StateMachine2c2

using UnityEngine;
using System.Collections;

public class PlayerScript : MonoBehaviour {

    public GameObject blueObject;
    public GameObject redObject;

    private GameObject currentObject;

    int currentState = 0; // 0: Blue    1: Red

    void Start () {
        currentObject = blueObject;
    }

    void Update () {

        // state: Blue
        if (currentState == 0) {
            Debug.Log ("Blue");

            // 移動
            if (Input.GetKey (KeyCode.RightArrow)) {
                this.transform.position += Vector3.right * Time.deltaTime * 5f;
            }
                
            if (Input.GetKey (KeyCode.LeftArrow)) {
                this.transform.position += Vector3.right * (-1) * Time.deltaTime * 5f;
            }

            // 状態変更
            if (Input.GetKeyDown (KeyCode.R)) {
                currentState = 1;
                ChangeMode (redObject);
            }
        }

        // state: Red
        if (currentState == 1) {
            Debug.Log ("Red");

            if(Input.GetKeyDown(KeyCode.B)){
                currentState = 0;
                ChangeMode (blueObject);
            }
        }
    }

    void ChangeMode(GameObject obj){
        currentObject.SetActive(false);
        currentObject = obj;
        currentObject.SetActive (true);
    }
}