【游戏程序设计】键盘交互

【游戏程序设计】键盘交互

键盘控制小人的行动。

运行结果：

源代码：

#include <windows.h>
#include <tchar.h>													//使用swprintf_s函数所需的头文件 
#pragma comment(lib, "winmm.lib")									//调用PlaySound函数所需库文件t#define WINDOW_WIDTH 800
#define WINDOW_HEIGHT 600
#define WINDOW_TITLE L"【游戏程序设计】键盘交互"HINSTANCE hInst;
HDC hdc, mdc, bufdc;
HBITMAP hBackGround, g_hSprite[4];									//声明位图数组用来存储人物位图
DWORD g_tNow, g_tPre;					//两个变量记录时间，g_tPre记录上一次绘图的时间，g_tNow记录此次准备绘图的时间
int g_iNum, g_iX, g_iY;											//g_iNum用来记录图号，g_iX,g_iY分别表示贴图的横纵坐标
int g_iDirection;													//人物移动方向，0,1,2,3代表人物上下左右方向的移动
HWND hwnd;
int  MyWindowClass(HINSTANCE);
BOOL InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
void MyDraw(HWND);/*****************************************************************************************************************
在不同的应用程序中，在此处添加相关的全局变量
******************************************************************************************************************/
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPreInstace,LPSTR lpCmdLine, int nCmdShow) 
{MyWindowClass(hInstance);PlaySound(L"sound.wav", NULL, SND_FILENAME| SND_ASYNC| SND_LOOP);	//循环播放背景音乐if(!InitInstance(hInstance, nCmdShow))return FALSE;MSG msg = {0};ssage != WM_QUIT) {if(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)){TranslateMessage(&msg);DispatchMessage(&msg);}else{g_tNow = GetTickCount();										//获取系统时间if(g_tNow - g_tPre >= 100){MyDraw(hwnd);g_tPre = GetTickCount();									//记录此次绘图时间}}}return 0;
}int MyWindowClass(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 = NULL;wcex.hCursor = LoadCursor(NULL, IDC_ARROW);wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);wcex.lpszMenuName = NULL;wcex.lpszClassName = L"gamebase";wcex.hIconSm = NULL;return RegisterClassEx(&wcex); 
}BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{hInst = hInstance;hwnd = CreateWindow(L"gamebase", WINDOW_TITLE, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, WINDOW_WIDTH, WINDOW_HEIGHT, NULL, NULL, hInstance, NULL);if(!hwnd)return FALSE;MoveWindow(hwnd, 10, 10, WINDOW_WIDTH, WINDOW_HEIGHT, true);ShowWindow(hwnd, nCmdShow);UpdateWindow(hwnd);hdc = GetDC(hwnd);mdc = CreateCompatibleDC(hdc);bufdc = CreateCompatibleDC(hdc);//首先在内存dc中创建一张图为背景图，用以从bufdc中映射图片，此不可省略HBITMAP bmp = CreateCompatibleBitmap(hdc, WINDOW_WIDTH, WINDOW_HEIGHT);SelectObject(mdc, bmp);//设定人物贴图初始位置和移动方向g_iX = 150;g_iY = 350;g_iDirection = 3;g_iNum = 0;//加载各种跑动图及背景图，这里以0,1,2,3来代表人物的上下左右移动wchar_t filename[20];for(int i = 0; i != 4; ++i){swprintf_s(filename, L"go%d.bmp", i);g_hSprite[i] = (HBITMAP)LoadImage(NULL, filename, IMAGE_BITMAP, 480, 216, LR_LOADFROMFILE);}hBackGround = (HBITMAP)LoadImage(NULL, L"bg.bmp", IMAGE_BITMAP, WINDOW_WIDTH, WINDOW_HEIGHT, LR_LOADFROMFILE);return TRUE;
}LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{PAINTSTRUCT ps;switch(message){case WM_KEYDOWN:										//按下键盘消息switch(wParam)										//判断按键的虚拟键码{case VK_ESCAPE:										//按下【Esc】键DestroyWindow(hwnd);break;case VK_UP:											//按下【上】键g_iY -= 10;if(g_iY < 0)g_iY = 0;g_iDirection = 0;break;case VK_DOWN:										//按下【下】键g_iY += 10;if(g_iY > WINDOW_HEIGHT - 140)g_iY =  WINDOW_HEIGHT - 140;g_iDirection = 1;break;case VK_LEFT:										//按下【左】键g_iX -= 10;if(g_iX < 0)g_iX = 0;g_iDirection = 2;break;case VK_RIGHT:										//按下【右】键g_iX += 10;if(g_iX > WINDOW_WIDTH - 75)g_iX = WINDOW_WIDTH - 75;g_iDirection = 3;break;}break;
/**************************************************************************************************************
在退出程序前，往往在此处删除创建的相关资源
***************************************************************************************************************/case WM_DESTROY:for(int i = 0; i != 4; ++i)DeleteObject(g_hSprite[i]);DeleteObject(hBackGround);DeleteDC(mdc);DeleteDC(bufdc);ReleaseDC(hwnd, hdc);PostQuitMessage(0);break;default:return DefWindowProc(hwnd, message, wParam, lParam);}return 0;
}
/***************************************************************************************************************
在函数MyDraw（）中进行相关绘制工作
****************************************************************************************************************/
void MyDraw(HWND hwnd)
{//先在mdc中贴上背景图//不可直接映射到mdc上，因为之前的位图没法被覆盖SelectObject(bufdc, hBackGround);BitBlt(mdc, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, bufdc, 0, 0, SRCCOPY);//按照目前的移动方向取出对应人物的连续走动图，并确定截取人物图的宽度与高度SelectObject(bufdc, g_hSprite[g_iDirection]);BitBlt(mdc, g_iX, g_iY, 60, 108, bufdc, g_iNum*60, 108, SRCAND);BitBlt(mdc, g_iX, g_iY, 60, 108, bufdc, g_iNum*60, 0, SRCPAINT);//将最后的画面显示在窗口中BitBlt(hdc, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, mdc, 0, 0, SRCCOPY);++g_iNum;														//下一张位图if(g_iNum == 8)g_iNum = 0;
}