Making a GameObject follow the direction of a RayCast

Questions & Answers
1

Right so i have an Enemy Prefab with a hierarchy something like this

Enemy
| -Rotate Point
|-Gun
|-FirePoint

The aim is to have the gun point at the player and follow it as the player moves.
The Rotate point is there so the Gun GameObject rotates around a certain point to making it look more natural.

I currently have the script attached to the RotatePoint GameObject in the heirachy :

    void Update()
    {
        Vector3 difference = new Vector3(GameObject.FindGameObjectWithTag("Plane").transform.position.x, GameObject.FindGameObjectWithTag("Plane").transform.position.y, 0);
        difference.Normalize();

        float rotZ = Mathf.Atan2(difference.y, difference.x) * Mathf.Rad2Deg;
        transform.rotation = Quaternion.Euler(0f, 0f, rotZ + rotationOffset);
    }

The gun currently does sort of track the player but is very slow in doing so and occasionally enemies will spawn firing way off from the player see screenshot.

83118-untitled.jpg
83118-untitled.jpg1920×1080 110 KB

Just trying to find a method that tracks the player smoother and more accurately than my current method. Any help would be greatly appreciated.

2

Try this:

void Update ()
	{
		Vector3 playerPos = GameObject.FindGameObjectWithTag ("Player").transform.position;
		transform.LookAt (playerPos);
	}

This will always point the gun at the player. If you want the gun to follow the player with a set speed but not instantly try this:

void Update(){

		float speed = 5; //Some Speed in anglesPerSecond
		Vector3 playerPos = GameObject.FindGameObjectWithTag ("Player").transform.position;
		Vector3 difference = playerPos - transform.position;
		Quaternion goalRot = Quaternion.LookRotation (difference);
		transform.rotation = Quaternion.RotateTowards (transform.rotation, goalRot, speed * Time.deltaTime); //This will rotate the gun 5° per second towards the player
	}

Good luck :slight_smile: