添加计时器，确保按键间隔足够大才移动方向

build/Desktop_Qt_6_2_4_MinGW_64_bit-Debug/.qmake.stash

@@ -0,0 +1,21 @@
+QMAKE_CXX.QT_COMPILER_STDCXX = 201703L
+QMAKE_CXX.QMAKE_GCC_MAJOR_VERSION = 11
+QMAKE_CXX.QMAKE_GCC_MINOR_VERSION = 2
+QMAKE_CXX.QMAKE_GCC_PATCH_VERSION = 0
+QMAKE_CXX.COMPILER_MACROS = \
+    QT_COMPILER_STDCXX \
+    QMAKE_GCC_MAJOR_VERSION \
+    QMAKE_GCC_MINOR_VERSION \
+    QMAKE_GCC_PATCH_VERSION
+QMAKE_CXX.INCDIRS = \
+    C:/Qt/Tools/mingw1120_64/lib/gcc/x86_64-w64-mingw32/11.2.0/include/c++ \
+    C:/Qt/Tools/mingw1120_64/lib/gcc/x86_64-w64-mingw32/11.2.0/include/c++/x86_64-w64-mingw32 \
+    C:/Qt/Tools/mingw1120_64/lib/gcc/x86_64-w64-mingw32/11.2.0/include/c++/backward \
+    C:/Qt/Tools/mingw1120_64/lib/gcc/x86_64-w64-mingw32/11.2.0/include \
+    C:/Qt/Tools/mingw1120_64/lib/gcc/x86_64-w64-mingw32/11.2.0/include-fixed \
+    C:/Qt/Tools/mingw1120_64/x86_64-w64-mingw32/include
+QMAKE_CXX.LIBDIRS = \
+    C:/Qt/Tools/mingw1120_64/lib/gcc/x86_64-w64-mingw32/11.2.0 \
+    C:/Qt/Tools/mingw1120_64/lib/gcc \
+    C:/Qt/Tools/mingw1120_64/x86_64-w64-mingw32/lib \
+    C:/Qt/Tools/mingw1120_64/lib

gamecontroller.cpp

@@ -4,7 +4,10 @@
 #include <QMessageBox>
 #include <QAction>
 #include <iostream>
+#include <cstdlib>  // 添加头文件
 
+// 在文件开头定义（不推荐长期使用）
+#define qrand() rand()
 #include "gamecontroller.h"
 #include "food.h"
 #include "snake.h"

snake.cpp

@@ -13,6 +13,7 @@ Snake::Snake(GameController &controller) :
     moveDirection(NoMove),
     controller(controller)
 {
+     lastDirectionChangeTime = QTime::currentTime(); // 初始化时间
 }
 
 QRectF Snake::boundingRect() const
@@ -72,7 +73,14 @@ void Snake::setMoveDirection(Direction direction)
         return;
     if (moveDirection == MoveDown && direction == MoveUp)
         return;
+    // 检查时间间隔
+    QTime currentTime = QTime::currentTime();
+    if (lastDirectionChangeTime.isValid() && lastDirectionChangeTime.msecsTo(currentTime) < 100) { // 100 毫秒的时间间隔
+        return;
+    }
+
     moveDirection = direction;
+    lastDirectionChangeTime = currentTime; // 更新时间
 }
 
 Snake::Direction Snake::currentDirection()

snake.h

@@ -3,7 +3,7 @@
 
 #include <QGraphicsItem>
 #include <QRectF>
-
+#include <QTime> // 添加这一行
 class GameController;
 
 class Snake : public QGraphicsItem
@@ -36,7 +36,7 @@ class Snake : public QGraphicsItem
     void moveDown();
 
     void handleCollisions();
-
+ QTime lastDirectionChangeTime; // 添加成员变量
     QPointF        head;
     int            growing;
     int            speed;