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SCUMM: INDY4 (DOS/Mac Jap): Implement accurate character shading

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This is taken from disasm.
This commit is contained in:
AndywinXp 2023-11-10 16:34:33 +01:00
parent f1a8595d6d
commit 73988683f2
3 changed files with 25 additions and 3 deletions
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23
engines/scumm/charset.cpp
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@ -739,16 +739,33 @@ void CharsetRendererPC::drawBits1(Graphics::Surface &dest, int x, int y, const b
int pitch = dest.pitch - width * dest.format.bytesPerPixel;
byte *dst2 = dst + dest.pitch;
bool isIndy4Jap = _vm->_game.id == GID_INDY4 && _vm->_language == Common::JA_JPN &&
(_vm->_game.platform == Common::kPlatformDOS || _vm->_game.platform == Common::kPlatformMacintosh);
if (isIndy4Jap) {
// Characters allow shadows only if this is the main virtual screen, and we are not drawing
// a message on a GUI banner. The main menu is fine though, and allows shadows as well.
bool canDrawShadow = _vm->findVirtScreen(_top)->number == kMainVirtScreen && !_vm->isMessageBannerActive();
enableShadow(canDrawShadow);
}
for (y = 0; y < height && y + drawTop < dest.h; y++) {
for (x = 0; x < width; x++) {
if ((x % 8) == 0)
bits = *src++;
if ((bits & revBitMask(x % 8)) && y + drawTop >= 0) {
if (_enableShadow) {
if (_shadowType == kNormalShadowType)
dst[1] = dst2[0] = dst2[1] = _shadowColor;
else if (_shadowType == kHorizontalShadowType)
if (_shadowType == kNormalShadowType) {
dst[1] = dst2[1] = _shadowColor;
// Mac and DOS/V versions of Japanese INDY4 don't
// draw a shadow pixel below the first pixel.
// Verified from disasm.
if (!isIndy4Jap)
dst2[0] = _shadowColor;
} else if (_shadowType == kHorizontalShadowType) {
dst[1] = _shadowColor;
}
}
dst[0] = col;
} else if (!(bits & revBitMask(x % 8)) && (y < height - 1) &&

4
engines/scumm/scumm.cpp
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@ -3682,6 +3682,10 @@ bool ScummEngine::isUsingOriginalGUI() {
return _useOriginalGUI;
}
bool ScummEngine::isMessageBannerActive() {
return _messageBannerActive;
}
void ScummEngine::runBootscript() {
int args[NUM_SCRIPT_LOCAL];
memset(args, 0, sizeof(args));

1
engines/scumm/scumm.h
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@ -660,6 +660,7 @@ public:
void pauseGame();
void restart();
bool isUsingOriginalGUI();
bool isMessageBannerActive(); // For Indy4 Jap character shadows
protected:
Dialog *_pauseDialog = nullptr;