c语言贪吃蛇源码（带注释）

#include<Windows.h> #include"resource.h" #include"Node.h" #include<stdlib.h> #include<time.h> TCHAR szAppname[] = TEXT("Snack_eat"); #define SIDE (x_Client/80) #define x_Client 800 #define y_Client 800 #define X_MAX 800-20-SIDE //点x的范围 #define Y_MAX 800-60-SIDE //点y的范围 #define TIME_ID 1 #define SECOND 100 #define NUM_POINT 10 //点的总个数 #define ADD_SCORE 10 LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow) { HWND hwnd; //窗口句柄 MSG msg; //消息 WNDCLASS wndclass; //窗口类 HACCEL hAccel;//加速键句柄 wndclass.style = CS_HREDRAW | CS_VREDRAW; //窗口的水平和垂直尺寸被改变时，窗口被重绘 wndclass.lpfnWndProc = WndProc; //窗口过程为WndProc函数 wndclass.cbClsExtra = 0; //预留额外空间 wndclass.cbWndExtra = 0; //预留额外空间 wndclass.hInstance = hInstance; //应用程序的实例句柄，WinMain的第一个参数 wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION); //设置图标 wndclass.hCursor = LoadCursor(NULL, IDC_ARROW); //载入预定义的鼠标指针 wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); //设置画刷 wndclass.lpszMenuName = szAppname; //设置菜单 wndclass.lpszClassName = szAppname; //设置窗口类的名字 if (!RegisterClass(&wndclass))//注册窗口类 { MessageBox(NULL, TEXT("这个程序需要windows NT!"), szAppname, MB_ICONERROR); return 0; } hwnd = CreateWindow(szAppname, TEXT("Snack_eat"),//CreateWindow函数调用时，WndProc将受到WM_CREATE WS_OVERLAPPEDWINDOW&~WS_THICKFRAME& ~WS_MAXIMIZEBOX,//普通的层叠窗口&禁止改变大小&禁止最大化 CW_USEDEFAULT, //初始x坐标（默认） CW_USEDEFAULT, //初始y坐标 x_Client, //初始x方向尺寸 770 y_Client, //初始y方向尺寸 750 NULL, //父窗口句柄 NULL, //窗口菜单句柄 hInstance, //程序实例句柄 WinMain函数中第二个参数 NULL); //创建参数 ShowWindow(hwnd, iCmdShow);//显示窗口，iCmdShow是WinMain的第四个参数，决定窗口在屏幕中的初始化显示形式，例：SW_SHOWNORMAL表示正常显示 UpdateWindow(hwnd);//使窗口客户区重绘，通过向WndProc发送一条WM_PAINT消息而完成的 hAccel = LoadAccelerators(hInstance, szAppname);//加载加速键 while (GetMessage(&msg, NULL, 0, 0)) { if (!TranslateAccelerator(hwnd, hAccel, &msg)) { TranslateMessage(&msg); DispatchMessage(&msg); } }/* while (GetMessage(&msg, NULL, 0, 0))//GetMessage函数从消息队列中得到消息，填充msg。如果msg.message等于WM_QUIT，返回0，否则返回非0 { TranslateMessage(&msg);//将msg返回给windows已进行某些键盘消息的转换 DispatchMessage(&msg);//将msg再次返回给windows }*/ return msg.wParam;//msg.wParam是PostQuitMessage函数的参数值，通常是0 } LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { HDC hdc;//设备环境句柄：物理输出设备（视频显示器）及其设备驱动程序 PAINTSTRUCT ps;//PAINTSTRUCT结构包含一些窗口过程对客户区进行绘制的信息 static int cxClient, cyClient; static Snack sn; static POINT food[NUM_POINT]; Node *node; static szBuffer[50]; static int Moving;//正在前进方向，1上2下3左4右 int i; static int SIGNAL_ENDING; static HMENU hMenu; //菜单句柄 static int score;//得分 static Signal_Keydown;//1为接收键盘信息，0为不接收 switch (message) { case WM_CREATE: srand(time(0)); SIGNAL_ENDING = 1; return 0; case WM_COMMAND: hMenu = GetMenu(hwnd); switch (LOWORD(wParam)) { case ID_START: //################初始化 计时器################# if (SetTimer(hwnd, TIME_ID, SECOND, NULL)) { EnableMenuItem(hMenu, ID_START, MF_GRAYED);//将开始键设为灰色 EnableMenuItem(hMenu, ID_STOP, MF_ENABLED);//将暂停键设为可用 } //############################################## //################初始化 蛇################# sn.head = NULL; Change_food(&food[0], X_MAX, Y_MAX, SIDE); Create_snack(&sn, food[0]); //########################################## //################初始化 食物################# for (i = 0; i < NUM_POINT; i++) Change_food(&(food[i]), X_MAX, Y_MAX, SIDE); //############################################ //################初始化 正在前进方向######### Moving = 1; //############################################ //################初始化 结束标记############# SIGNAL_ENDING = 0; //############################################ //################初始化 分数################# score = 0; //############################################ Signal_Keydown = 1;//接收键盘消息 break; case ID_CONTINUE: EnableMenuItem(hMenu, ID_CONTINUE, MF_GRAYED);//将继续键设为灰色 EnableMenuItem(hMenu, ID_STOP, MF_ENABLED);//将暂停键设为可用 SetTimer(hwnd, TIME_ID, SECOND, NULL); Signal_Keydown = 1;//接收键盘消息 break; case ID_STOP: EnableMenuItem(hMenu, ID_STOP, MF_GRAYED);//将暂停键设为灰色 EnableMenuItem(hMenu, ID_CONTINUE, MF_ENABLED);//将继续键设为可用 KillTimer(hwnd, TIME_ID); Signal_Keydown = 0;//不接收键盘消息 break; case ID_QUIT: SendMessage(hwnd, WM_CLOSE, 0, 0); break; case ID_ABOUT: MessageBox(hwnd, TEXT("Jares's program\nPlease enjoy the game"), szAppname, MB_ICONINFORMATION | MB_OK); break; } break; case WM_TIMER://自动前进 switch (Moving) { case 1: UP_snack(&sn, SIDE, X_MAX, Y_MAX, &Moving); for (i = 0; i < NUM_POINT; i++) { if (Eat_food(&sn, food[i], 1, SIDE))//如果吃掉 { score += ADD_SCORE;//加分 //################改变 食物################# Change_food(&food[i], X_MAX, Y_MAX, SIDE); //########################################## } } break; case 2: DOWN_snack(&sn, SIDE, X_MAX, Y_MAX, &Moving); for (i = 0; i < NUM_POINT; i++) { if (Eat_food(&sn, food[i], 2, SIDE))//如果吃掉 { score += ADD_SCORE;//加分 //################改变 食物################# Change_food(&food[i], X_MAX, Y_MAX, SIDE); //########################################## } } break; case 3: LEFT_snack(&sn, SIDE, X_MAX, Y_MAX, &Moving); for (i = 0; i < NUM_POINT; i++) { if (Eat_food(&sn, food[i], 3, SIDE))//如果吃掉 { score += ADD_SCORE;//加分 //################改变 食物################# Change_food(&food[i], X_MAX, Y_MAX, SIDE); //########################################## } } break; case 4: RIGHT_snack(&sn, SIDE, X_MAX, Y_MAX, &Moving); for (i = 0; i < NUM_POINT; i++) { if (Eat_food(&sn, food[i], 4, SIDE))//如果吃掉 { score += ADD_SCORE;//加分 //################改变 食物################# Change_food(&food[i], X_MAX, Y_MAX, SIDE); //########################################## } } break; } InvalidateRect(hwnd, NULL, TRUE); break; case WM_KEYDOWN: if (Signal_Keydown == 0)//如果按下暂停Signal_Keydown=0，不接收键盘消息 break; switch (wParam) { case VK_UP: if (Moving == 1 || Moving == 2) break; UP_snack(&sn, SIDE, X_MAX, Y_MAX, &Moving); for (i = 0; i < NUM_POINT; i++) { if (Eat_food(&sn, food[i], 1, SIDE))//如果吃掉 { score += ADD_SCORE;//加分 //################改变 食物################# Change_food(&food[i], X_MAX, Y_MAX, SIDE); //########################################## } } Moving = 1; break; case VK_DOWN: if (Moving == 1 || Moving == 2) break; DOWN_snack(&sn, SIDE, X_MAX, Y_MAX, &Moving); for (i = 0; i < NUM_POINT; i++) { if (Eat_food(&sn, food[i], 2, SIDE))//如果吃掉 { score += ADD_SCORE;//加分 //################改变 食物################# Change_food(&food[i], X_MAX, Y_MAX, SIDE); //########################################## } } Moving = 2; break; case VK_LEFT: if (Moving == 3 || Moving == 4) break; LEFT