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In the game, there is a ball, and moving objects that can hit it. I want the ball to move when an object hits it. But the ball should move to the right direction, the one which the collision was from. I looked for some answers on the internet, however, most codes were in Java script, and those that were in C# weren't helpful because it needed a Rigidbody. The ball is a rigidbody, but the objects that may hit it, aren't. Those are being moved by the CharacterController. The question is how can I detect the collision, to know from what direction it came, and move it to that direction. Thank you.

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Use rigidbody.AddForce instead of transform.Translate so that the collisions are detected. For the direction create a variable with the difference between the target and the object itself and then normalize to find out the direction.

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  • \$\begingroup\$ Also, using transform.Translate() on a Rigibody can slow down your game. It's generally not considered good practice. \$\endgroup\$ – Nick B. Aug 6 '15 at 20:32
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I think a normalized vector from the ball to the object.

direction = (ball.transform.position - kicker.transform.position).normalized;

I made a game doing kind of this thing you are doing. (source code link in the post) http://luigigarcia.byethost7.com/projects/goal-a-r-goal/

I think that your kicking object must do this work, not the ball. You need to know the ball someway:

  • reference set in some component;
  • through the OnCollision MonoBehaviour methods;
  • etc..

You apply the direction with something like this:

  ball.theRigidbody.AddForce(direction * powerValue);
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  • \$\begingroup\$ Thank you @Luigi Garcia But I have a different script for the ball, so how can I get the position of the kicking object? and if I want the ball to move to that direction, how do I use the variable "direction" to do that? \$\endgroup\$ – ErezProductions Aug 5 '15 at 2:38
  • \$\begingroup\$ I think that your kicking object must do this work, not the ball. You need to know the ball someway: - reference set in some component; - through the OnCollision MonoBehaviour methods; - etc.. You apply the direction with something like this: ball.theRigidbody.AddForce(direction * powerValue); \$\endgroup\$ – Luigi Garcia Aug 5 '15 at 3:03
  • \$\begingroup\$ Can I reference the ball with a rigidbody inside the moving object's script(while it is being moved by the characterController)? \$\endgroup\$ – ErezProductions Aug 5 '15 at 10:31

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