public override void DidSimulatePhysics()
{
base.DidSimulatePhysics();
// Get the position either of the default hero or the hero spawn point.
HeroCharacter defaultHero = DefaultPlayer.Hero;
CGPoint position;
if (defaultHero != null && Heroes.Contains(defaultHero))
{
position = defaultHero.Position;
}
else
{
position = DefaultSpawnCGPoint;
}
// Update the alphas of any trees that are near the hero (center of the camera) and therefore visible or soon to be visible.
foreach (Tree tree in trees)
{
if (GraphicsUtilities.DistanceBetweenCGPoints(tree.Position, position) < 1024)
{
tree.UpdateAlphaWithScene(this);
}
}
if (!WorldMovedForUpdate)
{
return;
}
// Show any nearby hidden particle systems and hide those that are too far away to be seen.
foreach (SKEmitterNode particles in particleSystems)
{
bool particlesAreVisible = GraphicsUtilities.DistanceBetweenCGPoints(particles.Position, position) < 1024;
if (!particlesAreVisible && !particles.Paused)
{
particles.Paused = true;
}
else if (particlesAreVisible && particles.Paused)
{
particles.Paused = false;
}
}
// Update nearby parallax sprites.
foreach (ParallaxSprite sprite in parallaxSprites)
{
if (GraphicsUtilities.DistanceBetweenCGPoints(sprite.Position, position) >= 1024)
{
continue;
}
sprite.UpdateOffset();
}
}
public bool ContainsHero(Hero hero)
{
return(Heroes.Contains(hero));
}
