//Clear all the nodes in the Quad-Tree
public void ClearAllNodes()
{
if (!nodeInserted)
{
return;
}
nodeInserted = false;
if (divided)
{
northEast.ClearAllNodes();
northWest.ClearAllNodes();
southEast.ClearAllNodes();
southWest.ClearAllNodes();
}
divided = false;
}
//Clear all the nodes in the Quad-Tree
public void ClearAllNodes()
{
if (numberOfNodesInserted == 0 && !root)
{
return;
}
numberOfNodesInserted = 0;
root = false;
if (divided)
{
northEast.ClearAllNodes();
northWest.ClearAllNodes();
southEast.ClearAllNodes();
southWest.ClearAllNodes();
}
divided = false;
}
void UpdateAsteroidsPosition()
{
// Clearing QuadTree nodes
if (updateQT)
{
quadTree.ClearAllNodes();
}
for (int i = 0; i < asteroidsData.Length; i++)
{
Asteroid asteroid = asteroidsData[i];
if (asteroid.isActive)
{
asteroid.UpdatePosition(Time.deltaTime);
//Displaying only objects which are visible to camera in the scene
bool isVisible = cameraController.IsVisible(asteroid.position.x, asteroid.position.y);
bool alreadyShowing = visibleAsteroids.ContainsKey(i);
if (isVisible && !alreadyShowing)
{
StartCoroutine(SpawnAsteroid(i));
}
else if (!isVisible && alreadyShowing)
{
HideAsteroid(i);
}
if (updateQT)
{
quadTree.Insert(asteroid.position.x, asteroid.position.y, asteroidRadius, i);
}
}
}
if (updateQT)
{
CheckAsteroidsCollision();
}
}