Bumbleball

The bumbleball is a new Portal 2 puzzle element created by Skotty and Moth.

If the bumbleball is outside of the players view it will bounce around every 2 seconds, making a distinctive sound when bouncing. They're *very* different to spheres, and behave differently to blue painted cubes, making them unique in this respect.

http://forums.thinkingwithportals.com/downloads.php?view=detail&df_id=1377

The download contains:

-A normal sphere button specialized for the bumbleballs, not useable with other objects.
-the single bumbleball (model and textures)
-droppers for bumbleballs, dirty and clean
-the .PSD file for custom textures

bumbleball supports up to 16 skins -- 'skin' values 0-15 in Hammer
It consists of:

a physics model, with an internal env_shake (this causes it to bounce around by a variable amount)
a trigger_look which detects if the player is looking at the ball, and toggles the env_shake

No scripting is required to add a bumbleball to your map; just add one of the included dropper instances, and trigger it with a button.

Known Bugs

• For dissolving a bumbleball (for example in toxic water) you have to FireUser4
  
• Paint will colour the bumbleball, but because it's a normal prop_physics, it won't jump or glide. The use of a prop_physics_paintable fixes that problem, but the ball won't be visibly painted.