Func breakable surf



It creates a surface that can be broken bit by bit. All faces except one should use the texture. Faces that will be broken must have exactly four sides. The material applied to the visible face must be set up to be breakable.

The following standard textures are meant to work with this entity (using any other may crash the game on startup!):
 * (but not !)
 * (using this will stretch the texture if broken)