B3d Collisions

The B3d Collisions modifier is a collection of collision related options.

Collision Type - All objects with the same number are in the same collision group (see Blitz3d: EntityType command)

• Recursive - Apply collision type to children.

Collision Sphere - Defines a collision sphere/ellipsoid (see Blitz3d: EntityRadius command)

• NOTE: Collision ellipsoids are centered on the object's pivot.
• Radius -  (x,z) sets the size of the ellipsoid.
• Show - Shows a ghosted preview of the ellipsoid.
• Auto-Fit - Tries to fit the ellipsoid to the object (works best on objects whose pivots are central)

Collision Box - Defines a collision box (see Blitz3d: EntityBox command)

• NOTE: Collision boxes are defined in the object's local space and cannot be rotated independently of the object.
• Position - (x,y,z) sets the origin of the box
• Size -  (x,y,z) sets the size of box
• Show - Shows a ghosted preview of the box.
• Auto-Fit - Fits the box to the object.

Pick Mode: Sets the objects Pick Mode (see Blitz3d: EntityPickMode command)

• Obscurer: Obscures objects with the Occluded by Obscurer property (see Blitz3d: EntityVisible command)

B3d Data Format

Collision Type:

• Prefix: B3D_COLL_[num]_[recursive]_
  • num: collision type
  • recursive: 0 or 1

Collision Sphere:

• Prefix: B3D_RADIUS_[x#]_[z#]_
  • x,z: size of ellipsoid

Collision Box:

• Prefix: B3D_BOX_[x#]_[y#]_[z#]_[width#]_[depth#]_[height#]_
  • x,y,z: origin of box (local coords)
  • width,depth,height: size of box

Pick Mode:

• Prefix: B3D_PICK_[type]_[obscurer]_
  • type: 1 = Sphere, 2 = Polygon, 3 = Box
  • obscurer: 0 or 1