void ScreenEffects::stepBlendedPalette() {
if (_blendedPaletteStatus._active && _blendedPaletteStatus._value < _blendedPaletteStatus._maxValue) {
setBlendedPalette(_blendedPaletteStatus._palette, _blendedPaletteStatus._newPalette,
_blendedPaletteStatus._colorCount, _blendedPaletteStatus._value, _blendedPaletteStatus._maxValue);
if (_blendedPaletteStatus._value == _blendedPaletteStatus._maxValue)
_blendedPaletteStatus._value++;
else
_blendedPaletteStatus._value = MIN<int16>(_blendedPaletteStatus._value + _blendedPaletteStatus._incr, _blendedPaletteStatus._maxValue);
}
}
// "Checkerboard" effect
void ScreenEffects::vfx09(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
for (int i = 0; i < 8; i++) {
copyFxRect(surface, 0, 0, 320, 200);
// We set the final palette here, once
setBlendedPalette(palette, newPalette, colorCount, i * 4 + 3, 32);
// The original behavior follows - the end result is the same, though
//for (int j = 0; j < 4; j++)
// setBlendedPalette(palette, newPalette, colorCount, i * 4 + j, 32);
_screen->updateScreenAndWait(25);
}
setPalette(palette);
}
// Palette fadeout/fadein
void ScreenEffects::vfx17(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
byte tempPalette[768];
bool savedPaletteLock = _screen->isPaletteLocked();
_screen->setPaletteLock(false);
memcpy(tempPalette, palette, 768);
// We reduce the number of palette updates by the following factor (e.g. a factor of 5 would mean 5
// times less updates). This is done to reduce CPU load while performing the very expensive full
// screen palette changes. The original behavior is to set factor to 1.
int factor = 5;
// Fade out to black
memset(palette, 0, 768);
for (int i = 0; i < 50 / factor; i++) {
setBlendedPalette(palette, newPalette, colorCount, i * factor, 50);
_screen->updateScreenAndWait(25 * factor);
}
_screen->setRGBPalette(palette, 0, colorCount);
memcpy(palette, tempPalette, 768);
_screen->showWorkScreen();
// Fade from black to palette
memset(newPalette, 0, 768);
for (int i = 0; i < 50 / factor; i++) {
setBlendedPalette(palette, newPalette, colorCount, i * factor, 50);
_screen->updateScreenAndWait(25 * factor);
}
_screen->setRGBPalette(palette, 0, colorCount);
_screen->setPaletteLock(savedPaletteLock);
}
