It's been awhile since I've uploaded anything, but I played a great game on Kongregate called Mutant Alien Assault and I wanted to make my own spinoff of it. Since it's going to be pretty similar to my previous game Project Armada I figured it might as well be a successor. Anyway, since I was too lazy to make another spirte I sort of forced myself to make it all in one, and ended up figuring this out in about 15 minutes. So after almost 5 years of scratch I figured this out in 15 minutes. Anyway, if you're wondering how I did it without sensors, it basically uses itself as a sensor by jumping slightly out of place, testing to see whether it's touching something, and then instnatly moves back to the original location and then takes an action based on what it had just detected. I wish I could claim that it is 100% completely perfect, but alas, it is not. However, the only real problem is the occasional falling through a thin floor. If there was a definite reason why this happens I would be able to fix it easily, but unfortunately, it seems to happen randomly. If anyone can figure out why it does this I would appreciate it.