public void GenerateWalls(
	int tileRadius
)

After this function completes, WallCoordinates will contain information about all the walls for this light source. Note that this information is shared among all light sources, and so should be transferred to the Display object before calculating walls for other light sources. Large radiuses may harm performance without improving results because there are a limited number of walls that the display can handle. Once this limit is reached, no more walls are processed regardless of whether the information for them has been calculated. However, it is possible with larger radius values to extend existing walls farther because each wall is simply a line that can be extended for any length of colinear tiles.