The FoodSpace class
- By subclassing from Discrete2d FoodSpace inherits several Ivars and about 16 methods to store and retrieve values in 2d space
- The only addition is a method to fill space with “food”
-seedFoodWithProb:(float)seedProb
for (y = 0; y < ysize; y++)
for (x = 0; x < xsize; x++)