Collidable & Moveable Objects

Objects which you can drive into and move require some special setup at export time.

GMT Export

  • Firstly they should be exported with "Collide" and "Moveable" tags.
  • The Moveable one must be set at export as it ensures we have a local pivot point.
  • There has been some recommendation to export objects with Max Normals too and all welded together with anything that is a collidable object.

Instance Naming

The object must also match naming of defined "loose" object data.

This is setup in the GDB file, some examples are beneath:

///////////////////////////LOOSE OBJECT DATA///////////////////////////
//<mass>, <inertia x>, <inertia y>, <inertia z>, <spring>, <damper>, <friction>

post_ApexMarker=(15.5, 1.0, 1.0, 1.0, 4500.0, 300.0, 0.8)
post_tiresStack=(350, 240.0, 210.0, 270.0, 1000.0, 400.0, 1.5)
sign_DistMark=(24, 8.5, 8.5, 8.0, 2400.0, 144.0, 0.4)
cone=(3.2, 0.3, 0.3, 0.5, 500.0, 60.0, 0.7)


The typical prefixes are "Post", "Sign" and "Cone".