public List <GridObject2D> GetObjectsInMyZone(GridObject2D obj)
{
List <Vector2> registeredZones = new List <Vector2>();
List <GridObject2D> objList = new List <GridObject2D>();
if (objectRegisteredZones.ContainsKey(obj))
{
registeredZones = objectRegisteredZones[obj];
}
if (registeredZones.Count > 0)
{
for (int z = 0; z < registeredZones.Count; z++)
{
for (int o = 0; o < gridObjects[registeredZones[z]].Count; o++)
{
if (gridObjects[registeredZones[z]][o] != obj)
{
if (!objList.Contains(gridObjects[registeredZones[z]][o]))
{
objList.Add(gridObjects[registeredZones[z]][o]);
}
}
}
}
}
return(objList);
}
private Vector2 GetGridRef(GridObject2D obj)
{
Vector2 gridRef = Vector2.Zero;
for (int x = 0; x < gridDimensions.X; x++)
{
for (int y = 0; y < gridDimensions.Y; y++)
{
Vector2 checkRef = new Vector2(x, y);
if (theGrid[checkRef].Intersects(obj.Bounds))
{
return(checkRef);
}
}
}
return(gridRef);
}
public void AddObject(GridObject2D obj)
{
listObjects.Add(obj);
objectRegisteredZones.Add(obj, new List <Vector2>());
RegisterObject(obj);
}
private void RegisterObject(GridObject2D obj)
{
bool registered = false;
Vector2 gridRef = Vector2.Zero;
List <GridObject2D> objList;
// Get my zones.
List <Vector2> registeredZones = new List <Vector2>();
if (objectRegisteredZones.ContainsKey(obj))
{
registeredZones = objectRegisteredZones[obj];
}
// Am I already registered?
if (registeredZones.Count == 0)
{
gridRef = GetGridRef(obj);
registered = false;
}
else
{
registered = true;
}
// If not then find my initial place in the grid..
if (!registered)
{
// Register with this grid ref.
objList = gridObjects[gridRef];
objList.Add(obj);
gridObjects[gridRef] = objList;
registeredZones.Add(gridRef);
objectRegisteredZones[obj] = registeredZones;
}
else // If so, then am I still in these zones?
{
for (int r = 0; r < registeredZones.Count; r++)
{
if (!theGrid[registeredZones[r]].Intersects(obj.Bounds))
{
// Remove from this ref
// Remove me from the object list in the ref.
objList = gridObjects[registeredZones[r]];
objList.Remove(obj);
gridObjects[registeredZones[r]] = objList;
// Remove my registration with this ref.
registeredZones.Remove(registeredZones[r]);
objectRegisteredZones[obj] = registeredZones;
}
}
}
// Am I also in neigbouring zones?
for (int r = 0; r < objectRegisteredZones[obj].Count; r++)
{
gridRef = objectRegisteredZones[obj][r];
for (int x = (int)gridRef.X - 1; x < gridRef.X + 2; x++)
{
for (int y = (int)gridRef.Y - 1; y < gridRef.Y + 2; y++)
{
if (x >= 0 && x < gridDimensions.X && y >= 0 && y < gridDimensions.Y)
{
Vector2 thisRef = new Vector2(x, y);
if (!registeredZones.Contains(thisRef))
{
if (theGrid[thisRef].Intersects(obj.Bounds))
{
// Register with this grid ref.
objList = gridObjects[thisRef];
objList.Add(obj);
gridObjects[thisRef] = objList;
registeredZones.Add(thisRef);
objectRegisteredZones[obj] = registeredZones;
}
}
}
}
}
}
}