ブロック崩し2

手順

１）ブロックを作る
２）プレハブにして全てブロックで配置
３）ボールを真上に飛ぶように作成
４）コインを作成
５）コインの当たり判定だけ実装

以降は課題にする

PhysicsMaterial2D

BounceMaterial:Bounciness=1, Friction=0
対象：上左右の壁、ボール

FloorMaterial:Bounciness=0, Friction=0
対象：床

スクリプト

StageGenerator.cs

csharp
コピー
1using UnityEngine;
2
3public class StageGenerator : MonoBehaviour
4{
5    [SerializeField] private GameObject block;
6    [SerializeField] private GameObject coin;
7    [SerializeField] private int marginX;
8    [SerializeField] private int marginY;
9    [SerializeField] private int row;
10    [SerializeField] private int column;
11
12    void Awake()
13    {
14        var basePosition = transform.position;
15        for (int i = 0; i < row; i++)
16        {
17            int coinNumber = Random.Range(0, row);
18            for (int j = 0; j < column; j++)
19            {
20                Vector3 pos = basePosition + new Vector3(j * marginX, -i * marginY, 0);
21                if (j == coinNumber)
22                {
23                    Instantiate(coin, pos, Quaternion.identity);
24                }
25                else
26                {
27                    Instantiate(block, pos, Quaternion.identity);
28                }
29            }
30        }
31    }
32
33    // Update is called once per frame
34    void Update()
35    {
36
37    }
38}

csharp
コピー
1public enum BallState
2{
3    Idle,
4    Flying
5}

csharp
コピー
1using TMPro;
2using UnityEngine;
3using UnityEngine.InputSystem;
4
5public class Ball : MonoBehaviour
6{
7    [SerializeField] private float launchSpeed = 8f;
8    [SerializeField] private GameManager gameManager;
9    [SerializeField] private Rigidbody2D rigidbody2d;
10    [SerializeField] private TextMeshProUGUI scoreText;
11
12    private BallState state = BallState.Idle;
13    private int score;
14
15    void Start()
16    {
17        scoreText.text = "Score: " + score;
18    }
19
20    void Update()
21    {
22        if (state != BallState.Idle) return;
23
24        Pointer pointer = Pointer.current;
25        if (pointer == null || !pointer.press.wasPressedThisFrame) return;
26
27        Vector2 screenPos = pointer.position.ReadValue();
28        Vector3 worldPos = Camera.main.ScreenToWorldPoint(
29            new Vector3(screenPos.x, screenPos.y, -Camera.main.transform.position.z));
30
31        Vector2 dir = ((Vector2)worldPos - (Vector2)transform.position).normalized;
32        rigidbody2d.linearVelocity = dir * launchSpeed;
33        state = BallState.Flying;
34    }
35
36    void OnCollisionEnter2D(Collision2D collision)
37    {
38        if (collision.collider.CompareTag("Block"))
39        {
40            Destroy(collision.gameObject);
41            gameManager.NotifyBlockDestroyed();
42            return;
43        }
44
45        if (state == BallState.Flying && collision.collider.CompareTag("Floor"))
46        {
47            rigidbody2d.linearVelocity = Vector2.zero;
48            state = BallState.Idle;
49        }
50    }
51
52    void OnTriggerEnter2D(Collider2D other)
53    {
54        if (other.gameObject.CompareTag("Coin"))
55        {
56            score++;
57            scoreText.text = "Score: " + score;
58            Destroy(other.gameObject);
59        }
60    }
61}

csharp
コピー
1using UnityEngine;
2
3public class GameManager : MonoBehaviour
4{
5    [SerializeField] private GameObject clearUIPanel;
6
7    private int remainingBlocks;
8
9    void Start()
10    {
11        clearUIPanel.SetActive(false);
12        remainingBlocks = GameObject.FindGameObjectsWithTag("Block").Length;
13    }
14
15    public void NotifyBlockDestroyed()
16    {
17        remainingBlocks--;
18        if (remainingBlocks <= 0)
19        {
20            clearUIPanel.SetActive(true);
21        }
22    }
23}
24