Why is my Player sliding in one direction?

Questions & Answers
1

So if I press left shift then my Player slides to one direction. but if I look all up then it goes to x and when i look all the way down then it goes to z axis. Any ideas why?

Script:

	if (Input.GetKey (KeyCode.LeftShift)) {
		canSlide = true;
		GotTheLastLook = true;
	}

	if (GotTheLastLook) {
		f = fpsCam.localRotation.x;
		GotTheLastLook = false;
	}

	if (canSlide) {
		SlideKeyPressed = true;
		Sliding = true;
		canSlide = true;
	}
		
	if (SlideKeyPressed) {
		SlidingTime -= Time.deltaTime;
	}
		
	if (Sliding) {
		transform.localScale = new Vector3 (1, slidingScale, 1);
		canSlide = false;
	}
		
	if (SlidingTime <= 0.9f) {
		rb.AddForce (new Vector3(0, 0, f * Time.deltaTime * slidingSpeed));
		WalkingAllowed = false;
	}

	if (SlidingTime <= 0f) {
		transform.localScale = new Vector3 (1, normalScale, 1);
		SlidingTime = 1.0f;
		Sliding = false;
		SlideKeyPressed = false;
		canSlide = false;
		if (rb.velocity.magnitude > .01) {
			rb.velocity = Vector3.zero;
		}
	}

	if (SlidingTime >= 1) {
		WalkingAllowed = true;
	}
	//---------------------------------------------------------------------
2

The problem here is on line 27:

rb.AddForce (new Vector3(0, 0, f * Time.deltaTime * slidingSpeed));

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What’s happening here is that AddForce is applying a force of some magnitude along the global z-axis (so the world forwards / backwards). This is why it appears to be correct when facing certain directions. The ‘f’ variable is also a problem as it’s being set based on the tranform’s x-rotation (i.e. the camera’s pitch (or up / down rotation) in the case of the FPS camera). I’d just get rid of it completely.
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What I think you actually want to do is apply the force along the camera’s local axis. You can get this from the camera’s transform like so:

rb.AddForce(fpsCam.transform.forward * Time.deltaTime * slidingSpeed);

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Hopefully this will give you the desired behaviour or at least get you on the right track :slight_smile:
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Note: I’m assuming it’s the z-axis you want to move along. You can change to ‘right’ for the x-axis or even ‘up’ for the y-axis.