private void OnCollisionEnter2D(Collision2D collision)
{
if (collision.collider.gameObject.tag == "PlayerGoal") // Ball collided with far left wall
{
enemyScore++; // increment enemy score
if (hasText) // update text fields
{
text.UpdateEnemyScore(enemyScore);
}
ResetBall(); // position the ball at the halfway point
audioManager.Play("enemyScore"); // play the enemyScore sound through the audio manager
}
else if (collision.collider.gameObject.tag == "EnemyGoal") // Ball collided with far right wall
{
playerScore++; // increment player score
if (hasText) // update text fields
{
text.UpdatePlayerScore(playerScore);
}
ResetBall(); // position the ball at the halfway point
audioManager.Play("playerScore"); // play the playerScore sound through the audio manager
}
else if (collision.collider.gameObject.tag != "Wall") // Ball collided with a paddle
{
float paddleWidth = collision.collider.bounds.size.y;
float collisionPoint = collision.contacts[0].point.y;
float paddlePos = collision.collider.bounds.center.y; // position of the centerpoint of the paddle
bool upwards;
if (paddlePos < collisionPoint) // if the ball hit below the middle of the paddle, it will reflect downwards
{
upwards = true;
}
else
{
upwards = false;
}
bool rightwards;
if (collision.collider.gameObject.tag == "PlayerPaddle") // if the ball hit the player's paddle, it will reflect rightwards
{
rightwards = true;
}
else
{
rightwards = false;
}
// if the ball hits the paddle in the center, it will reflect straight forward (0 degree angle)
// if the ball hits the paddle on the edges, it will reflect at 45 degrees
float angle = Mathf.Abs(paddlePos - collisionPoint) / (paddleWidth / 2.0f) * 45f; // 45 degrees is the max angle
angle *= Mathf.Deg2Rad; // convert it to radians
SetAngle(angle, upwards, rightwards); // set the velocity of the ball at a certain angle
}
}