Variables
inlineread onlyNONE:FlxTilemapDiagonalPolicy = 0
No diagonal movement allowed when calculating the path
inlineread onlyNORMAL:FlxTilemapDiagonalPolicy = 1
Diagonal movement costs the same as orthogonal movement
inlineread onlyWIDE:FlxTilemapDiagonalPolicy = 2
Diagonal movement costs one more than orthogonal movement