Step 1

Collision detection

The ability to lose is an important part of any game. How does the player lose? Well, in this game we'll make the level reload when the character crashes. We want to be able to check when the character is touched. Right-click on the character to edit its script.

To start with, grab the block that checks for the instance that touched me -- "When I am touched, get toucher". It's found under Physics. Drag this block out into an empty part of the workspace.