System_Initiate

最新推荐文章于 2025-08-21 10:49:32 发布

原创最新推荐文章于 2025-08-21 10:49:32 发布 · 702 阅读

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#system #null #application #class #os #windows

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本文详细介绍了游戏引擎启动过程中的关键步骤，包括系统的初始化、窗口创建、子系统的启动等，并展示了具体的实现代码片段。

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bool System_Initiate();

初始化所有硬件、软件的时候需要运行引擎并开启应用程序窗口。

bool CALL HGE_Impl::System_Initiate()
{

OSVERSIONINFO os_ver; //操作系统版本
SYSTEMTIME  tm; //时间
MEMORYSTATUS mem_st; //内存分配情况
WNDCLASS  winclass; //窗体
int    width, height;

// Log system info

System_Log("HGE Started../n");

System_Log("HGE version: %X.%X", HGE_VERSION>>8, HGE_VERSION & 0xFF);
GetLocalTime(&tm); //获取当前时间
System_Log("Date: %02d.%02d.%d, %02d:%02d:%02d/n", tm.wDay, tm.wMonth, tm.wYear, tm.wHour, tm.wMinute, tm.wSecond);

System_Log("Application: %s",szWinTitle);
os_ver.dwOSVersionInfoSize=sizeof(os_ver); //初始化操作系统结构体
GetVersionEx(&os_ver); //获取当前操作系统版本
System_Log("OS: Windows %ld.%ld.%ld",os_ver.dwMajorVersion,os_ver.dwMinorVersion,os_ver.dwBuildNumber);

GlobalMemoryStatus(&mem_st); //获取当前内存使用情况
System_Log("Memory: %ldK total, %ldK free/n",mem_st.dwTotalPhys/1024L,mem_st.dwAvailPhys/1024L);

// 注册窗体

winclass.style = CS_DBLCLKS | CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
winclass.lpfnWndProc = WindowProc;
winclass.cbClsExtra  = 0;
winclass.cbWndExtra  = 0;
winclass.hInstance  = hInstance;
winclass.hCursor  = LoadCursor(NULL, IDC_ARROW);
winclass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
winclass.lpszMenuName = NULL;
winclass.lpszClassName = WINDOW_CLASS_NAME;
if(szIcon) winclass.hIcon = LoadIcon(hInstance, szIcon);
else winclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);

if (!RegisterClass(&winclass)) {
  _PostError("Can't register window class");
  return false;
}

// 创建窗体

width=nScreenWidth + GetSystemMetrics(SM_CXFIXEDFRAME)*2;
height=nScreenHeight + GetSystemMetrics(SM_CYFIXEDFRAME)*2 + GetSystemMetrics(SM_CYCAPTION);

rectFS.left=0;
rectFS.top=0;
rectFS.right=nScreenWidth;
rectFS.bottom=nScreenHeight;
styleFS=WS_POPUP|WS_VISIBLE; //WS_POPUP

if(hwndParent)
{
  rectW.left=0;
  rectW.top=0;
  rectW.right=nScreenWidth;
  rectW.bottom=nScreenHeight;
  styleW=WS_CHILD|WS_VISIBLE;
  bWindowed=true;
}

if(bWindowed)
  hwnd = CreateWindowEx(0, WINDOW_CLASS_NAME, szWinTitle, styleW,
    rectW.left, rectW.top, rectW.right-rectW.left, rectW.bottom-rectW.top,
    hwndParent, NULL, hInstance, NULL);
else
  hwnd = CreateWindowEx(WS_EX_TOPMOST, WINDOW_CLASS_NAME, szWinTitle, styleFS,
    0, 0, 0, 0,
    NULL, NULL, hInstance, NULL);
if (!hwnd)
{
  _PostError("Can't create window");
  return false;
}

ShowWindow(hwnd, SW_SHOW);

// Init subsystems

timeBeginPeriod(1); //多媒体时间,初始化时间间隔为1ms
Random_Seed(); //产生随机种子,默认为时间
_InitPowerStatus(); //更新当前电源属性
_InputInit(); //初始化键盘和鼠标值
if(!_GfxInit()) { System_Shutdown(); return false; } //初始化dx8
if(!_SoundInit()) { System_Shutdown(); return false; } //初始化多媒体库bass.dll

System_Log("Init done./n");

fTime=0.0f;
t0=t0fps=timeGetTime();
dt=cfps=0;
nFPS=0;

// Show splash

// Done

return true;
}