public virtual void OnCollideWith <TCollidable>(ICollidable target, CollisionMoment collisionMoment, ICollisionContainer container)
where TCollidable : class, ICollidable
{
var self = this as TCollidable;
if (self == null)
{
return;
}
var collisionTarget = target as ICollidable <TCollidable>;
collisionTarget?.OnCollideWith(self, collisionMoment, container);
}
/// <summary>
/// Applies the given collision moment to the current collidable's movement vectors.
/// This method adjusts position, velocity, and acceleration for the current update
/// cycle according to the collision edges and time alpha value reported by the given
/// collision information.
/// </summary>
/// <param name="collisionMoment">Collision moment.</param>
protected void ApplyToMovement(CollisionMoment collisionMoment)
{
var modifier = Vector2.One;
if (collisionMoment.ThisEdge.IsTop() || collisionMoment.ThisEdge.IsBottom())
{
modifier = new Vector2(modifier.X, collisionMoment.TimeAlpha);
}
else if (collisionMoment.ThisEdge.IsLeft() || collisionMoment.ThisEdge.IsRight())
{
modifier = new Vector2(collisionMoment.TimeAlpha, modifier.Y);
}
this.Acceleration *= modifier;
this.Velocity *= modifier;
this.Position += Vector2.Negate(this.Velocity * (Vector2.One - modifier));
}
public CollisionEventArgs(ICollidable entityOne, ICollidable entityTwo, CollisionMoment moment)
{
this.EntityOne = entityOne;
this.EntityTwo = entityTwo;
this.CollisionMoment = moment;
}
public abstract void OnCollideWith(ICollidable target, CollisionMoment collisionMoment, ICollisionContainer container);
