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Writing a game

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Hi there,

So I've started to write a Game Engine to write my game with.
I'll post some code sometimes with some explanation to keep you all updated.

[spoiler][code]
/////////////////////////////////////////////////////////////////////////////////
// Entry point of the application
/////////////////////////////////////////////////////////////////////////////////
int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow )
{
// Avoid warnings of not-used parameters
////////////////////////////////////////////////////////////////////////////
UNREFERENCED_PARAMETER( hPrevInstance );
UNREFERENCED_PARAMETER( lpCmdLine );

// Allocate the object of the GameEngine
////////////////////////////////////////////////////////////////////////////
GameEngine engine(hInstance, nCmdShow );

// Attemp to initialize the GameEngine
////////////////////////////////////////////////////////////////////////////
if( engine.Initialize( _T("GameEngine"), 640, 480, false, 60 ) == false )
{
return -1;
}

engine.GoFullscreenMode(); // Go to fullscreen mode
// Enter the GameLoop
////////////////////////////////////////////////////////////////////////////
while( engine.ProcessMessages() )
{
engine.BeginRender();

// Update & Draw stuff
////////////////////////////////////////////////////////////////////////
engine.SetColor( RGB(100,0,0));
engine.DrawRect(10,10,100,100, 3);
engine.DrawLine(0,0,640,480, 2);

engine.SetColor( RGB(0,0,50));
engine.DrawEllipse(130,100,250,200,50);

engine.SetColor( RGB(0,200,0));
engine.SetFont("verdana", true, false, true, 20);
engine.DrawText("Test",100,400);

if( engine.IsLeftButtonDoubleClicked() ) // if you double-click the left mouse button go back to windowed mode
engine.GoWindowedMode();

engine.EndRender();
}

// Close the application
////////////////////////////////////////////////////////////////////////////
return 0;
}
[/code][/spoiler]

The following code is from the WndProc, how I handle on some interesting events:
[spoiler][code]

case WM_MOUSEMOVE:
RECT windowRect;
GetWindowRect( hWnd, &windowRect );
POINT pt;
GetCursorPos( &pt );

pt.x -= windowRect.left;
pt.y -= windowRect.top;

pEngine->SetMousePos(pt);
return 0;

case WM_MOUSEWHEEL:
pEngine->SetWheelPos( GET_WHEEL_DELTA_WPARAM(wParam));
return 0;

case WM_LBUTTONDBLCLK:
pEngine->IsLeftButtonDoubleClicked(true);

[/code][/spoiler]

I can handle double mouse-clicks too. For this you need to add a style into the WndClass.
[code]
WNDCLASS wndClass;
WndClass.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
[/code]

I'm controlling whole my game with 1 object. The GameEngine object
But Instead of writing hundreds lines of code into 1 class I wrote some extra classes:
[code]class GameEngine: public ResourceLoader, public InputState, public Painter[/code]

I don't like to overload the processor and I would like to work with a framerate so in the ProcessMessages method I'll let the application sleep for (1000 / framerate) if there are no messages.


So if there are any questions about my code, how I go to fullscreen and back to windowed mode, just ask.
And if there are some suggestions about some code, just tell. :wink:



pm: this topic should not be closed till my game is finished, what will take some months. I would love to keep posting all my progress here if that's ok.

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Maybe you should consider a blog, a forum is not meant for this kind of stuff and a blog can never hurt
I'm not a mod of course, so I'm not sure whether they'll allow this

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Yes, any site member can start a developer journal and it really is the best place to collect things like this.

Post something good and you might even get features on the front page :D

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Go to http://www.wordpress.com for free and reliable blog hosting. I have since moved my site on to a separate domain (http://noogai03.co.uk/wordpress), but it was great when I used it.
It will be www.[NAME HERE].wordpress.com, with no ads.
You can also try www.blogger.com, which is good, but not as good.
Hope this helps
Noogai03

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