3D character controller get stuck when jumping on walls

I tried to make an FPS character controller script,
but for some reason when the player walk toward a wall and trying to jump on it at the same time, he get stuck, flickering up and down and then falls back to the ground.

my playerController script:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class playerController : MonoBehaviour
6. {
7.     public float playerSpeed;
8.     public float gravity;
9.     public float mouseSensitivity;
10.     public float jumpHight;
11.  
12.     private CharacterController playerCC;
13.     private Camera playerCamera;
14.     private Vector3 velocity;
15.     private Vector3 move;
16.     private float xRotation;
17.  
18.     // Start is called before the first frame update
19.     void Start()
20.     {
21.         playerCC = GetComponent<CharacterController>();
22.         playerCamera = transform.GetChild(0).GetComponent<Camera>();
23.         Cursor.lockState = CursorLockMode.Locked;
24.     }
25.  
26.     // Update is called once per frame
27.     void Update()
28.     {
29.         //StickToGround
30.         if (playerCC.isGrounded)
31.         {
32.             if(velocity.y < 0)
33.             {
34.                 velocity.y = -2f;
35.             }
36.          
37.         }
38.         //Jumping
39.         if (Input.GetKeyDown(KeyCode.Space) && playerCC.isGrounded)
40.         {
41.             velocity.y = Mathf.Sqrt(jumpHight * -2f * gravity);
42.         }
43.         //Looking Around
44.         float mouseX = Input.GetAxis("Mouse X") * mouseSensitivity * Time.deltaTime;
45.         float mouseY = Input.GetAxis("Mouse Y") * mouseSensitivity * Time.deltaTime;
46.         xRotation -= mouseY;
47.         xRotation = Mathf.Clamp(xRotation, -90f, 90f);
48.         playerCamera.transform.localRotation = Quaternion.Euler(xRotation, 0f, 0f);
49.         transform.Rotate(Vector3.up * mouseX);
50.  
51.         //Moving
52.         float x = Input.GetAxisRaw("Horizontal") * playerSpeed * Time.deltaTime;
53.         float z = Input.GetAxisRaw("Vertical") * playerSpeed * Time.deltaTime;
54.         move = transform.right * x + transform.forward * z;
55.  
56.         if(x != 0 && z != 0) // Diagnale move
57.         {
58.             move *= 0.7071f;
59.         }
60.  
61.         playerCC.Move(move);
62.         velocity.y += gravity * Time.deltaTime;
63.         playerCC.Move(velocity * Time.deltaTime);
64.     }
65. }
66.  

also the player gameobject have a CharacterController component attached to it and also a Camera as a child.
Iv'e tried to set the wall physicsmaterial to 'slippery' and changing my script but none of it worked.

 

I found out that when I set the slope limit to 90 degrees it seems to fix the problem.

 

Still works 2020 Thanks! This was a pain! - I would still like to know how to set a smaller slope, but for now i think i'll stick with a 360 ray-trace scan to detect the slope around the players feet.

 

I'm not sure, I'm still learning Unity too. You could try to create an empty object, a tag, and a method.

Just put the Tag on the empty Obj. use the empty Obj. for your Objs. as a child and adjust the Slope with a script, a simple if loop.

Example.
GameObject -> Stairs.
EmptyObject -> child of Stairs(with "SmallerSlopeTag")(like a trigger)
Script -> if("your Collider is colliding with that trigger") { set Slope to 30f; } else { set Slope to 90f;}

Might be a lot of work but i think it will works, i dont know its just a theory, hope it will helps you.

 

Actual hero.

 

Thanks man, you saved me

 

Setting the step offset to 0 also fixes the problem. You can also just make the wall higher. If you want to have a step offset, you can do what Roberto1996 is saying, detect if you are colliding with a stair then set the step offset to something.

 

I have used the isGrounded variable from CharacterController to determine the slope.

Code (CSharp):

1. float originalSlopeLimit;
2.  
3. void Start()
4. {
5.    originalSlopeLimit = controller.slopeLimit;
6. }
7.  
8. void Update(){
9.     controller.slopeLimit = isGrounded ? originalSlopeLimit : 90f;
10. }