public Controller(World world)
{
_bodyList = null;
_bodyCount = 0;
_world = world;
}
/// <summary>
/// Adds a body to the controller list.
/// </summary>
public void AddBody(Body body)
{
ControllerEdge edge = new ControllerEdge();
edge.body = body;
edge.controller = this;
//Add edge to controller list
edge.nextBody = _bodyList;
edge.prevBody = null;
if (_bodyList != null)
_bodyList.prevBody = edge;
_bodyList = edge;
++_bodyCount;
//Add edge to body list
edge.nextController = body._controllerList;
edge.prevController = null;
if (body._controllerList != null)
body._controllerList.prevController = edge;
body._controllerList = edge;
}
/// <summary>
/// Removes a body from the controller list.
/// </summary>
public void RemoveBody(Body body)
{
//Assert that the controller is not empty
Box2DXDebug.Assert(_bodyCount > 0);
//Find the corresponding edge
ControllerEdge edge = _bodyList;
while (edge != null && edge.body != body)
edge = edge.nextBody;
//Assert that we are removing a body that is currently attached to the controller
Box2DXDebug.Assert(edge != null);
//Remove edge from controller list
if (edge.prevBody != null)
edge.prevBody.nextBody = edge.nextBody;
if (edge.nextBody != null)
edge.nextBody.prevBody = edge.prevBody;
if (edge == _bodyList)
_bodyList = edge.nextBody;
--_bodyCount;
//Remove edge from body list
if (edge.prevController != null)
edge.prevController.nextController = edge.nextController;
if (edge.nextController != null)
edge.nextController.prevController = edge.prevController;
if (edge == body._controllerList)
body._controllerList = edge.nextController;
//Free the edge
edge = null;
}
public Controller()
{
_bodyList = null;
_bodyCount = 0;
}
/// <summary>
/// Removes all bodies from the controller list.
/// </summary>
public void Clear()
{
#warning "Check this"
ControllerEdge current = _bodyList;
while (current != null)
{
ControllerEdge edge = current;
//Remove edge from controller list
_bodyList = edge.nextBody;
//Remove edge from body list
if (edge.prevController != null)
edge.prevController.nextController = edge.nextController;
if (edge.nextController != null)
edge.nextController.prevController = edge.prevController;
if (edge == edge.body._controllerList)
edge.body._controllerList = edge.nextController;
//Free the edge
//m_world->m_blockAllocator.Free(edge, sizeof(b2ControllerEdge));
}
_bodyCount = 0;
}