Unity fågel script??!

using UnityEngine;
using System.Collections;

public class Move : MonoBehaviour
{
    public float speed = 5.0f;
    public float jump = 2.0f;
    public float down = 1.0f;
    public float downforce = 0.3f;

    public float jumpHeight = 20f;
    public float jumpCooldown = 2f;

    private float currentCooldown = 0f;
    private int currentJumpsLeft = 2;
    private jumpState currentBirdState = jumpState.ready;
    private Vector3 goalHeight;

    enum jumpState
    {
        ready,
        jumping,
        cooldown
    }

    // Use this for initialization
    void Start()
    {

    }

    // Update is called once per frame
    void Update()
    {
        transform.Translate(Vector3.right * Input.GetAxis("Horizontal") * speed);
        transform.Translate(Vector3.forward * Input.GetAxis("Vertical") * speed);

        if (Input.GetButtonDown("Jump"))
        {
            // Vi har hopp kvar och är redo att hoppa
            if (currentJumpsLeft > 0 && this.currentBirdState == jumpState.ready)
            {
                this.currentBirdState = jumpState.jumping;
                this.currentJumpsLeft -= 1;
                this.goalHeight = this.transform.position + Vector3.up * jumpHeight;
            }
        }

        if (this.currentBirdState == jumpState.jumping)
        {
            transform.Translate(Vector3.up * jump);

            // har vi nått höjd-destinationen så slutar vi att hoppa
            if (transform.position.y > this.goalHeight.y)
            {
                if (this.currentJumpsLeft == 0)
                {
                    // Vi har inga hopp kvar, vänta på cooldown
                    this.currentBirdState = jumpState.cooldown;
                }
                else
                {
                    // Vi har hopp kvar och är redo att hoppa igen
                    this.currentBirdState = jumpState.ready;
                }
            }
        }
        else
        {
            // Om vi inte hoppar så faller vi
            transform.Translate(Vector3.down * downforce);
        }

        // Ifall vi har slut på hopp så väntar vi 'jumpCooldown' sekunder
        if (this.currentBirdState == jumpState.cooldown)
        {
            currentCooldown += Time.deltaTime;
            if (currentCooldown > this.jumpCooldown)
            {
                this.currentCooldown = 0;
                this.currentBirdState = jumpState.ready;
                this.currentJumpsLeft = 2;
            }
        }
    }
}