GameEngine 基础入门 c++

来源：互联网发布：华为软件精英挑战赛编辑：程序博客网时间：2024/05/22 14:27

今天是我第一次写博客，也为了促进自己的学习！！！！！

我以《游戏编程入门》这本书作为教材学习游戏编程。本书的作者是Michael Morrison著。我使用的是vc6++里面的编译器，作为不太大的游戏，要想学习里面的原理，我使用的是VIM文本编辑器。至于如何配置和利用VIM来写工程代码，我将在日后的博客里会写到。

搞了很多天，vim 还是不会怎么用，还是用mic 的vc6 直观，学会偷懒了呵呵。现在附上代码：

GameEngine.h GameEngine.cpp

# pragma once
//-----------------------------------------
//包含文件
//-----------------------------------------
# include <windows.h>
//-----------------------------------------
//window 函数声明
//-----------------------------------------
int WINAPI WinMain(HINSTANCE hInsce, HINSTANCE hPeInsce,
PSTR szCmdLine, int icmdShow);
//-------------------------------------------
//引擎类
//-------------------------------------------
class GameEngine
{
public:
//构造函数
GameEngine(HINSTANCE hInsce, LPSTR szwndClass, LPSTR szTle,
WORD wIcon, WORD wSmlIcon, int iWidth = 800, int Height = 600);
virtual ~GameEngine();

static GameEngine* GetEngine() {return m_pGameEngine; };
BOOL  Init(int icmdShow);
LRESULT  HandleEvent(HWND hwnd, UINT msg, WPARAM wp,
      LPARAM lp);
//访问方法
HINSTANCE  GetInstance() {return m_hInsce; };
HWND            GetWnd() {return m_hwnd; };
void                SetWnd(HWND hwnd) {m_hwnd = hwnd; };
LPSTR           GetTitle() {return m_szTle;};
WORD           GetIcon() {return m_wIcon; };
WORD           GetSmallIcon() {return m_smlIcon; };
int                   GetWidth() {return m_iWidth; };
int                 GetHeight() {return m_iHeight; };
int                  GetFrameDelay() {return m_iFrameDelay; };
void               SetFrameRate(int iFrameRate) {m_iFrameDelay = 1000 /
                       iFrameRate; };
BOOL              GetSleep() {return m_bSleep; };
void               SetSleep(BOOL bSleep) {m_bSleep = bSleep; };
protected:
static GameEngine* m_pGameEngine;
HINSTANCE  m_hInsce;
HWND    m_hwnd;
TCHAR     m_szwndClass[32];
TCHAR     m_szTle[32];
WORD      m_wIcon, m_smlIcon;
int           m_iWidth, m_iHeight;
int             m_iFrameDelay;
BOOL    m_bSleep;
};
# include "GameEngine.h"
# include "resource.h"
//----------------------------------
//静态变量初始化
//-----------------------------------
GameEngine* GameEngine::m_pGameEngine = NULL;
GameEngine* g_pGame = NULL;
//------------------------------------------
//游戏引擎函数声明和定义
//-------------------------------------------
BOOL GameInit(HINSTANCE hInsce)
{
g_pGame = new GameEngine(hInsce, TEXT("billzzard"), TEXT("billzzard"), IDI_BLIZZARD, IDI_BLIZZARD_SM);

if(NULL == g_pGame)
  return FALSE;

g_pGame -> SetFrameRate(15);
return TRUE;

};
void GameStart(HWND hwnd)
{//生成随机数
srand(GetTickCount());
};
void GameEnd()
{
//清理游戏引擎
delete g_pGame;
};
void GameActivate(HWND hwnd)
{
HDC     hdc;
RECT    rct;
//绘制文本
GetClientRect(hwnd, &rct);
hdc = GetDC(hwnd);
DrawText(hdc, TEXT("here the blizzard!"), -1 , &rct,
DT_SINGLELINE | DT_CENTER | DT_VCENTER);
ReleaseDC(hwnd, hdc);
};
void GameDeactive(HWND hwnd)
{

HDC     hdc;
RECT    rct;

//绘制文本
GetClientRect(hwnd, &rct);
hdc     =     GetDC(hwnd);
DrawText(hdc, TEXT("here the blizzard is passed!"), -1 , &rct,
  DT_SINGLELINE | DT_CENTER | DT_VCENTER);
ReleaseDC(hwnd, hdc);

};
void GamePaint(HDC hdc)
{
};
void GameCycle()
{

HDC hdc;
HWND hwnd = g_pGame -> GetWnd();
//随机出现雪花

hdc = GetDC(hwnd);
DrawIcon(hdc, rand() % g_pGame -> GetWidth(), rand() % g_pGame ->GetHeight(),
(HICON)(WORD)GetClassLong(hwnd, GCL_HICON));
ReleaseDC(hwnd, hdc);
};
//------------------------------------
//window 函数
//------------------------------------
int WINAPI WinMain(HINSTANCE hInsce, HINSTANCE hPeInsce,
PSTR szCmdLine, int icmdShow)
{
MSG msg;
static int iTickTrigger = 0;
int iTickCount;
if(GameInit(hInsce))
{
   //初始化游戏引擎
   if(!GameEngine::GetEngine() ->Init(icmdShow))
    return FALSE;
   //进入主消息循环
   while(TRUE)
   {
    if(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
    {
     //处理消息
     if(msg.message == WM_QUIT)
      break;
     TranslateMessage(&msg);
     DispatchMessage(&msg);
    }
    else
    {
     //确保游戏引擎没有休眠
     if(!GameEngine::GetEngine() ->GetSleep())
     {
      //检查滴答计数，查看是否过了一个周期
      iTickCount = GetTickCount();
      if(iTickCount > iTickTrigger)
      {
       iTickTrigger = iTickCount +
        GameEngine::GetEngine() ->GetFrameDelay();
       GameCycle();
      }
     }
    }
   }
   return (int)msg.wParam;
}
//结束游戏
GameEnd();
return TRUE;
}
LRESULT CALLBACK wpoc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
{
//将所有消息传递给引擎
return GameEngine::GetEngine() ->HandleEvent(hwnd, msg, wp, lp);
}
GameEngine::GameEngine(HINSTANCE hInsce, LPSTR szwndClass, LPSTR szTle,
        WORD wIcon, WORD wSmlIcon, int iWidth /* = 800 */, int Height /* = 600 */)
{
//设置游戏引擎成员变量
m_pGameEngine = this;
m_hInsce = hInsce;
m_hwnd   = NULL;
if(lstrlen(szwndClass) > 0)
  lstrcpy(m_szwndClass, szwndClass);
if(lstrlen(szTle) > 0)
lstrcpy(m_szTle, szTle);
m_wIcon = wIcon;
m_smlIcon = wSmlIcon;
m_iWidth = iWidth;
m_iHeight = Height;
m_iFrameDelay = 50;
m_bSleep = TRUE;
}
GameEngine::~GameEngine()
{
}
//---------------------------
//游戏引擎常规方法
//---------------------------
BOOL GameEngine::Init(int cmdShow)
{
WNDCLASSEX wnd;
wnd.cbSize    = sizeof(wnd);
wnd.style    = CS_HREDRAW | CS_VREDRAW;
wnd.lpfnWndProc   = wpoc;
wnd.cbClsExtra   = 0;
wnd.cbWndExtra   = 0;
wnd.hInstance   = m_hInsce;
wnd.hIcon    = LoadIcon(m_hInsce,
  MAKEINTRESOURCE(GetIcon()));
wnd.hIconSm    = LoadIcon(m_hInsce,
  MAKEINTRESOURCE(GetSmallIcon()));
wnd.hCursor    = LoadCursor(NULL, IDC_ARROW);
wnd.hbrBackground  = (HBRUSH)(COLOR_WINDOW + 1);
wnd.lpszMenuName  = NULL;
wnd.lpszClassName  = m_szwndClass;
if(!RegisterClassEx(&wnd))
return FALSE;
m_hwnd = CreateWindow(m_szwndClass, m_szTle, WS_POPUPWINDOW |
WS_CAPTION | WS_MINIMIZEBOX, 120, 120, 800, 600, NULL, NULL, m_hInsce, NULL);
if(!m_hwnd)
return FALSE;
//显示和跟新窗口
ShowWindow(m_hwnd, cmdShow);
UpdateWindow(m_hwnd);
return TRUE;
}
LRESULT GameEngine::HandleEvent(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
{
//将Windows消息传递给游戏引擎成员函数
switch(msg)
{
case WM_CREATE:
  //设置游戏窗口并开始游戏
  SetWnd(hwnd);
  GameStart(hwnd);
  return 0;
case WM_SETFOCUS:
  //激活并更新休眠状态
  GameActivate(hwnd);
  SetSleep(FALSE);
  return 0;
case WM_KILLFOCUS:
  //停用游戏并跟新
  GameDeactive(hwnd);
  SetSleep(TRUE);
  return 0;
case WM_PAINT:
  HDC  hdc;
  PAINTSTRUCT  ps;
  hdc = BeginPaint(hwnd, &ps);
//绘制游戏
GamePaint(hdc);
EndPaint(hwnd, &ps);
return 0;
case WM_DESTROY:
  //结束游戏并退出游戏
  GameEnd();
  PostQuitMessage(0);
  return 0;
}
return DefWindowProc(hwnd, msg, wp, lp);

}
基本添加资源的方法在网上都有教的，就是在自己的工程文件夹下新建。。。。rc 然后插入你的图片资源然后编译 rc文件，就会出现resource.h
it is too late
go to sleep!!!ZZZ