unity微信小游戏代码框架

以下是一个简单的Unity微信小游戏代码框架：

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

public class MyGame : MonoBehaviour
{
    // 游戏状态枚举
    public enum GameState
    {
        Init,
        Playing,
        GameOver
    }

    public Text scoreText; // 显示分数的UI Text
    public GameObject ballPrefab; // 球的预制体
    public Transform ballSpawnPoint; // 球生成点
    public float ballSpeed; // 球的速度
    public float ballSpawnDelay; // 球生成延迟时间

    private int score = 0; // 分数
    private GameState gameState = GameState.Init; // 当前游戏状态
    private List<GameObject> balls = new List<GameObject>(); // 球的列表

    void Start()
    {
        // 初始化
        gameState = GameState.Init;
        score = 0;
        scoreText.text = "Score: " + score;
    }

    void Update()
    {
        // 检测用户点击屏幕
        if (Input.GetMouseButtonDown(0))
        {
            // 如果游戏状态为 Init，则开始游戏
            if (gameState == GameState.Init)
            {
                gameState = GameState.Playing;
                SpawnBall();
            }
            // 如果游戏状态为 GameOver，则重新开始游戏
            else if (gameState == GameState.GameOver)
            {
                gameState = GameState.Init;
                score = 0;
                scoreText.text = "Score: " + score;
                foreach (GameObject ball in balls)
                {
                    Destroy(ball);
                }
                balls.Clear();
            }
        }
    }

    // 生成球
    void SpawnBall()
    {
        GameObject ball = Instantiate(ballPrefab, ballSpawnPoint.position, Quaternion.identity);
        balls.Add(ball);
        ball.GetComponent<Rigidbody2D>().velocity = Vector2.up * ballSpeed;
        Invoke("SpawnBall", ballSpawnDelay);
    }

    // 球与挡板碰撞
    void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.gameObject.CompareTag("Ball"))
        {
            score++;
            scoreText.text = "Score: " + score;
        }
    }

    // 球落地
    void OnTriggerEnter2D(Collider2D collider)
    {
        if (collider.gameObject.CompareTag("Ball"))
        {
            gameState = GameState.GameOver;
        }
    }
}

在微信小游戏中，需要将以上代码保存为JS脚本，并使用微信小游戏提供的API进行调用和部署。例如，在微信小游戏中，我们可以使用以下代码来创建并启动游戏：

const { screenWidth, screenHeight } = wx.getSystemInfoSync();
const canvas = wx.createCanvas();
const context = canvas.getContext('2d');
const game = new MyGame();

canvas.width = screenWidth;
canvas.height = screenHeight;

function loop() {
  context.clearRect(0, 0, canvas.width, canvas.height);
  game.Update();
  game.Draw(context);
  requestAnimationFrame(loop);
}

loop();