private Collision GetCollision(Vector2 closestPoint)
{
Collision collision;
var ballInsidePaddle = boxCollider.bounds.Contains(ballTransform.position);
if (ballInsidePaddle)
{
collision = new Collision
{
BallPosition = previousBallPosition,
Point = previousClosestPoint,
GameObject = gameObject
};
}
else
{
collision = new Collision
{
BallPosition = ballTransform.position,
Point = closestPoint,
GameObject = gameObject
};
}
return(collision);
}
private static Vector2 CalculateNormalVector(Collision collision, Vector2 moveDirection)
{
var normalVector = (collision.Point - collision.BallPosition).normalized;
if (Vector2.Dot(normalVector, moveDirection) < 0)
{
normalVector *= -1;
}
Debug.DrawLine(collision.Point - normalVector, collision.Point, Color.blue);
return(normalVector);
}
public static Vector2 CalculateNewDirection(Collision collision, Vector2 moveDirection)
{
var normal = CalculateNormalVector(collision, moveDirection);
var oppositeMoveDirection = -moveDirection;
var cosine = Vector2.Dot(normal, oppositeMoveDirection);
var reducedNormal = normal * cosine;
var verticalVector = reducedNormal - oppositeMoveDirection;
var impulse = verticalVector * 2;
return(oppositeMoveDirection + impulse);
}
