string:"fileName"			filename of chipset this map uses
2D Array:"tileUpperImage"	stores chipSet index of each tile (layer 2)
2D Array:"tileLowerImage"	stores chipSet index of each tile (layer 1)
2D Array:"tileTerrain"		stores terrain index of each tile
1D Array:"defaultTerrain"	stores default terrain of each tile in the
					tilePalette (chipSet independant!)


* EDITOR *
bool:"active"			whether the map editor itself is active
bitmap:"chipSet_pic"		contains loaded tile palette image
bitmap:"chipTerrain_pic"	displays default terrain values of each chipSet tile
number:"selectedTile"		tile you're placing  (chipSet palette index)
number:"mapTileX"			selected tile on the map
number:"mapTileY"			selected tile on the map
number:"newTerrainTile"		The value to write to a terrain tile when its clicked.
						if this is -1, then data will not be altered.
bool:"returnTile"			Specifies whether clicking selects a tile.
bool:"mouseIsDown"		States whether the mouse button is pressed.
