Player Looking in Opposite Direction

Basically, if I move my reticle to the top of the screen, the player looks down and vice versa. This also applies horizontally. I am making a top down shooter. Take a look at what I mean:

And here is my code. Very simple.

using UnityEngine;
using System.Collections;

[RequireComponent(typeof(CharacterController))]
public class PlayerController : MonoBehaviour 
{
	public float speed;
	public Texture2D reticle;
	public float reticleSensitivity;

	private CharacterController player;
	private Vector3 moveDir;
	private Transform myTransform;
	private Camera mainCam;
	private Vector3 lookDir;
	private float camDif;
	private Vector2 reticlePos;

	void Awake()
	{
		mainCam = Camera.main;
		myTransform = transform;
		camDif = mainCam.transform.position.y - myTransform.transform.position.y;
		player = GetComponent<CharacterController>();
	}

	void Update()
	{
		movement();
	}

	void movement()
	{
		reticlePos += new Vector2(Input.GetAxisRaw("360_RightStickHorizontal") * reticleSensitivity * Time.deltaTime, Input.GetAxisRaw("360_RightStickVertical") * reticleSensitivity * Time.deltaTime);
		reticlePos = new Vector2(Mathf.Clamp(reticlePos.x, 0, Screen.width), Mathf.Clamp(reticlePos.y, 0, Screen.height));

		lookDir = new Vector3(reticlePos.x, reticlePos.y, camDif);
		lookDir = mainCam.ScreenToWorldPoint(lookDir);
		myTransform.LookAt(lookDir);
		
		moveDir = new Vector3(Input.GetAxis("Horizontal"), 0f, Input.GetAxis("Vertical"));
		moveDir *= speed;
		
		player.Move(moveDir * Time.deltaTime);
	}

	void OnGUI()
	{
		GUI.DrawTexture(new Rect(reticlePos.x - 32, reticlePos.y - 32, 64, 64), reticle);
	}

}

…I am making a top down shooter…” - so shouldn’t you be considering x and z coordinates in all your calculations, not x and y?

You’re getting mixed up between world, screen and GUI coordinate systems - and you could make this easier on yourself by commenting your code and using better variable names - lookDir changes its context from a screen space position to world space position, for example (and neither one being a “direction”).

If you just want the answer given to you on a plate, change the line:

lookDir = new Vector3(reticlePos.x, reticlePos.y, camDif);

to:

lookDir = new Vector3(reticlePos.x, Screen.height - reticlePos.y, camDif);