How to make one object move to another object by tag?

Hello sir. I'm a newbie and sorry if this is a stupid question.

For example, I need missile move to an enemy with a tag called "Enemy", so now, how can I write a concept of creating object A that can detect object B (with object B tag) and move to it.

Thank you.

 

There are a multitude of ways to do this, the specifics of which depends on your game. Should missiles target any enemy at random? Or try to find the ones closest along its path? Do they have to be within a certain range? If the missile passes the target, does it turn around or try to acquire a new target? The more complex the logic, the more robust the code will need to be.

With that said, to simply get the a random enemy and move a missile towards them when spawned, start with something like this:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class SimpleMissile : MonoBehaviour {
6.     public float missileSpeed = 5f;
7.     private GameObject[] enemies;
8.     private Transform targetedEnemy;
9.  
10.     void Awake () {
11.         enemies = GameObject.FindGameObjectsWithTag ("Enemy");
12.         targetedEnemy = enemies[Random.Range (0, enemies.length)].transform;
13.     }
14.  
15.     void Update () {
16.         float step = missileSpeed * Time.deltaTime;
17.         transform.position = Vector3.MoveTowards (transform.position, targetedEnemy.position, step);
18.     }
19. }

 

Thank you, sir, Accuracy I using to move enemy at the right position to execute by a player character, and look like it working out.

 

weird, it doesnt work for me. it says that the index was out of bounds of the array.