Begin parsing. A callback member will be ran for each matched element of the input.
This delegate is called when found a block. It is called with an ID corresponding to the tile type declaration (from onDeclarations) and a definition of the block's height.
This delegate is called with data declarations at the start of the file.
This delegate is called when matched an entry, that is, a row of blocks in an arbitrary position.
Struct for advanced tilemap loading.