Function Animation_Func_SetGroundTile

src/animation.c:133–171

* Set the ground sprite of the tile. * @param animation The Animation for which we change the ground sprite. * @param parameter The offset in the iconGroup to which the ground sprite is set. */

 * @param parameter The offset in the iconGroup to which the ground sprite is set.
 */
static void Animation_Func_SetGroundTile(Animation *animation, int16 parameter)
{
	uint16 specialMap[1];
	uint16 *iconMap;
	const uint16 *layout = g_table_structure_layoutTiles[animation->tileLayout];
	uint16 layoutTileCount = g_table_structure_layoutTileCount[animation->tileLayout];
	uint16 packed = Tile_PackTile(animation->tile);
	int i;

	iconMap = &g_iconMap[g_iconMap[animation->iconGroup] + layoutTileCount * parameter];

	/* Some special case for turrets */
	if ((parameter > 1) && (animation->iconGroup == ICM_ICONGROUP_BASE_DEFENSE_TURRET || animation->iconGroup == ICM_ICONGROUP_BASE_ROCKET_TURRET)) {
		Structure *s = Structure_Get_ByPackedTile(packed);
		assert(s != NULL);
		assert(layoutTileCount == 1);

		specialMap[0] = s->rotationSpriteDiff + g_iconMap[g_iconMap[animation->iconGroup]] + 2;
		iconMap = specialMap;
	}

	for (i = 0; i < layoutTileCount; i++) {
		uint16 position = packed + (*layout++);
		uint16 tileID = *iconMap++;
		Tile *t = &g_map[position];

		if (t->groundTileID == tileID) continue;
		t->groundTileID = tileID;
		t->houseID = animation->houseID;

		if (Map_IsPositionUnveiled(position)) {
			t->overlayTileID = 0;
		}

		Map_Update(position, 0, false);

		Map_MarkTileDirty(position);
	}
}

/**
 * Forward the current Animation with the given amount of steps.