Nice, thanks for playing. Movement and dragging need rework, shouldn't be a struggle in this kind of "setup lasers to shoot" game.
As for lasers killing the player - I've experimented with that before and am afraid that it might impose limits on experimenting with laser builds. You would be afraid of trying something out or setting up a crazy thing because you could just die. Maybe lasers could push the player and be more of a nuisance than deadly. Or if ever different kind of "non-full spectrum" beams become a thing they might be more powerul but deadly as well as an increase of difficulty together with player power/beam utility. But different beam colors should come after I find the right set of pieces to create some kind of emergent "engine of lasers" used for efficient mining and killing. This is what I'm looking for - redstone and pistons of Minecraft, conveyour belts of Factorio, but with laser beams.