StrongType::Typedef< uint32_t, struct TileIndexTag, StrongType::Compare, StrongType::Integer, StrongType::Compatible< int32_t >, StrongType::Compatible< int64_t > > TileIndex
The index/ID of a Tile.
void YapfBuildRiver(TileIndex start_tile, TileIndex end_tile, TileIndex spring_tile, bool main_river)
Builds a river from the start tile to the end tile.