Paddle and screen width collision?

Unity Engine
1

Hi. I want to know how to have a simple collision between the screen and my paddle. I am making a simple pong game. I dont want to use extra cube to put on each side of the screen. I mean just like in any other open source engine like xna.

It should be something like this

if(paddle.position.x > Screen.width){
// collision detected
}

Usually thats how it is made in xna because the origin is on the top left. In unity though im not sure. origin is on center now when i tried to track my x position compared to screen width its shows something like this

1518754--86709--$144a72s.jpg
1518754--86709--$144a72s.jpg845×601 44.8 KB

and this is my code

	void Update () {
		if(Input.GetKey(KeyCode.D)){
			this.transform.Translate(new Vector2(2,0f) * Time.deltaTime);
			Debug.Log("paddle position X:  " + this.transform.position.x + ",   Screen width:  " + Screen.width / 2);
			if(this.transform.position.x > Screen.width / 2){

			}
		}
	}

I even divide it by 4 since it starts at center but still the width is far greater even though the paddle reach the end of the screen width.

I havent added the paddle width yet but it should be close enough.

So ah can someone help me about here? the most basic simple collision thing?

2

If you’re using physics then you should never use transform.translate ! Instead use addForce or Velocity. Otherwise you will have problems with collision detection. Furthermore, I highly advise you to put objects on the sides of the screen for the paddle to collide with and thus stop at. This is way better from a performance perspective than you trying to detect the location of the paddle at every update several times per second.

3

I see… Thank you