using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ShotBullet : MonoBehaviour {

	public GameObject bulletPrefab;
	public AudioClip shotSound;
	public float shotSpeed;
	public static int shotBulletCount = 10;

	// ★追加
	// 回復の権利の箱
	public static int bulletItemCount = 0;

	void Update () {

		if (Input.GetKeyDown (KeyCode.Space)) {

			if (shotBulletCount < 1) {
				return;
			}
				
			shotBulletCount -= 1;

			GameObject bullet = (GameObject)Instantiate (bulletPrefab, transform.position, Quaternion.Euler (transform.parent.eulerAngles.x, transform.parent.eulerAngles.y, 0));
			Rigidbody bulletRb = bullet.GetComponent<Rigidbody> ();
			bulletRb.AddForce (transform.forward * shotSpeed);
			AudioSource.PlayClipAtPoint (shotSound, Camera.main.transform.position);
			Destroy (bullet, 2.0f);
		}
	}

	// ★追加
	public void AddBulletItem(int amount){
		bulletItemCount += amount;
		print ("ライフル弾の回復の権利" + bulletItemCount + "回");
	}
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class BulletItem : MonoBehaviour {

	public AudioClip getSound;
	public AudioClip buzzerSound;
	private GameObject sb;

	void OnTriggerEnter(Collider other){
		if (other.gameObject.tag == "Player") {

			sb = GameObject.Find ("ShotBullet");

			// （重要ポイント）
			// 「!= null」の意味を確認しましょう。 
			// ShotBulletオブジェクトが非表示（オフ）ではない時、つまり「オン」の時
			if (sb != null) {
				sb.GetComponent<ShotBullet> ().AddBulletItem (1);
				AudioSource.PlayClipAtPoint (getSound, Camera.main.transform.position);
				Destroy (gameObject);
			} else {

				// ShotBulletオブジェクトが非表示（オフ）の時は警告音を鳴らす。
				AudioSource.PlayClipAtPoint (buzzerSound, Camera.main.transform.position);
			}
		}
	}
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ShotRocket : MonoBehaviour {

	public GameObject rocketPrefab;
	public AudioClip shotSound;
	public float rocketSpeed;
	private float timeBetweenShot = 1.2f;
	private float timer;
	public static int shotRocketCount = 10;

	// ★追加
	// 回復の権利の箱
	public static int RocketItemCount = 0;

	void Update () {

		timer += Time.deltaTime;

		if (Input.GetKeyDown (KeyCode.Space) && timer > timeBetweenShot) {

			if (shotRocketCount < 1) {
				return;
			}
				
			shotRocketCount -= 1;

			timer = 0.0f;

			GameObject rocket = (GameObject)Instantiate (rocketPrefab, transform.position, Quaternion.Euler (transform.parent.eulerAngles.x, transform.parent.eulerAngles.y, 0));
			Rigidbody rocketRb = rocket.GetComponent<Rigidbody> ();
			rocketRb.AddForce (transform.forward * rocketSpeed);
			AudioSource.PlayClipAtPoint (shotSound, Camera.main.transform.position);
			Destroy (rocket, 3.0f);
		}
	}

	// ★追加
	public void AddRocketItem(int amount){
		RocketItemCount += amount;
		print ("ロケット弾の回復の権利" + RocketItemCount + "回");
	}
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class RocketItem : MonoBehaviour {

	public AudioClip getSound;
	public AudioClip buzzerSound;
	private GameObject sr;

	void OnTriggerEnter(Collider other){
		if (other.gameObject.tag == "Player") {

			sr = GameObject.Find ("ShotRocket");

			// （重要ポイント）
			// 「!= null」の意味を確認しましょう。 
			// ShotRocketオブジェクトが非表示（オフ）ではない時、つまり「オン」の時
			if (sr != null) {
				sr.GetComponent<ShotRocket> ().AddRocketItem (1);
				AudioSource.PlayClipAtPoint (getSound, Camera.main.transform.position);
				Destroy (gameObject);
			} else {

				// ShotRocketオブジェクトが非表示（オフ）の時は警告音を鳴らす。
				AudioSource.PlayClipAtPoint (buzzerSound, Camera.main.transform.position);
			}
		}
	}
}