//Don't try to call functions on other objects such as the Physics world since they may not exit.
public virtual void Awake()
{
m_collisionShape = this.GetParent <Unit>().GetComponent <BCollisionShape>();
if (m_collisionShape == null)
{
Log.Warning("A BCollisionObject component must be on an object with a BCollisionShape component.");
}
}
//called by Physics World just before rigid body is added to world.
//the current rigid body properties are used to rebuild the rigid body.
internal virtual bool _BuildCollisionObject()
{
BPhysicsWorld world = BPhysicsWorld.Get;
if (m_collisionObject != null)
{
if (isInWorld && world != null)
{
world.RemoveCollisionObject(this);
}
}
// if (transform.localScale != Vector3.one)
// {
// Log.Warning("The local scale on this collision shape is not one. Bullet physics does not support scaling on a rigid body world transform. Instead alter the dimensions of the CollisionShape.");
// }
Unit Unit = this.GetParent <Unit>();
m_collisionShape = Unit.GetComponent <BCollisionShape>(); //必须用另一方式来赋值才行啊!!
if (m_collisionShape == null)
{
Log.Warning("There was no collision shape component attached to this BRigidBody. ");
return(false);
}
CollisionShape cs = m_collisionShape.GetCollisionShape;
//rigidbody is dynamic if and only if mass is non zero, otherwise static
if (m_collisionObject == null)
{
m_collisionObject = new CollisionObject();
m_collisionObject.CollisionShape = cs;
m_collisionObject.UserObject = this;
BulletSharp.Math.Matrix worldTrans;
BulletSharp.Math.Quaternion q = this.GetParent <Unit>().Quaternion.ToBullet();
BulletSharp.Math.Matrix.RotationQuaternion(ref q, out worldTrans);
worldTrans.Origin = this.GetParent <Unit>().Position.ToBullet();
m_collisionObject.WorldTransform = worldTrans;
m_collisionObject.CollisionFlags = m_collisionFlags;
}
else
{
m_collisionObject.CollisionShape = cs;
BulletSharp.Math.Matrix worldTrans;
BulletSharp.Math.Quaternion q = this.GetParent <Unit>().Quaternion.ToBullet();
BulletSharp.Math.Matrix.RotationQuaternion(ref q, out worldTrans);
worldTrans.Origin = this.GetParent <Unit>().Position.ToBullet();
m_collisionObject.WorldTransform = worldTrans;
m_collisionObject.CollisionFlags = m_collisionFlags;
}
return(true);
}
