public void DestroyCollisionMaterial(ObiCollisionMaterialHandle handle)
{
if (collisionMaterials != null && handle != null && handle.isValid && handle.index < materialHandles.Count)
{
int index = handle.index;
int lastIndex = materialHandles.Count - 1;
// swap all collider info:
materialHandles.Swap(index, lastIndex);
collisionMaterials.Swap(index, lastIndex);
// update the index of the handle we swapped with:
materialHandles[index].index = index;
// invalidate our handle:
// (after updating the swapped one!
// in case there's just one handle in the array,
// we need to write -1 after 0)
handle.Invalidate();
// remove last index:
materialHandles.RemoveAt(lastIndex);
collisionMaterials.count--;
DestroyIfUnused();
}
}
public ObiCollisionMaterialHandle CreateCollisionMaterial()
{
var handle = new ObiCollisionMaterialHandle(materialHandles.Count);
materialHandles.Add(handle);
collisionMaterials.Add(new CollisionMaterial());
return(handle);
}
protected void CreateMaterialIfNeeded()
{
if (materialHandle == null || !materialHandle.isValid)
{
var world = ObiColliderWorld.GetInstance();
// create the material:
materialHandle = world.CreateCollisionMaterial();
materialHandle.owner = this;
// copy material data from this material (use materialHandle instead of handle, to not retrigger CreateMaterialIfNeeded)
var mat = world.collisionMaterials[materialHandle.index];
mat.FromObiCollisionMaterial(this);
world.collisionMaterials[materialHandle.index] = mat;
}
}