Destroy object when it touch Ground unity 2d-CodePudding

Hey I just want my bullet to destroy itself when it touch Ground
i tried to destroy after 2 seconds but it has the same problem
That's My Code

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

public class EnemyBullet : MonoBehaviour
{
    GameObject target;
    public float speed;
    Rigidbody2D bulletRB;

    void Start()
    {
        bulletRB = GetComponent<Rigidbody2D>();
        target = GameObject.FindGameObjectWithTag("Player");
        Vector2 moveDir = (target.transform.position - transform.position).normalized * speed;
        bulletRB.velocity = new Vector2(moveDir.x, moveDir.y);
        Destroy(this.gameObject, 2);
    }

    
}

CodePudding user response：

Destroy the bullet object using the Destroy method.The bullet is destroyed after flying a certain distance.

 public float speed;
 public float destoryDistance;
 private Rigidbody2D rg2d;
 private Vector3 startPos;
 // Start is called before the first frame update
 void Start()
 {
     rg2d = GetComponent<Rigidbody2D>();
     rg2d.velocity = transform.right * speed;
     startPos = transform.position;
 }

 // Update is called once per frame
 void Update()
 {
     float distance = (transform.position - startPos).sqrMagnitude;
     if (distance > destoryDistance)
     {
         Destroy(gameObject);
     }
 }

CodePudding user response：

Use OnCollisionEnter() to destroy to bullet

void OnCollisionEnter(Collision collider)
{
    if (collider.GameObject.tag == "Ground")
    {
        Destroy (this.GameObject)
    }
}

What's happening here is that this function gets called every time it collides with an object, so we put the destroy code here. It takes the collider as a parameter, and then checks if the GameObject has the tag "Ground", and if it does, destroy itself.

Note that you will also have to add a tag to your ground objects in the hiearchy. You can name them anything else too, but make sure to change "Ground" in the code when you do set the tag to anything other than it.

You will probably also have other colliders like walls in your game so you should make a universal tag that destroys bullets and name it something like "Destroy Projectiles" or something.

Edit: You can have multiple functions that destroy the GameObject.