bool BaseSurfaceOSystem::drawSprite(int x, int y, Rect32 *rect, float zoomX, float zoomY, uint32 alpha, bool alphaDisable, TSpriteBlendMode blendMode, bool mirrorX, bool mirrorY, int offsetX, int offsetY) {
BaseRenderOSystem *renderer = static_cast<BaseRenderOSystem *>(_gameRef->_renderer);
if (!_loaded) {
finishLoad();
}
if (renderer->_forceAlphaColor != 0) {
alpha = renderer->_forceAlphaColor;
}
byte r = RGBCOLGetR(alpha);
byte g = RGBCOLGetG(alpha);
byte b = RGBCOLGetB(alpha);
byte a = RGBCOLGetA(alpha);
renderer->setAlphaMod(a);
renderer->setColorMod(r, g, b);
#if 0 // These are kept for reference if BlendMode is reimplemented at some point.
if (alphaDisable) {
SDL_SetTextureBlendMode(_texture, SDL_BLENDMODE_NONE);
} else {
SDL_SetTextureBlendMode(_texture, SDL_BLENDMODE_BLEND);
}
#endif
// TODO: This _might_ miss the intended behaviour by 1 in each direction
// But I think it fits the model used in Wintermute.
Common::Rect srcRect;
srcRect.left = rect->left;
srcRect.top = rect->top;
srcRect.setWidth(rect->right - rect->left);
srcRect.setHeight(rect->bottom - rect->top);
Common::Rect position;
position.left = x + offsetX;
position.top = y + offsetY;
// Crop off-by-ones:
if (position.left == -1) {
position.left = 0; // TODO: Something is wrong
}
if (position.top == -1) {
position.top = 0; // TODO: Something is wrong
}
position.setWidth((int16)((float)srcRect.width() * zoomX / 100.f));
position.setHeight((int16)((float)srcRect.height() * zoomX / 100.f));
renderer->modTargetRect(&position);
/* position.left += offsetX;
position.top += offsetY;*/
// TODO: This actually requires us to have the SAME source-offsets every time,
// But no checking is in place for that yet.
// TODO: Optimize by not doing alpha-blits if we lack or disable alpha
bool hasAlpha;
if (_hasAlpha && !alphaDisable) {
hasAlpha = true;
} else {
hasAlpha = false;
}
if (alphaDisable) {
warning("BaseSurfaceOSystem::drawSprite - AlphaDisable ignored");
}
renderer->drawSurface(this, _surface, &srcRect, &position, mirrorX, mirrorY, !hasAlpha);
return STATUS_OK;
}
