Function DrawTile_Town

src/town_cmd.cpp:264–303

* Draw a house and its tile. This is a tile callback routine. * @param ti TileInfo of the tile to draw */

 * @param ti TileInfo of the tile to draw
 */
static void DrawTile_Town(TileInfo *ti)
{
	HouseID house_id = GetHouseType(ti->tile);

	if (house_id >= NEW_HOUSE_OFFSET) {
		/* Houses don't necessarily need new graphics. If they don't have a
		 * spritegroup associated with them, then the sprite for the substitute
		 * house id is drawn instead. */
		if (HouseSpec::Get(house_id)->grf_prop.HasSpriteGroups()) {
			DrawNewHouseTile(ti, house_id);
			return;
		} else {
			house_id = HouseSpec::Get(house_id)->grf_prop.subst_id;
		}
	}

	/* Retrieve pointer to the draw town tile struct */
	const DrawBuildingsTileStruct *dcts = &_town_draw_tile_data[house_id << 4 | TileHash2Bit(ti->x, ti->y) << 2 | GetHouseBuildingStage(ti->tile)];

	if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED);

	DrawGroundSprite(dcts->ground.sprite, dcts->ground.pal);

	/* If houses are invisible, do not draw the upper part */
	if (IsInvisibilitySet(TO_HOUSES)) return;

	/* Add a house on top of the ground? */
	SpriteID image = dcts->building.sprite;
	if (image != 0) {
		AddSortableSpriteToDraw(image, dcts->building.pal, *ti, *dcts, IsTransparencySet(TO_HOUSES));

		if (IsTransparencySet(TO_HOUSES)) return;
	}

	{
		int proc = dcts->draw_proc - 1;

		if (proc >= 0) _town_draw_tile_procs[proc](ti);
	}
}

static int GetSlopePixelZ_Town(TileIndex tile, uint, uint, bool)
{