游戏编程基础003---平面地图拼接

最新推荐文章于 2021-06-26 23:27:24 发布

liu_liu213

最新推荐文章于 2021-06-26 23:27:24 发布

阅读量449

点赞数

分类专栏：游戏起步文章标签：编程游戏 null callback image 存储

本文链接：https://blog.youkuaiyun.com/liu_liu213/article/details/7191984

版权

游戏起步专栏收录该内容

12 篇文章

订阅专栏

本文介绍了一个绘图程序的实现过程，该程序通过特定的图块排列来构建地图。程序包含了初始化、注册窗口类别、窗口初始化、绘图函数等关键步骤，并详细解释了图块排列逻辑。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

代码地址：http://download.youkuaiyun.com/detail/liu_liu213/4013211

/************************************************************************/
/* 列编号 = 索引值 / 每一列的图块个数
   行编号 = 索引值 % 每一列的图块个数
   左上点X坐标 = 行编号* 图块宽度
   左上点Y坐标 = 列编号* 图块高度
*/
/************************************************************************/

#include "stdafx.h"

//全局变量声明
HINSTANCE hInst;
HBITMAP fullmap;
HDC mdc;
const int rows=8, cols=8;

//全局函数
void MyPaint(HDC hdc);
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);

//****程序入口**************************************
int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
	MSG msg;

	MyRegisterClass(hInstance);

	//运行初始化函数
	if (!InitInstance (hInstance, nCmdShow)) 
	{
		return FALSE;
	}

	//消息循环
	while (GetMessage(&msg, NULL, 0, 0)) 
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}

	return msg.wParam;
}

//****定义及注册窗口类别函数*************************
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX); 
	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= (WNDPROC)WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= NULL;
	wcex.hCursor		= NULL;
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName	= NULL;
	wcex.lpszClassName	= "canvas";  //类别名称
	wcex.hIconSm		= NULL;

	return RegisterClassEx(&wcex);
}

//****初始化*************************************
// 1.存储instance handle与全局变量中
// 2.建立并显示主窗口
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
	HWND hWnd;
	HDC hdc, bufdc;

	hInst = hInstance;

	hWnd = CreateWindow("canvas", "绘图窗口" , WS_OVERLAPPEDWINDOW,
		CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

	if (!hWnd)
	{
		return FALSE;
	}

	MoveWindow(hWnd,10,10,600,450,true);
	ShowWindow(hWnd, nCmdShow);
	UpdateWindow(hWnd);

	int mapIndex[rows*cols] = { 2,2,2,2,0,1,0,1,  //第1列
								0,2,2,0,0,0,1,1,  //
								0,0,0,0,0,0,0,1,  //
								2,0,0,0,0,0,2,2,  //
								2,0,0,0,0,2,2,2,  //
								2,0,0,0,2,2,0,0,  //
								0,0,2,2,2,0,0,1,  //
								0,0,2,0,0,0,1,1 }; //第8列
	hdc = GetDC(hWnd);
	mdc = CreateCompatibleDC(hdc);
	bufdc = CreateCompatibleDC(hdc);
	fullmap = CreateCompatibleBitmap(hdc, cols*50, rows*50);

	SelectObject(mdc, fullmap);

	HBITMAP map[3];
	char filename[20] = "";
	int rowNum,colNum;
	int i, x, y;

	//加载各图块位图
	for (i=0; i<3; i++){
		sprintf(filename, "map%d.bmp", i);
		map[i] = (HBITMAP)LoadImage(NULL, filename, IMAGE_BITMAP, 50, 50, LR_LOADFROMFILE);

	}

	//按mapIndex数组中定义取出对应图块，进行地图拼接(列不是列数 行不是行数  而是相反的概率)

	for(i=0; i<rows*cols; i++){
		SelectObject(bufdc, map[mapIndex[i]]);
		rowNum = i / cols;  //列编号
		colNum = i % cols;  //行编号
		x = colNum * 50;
		y = rowNum * 50;
		BitBlt(mdc, x, y, 50, 50, bufdc, 0, 0,SRCCOPY);
	}

	MyPaint(hdc);
	ReleaseDC(hWnd, hdc);
	DeleteDC(bufdc);

	return TRUE;
}


void MyPaint(HDC hdc)
{
	//SelectObject(mdc, fullmap);
	BitBlt(hdc, 10, 10, cols*50, rows*50, mdc, 0, 0, SRCCOPY);
}

//****回调函数***********************************
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	PAINTSTRUCT ps;
	HDC hdc;

	switch (message) 
	{
		case WM_PAINT:						
			hdc = BeginPaint(hWnd, &ps);
			MyPaint(hdc);
			EndPaint(hWnd, &ps);
			break;
		case WM_DESTROY:	
			PostQuitMessage(0);
			break;
		default:							
			return DefWindowProc(hWnd, message, wParam, lParam);
   }
   return 0;
}