snakeexm.cpp

自写贪吃蛇程序 对新手有一定的帮助。。。。。。。。。。。。。。。。。。。。。。

// SnakeExm.cpp : 定义应用程序的入口点。
//

#include "stdafx.h"
#include "SnakeExm.h"

#define MAX_LOADSTRING 100

// 结构体:
typedef struct
{
	int x;
	int y;
} strPos;

typedef struct _strBody
{
	strPos pos;
	int will;
	struct _strBody *next;
} strBody;

// 全局变量:
HINSTANCE hInst;								// 当前实例
TCHAR szTitle[MAX_LOADSTRING];					// 标题栏文本
TCHAR szWindowClass[MAX_LOADSTRING];			// 主窗口类名
strBody *Head = NULL;							// 蛇的脑袋
strPos apple;

// 此代码模块中包含的函数的前向声明:
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK	About(HWND, UINT, WPARAM, LPARAM);

BOOL				Setup();				// 蛇的初始化
BOOL				ListWill();				// 蛇的方向整理
BOOL				OneStep(HDC, HWND);		// 蛇的移动
BOOL				CheckEat();				// 碰撞检测
BOOL				CleanUp(HWND);			// 擦屁股
BOOL				DeathChk(HWND);			// 死亡检测

////////////////////////////////////////////////////////////////

BOOL DeathChk(HWND hWnd)
{
	static bool overflag = true;
	if(Head->pos.x>=31 || Head->pos.y>=20 || Head->pos.x<0 || Head->pos.y<0)
	{
		if(overflag)
		{
			overflag = false;
			KillTimer(hWnd, 1);
			if(MessageBox(NULL, L"你挂了！", L"X_X", MB_OK) == IDOK)
				PostQuitMessage(0);
		}
	}

	return TRUE;
}

BOOL Setup()
{
	Head = new strBody;

	Head->next = NULL;
	Head->pos.x = 1;
	Head->pos.y = 1;
	Head->will = 1;

	return TRUE;
}

BOOL ListWill()
{
	for(strBody *i = Head; i->next != NULL; i = i->next)
	{
		if(i->pos.x-1 == i->next->pos.x)
		{
			i->next->will = 1;
		}

		if(i->pos.y-1 == i->next->pos.y)
		{
			i->next->will = 2;
		}

		if(i->pos.x+1 == i->next->pos.x)
		{
			i->next->will = 3;
		}

		if(i->pos.y+1 == i->next->pos.y)
		{
			i->next->will = 0;
		}

	}

	return TRUE;
}

BOOL OneStep(HDC hdc, HWND hWnd)
{
	DeathChk(hWnd);
	CheckEat();
	ListWill();

	for(strBody *i = Head; i != NULL; i = i->next)
	{
		switch(i->will)
		{
		case 0:
			i->pos.y--;
			break;
		case 1:
			i->pos.x++;
			break;
		case 2:
			i->pos.y++;
			break;
		case 3:
			i->pos.x--;
			break;
		}
	}

	for(strBody *i = Head; i != NULL; i = i->next)
	{
		TextOut(hdc, i->pos.x*10, i->pos.y*10, L"囧", 1);
	}

	return TRUE;
}

BOOL CheckEat()
{
	strBody *i;

	if(Head->pos.x == apple.x &&
		Head->pos.y == apple.y)
	{
			apple.x = rand()%32;
			apple.y = rand()%24;

			for(i = Head; i->next != NULL; i = i->next);

			i->next = new strBody;
			i->next->next = NULL;
			i->next->pos.x = i->pos.x;
			i->next->pos.y = i->pos.y;
			
			switch(i->will)
			{
			case 0:
				i->next->pos.y--;
				break;
			case 1:
				i->next->pos.x++;
				break;
			case 2:
				i->next->pos.y++;
				break;
			case 3:
				i->next->pos.x--;
				break;
			}
	}

	return TRUE;
}

BOOL CleanUp(HWND hWnd)
{
	Rectangle(GetDC(hWnd), 0, 0, 320, 240);

	return TRUE;
}

////////////////////////////////////////////////////////////////

int APIENTRY _tWinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR    lpCmdLine,
                     int       nCmdShow)
{
	UNREFERENCED_PARAMETER(hPrevInstance);
	UNREFERENCED_PARAMETER(lpCmdLine);

 	// TODO: 在此放置代码。
	MSG msg;
	HACCEL hAccelTable;

	// 初始化全局字符串
	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	LoadString(hInstance, IDC_SNAKEEXM, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance);

	// 执行应用程序初始化:
	if (!InitInstance (hInstance, nCmdShow))
	{
		return FALSE;
	}

	hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_SNAKEEXM));

	// 主消息循环:
	while (GetMessage(&msg, NULL, 0, 0))
	{
		if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}

	return (int) msg.wParam;
}



//
//  函数: MyRegisterClass()
//
//  目的: 注册窗口类。
//
//  注释:
//
//    仅当希望
//    此代码与添加到 Windows 95 中的“RegisterClassEx”
//    函数之前的 Win32 系统兼容时，才需要此函数及其用法。调用此函数十分重要，
//    这样应用程序就可以获得关联的
//    “格式正确的”小图标。
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX);

	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, MAKEINTRESOURCE(IDI_SNAKEEXM));
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName	= NULL;
	wcex.lpszClassName	= szWindowClass;
	wcex.hIconSm		= LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

	return RegisterClassEx(&wcex);
}

//
//   函数: InitInstance(HINSTANCE, int)
//
//   目的: 保存实例句柄并创建主窗口
//
//   注释:
//
//        在此函数中，我们在全局变量中保存实例句柄并
//        创建和显示主程序窗口。
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // 将实例句柄存储在全局变量中

   hWnd = CreateWindow(szWindowClass, szTitle, WS_VISIBLE | WS_SYSMENU,
      CW_USEDEFAULT, 0, 320, 240, NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

//
//  函数: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  目的: 处理主窗口的消息。
//
//  WM_COMMAND	- 处理应用程序菜单
//  WM_PAINT	- 绘制主窗口
//  WM_DESTROY	- 发送退出消息并返回
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	HDC hdc;

	switch (message)
	{
	case WM_CREATE:
		Setup();
		apple.x = rand()%32;
		apple.y = rand()%24;
		SetTimer(hWnd, 1, 200, NULL);
		break;
	case WM_TIMER:
		CleanUp(hWnd);
		TextOut(GetDC(hWnd), apple.x*10, apple.y*10, L"X", 1);
		OneStep(GetDC(hWnd), hWnd);
		break;
	case WM_KEYDOWN:
		switch(wParam)
		{
		case VK_UP:
			Head->will = 0;
			break;
		case VK_RIGHT:
			Head->will = 1;
			break;
		case VK_DOWN:
			Head->will = 2;
			break;
		case VK_LEFT:
			Head->will = 3;
			break;
		}
		break;
	case WM_COMMAND:
		wmId    = LOWORD(wParam);
		wmEvent = HIWORD(wParam);
		// 分析菜单选择:
		switch (wmId)
		{
		case IDM_ABOUT:
			DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
			break;
		case IDM_EXIT:
			DestroyWindow(hWnd);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
		}
		break;
	case WM_PAINT:
		hdc = BeginPaint(hWnd, &ps);
		// TODO: 在此添加任意绘图代码...
		EndPaint(hWnd, &ps);
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

// “关于”框的消息处理程序。
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	UNREFERENCED_PARAMETER(lParam);
	switch (message)
	{
	case WM_INITDIALOG:
		return (INT_PTR)TRUE;

	case WM_COMMAND:
		if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
		{
			EndDialog(hDlg, LOWORD(wParam));
			return (INT_PTR)TRUE;
		}
		break;
	}
	return (INT_PTR)FALSE;
}