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Fix: [NewGRF] Strange things happened, when using the synchronised tile loop animation trigger for houses. (#14011)

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frosch 2025-04-17 12:15:49 +02:00 committed by GitHub
parent 421f202539
commit 5aed046d11
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1 changed files with 20 additions and 17 deletions
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37
src/newgrf_house.cpp
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@ -628,12 +628,20 @@ bool CanDeleteHouse(TileIndex tile)
}
}
static void AnimationControl(TileIndex tile, uint16_t random_bits)
/**
* Call the tile loop animation trigger for houses, if enabled.
* @param tile House tile
* @param sync Whether to call the synchronized or the unsynchronized trigger.
* @param random_bits Shared random bits for the synchronized trigger.
*/
static void AnimationControl(TileIndex tile, bool sync, uint16_t random_bits)
{
const HouseSpec *hs = HouseSpec::Get(GetHouseType(tile));
if (hs->callback_mask.Test(HouseCallbackMask::AnimationStartStop)) {
uint32_t param = hs->extra_flags.Test(HouseExtraFlag::SynchronisedCallback1B) ? (GB(Random(), 0, 16) | random_bits << 16) : Random();
/* Check whether the matching trigger is enabled */
if (hs->callback_mask.Test(HouseCallbackMask::AnimationStartStop) &&
hs->extra_flags.Test(HouseExtraFlag::SynchronisedCallback1B) == sync) {
uint32_t param = sync ? (GB(Random(), 0, 16) | random_bits << 16) : Random();
HouseAnimationBase::ChangeAnimationFrame(CBID_HOUSE_ANIMATION_START_STOP, hs, Town::GetByTile(tile), tile, param, 0);
}
}
@ -650,21 +658,16 @@ bool NewHouseTileLoop(TileIndex tile)
TriggerHouse(tile, HOUSE_TRIGGER_TILE_LOOP);
if (hs->building_flags.Any(BUILDING_HAS_1_TILE)) TriggerHouse(tile, HOUSE_TRIGGER_TILE_LOOP_TOP);
if (hs->callback_mask.Test(HouseCallbackMask::AnimationStartStop)) {
/* If this house is marked as having a synchronised callback, all the
* tiles will have the callback called at once, rather than when the
* tile loop reaches them. This should only be enabled for the northern
* tile, or strange things will happen (here, and in TTDPatch). */
if (hs->extra_flags.Test(HouseExtraFlag::SynchronisedCallback1B)) {
uint16_t random = GB(Random(), 0, 16);
/* Call the unsynchronized tile loop trigger */
AnimationControl(tile, false, 0);
if (hs->building_flags.Any(BUILDING_HAS_1_TILE)) AnimationControl(tile, random);
if (hs->building_flags.Any(BUILDING_2_TILES_Y)) AnimationControl(TileAddXY(tile, 0, 1), random);
if (hs->building_flags.Any(BUILDING_2_TILES_X)) AnimationControl(TileAddXY(tile, 1, 0), random);
if (hs->building_flags.Any(BUILDING_HAS_4_TILES)) AnimationControl(TileAddXY(tile, 1, 1), random);
} else {
AnimationControl(tile, 0);
}
/* Call the synchronized tile loop trigger, if this is the north tile */
if (hs->building_flags.Any(BUILDING_HAS_1_TILE)) {
uint16_t random = GB(Random(), 0, 16);
AnimationControl(tile, true, random);
if (hs->building_flags.Any(BUILDING_2_TILES_Y)) AnimationControl(TileAddXY(tile, 0, 1), true, random);
if (hs->building_flags.Any(BUILDING_2_TILES_X)) AnimationControl(TileAddXY(tile, 1, 0), true, random);
if (hs->building_flags.Any(BUILDING_HAS_4_TILES)) AnimationControl(TileAddXY(tile, 1, 1), true, random);
}
/* Check callback 21, which determines if a house should be destroyed. */