LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
static DWORD st = 0;
static DWORD dt = 0;
static DWORD update_dt = 0;
static DWORD update_delay = 10;
static HDC hMainDC = NULL;
static HDC hMemDC = NULL;
static HBITMAP hMemBitmap = NULL;
static HBITMAP hOldMemBitmap = NULL;
static Point ptStart;
static Point ptEnd;
static bool bDrawLine = false;
static std::list<Ball*> marble;
static const int quantity = 4;
if (uMsg == WM_CREATE)
{
Rect rc;
::GetClientRect(hWnd, &rc);
hMainDC = ::GetDC(hWnd);
hMemDC = ::CreateCompatibleDC(hMainDC);
hMemBitmap = ::CreateCompatibleBitmap(hMainDC, rc.width(), rc.height());
hOldMemBitmap = ::Select(hMemDC, hMemBitmap);
for (int i = 0; i < quantity; i++)
{
Ball* pBall = new Ball;
pBall->Attach(hWnd);
pBall->SetSize(15);
if (i == Ball::white)
{
pBall->SetPosition(Point((rc.right - rc.left)/8 * 1, (rc.bottom - rc.top)/2));
pBall->SetColor(RGB(255,255,255));
}
else if (i == Ball::red1)
{
pBall->SetPosition(Point((rc.right - rc.left)/8 * 2, (rc.bottom - rc.top)/2));
pBall->SetColor(RGB(255,0,0));
}
else if (i == Ball::red2)
{
pBall->SetPosition(Point((rc.right - rc.left)/8 * 6, (rc.bottom - rc.top)/2));
pBall->SetColor(RGB(255,0,0));
}
else if (i == Ball::yellow)
{
pBall->SetPosition(Point((rc.right - rc.left)/8 * 6, (rc.bottom - rc.top)/6 * 2));
pBall->SetColor(RGB(255,255,0));
}
marble.push_back(pBall);
} // for (int i = 0; i < quantity; i++)
st = ::GetTickCount();
::SetTimer(hWnd, 0, 10, NULL);
return 0;
}
else if (uMsg == WM_DESTROY)
{
std::list<Ball*>::iterator it;
for (it = marble.begin(); it != marble.end();)
{
delete *it;
it = marble.erase(it);
}
::KillTimer(hWnd, 0);
::Select(hMemDC, hOldMemBitmap);
::DeleteObject(hMemBitmap);
::DeleteDC(hMemDC);
::ReleaseDC(hWnd, hMainDC);
::PostQuitMessage(0);
return 0;
}
else if (uMsg == WM_PAINT)
{
Rect rc;
::GetClientRect(hWnd, &rc);
PAINTSTRUCT ps;
HDC hdc = ::BeginPaint(hWnd, &ps);
::SetDCBrushColor(hMemDC, RGB(80,181,53));
::FillRect(hMemDC, &rc, (HBRUSH)::GetStockObject(DC_BRUSH));
if (bDrawLine)
{
::MoveToEx(hMemDC, ptStart.x, ptStart.y, NULL);
::LineTo(hMemDC, ptEnd.x, ptEnd.y);
}
std::list<Ball*>::iterator it;
for (it = marble.begin(); it != marble.end(); it++)
{
(*it)->Draw(hMemDC);
}
::BitBlt(hdc, 0, 0, rc.width(), rc.height(),
hMemDC, 0, 0, SRCCOPY);
::EndPaint(hWnd, &ps);
return 0;
}
else if (uMsg == WM_ERASEBKGND)
{
return 1;
}
else if (uMsg == WM_LBUTTONDOWN)
{
::GetCursorPos(&ptStart);
ptStart = ptStart.ToClient(hWnd);
ptEnd = ptStart;
std::list<Ball*>::iterator it;
for (it = marble.begin(); it != marble.end(); it++)
{
(*it)->CheckShoot(ptStart);
}
bDrawLine = true;
return 0;
}
else if (uMsg == WM_MOUSEMOVE)
{
if (bDrawLine)
{
::GetCursorPos(&ptEnd);
ptEnd = ptEnd.ToClient(hWnd);
Rect rc;
::GetClientRect(hWnd, &rc);
::InvalidateRect(hWnd, &rc, TRUE);
}
return 0;
}
else if (uMsg == WM_LBUTTONUP)
{
bDrawLine = false;
::GetCursorPos(&ptEnd);
ptEnd = ptEnd.ToClient(hWnd);
std::list<Ball*>::iterator it;
for (it = marble.begin(); it != marble.end(); it++)
{
(*it)->SetDirection(Vector(ptEnd - ptStart) / 10);
}
return 0;
}
else if (uMsg == WM_TIMER)
{
Rect rc;
::GetClientRect(hWnd, &rc);
if (update_dt > update_delay)
{
int count = update_dt / update_delay;
for (int i = 0; i < count; i++)
{
std::list<Ball*>::iterator it;
for (it = marble.begin(); it != marble.end(); )
{
(*it)->Input(dt);
(*it)->Update(dt, marble);
it++;
}
}
update_dt %= update_delay;
}
update_dt += dt;
dt = ::GetTickCount() - st;
st = ::GetTickCount();
::InvalidateRect(hWnd, &rc, TRUE);
return 0;
}
return ::DefWindowProc(hWnd,uMsg,wParam,lParam);
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
static DWORD st = 0;
static DWORD dt = 0;
static DWORD update_dt = 0;
static DWORD update_delay = 20;
static HDC hMainDC = NULL;
static HDC hMemDC = NULL;
static HBITMAP hMemBitmap = NULL;
static HBITMAP hOldMemBitmap = NULL;
static bool bDrawLine = false;
static Point ptStart;
static Point ptEnd;
if (uMsg == WM_CREATE)
{
Rect rc;
::GetClientRect(hWnd, &rc);
hMainDC = ::GetDC(hWnd);
hMemDC = ::CreateCompatibleDC(hMainDC);
hMemBitmap = ::CreateCompatibleBitmap(hMainDC, rc.width(), rc.height());
hOldMemBitmap = ::Select(hMemDC, hMemBitmap);
BallDepot.Attach(hWnd);
st = ::GetTickCount();
::SetTimer(hWnd, 1, 10, NULL);
return 0;
}
else if (uMsg == WM_DESTROY)
{
BallDepot.clear();
::KillTimer(hWnd, 1);
::Select(hMemDC, hOldMemBitmap);
::DeleteObject(hMemBitmap);
::DeleteDC(hMemDC);
::ReleaseDC(hWnd, hMainDC);
::PostQuitMessage(0);
return 0;
}
else if (uMsg == WM_PAINT)
{
Rect rc;
::GetClientRect(hWnd, &rc);
PAINTSTRUCT ps;
HDC hdc = ::BeginPaint(hWnd, &ps);
// TODO
::SetDCBrushColor(hMemDC, RGB(100,100,150));
::FillRect(hMemDC, &rc, (HBRUSH)::GetStockObject(DC_BRUSH));
if (bDrawLine)
{
::MoveToEx(hMemDC, ptStart.x, ptStart.y, NULL);
::LineTo(hMemDC, ptEnd.x, ptEnd.y);
}
BallDepot.Draw(hMemDC);
::BitBlt(hdc, 0, 0, rc.width(), rc.height(),
hMemDC, 0, 0, SRCCOPY);
::EndPaint(hWnd, &ps);
return 0;
}
else if (uMsg == WM_ERASEBKGND)
{
return 1;
}
else if (uMsg == WM_LBUTTONDOWN)
{
::GetCursorPos(&ptStart);
ptStart = ptStart.ToClient(hWnd);
ptEnd = ptStart;
bDrawLine = true;
return 0;
}
else if (uMsg == WM_MOUSEMOVE)
{
if (bDrawLine)
{
::GetCursorPos(&ptEnd);
ptEnd = ptEnd.ToClient(hWnd);
Rect rc;
::GetClientRect(hWnd, &rc);
::InvalidateRect(hWnd, &rc, TRUE);
}
return 0;
}
else if (uMsg == WM_LBUTTONUP)
{
bDrawLine = false;
::GetCursorPos(&ptEnd);
ptEnd = ptEnd.ToClient(hWnd);
if (ptStart == ptEnd) return 0;
Ball* pBall = new Ball;
pBall->Attach(hWnd);
pBall->SetDirection(Vector(ptEnd - ptStart)/5);
pBall->SetSize(20);
pBall->SetPosition(ptStart);
BallDepot.push(pBall);
return 0;
}
else if (uMsg == WM_TIMER)
{
Rect rc;
::GetClientRect(hWnd, &rc);
// TODO...
BallDepot.Input(dt);
BallDepot.Update(dt);
dt = ::GetTickCount() - st;
st = ::GetTickCount();
::InvalidateRect(hWnd, &rc, TRUE);
return 0;
}
return ::DefWindowProc(hWnd,uMsg,wParam,lParam);
}
