void OnCollisionEnter2D(Collision2D col)
{
//The position and size of the collision objects
Vector2 colPos = col.gameObject.transform.position;
Vector2 colSize = col.gameObject.GetComponent <BoxCollider2D>().size *col.gameObject.transform.localScale;
//If the ball hit the top or bottom of the object, flip the y velocity. Otherwise, flip the x velocity
if (pos.y + size.y / 2 <= colPos.y - colSize.y / 2 || pos.y - size.y / 2 >= colPos.y + colSize.y / 2)
{
if (pos.x + size.x / 2 >= colPos.x - colSize.x / 2 && pos.x - size.x / 2 <= colPos.x + colSize.x / 2)
{
vel.y *= -1.05f;
}
else
{
vel.x *= -1.05f;
}
}
else
{
vel.x *= -1.05f;
}
Color colour = col.gameObject.GetComponent <SpriteRenderer>().color; //Get the colour of the collision object
GetComponent <SpriteRenderer>().color = colour; //Set the ball colour to the colour of the collision object
trail.startColor = colour; //Set the trail colour
GameManager.instance.PlayHitParticles(col.transform.position, this.transform.position, colour); //Play the hit particles
StartCoroutine(camController.Shake(0.1f)); //Shake the camera
if (col.gameObject.name.Contains("Paddle")) //If the ball hit a paddle
{
PaddleController paddleController = col.gameObject.GetComponent <PaddleController>(); //Get the paddle controller
if (paddleController != null) //Make the ball move up or down depending on if the paddle had a positive or negative velocity
{
if (paddleController.GetVelocity().y > 0)
{
vel.y = Mathf.Abs(vel.y);
}
else if (paddleController.GetVelocity().y < 0)
{
vel.y = Mathf.Abs(vel.y) * -1;
}
}
}
}
private void AddPaddleVelocityToBall(PaddleController paddle)
{
float xVelocity = rigidbody2D.velocity.x;
float yVelocity = paddle.GetVelocity().y;
/*
* Make sure to explain normalisation of vectors
* This is to ensure that ball only ever has a speed based on speed we set in our variable
*/
Vector3 newVelocity = new Vector3(xVelocity, yVelocity);
newVelocity = newVelocity.normalized;
newVelocity *= speed;
rigidbody2D.velocity = newVelocity;
}