PlayerController.cs

using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour {

    private Vector2 moveDirection; // player's Vector
    [SerializeField] private Rigidbody2D rb2D; // player's rigidbody2D for unity physics
    private float Horizontal, Vertical; // This is for unity's built in Input..
    private float moveSpeed = 2.0f; // This is the player's movement speed.
    [SerializeField] private Animator _playerAnim; // players animator so, we can animate the player.

    /// <summary>
    /// Start is called on the frame when a script is enabled just before
    /// any of the Update methods is called the first time.
    /// </summary>
    private void Start()
    {
        rb2D = GetComponent<Rigidbody2D>(); // Get a reference to the rigidbody2D
        _playerAnim = GetComponent<Animator>(); // Get a reference to the player animator..
    }

    // Players movement method
    private void PlayerMovement() {
        Horizontal = Input.GetAxisRaw("Horizontal");
        Vertical = Input.GetAxisRaw("Vertical");

        moveDirection = new Vector2(Horizontal, Vertical) * moveSpeed;
    }

    // Players animator method..
    private void AnimatePlayer() {
        // We have 3 parameters in the Animator:
        // Two float values of: "X", "Y", and a Boolean "isMoving" which are being used in this method.
        _playerAnim.SetFloat("X", moveDirection.x);
        _playerAnim.SetFloat("Y", moveDirection.y);

        // check if the player is moving..
        if (moveDirection != Vector2.zero)
        {
            // If the player is moving.. set animation true..
            _playerAnim.SetBool("isMoving", true);
        }
        else {
            // otherwise set the animation false..
            _playerAnim.SetBool("isMoving", false);
        }
    }

    /// <summary>
    /// This function is called every fixed framerate frame, if the MonoBehaviour is enabled.
    /// </summary>
    private void FixedUpdate() {
        // Update the physics for our character's rigidbody2D
        rb2D.velocity = new Vector2(moveDirection.x, moveDirection.y);
    }

    /// <summary>
    /// Update is called every frame, if the MonoBehaviour is enabled.
    /// </summary>
    private void Update()
    {
        PlayerMovement(); // Calls to player's movement method to be updated every frame.
        AnimatePlayer(); // Calls to the players animation method to be updated every frame.

        // If you want teleporters in your game add this..
        // This does require the Teleport.cs file
        UseTeleportor();
    }


    // check if the entered the teleportor collider box..
    private void OnTriggerEnter2D(Collider2D other) {
        if (other.CompareTag("Teleportor")) {
            curTeleportor = other.gameObject;
        }
    }
    // check if the player exited the teleportor collider box..
    private void OnTriggerExit2D(Collider2D other) {
        if (other.CompareTag("Teleportor")) {
            if (other.gameObject == curTeleportor)
            curTeleportor = null;
        }
    }

    // A method for using the teleportor
    private void UseTeleportor() {
        // In project settings we have a input called "Interact"
        if (Input.GetButtonDown("Interact")) {
            if (curTeleportor != null) {
                // If we interact & teleportor isn't null, then transform the player to the other teleportor location..
                transform.position = curTeleportor.GetComponent<Teleport>().GetDestination().position;
            }
        }
    }
}