Wall Jump Scripting Help

Questions & Answers
1

147100-2019-10-06-16-22-39-3.gifHi,
Im trying to make a simple fast paced 3D plat former to learn the basics of unity. I wish to implement a wall jump that is relative to the surface the player is standing on so i dont have to create many diffrent implementations of what the player is standing on. This is my script so far…

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

public class PlayerController : MonoBehaviour

{

    public float speed;
    public float jump = 20f;
    private Rigidbody rb;
    float timer = 0.0f;
    bool isGrounded = true;
   

    void Start()
    {
        rb = GetComponent<Rigidbody>();
    }

 


    private void Update()
    {
        bool player_jump = Input.GetButtonDown("Jump");

        if (player_jump && isGrounded)
        {
            rb.AddForce(Vector3.up * jump);
        }
    }




    void OnCollisionEnter(Collision collision)
    {
        if (collision.gameObject.CompareTag("Ground"))
        {
            isGrounded = true;            
        }
        if (collision.gameObject.CompareTag("Wall"))
        {
            isGrounded = true;
        }

    }




    void OnCollisionExit(Collision collision)
    {
        if (collision.gameObject.CompareTag("Ground"))
        {
            isGrounded = false;
        }
        if (collision.gameObject.CompareTag("Wall"))
        {
            isGrounded = false;
        }
    }

void FixedUpdate()
{
    float moveHorizontal = Input.GetAxis("Horizontal");
    float moveVertical = Input.GetAxis("Vertical");

    Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);

    rb.AddForce(movement * speed);
}

}

So, My player is a ball and i wish to have it able to wall jump off of a wall. For now it jumps only up and i want to be able to grate a jump that applies a force off the wall. Like in Mario. So how do i create a wall jump that is relative to the surface that the player is standing on?

2

hello there, i was asking about this from 2 days too no one replied, now what i did in my project that i used OnCollisionEnter and add two force one in the direction of wall normal and one in the upward direction it worked, but it has some bugs too since no one replying about wall jumping i thought i should tell you what solution in found

NOTE IT IS NOT PREFECT HAS BUGS

 void OnCollisionEnter(Collision collision)
        {
            foreach (ContactPoint contact in collision.contacts)
            {
                if (!IsGrounded && contact.normal.y < 0.1f)
                {
                    Debug.DrawRay(contact.point, contact.normal, Color.yellow, 5f);
                    if (walljump == true)
                    {
                        characterControl.RIGIDBODY.AddForce(contact.normal * 6f, ForceMode.Impulse);
                        characterControl.RIGIDBODY.AddForce(Vector3.up * 3f, ForceMode.Impulse);
                    }
                }
            }
        }
3

Hello Liraseth! I was having similar problems with wall jumping. I at first tried using raycasting to determine the hit point, but when that didn’t work, I reverted to a much simpler method. This is for character controllers, though.

private void OnControllerColliderHit(ControllerColliderHit hit)
{
if(!controller.isGrounded && controller.collisionFlags == CollisionFlags.Sides && Input.GetKey(KeyCode.Space))
{
(your move vector).y = jumpForce;
transform.rotation = Quaternion.Euler(0f, transform.rotation.eulerAngles.y + 180f, 0f);
float getYRotation = transform.rotation.eulerAngles.y;
transform.position += transform.forward * Time.deltaTime * (your move speed);
lockMove = true;
}

This method makes the player turn around 180 degrees, so it works even if you hit the wall at a diagonal angle. for the “lock move” bool, only allow your player to rotate if lock move is false, and then set it to false when grounded.

The way this works it that when the player does a wall jump, they will flip around and stay in that direction, and trying to move the player back toward the wall will just move them further away. if you need to get the player’s y rotation, the float variable in there can track it. I really hope this works for you and is compatible with your script!