2D-Plattformer-Example/Assets/Scripts/PlayerMovement.cs

using UnityEngine;
using UnityEngine.InputSystem;

public class PlayerMovement : MonoBehaviour
{
    // Start is called once before the first execution of Update after the MonoBehaviour is created
    [SerializeField] private float speed = 10f;
    [SerializeField] private float jumpPower = 1.4f;

    
    private float wallJumpX = 1500; //Horizontal wall jump force
    private float wallJumpY = 750; //Vertical wall jump force

    [Header("Wallmovement")]
    [SerializeField] private float coyoteTime; //How much time the player can hang in the air before jumping
    private float coyoteCounter; //How much time passed since the player ran off the edge

    public float wallSlideSpeed = 2;
    public Vector2 wallJumpPower = new Vector2(10f, 10f);
    public Vector2 wallClimbPower = new Vector2(5f, 10f);

    [Header("Layers")]
    [SerializeField] private LayerMask groundLayer;
    [SerializeField] private LayerMask wallLayer;

    private Rigidbody2D body;
    private Animator animator;
    private BoxCollider2D boxCollider2D;
    //private bool grounded;
    private Vector2 moveInput;
    private float wallJumpCooldown;

    //Wall Jumping
    //bool isWallJumping;
    //float wallJumpDirection;
    //float wallJumpTime = 0.5f;
    //float wallJumpTimer; 

    //private float wallJumpLockTime = 0.15f;
    //private float wallJumpLockCounter;


    private void Awake()
    {
        
    }

    void Start()
    {
        body = GetComponent<Rigidbody2D>();
        animator = GetComponent<Animator>();
        boxCollider2D = GetComponent<BoxCollider2D>();
    }


    private void Update()
    {
        
    }

    // Update is called once per frame
    private void FixedUpdate()
    {
        float horizontalInput = moveInput.x;
        //body.linearVelocity = new Vector2(moveInput.x * speed, body.linearVelocityY);

        //Flip player right/left movement
        if (horizontalInput > 0.01f)
        {
            transform.localScale = Vector3.one;
        } else if (horizontalInput < -0.01f)
        {
            transform.localScale = new Vector3(-1, 1, 1);
        }

        if (OnWall())
        {
            if (moveInput.x != 0)
            {
                //body.gravityScale = 0;
                //body.linearVelocity = Vector2.zero;
                WallSlide();
            }
             
        } 
        else
        {
            //body.gravityScale = 7;
            if (moveInput.x != 0)
                body.linearVelocity = new Vector2(horizontalInput * speed, body.linearVelocity.y);
            //else
            //{
            //    body.linearVelocity = new Vector2(horizontalInput * speed, body.linearVelocity.y);
            //}
            if (IsGrounded())
            {
                coyoteCounter = coyoteTime; //Reset coyote counter when on the ground
                body.linearVelocity = new Vector2(moveInput.x * speed, body.linearVelocityY);
            }

            else
                coyoteCounter -= Time.deltaTime; //Start decreasing coyote counter when not on the ground
        }
        
        

        //Set abunatir parameters
        animator.SetBool("run", horizontalInput != 0);
        animator.SetBool("grounded", IsGrounded());
    }





    public void Jump(InputAction.CallbackContext callback)
    {
        if (coyoteCounter <= 0 && !OnWall() ) return;
        //Debug.Log($"Jumping {callback.performed} - Is Grounded {IsGrounded()}");
        //if (callback.performed && IsGrounded())
        if (callback.performed)
        {
            if (OnWall() && !IsGrounded())
            {
                if (moveInput.x == 0)
                {
                    WallJump();
                } else
                {
                    WallClimb();
                }
                
            }
            else 
            {
                if (IsGrounded())
                {
                    Debug.Log("We are supposed to jump");
                    body.linearVelocity = new Vector2(body.linearVelocityX, speed * jumpPower);
                    animator.SetTrigger("jump");
                }
                else
                {
                    if (coyoteCounter > 0)
                        body.linearVelocity = new Vector2(body.linearVelocity.x, jumpPower);
                }

                //Reset coyote counter to 0 to avoid double jumps
                coyoteCounter = 0;

            }

                
        }
    }

    public void Move(InputAction.CallbackContext callback)
    {
        moveInput = callback.ReadValue<Vector2>();
        //Debug.Log("Move Input " + moveInput);    
    }

    private void OnCollisionEnter2D(Collision2D collision)
    {
        //if(collision.gameObject.tag == "Ground")
        //{
        //    grounded = true;
        //}
    }

    private void WallSlide()
    {
        //if (OnWall() )
        //{
        //    body.linearVelocity = new Vector2(body.linearVelocityX, Mathf.Max(body.linearVelocity.y, -wallSlideSpeed));

        //}
        Debug.Log("Wallsliding");

        body.linearVelocity = new Vector2(body.linearVelocityX, Mathf.Max(body.linearVelocity.y, -wallSlideSpeed));
    }

    private void WallJump()
    {
        //Climb
        //body.AddForce(new Vector2(-Mathf.Sign(transform.localScale.x) * wallJumpX, wallJumpY), ForceMode2D.Impulse);
        Debug.Log("WallJump");
        //Jump
        body.linearVelocity = new Vector2(-Mathf.Sign(transform.localScale.x) * wallJumpPower.x, wallJumpPower.y);
        wallJumpCooldown = 0;
    }

    private void WallClimb()
    {
        //Climb
        //body.AddForce(new Vector2(-Mathf.Sign(transform.localScale.x) * wallJumpX, wallJumpY));
        Debug.Log("WallClimb");
        //Jump
        body.linearVelocity = new Vector2(-Mathf.Sign(transform.localScale.x) * wallClimbPower.x, wallClimbPower.y);
        wallJumpCooldown = 0;
    }

    private bool IsGrounded() 
    {
        RaycastHit2D hit = Physics2D.BoxCast(boxCollider2D.bounds.center, boxCollider2D.bounds.size, 0, Vector2.down, 0.1f, groundLayer);
        return hit.collider != null;
    }

    private bool OnWall()
    {
        
        RaycastHit2D raycastHit = Physics2D.BoxCast(boxCollider2D.bounds.center, boxCollider2D.bounds.size, 0, new Vector2(transform.localScale.x, 0), 0.1f, wallLayer);
        return raycastHit.collider != null;
    }
}