Planet/Ball Simulation

Click and drag to create circles. Dark gray means youre currently making it, and light gray means its there to stay. Use the X key to place down particles (the purple things) at your mouse cursor. Use the Z key to switch between modes: "Ball Sim" means the circles will fall down, and particles wont do anything. "Planet Sim" means the circles wont do anything, but the particles will be attracted with a force towards them. "Both" means the circles with fall and the particles will travel towards th...