void DrawNewHouseTile(TileInfo *ti, HouseID house_id)
{
const HouseSpec *hs = HouseSpec::Get(house_id);
if (ti->tileh != SLOPE_FLAT) {
bool draw_old_one = true;
if (HasBit(hs->callback_mask, CBM_HOUSE_DRAW_FOUNDATIONS)) {
/* Called to determine the type (if any) of foundation to draw for the house tile */
uint32 callback_res = GetHouseCallback(CBID_HOUSE_DRAW_FOUNDATIONS, 0, 0, house_id, Town::GetByTile(ti->tile), ti->tile);
if (callback_res != CALLBACK_FAILED) draw_old_one = ConvertBooleanCallback(hs->grf_prop.grffile, CBID_HOUSE_DRAW_FOUNDATIONS, callback_res);
}
if (draw_old_one) DrawFoundation(ti, FOUNDATION_LEVELED);
}
HouseResolverObject object(house_id, ti->tile, Town::GetByTile(ti->tile));
const SpriteGroup *group = SpriteGroup::Resolve(hs->grf_prop.spritegroup[0], &object);
if (group != NULL && group->type == SGT_TILELAYOUT) {
/* Limit the building stage to the number of stages supplied. */
const TileLayoutSpriteGroup *tlgroup = (const TileLayoutSpriteGroup *)group;
byte stage = GetHouseBuildingStage(ti->tile);
DrawTileLayout(ti, tlgroup, stage, house_id);
}
}
static void DrawTileLayout(const TileInfo *ti, const TileLayoutSpriteGroup *group, byte stage, HouseID house_id)
{
const DrawTileSprites *dts = group->ProcessRegisters(&stage);
const HouseSpec *hs = HouseSpec::Get(house_id);
PaletteID palette = hs->random_colour[TileHash2Bit(ti->x, ti->y)] + PALETTE_RECOLOUR_START;
if (HasBit(hs->callback_mask, CBM_HOUSE_COLOUR)) {
uint16 callback = GetHouseCallback(CBID_HOUSE_COLOUR, 0, 0, house_id, Town::GetByTile(ti->tile), ti->tile);
if (callback != CALLBACK_FAILED) {
/* If bit 14 is set, we should use a 2cc colour map, else use the callback value. */
palette = HasBit(callback, 14) ? GB(callback, 0, 8) + SPR_2CCMAP_BASE : callback;
}
}
SpriteID image = dts->ground.sprite;
PaletteID pal = dts->ground.pal;
if (HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE)) image += stage;
if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += stage;
if (GB(image, 0, SPRITE_WIDTH) != 0) {
DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, palette));
}
DrawNewGRFTileSeq(ti, dts, TO_HOUSES, stage, palette);
}
void DrawNewHouseTile(TileInfo *ti, HouseID house_id)
{
const HouseSpec *hs = HouseSpec::Get(house_id);
const SpriteGroup *group;
ResolverObject object;
if (ti->tileh != SLOPE_FLAT) {
bool draw_old_one = true;
if (HasBit(hs->callback_mask, CBM_HOUSE_DRAW_FOUNDATIONS)) {
/* Called to determine the type (if any) of foundation to draw for the house tile */
uint32 callback_res = GetHouseCallback(CBID_HOUSE_DRAW_FOUNDATIONS, 0, 0, house_id, Town::GetByTile(ti->tile), ti->tile);
draw_old_one = (callback_res != 0);
}
if (draw_old_one) DrawFoundation(ti, FOUNDATION_LEVELED);
}
NewHouseResolver(&object, house_id, ti->tile, Town::GetByTile(ti->tile));
group = SpriteGroup::Resolve(hs->spritegroup, &object);
if (group == NULL || group->type != SGT_TILELAYOUT) {
return;
} else {
/* Limit the building stage to the number of stages supplied. */
const TileLayoutSpriteGroup *tlgroup = (const TileLayoutSpriteGroup *)group;
byte stage = GetHouseBuildingStage(ti->tile);
stage = Clamp(stage - 4 + tlgroup->num_building_stages, 0, tlgroup->num_building_stages - 1);
DrawTileLayout(ti, tlgroup, stage, house_id);
}
}
static void AnimationControl(TileIndex tile, uint16 random_bits)
{
const HouseSpec *hs = HouseSpec::Get(GetHouseType(tile));
if (HasBit(hs->callback_mask, CBM_HOUSE_ANIMATION_START_STOP)) {
uint32 param = (hs->extra_flags & SYNCHRONISED_CALLBACK_1B) ? (GB(Random(), 0, 16) | random_bits << 16) : Random();
uint16 callback_res = GetHouseCallback(CBID_HOUSE_ANIMATION_START_STOP, param, 0, GetHouseType(tile), Town::GetByTile(tile), tile);
if (callback_res != CALLBACK_FAILED) ChangeHouseAnimationFrame(hs->grffile, tile, callback_res);
}
}
bool CanDeleteHouse(TileIndex tile)
{
const HouseSpec *hs = HouseSpec::Get(GetHouseType(tile));
/* Humans are always allowed to remove buildings, as is water and
* anyone using the scenario editor. */
if (Company::IsValidHumanID(_current_company) || _current_company == OWNER_WATER || _current_company == OWNER_NONE) {
return true;
}
if (HasBit(hs->callback_mask, CBM_HOUSE_DENY_DESTRUCTION)) {
uint16 callback_res = GetHouseCallback(CBID_HOUSE_DENY_DESTRUCTION, 0, 0, GetHouseType(tile), Town::GetByTile(tile), tile);
return (callback_res == CALLBACK_FAILED || !ConvertBooleanCallback(hs->grf_prop.grffile, CBID_HOUSE_DENY_DESTRUCTION, callback_res));
} else {
return !(hs->extra_flags & BUILDING_IS_PROTECTED);
}
}
bool NewHouseTileLoop(TileIndex tile)
{
const HouseSpec *hs = HouseSpec::Get(GetHouseType(tile));
if (GetHouseProcessingTime(tile) > 0) {
DecHouseProcessingTime(tile);
return true;
}
TriggerHouse(tile, HOUSE_TRIGGER_TILE_LOOP);
if (hs->building_flags & BUILDING_HAS_1_TILE) TriggerHouse(tile, HOUSE_TRIGGER_TILE_LOOP_TOP);
if (HasBit(hs->callback_mask, CBM_HOUSE_ANIMATION_START_STOP)) {
/* 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 & SYNCHRONISED_CALLBACK_1B) {
uint16 random = GB(Random(), 0, 16);
if (hs->building_flags & BUILDING_HAS_1_TILE) AnimationControl(tile, random);
if (hs->building_flags & BUILDING_2_TILES_Y) AnimationControl(TILE_ADDXY(tile, 0, 1), random);
if (hs->building_flags & BUILDING_2_TILES_X) AnimationControl(TILE_ADDXY(tile, 1, 0), random);
if (hs->building_flags & BUILDING_HAS_4_TILES) AnimationControl(TILE_ADDXY(tile, 1, 1), random);
} else {
AnimationControl(tile, 0);
}
}
/* Check callback 21, which determines if a house should be destroyed. */
if (HasBit(hs->callback_mask, CBM_HOUSE_DESTRUCTION)) {
uint16 callback_res = GetHouseCallback(CBID_HOUSE_DESTRUCTION, 0, 0, GetHouseType(tile), Town::GetByTile(tile), tile);
if (callback_res != CALLBACK_FAILED && Convert8bitBooleanCallback(hs->grf_prop.grffile, CBID_HOUSE_DESTRUCTION, callback_res)) {
ClearTownHouse(Town::GetByTile(tile), tile);
return false;
}
}
SetHouseProcessingTime(tile, hs->processing_time);
MarkTileDirtyByTile(tile);
return true;
}
/* Simple wrapper for GetHouseCallback to keep the animation unified. */
uint16 GetSimpleHouseCallback(CallbackID callback, uint32 param1, uint32 param2, const HouseSpec *spec, Town *town, TileIndex tile, uint32 extra_data)
{
return GetHouseCallback(callback, param1, param2, spec - HouseSpec::Get(0), town, tile, false, 0, extra_data);
}
void AnimateNewHouseTile(TileIndex tile)
{
const HouseSpec *hs = HouseSpec::Get(GetHouseType(tile));
byte animation_speed = hs->animation_speed;
bool frame_set_by_callback = false;
if (HasBit(hs->callback_mask, CBM_HOUSE_ANIMATION_SPEED)) {
uint16 callback_res = GetHouseCallback(CBID_HOUSE_ANIMATION_SPEED, 0, 0, GetHouseType(tile), Town::GetByTile(tile), tile);
if (callback_res != CALLBACK_FAILED) animation_speed = Clamp(callback_res & 0xFF, 2, 16);
}
/* An animation speed of 2 means the animation frame changes 4 ticks, and
* increasing this value by one doubles the wait. 2 is the minimum value
* allowed for animation_speed, which corresponds to 120ms, and 16 is the
* maximum, corresponding to around 33 minutes. */
if (_tick_counter % (1 << animation_speed) != 0) return;
byte frame = GetHouseAnimationFrame(tile);
byte num_frames = GB(hs->animation_frames, 0, 7);
if (HasBit(hs->callback_mask, CBM_HOUSE_ANIMATION_NEXT_FRAME)) {
uint32 param = (hs->extra_flags & CALLBACK_1A_RANDOM_BITS) ? Random() : 0;
uint16 callback_res = GetHouseCallback(CBID_HOUSE_ANIMATION_NEXT_FRAME, param, 0, GetHouseType(tile), Town::GetByTile(tile), tile);
if (callback_res != CALLBACK_FAILED) {
frame_set_by_callback = true;
switch (callback_res & 0xFF) {
case 0xFF:
DeleteAnimatedTile(tile);
break;
case 0xFE:
/* Carry on as normal. */
frame_set_by_callback = false;
break;
default:
frame = callback_res & 0xFF;
break;
}
/* If the lower 7 bits of the upper byte of the callback
* result are not empty, it is a sound effect. */
if (GB(callback_res, 8, 7) != 0) PlayTileSound(hs->grffile, GB(callback_res, 8, 7), tile);
}
}
if (!frame_set_by_callback) {
if (frame < num_frames) {
frame++;
} else if (frame == num_frames && HasBit(hs->animation_frames, 7)) {
/* This animation loops, so start again from the beginning */
frame = 0;
} else {
/* This animation doesn't loop, so stay here */
DeleteAnimatedTile(tile);
}
}
SetHouseAnimationFrame(tile, frame);
MarkTileDirtyByTile(tile);
}
