I've faced another problem. I have a playing field inside my game which is based on tiles (I've used the "Jump&Run" Tutorial as a base for it). On this field there are some bombs which can detonate if the player fire them. If there are bombs on the neighbor field they should also explode. There are different kind of bombs with a different "explosion" radius in that other bombs should also explode...
Any idea how I can implement this feature? I've tried to check if another bomb is inside the explosion radius but it didn't work. I've also tried to give all bombs an instance variable (x,y) and check if another bomb is on a neighbor field, but this looks to be "not right"... :-(