How can i make an object to change directions after hitting a wall?

Question

I have a 2d game where a ball goes from left to right. I want the ball to automatically change directions after hitting a wall but I can't find a way to do so. Ive try to use the on collision enter function but it is just not working. I just need to find a way to change a variable (the one that controls the direction) after the ball hits the wall. Everything is in 2d. The ball is a circle and the wall is a square. Both have collides and the ball has a rigidbody. Thanks in advance.

Answer 1

Best Answer

Answer by gustavim15 · Jun 25, 2016 at 03:13 PM

Hello @raaul.09.... This videos show's exactly what you want: Change direction Hitting Wall

Hope it helps you... :D

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raaul.09 · Jun 25, 2016 at 04:53 PM 0

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Thanks, that's what I needed

Answer 2

Answer by NitroGain · Jun 25, 2016 at 10:31 AM

This should work:

 void OnCollisionEnter2D(Collision2D col)
 {
 if(coll.gameObject.tag == "Wall")
 {
 MovementSpeed = -MovementSpeed;
 }
 }

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raaul.09 · Jun 25, 2016 at 04:53 PM 0

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Thank you!

INK_Champ · Jul 18, 2020 at 11:12 PM 0

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When I do this, it changes back (to positive) and gets stuck

How can i make an object to change directions after hitting a wall?

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