Unity: Look at Target Using C#

Learning Unity is so much fun. The Unity Engine has almost everything that you wish there was. Below is a script which lets an attached game controller to rotate its transform so that it looks at the target's transform position.

using UnityEngine;
using System.Collections;

public class LookAtTarget : MonoBehaviour {
    public Transform target;
    public float rotationSpeed = 5f;
    
    void Update() {
        // Find direction to target
        Vector3 direction = target.position - transform.position;
        
        // You might want to delete this line if you want to rotate on all axes
        direction.y = 0;
        
        // If we have a direction
        if (direction != Vector3.zero) {
            // Create rotation towards the direction
            Quaternion targetRotation = Quaternion.LookRotation(direction);
            
            // Smoothly rotate towards the target
            transform.rotation = Quaternion.Slerp(
                transform.rotation, 
                targetRotation, 
                rotationSpeed * Time.deltaTime
            );
        }
    }
}

How to Use This Script

1. Create a new C# script in Unity named LookAtTarget.cs
2. Copy and paste the code above
3. Attach the script to the game object you want to rotate
4. Assign a target Transform in the inspector
5. Adjust the rotation speed as needed

This script is particularly useful for:

• Camera follow behaviors
• Enemy AI that needs to face the player
• Character head-tracking systems
• Turrets and weapon systems

The Quaternion.Slerp function provides a smooth rotation instead of an instant snap, creating more natural-looking movement.