シューティングチュートリアルをUnity5で(第05回)

5.1　プレイヤーに当たり判定を付ける

• 指定の0.02だと衝突判定を起こせないのでSizeをX,Yともに0.05にする(冒頭の注意書きがこれ。全回に書いてあるので最初気づかなかった)。

5.2　エネミーに当たり判定を付ける

• コライダー編集を行う時はEdit Colliderボタンを押下する。ボタン色が濃灰になると編集モード。

スクリプトでレイヤー制御

• 特記事項なし

using UnityEngine;
using System.Collections;

public class Player : MonoBehaviour {
    Spaceship spaceship;
    private Transform tran;

    void Start() {
        spaceship = GetComponent<Spaceship>();
        tran = GetComponent<Transform>();
        StartCoroutine("IE");
    }

    IEnumerator IE()
    {
        while (true) {
            spaceship.Shot(tran);
            yield return new WaitForSeconds(spaceship.shotDelay);
        }
    }

    void Update () {
        float x = Input.GetAxisRaw("Horizontal");
        float y = Input.GetAxisRaw("Vertical");
        Vector2 direction = new Vector2(x, y).normalized;
        spaceship.Move(direction);
    }

    void OnTriggerEnter2D(Collider2D c)
    {
        string layerName = LayerMask.LayerToName(c.gameObject.layer);
        if (layerName == "Bullet(Enemy)") {
            Destroy (c.gameObject);
        }

        if (layerName == "Bullet(Enemy)" || layerName == "Enemy") {
            spaceship.Explosion ();
            Destroy (gameObject);
        }
    }
}

エネミーの当たり判定

• 特記事項なし

using UnityEngine;
using System.Collections;

public class Enemy : MonoBehaviour {
    Spaceship spaceship;
    private Transform tran;

    void Start () {
        spaceship = GetComponent<Spaceship> ();
        tran = GetComponent<Transform> ();
        spaceship.Move (tran.up * -1);

        StartCoroutine ("IE");
    }

    IEnumerator IE() {
        if (spaceship.canShot == false) {
            yield break;
        }

        while (true) {
            for (int i = 0; i < tran.childCount; i++) {
                Transform shotPosition = transform.GetChild (i);
                spaceship.Shot (shotPosition);
            }
            yield return new WaitForSeconds (spaceship.shotDelay);
        }
    }

    void OnTriggerEnter2D(Collider2D c)
    {
        string layerName = LayerMask.LayerToName (c.gameObject.layer);

        if (layerName != "Bullet(Player)")
            return;

        Destroy (c.gameObject);
        spaceship.Explosion ();
        Destroy (gameObject);
    }
}

5.8　PlayerBulletゲームオブジェクトの削除

• 特記事項なし

using UnityEngine;
using System.Collections;

public class Bullet : MonoBehaviour {
    public int speed = 10;
    public float lifeTime = 5;
    private Rigidbody2D rb2;

    void Start () {
        rb2 = GetComponent<Rigidbody2D>();
        rb2.velocity = transform.up * speed;
        Destroy (gameObject, lifeTime);
    }
}