void GfxPalette32::doCycle(const uint8 fromColor, const int16 speed) {
PalCycler *const cycler = getCycler(fromColor);
if (cycler != nullptr) {
cycler->lastUpdateTick = g_sci->getTickCount();
updateCycler(*cycler, speed);
}
}
void GfxPalette32::setCycle(const uint8 fromColor, const uint8 toColor, const int16 direction, const int16 delay) {
assert(fromColor < toColor);
PalCycler *cycler = getCycler(fromColor);
if (cycler != nullptr) {
clearCycleMap(fromColor, cycler->numColorsToCycle);
} else {
for (int i = 0; i < kNumCyclers; ++i) {
if (!_cyclers[i]) {
cycler = new PalCycler;
_cyclers[i].reset(cycler);
break;
}
}
}
// If there are no free cycler slots, SSCI overrides the first oldest cycler
// that it finds, where "oldest" is determined by the difference between the
// tick and now
if (cycler == nullptr) {
const uint32 now = g_sci->getTickCount();
uint32 minUpdateDelta = 0xFFFFFFFF;
for (int i = 0; i < kNumCyclers; ++i) {
PalCyclerOwner &candidate = _cyclers[i];
const uint32 updateDelta = now - candidate->lastUpdateTick;
if (updateDelta < minUpdateDelta) {
minUpdateDelta = updateDelta;
cycler = candidate.get();
}
}
clearCycleMap(cycler->fromColor, cycler->numColorsToCycle);
}
uint16 numColorsToCycle = toColor - fromColor;
if (g_sci->_features->hasMidPaletteCode()) {
numColorsToCycle += 1;
}
cycler->fromColor = fromColor;
cycler->numColorsToCycle = numColorsToCycle;
cycler->currentCycle = fromColor;
cycler->direction = direction < 0 ? kPalCycleBackward : kPalCycleForward;
cycler->delay = delay;
cycler->lastUpdateTick = g_sci->getTickCount();
cycler->numTimesPaused = 0;
setCycleMap(fromColor, numColorsToCycle);
}
void GfxPalette32::setCycle(const uint8 fromColor, const uint8 toColor, const int16 direction, const int16 delay) {
assert(fromColor < toColor);
PalCycler *cycler = getCycler(fromColor);
if (cycler != nullptr) {
clearCycleMap(fromColor, cycler->numColorsToCycle);
} else {
for (int i = 0; i < kNumCyclers; ++i) {
if (_cyclers[i] == nullptr) {
_cyclers[i] = cycler = new PalCycler;
break;
}
}
}
// If there are no free cycler slots, SCI engine overrides the first oldest
// cycler that it finds, where "oldest" is determined by the difference
// between the tick and now
if (cycler == nullptr) {
const uint32 now = g_sci->getTickCount();
uint32 minUpdateDelta = 0xFFFFFFFF;
for (int i = 0; i < kNumCyclers; ++i) {
PalCycler *const candidate = _cyclers[i];
const uint32 updateDelta = now - candidate->lastUpdateTick;
if (updateDelta < minUpdateDelta) {
minUpdateDelta = updateDelta;
cycler = candidate;
}
}
clearCycleMap(cycler->fromColor, cycler->numColorsToCycle);
}
uint16 numColorsToCycle = toColor - fromColor;
if (getSciVersion() >= SCI_VERSION_2_1_MIDDLE || g_sci->getGameId() == GID_KQ7) {
numColorsToCycle += 1;
}
cycler->fromColor = fromColor;
cycler->numColorsToCycle = numColorsToCycle;
cycler->currentCycle = fromColor;
cycler->direction = direction < 0 ? kPalCycleBackward : kPalCycleForward;
cycler->delay = delay;
cycler->lastUpdateTick = g_sci->getTickCount();
cycler->numTimesPaused = 0;
setCycleMap(fromColor, numColorsToCycle);
}
void GfxPalette32::cyclePause(const uint8 fromColor) {
PalCycler *const cycler = getCycler(fromColor);
if (cycler != nullptr) {
++cycler->numTimesPaused;
}
}
void GfxPalette32::cycleOn(const uint8 fromColor) {
PalCycler *const cycler = getCycler(fromColor);
if (cycler != nullptr && cycler->numTimesPaused > 0) {
--cycler->numTimesPaused;
}
}