Algodoo

A spawn engine that uses the new readable feature to spawn fuel at the same speed as the engine. You can do it without readable, but it's way more complicated, and I'm not good enough with scripting to do that.

The fatal flaw with spawn engines (for me) is that when you put them in any vehicle and get them moving, the spawn "explosions" will spawn with no speed, so the engine will skip over the explosion, making the explosion fall to the ground uselessly.

This engine will always spawn an explosion at the exact speed of the respective cylinder.

Go ahead and put it in a vehicle if you want, but make sure you give me credit.

(now to make a rocket and wing using readables!)