Hello!
I’m not sure if I’m making some mistake or if I’ve found a bug. I really hope it’s the former!
Let’s say I’m exporting a 2x2 rigid body cube and a 0.8x0.8 rigid body cube from blender 2.49b using the COLLADA 1.4 exporter plugin (0.3.162)
When I export, and I look inside the *.dae, I find this:
<shape>
<box>
<half_extents>1.00000 1.00000 1.00000</half_extents>
</box>
</shape>
…
<shape>
<box>
<half_extents>0.40000 0.40000 0.40000</half_extents>
</box>
</shape>
… which is correct as far as I can see. But! If I make a compound object of these two shapes, they:
a) both get the same ‘half_extent’ dimentions (i.e. they both say <half_extents>0.40000 0.40000 0.40000</half_extents> when the size of the boxes hasn’t changed)
b) there doesn’t seem to be anything in the XML that describes the parent/child relationship between the 2 boxes.
<library_physics_models>
<physics_model id=“Scene-PhysicsModel” name=“Scene-PhysicsModel”>
<rigid_body name=“Plane-RigidBody” sid=“Plane-RigidBody”>
<technique_common>
<dynamic>false</dynamic>
<mass>0</mass>
<instance_physics_material url="#Plane-PhysicsMaterial"/>
<shape>
<instance_geometry url="#Plane_001"/>
</shape>
</technique_common>
</rigid_body>
<rigid_body name=“Cube_001-RigidBody” sid=“Cube_001-RigidBody”>
<technique_common>
<dynamic>true</dynamic>
<mass>1.0</mass>
<instance_physics_material url="#Cube_001-PhysicsMaterial"/>
<shape>
<box>
<half_extents>0.40000 0.40000 0.40000</half_extents>
</box>
</shape>
</technique_common>
</rigid_body>
<rigid_body name=“Cube-RigidBody” sid=“Cube-RigidBody”>
<technique_common>
<dynamic>true</dynamic>
<mass>1.0</mass>
<instance_physics_material url="#Cube-PhysicsMaterial"/>
<shape>
<box>
<half_extents>0.40000 0.40000 0.40000</half_extents>
</box>
</shape>
</technique_common>
</rigid_body>
</physics_model>
</library_physics_models>
<library_physics_scenes>
<physics_scene id=“Scene-Physics” name=“Scene-Physics”>
<instance_physics_model url="#Scene-PhysicsModel">
<instance_rigid_body body=“Plane-RigidBody” target="#Plane"/>
<instance_rigid_body body=“Cube_001-RigidBody” target="#Cube_001"/>
<instance_rigid_body body=“Cube-RigidBody” target="#Cube"/>
</instance_physics_model>
</physics_scene>
</library_physics_scenes>
The settings should be right because it behaves correctly when using the blender game engine.
Any ideas?