Here's a demo of the game I've been making, if you guys are interested. It uses FreeBASIC, OpenGL and Chipmunk. I plan to add sound effects and music with OpenAL, but I haven't made it to that stage yet. Anyway, I thought some of you might be interested in playing around with it. this download is a .rar file with a windows binary included.
Very nice start, got a lot of potential. Could definitely do with a better indication of whether two pieces are connected. I found myself drawing a rod from the center, but missing one of the wheels.
Thanks buddy. I thought that when I added a sound, I would also add an indicator sound for that snapping action. I also thought about giving the player some way to adjust the snap radius.