Invert a Circle Collider 2D

[Bill-Boy17]

Hello,

-On Unity 2D i have a Circle Collider 2D. The thing is I want to invert the surface of collider ( for exemple I want that my character run inside a circle NOT outside like the surface of a planet).

-The Problems is that my character is push-out the collider when i press play because i can’t and I don’t
know how can i invert it.

-I use Play maker for the script.

Thank you.

[Icaro-DLima]

I had created this script that is an enhancement of the previous mentioned:

using UnityEngine;

[RequireComponent(typeof(EdgeCollider2D))]
public class InvertedCircleCollider2D : MonoBehaviour
{
    public float Radius;

    [Range(2, 100)]
    public int NumEdges;

    private void Start()
    {
        Generate();
    }

    private void OnValidate()
    {
        Generate();
    }

    private void Generate()
    {
        EdgeCollider2D edgeCollider2D = GetComponent<EdgeCollider2D>();
        Vector2[] points = new Vector2[NumEdges + 1];

        for (int i = 0; i < NumEdges; i++)
        {
            float angle = 2 * Mathf.PI * i / NumEdges;
            float x = Radius * Mathf.Cos(angle);
            float y = Radius * Mathf.Sin(angle);

            points *= new Vector2(x, y);*

}
points[NumEdges] = points[0];

edgeCollider2D.points = points;
}
}
You can change the values and see the results in realtime.

[Talonj123]

I don’t know what Play Maker is, but if you add an edge collider to the circle (or an empty object) and add the following script.

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

public class InitInverted2DEdges : MonoBehaviour {

    public int NumEdges;
    public float Radius;

    // Use this for initialization
    void Start () {
        EdgeCollider2D edgeCollider = GetComponent<EdgeCollider2D>();
        Vector2[] points = new Vector2[NumEdges + 1];

        for (int i = 0; i < NumEdges; i++)
        {
            float angle = 2 * Mathf.PI * i / NumEdges;
            float x = Radius * Mathf.Cos(angle);
            float y = Radius * Mathf.Sin(angle);

            points *= new Vector2(x, y);*

}
points[NumEdges} = points[0];

edgeCollider.points = points;
}
}