struggling to get Raycast2D to work

Unity Engine
1

Unfortunately, this is my first time using raycasts, so, I’m still pretty new to how they work, I’m currently trying to make a turn based dungeon game, and due to that, I can’t use a normal physics script to detect collision, so right now I’m trying to use raycasts to do it, although, when I press play, the console just spams the debug message “hitting stuff”, even though the player is facing away from the colliders in my scene (my player does not have a collider attached to them btw) and I can’t figure out what’s going wrong, here’s my script

using UnityEngine;

public class PlayerMovement : MonoBehaviour
{
    [Header("Either supply or we GetComponent<T>();")]
    public Transform PlayerTransform;

    public Animator animator;

    Vector3 currentPosition;
    Vector3 desiredPosition;

    float CellSize = 1.0f;
    float MoveSpeed = 5.0f;

    void Start()
    {
        if (!PlayerTransform)
        {
            PlayerTransform = transform;
        }
    }

    bool Moving()
    {
        Ray2D rayForward = new Ray2D(PlayerTransform.position, PlayerTransform.up);

        if (Physics2D.Raycast(rayForward.origin, rayForward.direction, 1.75f))
        {
            Debug.Log("Hitting Stuff");
        } else
        {
            Debug.Log("Not Hitting Stuff");

            // move
            currentPosition = Vector3.MoveTowards(currentPosition, desiredPosition, MoveSpeed * Time.deltaTime);
        }

        // done?
        Vector3 d = currentPosition - desiredPosition;
        return d.magnitude > 0.01f;
    }

    void DriveTransform()
    {
        PlayerTransform.position = currentPosition + new Vector3(18.46f, 12.53f, 0);
// if you're wondering, the arbitrary numbers above is just the spot I want my player to spawn
    }

    void ReadInput()
    {
        var x = Input.GetAxisRaw("Horizontal");
        var y = Input.GetAxisRaw("Vertical");

        animator.SetFloat("Horizontal", x);
        animator.SetFloat("Vertical", y);

        if (x != 0)
        {
            animator.SetFloat("animSpeed", 1);

        } else if (y != 0)
        {
            animator.SetFloat("animSpeed", 1);
        } else
        {
            animator.SetFloat("animSpeed", 0);
        }

        if (x < -0.5f)
        {
            desiredPosition += Vector3.left * CellSize;
            animator.SetFloat("HorizontalIdle", x);
            animator.SetFloat("VerticalIdle", y);
        }
        else if (x > 0.5f)
        {
            desiredPosition += Vector3.right * CellSize;
            animator.SetFloat("HorizontalIdle", x);
            animator.SetFloat("VerticalIdle", y);
        }
        else if (y > 0.5f)
        {
            desiredPosition += Vector3.up * CellSize;
            animator.SetFloat("HorizontalIdle", x);
            animator.SetFloat("VerticalIdle", y);
        }
        else if (y < -0.5f)
        {
            desiredPosition += Vector3.down * CellSize;
            animator.SetFloat("HorizontalIdle", x);
            animator.SetFloat("VerticalIdle", y);
        }
    }

    void Update()
    {
        if (!Moving())
        {
            ReadInput();
        }

        DriveTransform();
    }
}

right now, I just need the script to disable movement in the direction the player is facing if the next tile they would step on is a collider, I am aware I did not write any code that disables movement in a specific direction, but I wasn’t exactly sure how I should handle that with raycast code;

2

try printing out the gameobject name that it hits,
also add debug.drawline or drawray to visualize where the ray is going.

3

In your if statement you are not actually checking if anything was hit. Raycast() always returns a RaycastHit2D struct. You need to check the “collider” property of the returned struct.

There is an example in the docs:

4

Thanks

5

Thanks everyone!, I was able to get it working, and so far there isn’t any more wall clip glitches