Base class for tiles.
Tile coordinate.
State.
Get the tile coordinate for this tile.
The tile coordinate.
抽象
Load the image or retry if loading previously failed. Loading is taken care of by the tile queue, and calling this method is only needed for preloading or for reloading in case of an error.
Classdesc
Base class for tiles.
參數: tileCoord
Tile coordinate.
參數: state
State.