unity C# 碰撞

Question

How do I create a script for collision detection between two object. Here is my code:

using UnityEngine;

public class PlayerCollision : MonoBehaviour
{
    public PlayerMovement movement;

    void OnCollisionEnter (Collision collisionInfo)
    {
        if (collisionInfo.collider.tag == "Obstacle")
        {
            movement.enabled = false;
        }
    }
}

Answer 1

Judging by https://docs.unity3d.com/ScriptReference/Collider.OnCollisionEnter.html , there's nothing wrong with the code that you've written.

A common reason that these method usages fail is because of the way you're handling movement (in this case) in your PlayerMovement script.

If you're modifying a transform's position directly through the position property for example, physics operations like collisions are not calculated. https://docs.unity3d.com/ScriptReference/Transform-position.html

Another common reason is that you don't have a rigidbody attached to one of the objects, so collision operations do not fire.

See the "Collision action matrix" section here: https://docs.unity3d.com/Manual/CollidersOverview.html