Why is my Player sliding in one direction?

Question

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;
     }
     //---------------------------------------------------------------------

Answer 1

Answer by alwayscodeangry · Feb 23, 2020 at 12:45 AM

The problem here is on line 27:

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

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.

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);

Hopefully this will give you the desired behaviour or at least get you on the right track :)

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.

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ZeroIQ_Scripter · Feb 23, 2020 at 10:44 AM 0

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Yes i want to addforce to forward. but also in the last direction like in cod. So you press the slide button and then you slide in the last look rotation.

ZeroIQ_Scripter · Feb 23, 2020 at 12:41 PM 0

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@alwayscodeangry How can I get the last look rotation? Like I tried with Vectors and Quaternions and i still cant get it i made so many scripts and nothing works.

alwayscodeangry ZeroIQ_Scripter · Feb 23, 2020 at 02:21 PM 0

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I'm afraid I don't know what you mean by 'last look rotation'. Could you clarify?

ZeroIQ_Scripter alwayscodeangry · Feb 23, 2020 at 02:33 PM 0

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@alwayscodeangry So lets say your y rotation is 20 and if you press shift to slide then you addforce to 20(the y rotation) and while you are sliding you can look everywhere but still sliding to the rotation of 20. but only y rotation (left and right).

Why is my Player sliding in one direction?

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