numColors); ++palCtr) {
int index = palCtr - baseColor;
for (int colorCtr = 0; colorCtr < 3; ++colorCtr) {
if (_colorFlags[colorCtr]) {
int shiftSign = _colorValues[colorCtr];
if (shiftSign >= 0) {
intensity = map[index]._intensity << shiftSign;
} else {
intensity = map[index]._intensity >> ABS(shiftSign);
}
} else {
intensity = _colorValues[colorCtr];
}
int diff = intensity - _rgb64Map[palette[palCtr * 3 + colorCtr]];
palIndex[palCtr][colorCtr] = (byte)ABS(diff);
signs[palCtr][colorCtr] = (diff == 0) ? 0 : (diff < 0 ? -1 : 1);
}
}
for (int stepCtr = 0; stepCtr < steps; ++stepCtr) {
for (int palCtr = baseColor; palCtr < (baseColor + numColors); ++palCtr) {
int index = palCtr - baseColor;
for (int colorCtr = 0; colorCtr < 3; ++colorCtr) {
map[index]._accum[colorCtr] += palIndex[palCtr][colorCtr];
while (map[index]._accum[colorCtr] >= steps) {
map[index]._accum[colorCtr] -= steps;
byte rgb63 = _rgb64Map[palette[palCtr * 3 + colorCtr]] +
signs[palCtr][colorCtr];
palette[palCtr * 3 + colorCtr] = VGA_COLOR_TRANS(rgb63);
}
}
}
setFullPalette(palette);
_vm->_events->waitForNextFrame();
}
if (paletteMap != nullptr) {
for (int palCtr = 0; palCtr < numColors; palCtr++) {
paletteMap[palCtr] = map[palCtr]._mapColor;
}
}
}
void Fader::fadeIn(byte palette[PALETTE_SIZE], byte destPalette[PALETTE_SIZE],
int baseColor, int numColors, int baseGrey, int numGreys,
int tickDelay, int steps) {
GreyEntry map[PALETTE_COUNT];
byte tempPal[PALETTE_SIZE];;
int8 signs[PALETTE_COUNT][3];
byte palIndex[PALETTE_COUNT][3];
int intensity;
Common::copy(destPalette, destPalette + PALETTE_SIZE, tempPal);
mapToGreyRamp(tempPal, baseColor, numColors, baseGrey, numGreys, map);
for (int palCtr = baseColor; palCtr < (baseColor + numColors); ++palCtr) {
int index = palCtr - baseColor;
for (int colorCtr = 0; colorCtr < 3; ++colorCtr) {
if (_colorFlags[colorCtr]) {
int shiftSign = _colorValues[colorCtr];
if (shiftSign >= 0)
intensity = map[index]._intensity << shiftSign;
else
intensity = map[index]._intensity >> abs(shiftSign);
} else
intensity = _colorValues[colorCtr];
int diff = _rgb64Map[destPalette[palCtr * 3 + colorCtr]] - intensity;
palIndex[palCtr][colorCtr] = (byte)ABS(diff);
signs[palCtr][colorCtr] = (diff == 0) ? 0 : (diff < 0 ? -1 : 1);
map[index]._accum[colorCtr] = 0;
}
}
for (int stepCtr = 0; stepCtr < steps; ++stepCtr) {
for (int palCtr = baseColor; palCtr < (baseColor + numColors); ++palCtr) {
int index = palCtr - baseColor;
for (int colorCtr = 0; colorCtr < 3; ++colorCtr) {
map[index]._accum[colorCtr] += palIndex[palCtr][colorCtr];
while (map[index]._accum[colorCtr] >= steps) {
map[index]._accum[colorCtr] -= steps;
byte rgb63 = _rgb64Map[palette[palCtr * 3 + colorCtr]] +
signs[palCtr][colorCtr];
palette[palCtr * 3 + colorCtr] = VGA_COLOR_TRANS(rgb63);
}
}
}
setFullPalette(palette);
_vm->_events->waitForNextFrame();
}
}
void Fader::mapToGreyRamp(byte palette[PALETTE_SIZE], int baseColor, int numColors,
int baseGrey, int numGreys, GreyEntry *map) {
byte greyList[PALETTE_COUNT];
byte greyMapping[PALETTE_COUNT];
byte greyTable[64];
byte greyIntensity[64];
int intensity, shiftSign;
getGreyValues(palette, greyList, baseColor, numColors);
greyPopularity(greyList, greyTable, numColors);
for (int idx = 0; idx < numColors; ++idx) {
greyMapping[idx] = idx;
Common::fill(&map[idx]._accum[0], &map[idx]._accum[3], 0);
}
for (int idx = 0; idx < PALETTE_COUNT; ++idx) {
map[idx]._mapColor = (byte)idx;
}
// Sort the mapping lists
insertionSort(numColors, greyList, greyMapping);
// Initialize state variables
int greySum = 0;
int greyScan = 0;
int greyMark = 0;
int greyColors = 0;
int greyAccum = 0;
int firstColor = 0;
for (int greyCtr = 0; greyCtr < 64; ++greyCtr) {
for (int idx = 0; idx < greyTable[greyCtr]; ++idx) {
greySum += greyList[greyScan++];
++greyColors;
greyAccum += numGreys;
while (greyAccum >= numColors) {
greyAccum -= numColors;
if (greyColors > 0) {
greyIntensity[greyMark] = (byte)(greySum / greyColors);
}
for (int rescan = firstColor; rescan < greyScan; ++rescan) {
map[greyMapping[rescan]]._intensity = greyIntensity[greyMark];
map[greyMapping[rescan]]._mapColor = (byte)(greyMark + baseGrey);
}
firstColor = greyScan;
greySum = 0;
greyColors = 0;
++greyMark;
}
}
}
// Set the palette range of greyscale values to be used
byte *palP = &palette[baseGrey * 3];
for (int greys = 0; greys < numGreys; ++greys) {
for (int color = 0; color < 3; ++color) {
if (_colorFlags[color]) {
shiftSign = (byte)_colorValues[color];
if (shiftSign >= 0) {
intensity = greyIntensity[greys] << shiftSign;
} else {
intensity = greyIntensity[greys] >> abs(shiftSign);
}
} else {
intensity = _colorValues[color];
}
*palP++ = VGA_COLOR_TRANS(intensity);
}
}
}
void Fader::getGreyValues(const byte palette[PALETTE_SIZE],
byte greyList[PALETTE_COUNT], int baseColor, int numColors) {
const byte *palP = &palette[baseColor * 3];
for (int i = 0; i < numColors; ++i, palP += 3) {
int v = rgbMerge(palP[0], palP[1], palP[2]);
greyList[i] = v >> 7;
}
}
void Fader::greyPopularity(const byte greyList[PALETTE_COUNT],
byte greyTable[64], int numColors) {
Common::fill(&greyTable[0], &greyTable[64], 0);
for (int i = 0; i < numColors; ++i) {
int idx = greyList[i];
++greyTable[idx];
}
}
void Fader::insertionSort(int size, byte *id, byte *value) {
bool restartFlag;
int endIndex = size - 1;
do {
restartFlag = false;
if (endIndex <= 0)
break;
for (int arrIndex = 0; arrIndex < endIndex && !restartFlag; ++arrIndex) {
byte *idP = id + arrIndex;
byte *valueP = value + arrIndex;
// Check whether the next index is out of order with the one following it
if (*idP > *(idP + 1)) {
// Found an incorrect ordering
restartFlag = true;
// Save id/value at current index
byte savedId = *idP;
byte savedValue = *valueP;
int moveCount = size - arrIndex - 1;
if (moveCount > 0) {
Common::copy(idP + 1, idP + moveCount + 2, idP);
Common::copy(valueP + 1, valueP + moveCount + 2, valueP);
}
// Scan for insert spot
int idx = 0;
if (endIndex > 0) {
bool breakFlag = false;
for (; idx <= endIndex && !breakFlag; ++idx) {
breakFlag = savedId < id[idx];
}
}
// Set up an insert point for entry
moveCount = size - idx - 1;
if (moveCount > 0) {
Common::copy_backward(id + idx, id + idx + moveCount, id + idx + moveCount + 1);
Common::copy_backward(value + idx, value + idx + moveCount, value + idx + moveCount + 1);
}
// Set shifted values at the new position
id[idx] = savedId;
value[idx] = savedValue;
}
}
} while (restartFlag);
}
int Fader::rgbMerge(RGB6 &palEntry) {
return rgbMerge(palEntry.r, palEntry.g, palEntry.b);
}
int Fader::rgbMerge(byte r, byte g, byte b) {
return _rgb64Map[r] * 38 + _rgb64Map[g] * 76 + _rgb64Map[b] * 14;
}
/*------------------------------------------------------------------------*/
Palette::Palette(MADSEngine *vm) : Fader(vm), _paletteUsage(vm) {
_lockFl = false;
_lowRange = 0;
_highRange = 0;
Common::fill(&_mainPalette[0], &_mainPalette[PALETTE_SIZE], 0);
Common::fill(&_palFlags[0], &_palFlags[PALETTE_COUNT], 0);
}
void Palette::setEntry(byte palIndex, byte r, byte g, byte b) {
_mainPalette[palIndex * 3] = VGA_COLOR_TRANS(r);
_mainPalette[palIndex * 3 + 1] = VGA_COLOR_TRANS(g);
_mainPalette[palIndex * 3 + 2] = VGA_COLOR_TRANS(b);
setPalette((const byte *)&_mainPalette[palIndex * 3], palIndex, 1);
}
uint8 Palette::palIndexFromRgb(byte r, byte g, byte b, byte *paletteData) {
byte index = 0;
int32 minDist = 0x7fffffff;
byte palData[PALETTE_SIZE];
if (paletteData == NULL) {
g_system->getPaletteManager()->grabPalette(palData, 0, PALETTE_COUNT);
paletteData = &palData[0];
}
for (int palIndex = 0; palIndex < PALETTE_COUNT; ++palIndex) {
int Rdiff = r - paletteData[palIndex * 3];
int Gdiff = g - paletteData[palIndex * 3 + 1];
int Bdiff = b - paletteData[palIndex * 3 + 2];
if (Rdiff * Rdiff + Gdiff * Gdiff + Bdiff * Bdiff < minDist) {
minDist = Rdiff * Rdiff + Gdiff * Gdiff + Bdiff * Bdiff;
index = (uint8)palIndex;
}
}
return (uint8)index;
}
void Palette::setGradient(byte *palette, int start, int count, int rgbValue1, int rgbValue2) {
int rgbCurrent = rgbValue2;
int rgbDiff = -(rgbValue2 - rgbValue1);
if (count > 0) {
byte *pDest = palette + start * 3;
int endVal = count - 1;
int numLeft = count;
int rgbCtr = 0;
do {
pDest[0] = pDest[1] = pDest[2] = rgbCurrent;
if (numLeft > 1) {
rgbCtr += rgbDiff;
if (rgbCtr >= endVal) {
do {
++rgbCurrent;
rgbCtr += 1 - numLeft;
} while (rgbCtr >= endVal);
}
}
pDest += 3;
} while (--numLeft > 0);
}
}
void Palette::setSystemPalette() {
byte palData[4 * 3];
palData[0 * 3] = palData[0 * 3 + 1] = palData[0 * 3 + 2] = 0;
palData[1 * 3] = palData[1 * 3 + 1] = palData[1 * 3 + 2] = 0x54;
palData[2 * 3] = palData[2 * 3 + 1] = palData[2 * 3 + 2] = 0xb4;
palData[3 * 3] = palData[3 * 3 + 1] = palData[3 * 3 + 2] = 0xff;
setPalette(palData, 0, 4);
}
void Palette::resetGamePalette(int lowRange, int highRange) {
Common::fill((byte *)&_palFlags[0], (byte *)&_palFlags[PALETTE_COUNT], 0);
initVGAPalette(_mainPalette);
// Reserve the start of the palette for things like on-screen text
if (lowRange) {
Common::fill(&_palFlags[0], &_palFlags[lowRange], 1);
}
// Reserve the high end of the palette for dialog display
if (highRange) {
Common::fill(&_palFlags[256 - highRange], &_palFlags[256], 1);
}
_rgbList.clear();
_rgbList[0] = _rgbList[1] = true;
_lockFl = false;
_lowRange = lowRange;
_highRange = highRange;
}
void Palette::initPalette() {
uint32 palMask = 1;
if (_vm->_game->_player._spritesLoaded && _vm->_game->_player._numSprites) {
for (int idx = 0; idx < _vm->_game->_player._numSprites; ++idx) {
SpriteAsset *asset = _vm->_game->_scene._sprites[
_vm->_game->_player._spritesStart + idx];
uint32 mask = 1;
if (asset->_usageIndex)
mask <<= asset->_usageIndex;
palMask = mask;
}
}
for (int idx = 0; idx < PALETTE_COUNT; ++idx)
_palFlags[idx] = palMask;
_lockFl = false;
_rgbList.reset();
}
void Palette::initVGAPalette(byte *palette) {
byte *destP = palette;
for (int palIndex = 0; palIndex < 16; ++palIndex) {
for (int byteCtr = 2; byteCtr >= 0; --byteCtr)
*destP++ = ((DEFAULT_VGA_LOW_PALETTE[palIndex] >> (8 * byteCtr)) & 0xff) >> 2;
}
destP = &palette[0xF0 * 3];
for (int palIndex = 0; palIndex < 16; ++palIndex) {
for (int byteCtr = 2; byteCtr >= 0; --byteCtr)
*destP++ = ((DEFAULT_VGA_HIGH_PALETTE[palIndex] >> (8 * byteCtr)) & 0xff) >> 2;
}
}
void Palette::setLowRange() {
_mainPalette[0] = _mainPalette[1] = _mainPalette[2] = VGA_COLOR_TRANS(0);
_mainPalette[3] = _mainPalette[4] = _mainPalette[5] = VGA_COLOR_TRANS(0x15);
_mainPalette[6] = _mainPalette[7] = _mainPalette[8] = VGA_COLOR_TRANS(0x2A);
_mainPalette[9] = _mainPalette[10] = _mainPalette[11] = VGA_COLOR_TRANS(0x3F);
_vm->_palette->setPalette(_mainPalette, 0, 4);
}
void Palette::setColorFlags(byte r, byte g, byte b) {
_colorFlags[0] = r;
_colorFlags[1] = g;
_colorFlags[2] = b;
}
void Palette::setColorValues(byte r, byte g, byte b) {
_colorValues[0] = r;
_colorValues[1] = g;
_colorValues[2] = b;
}
void Palette::lock() {
if (_rgbList[31] && !_lockFl)
error("Palette Lock - Unexpected values");
_lockFl = true;
_rgbList[31] = true;
for (int i = 0; i < 256; i++) {
if (_palFlags[i])
_palFlags[i] |= 0x80000000;
}
}
void Palette::unlock() {
if (!_lockFl)
return;
for (int i = 0; i < 256; i++)
_palFlags[i] &= 0x7FFFFFFF;
_rgbList[31] = false;
_lockFl = false;
}
void Palette::refreshSceneColors() {
int val = 18;
if (_vm->_game->_scene._cyclingActive)
val += _vm->_game->_scene._totalCycleColors;
setPalette(_mainPalette + (val * 3), val, 256 - val);
}
int Palette::closestColor(const byte *matchColor, const byte *refPalette,
int listWrap, int count) {
int bestColor = 0;
int bestDifference = 0x7fff;
for (int idx = 0; idx < count; ++idx) {
// Figure out hash for color
int hash = 0;
for (int rgbIdx = 0; rgbIdx < 3; ++rgbIdx, ++refPalette) {
byte diff = *refPalette - matchColor[rgbIdx];
hash += (int)diff * (int)diff;
}
// If the given color is a closer match to our color, store the index
if (hash < bestDifference) {
bestDifference = hash;
bestColor = idx;
}
refPalette += listWrap - 3;
}
return bestColor;
}
} // End of namespace MADS
|