blizzard.cpp

来自「游戏开发入门」· C++ 代码 · 共 81 行

//-----------------------------------------------------------------
// Blizzard Application
// C++ Source - Blizzard.cpp
//-----------------------------------------------------------------

//-----------------------------------------------------------------
// Include Files
//-----------------------------------------------------------------
#include "Blizzard.h"

//-----------------------------------------------------------------
// Game Engine Functions
//-----------------------------------------------------------------
BOOL GameInitialize(HINSTANCE hInstance)
{
  // Create the game engine
  g_pGame = new GameEngine(hInstance, TEXT("Blizzard"),
    TEXT("Blizzard"), IDI_BLIZZARD, IDI_BLIZZARD_SM);
  if (g_pGame == NULL)
    return FALSE;
  
  // Set the frame rate
  g_pGame->SetFrameRate(15);

  return TRUE;
}

void GameStart(HWND hWindow)
{
  // Seed the random number generator
  srand(GetTickCount());
}

void GameEnd()
{
  // Cleanup the game engine
  delete g_pGame;
}

void GameActivate(HWND hWindow)
{
  HDC   hDC;
  RECT  rect;

  // Draw activation text on the game screen
  GetClientRect(hWindow, &rect);
  hDC = GetDC(hWindow);
  DrawText(hDC, TEXT("Here comes the blizzard!"), -1, &rect,
    DT_SINGLELINE | DT_CENTER | DT_VCENTER);
  ReleaseDC(hWindow, hDC);
}

void GameDeactivate(HWND hWindow)
{
  HDC   hDC;
  RECT  rect;

  // Draw deactivation text on the game screen
  GetClientRect(hWindow, &rect);
  hDC = GetDC(hWindow);
  DrawText(hDC, TEXT("The blizzard has passed."), -1, &rect,
    DT_SINGLELINE | DT_CENTER | DT_VCENTER);
  ReleaseDC(hWindow, hDC);
}

void GamePaint(HDC hDC)
{
}

void GameCycle()
{
  HDC   hDC;
  HWND  hWindow = g_pGame->GetWindow();

  // Draw the snowflake icon at random positions on the game screen
    hDC = GetDC(hWindow);
    DrawIcon(hDC, rand() % g_pGame->GetWidth(), rand() % g_pGame->GetHeight(),
      (HICON)(WORD)GetClassLong(hWindow, GCL_HICON));
    ReleaseDC(hWindow, hDC);
}