I don't understand the problem

Unity Engine
,
1

CS1503 Argument 3: cannot convert from ‘UnityEngine.RaycastHit2D’ to ‘float’

CS0165 Use of unassigned local variable ‘Hit’

CS1615 Argument 3 may not be passed with the ‘out’ keyword

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class S : MonoBehaviour
{
    private MeshRenderer TargetEnemy;

    private void Update()
    {
        RaycastHit hit;

        Physics2D.Raycast(transform.position, transform.right, out hit, 5);
    }
    private void OnDrawGizmos()
    {
        Gizmos.color = Color.yellow;
        Gizmos.DrawRay(transform.position, transform.right * 5);
    }
}
2

There are no “out” parameters in Physics2D.Raycast. It seems like you may be confusing it with the 3D version. Please review the correct usage of the function in the documentation:

1 Like
3

How To Use This Code In 2D ?

4

I think the scripting page for this in the docs is pretty self explanatory.

https://docs.unity3d.com/ScriptReference/Physics2D.Raycast.html

As PraetorBlue has stated above, there is no parameter for “out”.

Rather than passing the value in the method with out. It returns a RaycastHit2D. So if you want to capture that and use it you’ll need to assign the return value to a variable.

Just take your hit variable add 2D to the end of it and assign the return value from the raycast call to the variable.

RaycastHit2D hit = Physics2D.Raycast( arguments );

The first error you are getting is due to passing the raycast where the method is expecting a float argument.

The second is due to passing an unassigned variable as an argument. It’s unassigned and out is not a parameter here, thus you are passing an argument that is unassigned.

The third is due to the fact that Unity has probably seen this happen a lot between mixing parameters and calls for 2d & 3d APIs so they added custom exceptions to be thrown to help people debug for mixing up 2d and 3d APIs.

Hope that helps.