public void RaiseCollision(CollisionComponent other)
{
CollisionEventArgs args = new CollisionEventArgs
{
ThisComponent = this,
OtherComponent = other,
CollisionResolved = false
};
this.CollisionDetected?.Invoke(this, args);
other.CollisionDetected?.Invoke(other, args); // raise event for other entity
}
public void Update(GameTime gameTime)
{
_collidersToRemove.ForEach(e => _colliders.Remove(e));
_collidersToRemove.Clear();
for (int i = 0; i < _colliders.Count; i++)
{
CollisionComponent a = _colliders[i];
// collisions for a a->b might trigger b to be destroyed (e.g. Shot vs Asteroid)
// when b->c is evaluated, b might be destroyed and this can't possibly collide with c
if (!a.IsActive || a.Entity == null || a.Entity.IsDestroyed)
{
continue; // next iteration of I loop
}
for (int j = i + 1; j < _colliders.Count; j++)
{
CollisionComponent b = _colliders[j];
if (!a.IsActive || a.Entity == null || a.Entity.IsDestroyed)
{
break;
}
else if (!b.IsActive || b.Entity == null || b.Entity.IsDestroyed)
{
continue; // next iteration of J loop
}
// Check for collision
if (Collides(a.Geometry, b.Geometry))
{
// todo: handle game specific logic??
a.RaiseCollision(b);
}
}
}
}
public CreatedCollisionComponentArgs(CollisionComponent component)
{
this.Component = component;
}
public void RemoveEntity(CollisionComponent e) => _collidersToRemove.Add(e);
public void AddEntity(CollisionComponent e) => _colliders.Add(e);
