How to stop applying force when button is not pressed anymore

Questions & Answers
1

I’m kinda new to Unity, and programming in general. Am trying to make object go in all directions, and it works. The problem is next: when button is not pressed anymore, object will still move in wanted direction, with same amount of force.

I tried using applyStopForce(); which caused error, tried setting velocity and/or force to 0 on GetKeyUp etc.

	void FixedUpdate ()
	{

		if (Input.GetKey(KeyCode.W)) {
			rigidbody2D.AddForce(Vector2.up * forceConstant);
		} else if (Input.GetKey(KeyCode.S)) {
			rigidbody2D.AddForce(Vector2.up * -forceConstant);
		}		        

		if(Input.GetKey(KeyCode.A)){
			rigidbody2D.AddForce(Vector2.right * -forceConstant);
		}else if(Input.GetKey(KeyCode.D)){
			rigidbody2D.AddForce(Vector2.right * forceConstant);
		}


	}
2

Hallo,

I use:
rigidbody.Sleep();
to set force to 0.

Wondermike

3

You could put the Sleep function when the input key is held up. Like this:

if(Input.GetKeyUp(KeyCode.W))
{
    rigidbody.Sleep();
}