The Struggles of Collision

Today I was working on finish up the 9th section, it was going good up until I got to the collision section. I managed to get the code for collision done and it all seemed to be working well up until the code was compiled, there was one big problem, the flies did disappear when they collided just not when it collided with the frog. The frog wouldn't make the flies disappear when they collided, only with each other. I ended up not solving this problem when the class finished and have been reflected on how to solve this problem. In the end after reflecting on it I decided that I would look more carefully at the code to find discrepancies and if that doesn't work, start from scratch.