更新

Assets/_Scripts/GameSystem.cs

@@ -32,6 +32,7 @@ public class GameSystem : MonoBehaviour
 
     private void Update()
     {
+        UpdateTimeText();
         if (!isPauseGame)
         {
             currentTime -= Time.deltaTime;

Assets/_Scripts/MathGame.cs

+using UnityEngine;
+using UnityEngine.UI;
+using TMPro;
+using System.Collections;
+
+public class MathGame : MonoBehaviour
+{
+    [Tooltip("问题")]
+    public TMP_Text questionText;
+    [Tooltip("答案")]
+    public TMP_Text answerText;
+    [Tooltip("倒计时文本")]
+    public TMP_Text countdownText;
+    [Tooltip("倒计时时长")]
+    public float countdownDuration = 10f;
+    [Tooltip("错误机会数量")]
+    public int chances = 3; // 初始错误机会数量
+    [Tooltip("错误机会文本")]
+    public TMP_Text chancesText;
+
+    private int num1;
+    private int num2;
+    private char operation;
+    private int correctAnswer;
+    private bool isAnswered = false;
+    private Coroutine countdownCoroutine;
+
+    void Start()
+    {
+        GenerateQuestion();
+        countdownCoroutine = StartCoroutine(StartCountdown());
+    }
+
+    /// <summary>
+    /// 倒计时协程
+    /// </summary>
+    /// <returns></returns>
+    IEnumerator StartCountdown()
+    {
+        float timer = countdownDuration;
+        while (timer > 0f)
+        {
+            yield return new WaitForSeconds(1f);
+            timer -= 1f;
+            countdownText.text = timer.ToString();
+        }
+
+        if (!isAnswered)
+        {
+            Debug.Log("时间到！");
+            // 处理时间到的情况，例如重新生成问题
+            GenerateQuestion();
+            ReduceChances(); // 减少错误机会
+        }
+    }
+
+    /// <summary>
+    /// 生成问题
+    /// </summary>
+    private void GenerateQuestion()
+    {
+        // 检查错误机会是否大于零
+        if (chances <= 0)
+        {
+            Debug.Log("没有机会了！");
+            return;
+        }
+
+        // 生成两个随机数（1-9）
+        num1 = Random.Range(1, 10);
+        num2 = Random.Range(1, 10);
+
+        // 随机选择一个操作符
+        int opIndex = Random.Range(0, 4);
+        switch (opIndex)
+        {
+            case 0:
+                operation = '+';
+                correctAnswer = num1 + num2;
+                break;
+            case 1:
+                operation = '-';
+                correctAnswer = num1 - num2;
+                break;
+            case 2:
+                operation = '*';
+                correctAnswer = num1 * num2;
+                break;
+            case 3:
+                operation = '/';
+                correctAnswer = num1 / num2;
+                break;
+        }
+
+        // 显示问题
+        questionText.text = num1 + " " + operation + " " + num2 + " = ";
+        answerText.text = "";
+
+        // 重置倒计时
+        if (countdownCoroutine != null)
+        {
+            StopCoroutine(countdownCoroutine);
+            countdownCoroutine = StartCoroutine(StartCountdown());
+        }
+    }
+
+    /// <summary>
+    /// 判断答案是否正确
+    /// </summary>
+    /// <param name="userAnswer"></param>
+    public void CheckAnswer()
+    {
+        if (answerText.text == correctAnswer.ToString())
+        {
+            Debug.Log("正确");
+            isAnswered = true;
+            if (countdownCoroutine != null)
+            {
+                StopCoroutine(countdownCoroutine); // 停止倒计时
+            }
+        }
+        else
+        {
+            Debug.Log("错误");
+            ReduceChances(); // 减少错误机会
+        }
+    }
+
+    /// <summary>
+    /// 减少错误机会数量并更新显示
+    /// </summary>
+    private void ReduceChances()
+    {
+        chances--;
+        UpdateChancesText();
+    }
+
+    /// <summary>
+    /// 更新错误机会数量的显示
+    /// </summary>
+    private void UpdateChancesText()
+    {
+        chancesText.text = "Chances: " + chances;
+    }
+
+    /// <summary>
+    /// 点击回答按钮
+    /// </summary>
+    /// <param name="digit"></param>
+    public void AddDigit(int digit)
+    {
+        answerText.text += digit;
+    }
+
+    /// <summary>
+    /// 点击清除答案按钮
+    /// </summary>
+    public void ClearAnswer()
+    {
+        answerText.text = "";
+    }
+}

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Assets/_预设/UI.meta

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