Algodoo Tutorials/Marbles

Introduction
Marbles are the most important things in any marble races. Without marbles, it wouldn't be a race. Marbles are made out of two different parts-circle and tracer. The tracer is not nessacery, but a lot of people use them.

Circle
The first thing people needed to do to make a marble is to make a circle that rolls like a marble and bounce like a marble (Except if they are using custom marbles.). First, use the circle tool to make a circle. Don't make it too big, otherwise it will not bounce much, and also don't make it too small, it moves a lot faster, bounces higher and it is easier for them to glitch out the track. So about a quarter of a meter for each marble. Right click on the marble, go to appearance and choose a color you want. Deselect "Draw Borders" if you don't want the borders to appear for the marbles (It looks the same for a completely black marble.) Also deselect "Circle Cake" if you want it to look neat (Again, it looks the same for a black marble.). Now you have your circle.

Tracer
This tracer part is optional.

This part is very simple. Right click on your marble, go to Geometry Actions and select "Attach Tracer". The tracer will appear as the same color as your marble. Select the tracer, go to Tracers, change "Fading time to something low, but not zero. If you don't want the tracer to show up at the front, deselect yourmarble by clicking somewhere else, select the tracer, go to Selections and select "Move Selected to Back". You won't see it anymore, but it is still there- behind the marble.