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-rw-r--r--engines/scumm/akos.cpp88
-rw-r--r--engines/scumm/akos.h35
2 files changed, 63 insertions, 60 deletions
diff --git a/engines/scumm/akos.cpp b/engines/scumm/akos.cpp
index faddeb4bba..b29bacc9c6 100644
--- a/engines/scumm/akos.cpp
+++ b/engines/scumm/akos.cpp
@@ -48,8 +48,8 @@ struct AkosHeader {
};
struct AkosOffset {
- uint32 akcd;
- uint16 akci;
+ uint32 akcd; // offset into the akcd data
+ uint16 akci; // offset into the akci data
};
#include "common/pack-end.h" // END STRUCT PACKING
@@ -300,30 +300,30 @@ void AkosRenderer::setPalette(byte *new_palette) {
if (_vm->_game.heversion >= 99 && _paletteNum) {
for (i = 0; i < size; i++)
- palette[i] = (byte)_vm->_hePalettes[_paletteNum * 1024 + 768 + akpl[i]];
+ _palette[i] = (byte)_vm->_hePalettes[_paletteNum * 1024 + 768 + akpl[i]];
} else {
for (i = 0; i < size; i++) {
- palette[i] = new_palette[i] != 0xFF ? new_palette[i] : akpl[i];
+ _palette[i] = new_palette[i] != 0xFF ? new_palette[i] : akpl[i];
}
}
if (_vm->_game.heversion == 70) {
for (i = 0; i < size; i++)
- palette[i] = _vm->_HEV7ActorPalette[palette[i]];
+ _palette[i] = _vm->_HEV7ActorPalette[_palette[i]];
}
if (size == 256) {
byte color = new_palette[0];
if (color == 255) {
- palette[0] = color;
+ _palette[0] = color;
} else {
- useBompPalette = true;
+ _useBompPalette = true;
}
}
}
void AkosRenderer::setCostume(int costume, int shadow) {
- akos = _vm->getResourceAddress(rtCostume, costume);
+ const byte *akos = _vm->getResourceAddress(rtCostume, costume);
assert(akos);
akhd = (const AkosHeader *) _vm->findResourceData(MKID_BE('AKHD'), akos);
@@ -332,7 +332,7 @@ void AkosRenderer::setCostume(int costume, int shadow) {
aksq = _vm->findResourceData(MKID_BE('AKSQ'), akos);
akcd = _vm->findResourceData(MKID_BE('AKCD'), akos);
akpl = _vm->findResourceData(MKID_BE('AKPL'), akos);
- codec = READ_LE_UINT16(&akhd->codec);
+ _codec = READ_LE_UINT16(&akhd->codec);
akct = _vm->findResourceData(MKID_BE('AKCT'), akos);
xmap = 0;
@@ -420,7 +420,7 @@ byte AkosRenderer::drawLimb(const Actor *a, int limb) {
_xmove += (int16)READ_LE_UINT16(&costumeInfo->move_x);
_ymove -= (int16)READ_LE_UINT16(&costumeInfo->move_y);
- switch (codec) {
+ switch (_codec) {
case 1:
result |= codec1(xmoveCur, ymoveCur);
break;
@@ -431,7 +431,7 @@ byte AkosRenderer::drawLimb(const Actor *a, int limb) {
result |= codec16(xmoveCur, ymoveCur);
break;
default:
- error("akos_drawLimb: invalid codec %d", codec);
+ error("akos_drawLimb: invalid _codec %d", _codec);
}
} else {
if (code == AKC_ComplexChan2) {
@@ -503,7 +503,7 @@ byte AkosRenderer::drawLimb(const Actor *a, int limb) {
_shadow_mode = 3;
}
- switch (codec) {
+ switch (_codec) {
case 1:
result |= codec1(xmoveCur, ymoveCur);
break;
@@ -517,7 +517,7 @@ byte AkosRenderer::drawLimb(const Actor *a, int limb) {
result |= codec32(xmoveCur, ymoveCur);
break;
default:
- error("akos_drawLimb: invalid codec %d", codec);
+ error("akos_drawLimb: invalid _codec %d", _codec);
}
}
}
@@ -567,7 +567,7 @@ void AkosRenderer::codec1_genericDecode(Codec1 &v1) {
masked = (y < v1.boundsRect.top || y >= v1.boundsRect.bottom) || (v1.x < 0 || v1.x >= v1.boundsRect.right) || (*mask & maskbit);
if (color && !masked && !skip_column) {
- pcolor = palette[color];
+ pcolor = _palette[color];
if (_shadow_mode == 1) {
if (pcolor == 13)
pcolor = _shadow_table[*dst];
@@ -1046,35 +1046,35 @@ byte AkosRenderer::codec5(int xmoveCur, int ymoveCur) {
bdd.shadowMode = _shadow_mode;
bdd.shadowPalette = _vm->_shadowPalette;
- bdd.actorPalette = useBompPalette ? palette : 0;
+ bdd.actorPalette = _useBompPalette ? _palette : 0;
bdd.mirror = !_mirror;
drawBomp(bdd);
- useBompPalette = false;
+ _useBompPalette = false;
return 0;
}
void AkosRenderer::akos16SetupBitReader(const byte *src) {
- akos16.unk5 = 0;
- akos16.numbits = 16;
- akos16.mask = (1 << *src) - 1;
- akos16.shift = *(src);
- akos16.color = *(src + 1);
- akos16.bits = (*(src + 2) | *(src + 3) << 8);
- akos16.dataptr = src + 4;
+ _akos16.repeatMode = false;
+ _akos16.numbits = 16;
+ _akos16.mask = (1 << *src) - 1;
+ _akos16.shift = *(src);
+ _akos16.color = *(src + 1);
+ _akos16.bits = (*(src + 2) | *(src + 3) << 8);
+ _akos16.dataptr = src + 4;
}
#define AKOS16_FILL_BITS() \
- if (akos16.numbits <= 8) { \
- akos16.bits |= (*akos16.dataptr++) << akos16.numbits; \
- akos16.numbits += 8; \
+ if (_akos16.numbits <= 8) { \
+ _akos16.bits |= (*_akos16.dataptr++) << _akos16.numbits; \
+ _akos16.numbits += 8; \
}
#define AKOS16_EAT_BITS(n) \
- akos16.numbits -= (n); \
- akos16.bits >>= (n);
+ _akos16.numbits -= (n); \
+ _akos16.bits >>= (n);
void AkosRenderer::akos16SkipData(int32 numbytes) {
@@ -1086,39 +1086,41 @@ void AkosRenderer::akos16DecodeLine(byte *buf, int32 numbytes, int32 dir) {
while (numbytes != 0) {
if (buf) {
- *buf = akos16.color;
+ *buf = _akos16.color;
buf += dir;
}
- if (akos16.unk5 == 0) {
+ if (!_akos16.repeatMode) {
AKOS16_FILL_BITS()
- bits = akos16.bits & 3;
+ bits = _akos16.bits & 3;
if (bits & 1) {
AKOS16_EAT_BITS(2)
if (bits & 2) {
- tmp_bits = akos16.bits & 7;
+ tmp_bits = _akos16.bits & 7;
AKOS16_EAT_BITS(3)
if (tmp_bits != 4) {
- akos16.color += (tmp_bits - 4);
+ // A color change
+ _akos16.color += (tmp_bits - 4);
} else {
- akos16.unk5 = 1;
+ // Color does not change, but rather identical pixels get repeated
+ _akos16.repeatMode = true;
AKOS16_FILL_BITS()
- akos16.unk6 = (akos16.bits & 0xff) - 1;
+ _akos16.repeatCount = (_akos16.bits & 0xff) - 1;
AKOS16_EAT_BITS(8)
AKOS16_FILL_BITS()
}
} else {
AKOS16_FILL_BITS()
- akos16.color = ((byte)akos16.bits) & akos16.mask;
- AKOS16_EAT_BITS(akos16.shift)
+ _akos16.color = ((byte)_akos16.bits) & _akos16.mask;
+ AKOS16_EAT_BITS(_akos16.shift)
AKOS16_FILL_BITS()
}
} else {
AKOS16_EAT_BITS(1);
}
} else {
- if (--akos16.unk6 == 0) {
- akos16.unk5 = 0;
+ if (--_akos16.repeatCount == 0) {
+ _akos16.repeatMode = false;
}
}
numbytes--;
@@ -1127,7 +1129,7 @@ void AkosRenderer::akos16DecodeLine(byte *buf, int32 numbytes, int32 dir) {
void AkosRenderer::akos16Decompress(byte *dest, int32 pitch, const byte *src, int32 t_width, int32 t_height, int32 dir,
int32 numskip_before, int32 numskip_after, byte transparency, int maskLeft, int maskTop, int zBuf) {
- byte *tmp_buf = akos16.buffer;
+ byte *tmp_buf = _akos16.buffer;
int maskpitch;
byte *maskptr;
const byte maskbit = revBitMask(maskLeft & 7);
@@ -1151,9 +1153,9 @@ void AkosRenderer::akos16Decompress(byte *dest, int32 pitch, const byte *src, in
assert(t_width > 0);
while (t_height--) {
akos16DecodeLine(tmp_buf, t_width, dir);
- bompApplyMask(akos16.buffer, maskptr, maskbit, t_width, transparency);
+ bompApplyMask(_akos16.buffer, maskptr, maskbit, t_width, transparency);
bool HE7Check = (_vm->_game.heversion == 70);
- bompApplyShadow(_shadow_mode, _shadow_table, akos16.buffer, dest, t_width, transparency, HE7Check);
+ bompApplyShadow(_shadow_mode, _shadow_table, _akos16.buffer, dest, t_width, transparency, HE7Check);
if (numskip_after != 0) {
akos16SkipData(numskip_after);
@@ -1167,7 +1169,7 @@ byte AkosRenderer::codec16(int xmoveCur, int ymoveCur) {
Common::Rect clip;
int32 minx, miny, maxw, maxh;
int32 skip_x, skip_y, cur_x, cur_y;
- byte transparency = (_vm->_game.heversion >= 61) ? palette[0] : 255;
+ byte transparency = (_vm->_game.heversion >= 61) ? _palette[0] : 255;
if (_actorHitMode) {
error("codec16: _actorHitMode not yet implemented");
diff --git a/engines/scumm/akos.h b/engines/scumm/akos.h
index e0a56fd70e..9c9c608a64 100644
--- a/engines/scumm/akos.h
+++ b/engines/scumm/akos.h
@@ -55,25 +55,27 @@ protected:
class AkosRenderer : public BaseCostumeRenderer {
protected:
- uint16 codec;
+ uint16 _codec;
- // actor palette
- byte palette[256];
- bool useBompPalette;
+ // actor _palette
+ byte _palette[256];
+ bool _useBompPalette;
// pointer to various parts of the costume resource
- const byte *akos;
- const AkosHeader *akhd;
+ const AkosHeader *akhd; // header
- const byte *akpl, *akci, *aksq;
- const AkosOffset *akof;
- const byte *akcd;
- const byte *akct;
- const uint8 *xmap;
+ const byte *akpl; // palette data
+ const byte *akci; // CostumeInfo table
+ const byte *aksq; // command sequence
+ const AkosOffset *akof; // offsets into ci and cd table
+ const byte *akcd; // costume data (contains the data for the codecs)
+
+ const byte *akct; // HE specific: condition table
+ const uint8 *xmap; // HE specific: shadow color table ?!?
struct {
- byte unk5;
- int unk6;
+ bool repeatMode;
+ int repeatCount;
byte mask;
byte color;
byte shift;
@@ -81,12 +83,11 @@ protected:
byte numbits;
const byte *dataptr;
byte buffer[336];
- } akos16;
+ } _akos16;
public:
AkosRenderer(ScummEngine *scumm) : BaseCostumeRenderer(scumm) {
- useBompPalette = false;
- akos = 0;
+ _useBompPalette = false;
akhd = 0;
akpl = 0;
akci = 0;
@@ -102,7 +103,7 @@ public:
int16 _actorHitX, _actorHitY;
bool _actorHitResult;
- void setPalette(byte *palette);
+ void setPalette(byte *_palette);
void setFacing(const Actor *a);
void setCostume(int costume, int shadow);
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-12 16:51:44 +0000