Tower mechanics

I changed the tower mechanics today, and I am hoping to finish it next class. I have it set up where when the mites hit a trap a counter appears, and other mite groups can move through until the trap is cleared. Clearing the trap is my current problem. I'm trying to figure out how to set two variables for the "if" scripting. I'll try to update the base to where the forest degrades when a mite group hits it.

New Ideas

After working on my game today, I had an idea. The current gameplay on what the character does isn't available to the average person. But now I think that once the mites stop the character has to follow the mites' path to find their source. There he will find out that the even a normal person can easily help fight against invasive species.