So, I've created an obstacle animation. It's a satellite that moves up and down by one pixel. Really basic stuff. The issue I'm having is being able to collide the next bullet in my bullet table with the satellite and then switching animation 'A' with animation 'B.' Animations either switch once and don't switch again, or they don't work altogether or they switch too fast. Frusterated, I finally tried creating a obstacle "class" of sorts and placed all my functions into one lua file. Only problem with that is it's giving me an error. This is a head scratcher.

My bullets move at x speed until they leave the screen and get removed from memory. However, if one of the bullets hit an enemy, the x speed variable changes.

My bullets start moving slower and slower. This can be seen when you have 6 out of the 7 enemies killed. The bullets move very slowly, and then when you finally kill the last enemy, the bullets shoot at the top x speed again causing a strange visual effect.

This is jarring and I can't exactly figure out where in the code it's happening. Any help would be appreciated, although I'll probably find it if I just keep looking. One possible issue might be due to my collision table loops, but I'm not sure.