#include <windows.h>
#include <d3d9.h>
#include <d3dx9.h>


LPDIRECT3D9 d3d=0;
LPDIRECT3DDEVICE9 d3ddev=0;
bool quit_game=0;

bool SetupD3D(HWND hWnd)
{
	//create D3D object
	d3d=Direct3DCreate9(D3D_SDK_VERSION);
	if(!d3d) return FALSE;

	//create device
	D3DPRESENT_PARAMETERS d3dpp;
	ZeroMemory(&d3dpp, sizeof(d3dpp));
	d3dpp.BackBufferWidth=800;
	d3dpp.BackBufferHeight=600;
	d3dpp.BackBufferFormat=D3DFMT_A8R8G8B8;
	d3dpp.BackBufferCount=1;
	d3dpp.MultiSampleType=D3DMULTISAMPLE_NONE;
	d3dpp.MultiSampleQuality=0;
	d3dpp.SwapEffect=D3DSWAPEFFECT_DISCARD;
	d3dpp.hDeviceWindow=hWnd;
	d3dpp.Windowed=FALSE;
	d3dpp.EnableAutoDepthStencil=TRUE;
	d3dpp.AutoDepthStencilFormat=D3DFMT_D16;
	d3dpp.Flags=0;
	d3dpp.FullScreen_RefreshRateInHz=D3DPRESENT_RATE_DEFAULT;
	d3dpp.PresentationInterval=D3DPRESENT_INTERVAL_IMMEDIATE;
	d3d->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL ,
		hWnd, D3DCREATE_HARDWARE_VERTEXPROCESSING,
		 &d3dpp, &d3ddev);
	if(!d3ddev) {return FALSE;}


    return TRUE;
}

void CleanupD3D()
{
	if(d3ddev) {d3ddev->Release(); }
	if(d3d) {d3d->Release(); }

}

bool DrawD3D()
{
	if(!d3ddev) return FALSE;


	d3ddev->Clear(0, 0, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 0xffccccff, 1.0f, 0);
	d3ddev->Present(0, 0, 0, 0);


	return TRUE;
}


///////////////////////////////////////////////////////////////
///////////////////////////WINDOWS FUNCTIONS///////////////////
///////////////////////////////////////////////////////////////

LRESULT WINAPI WinProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	switch(msg)
	{

	case WM_CLOSE:
		DestroyWindow(hWnd);
		return 0;
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	case WM_KEYUP:
		if(wParam==VK_ESCAPE)
		{
			PostQuitMessage(0);
		}
		return 0;

	}

	return DefWindowProc(hWnd, msg, wParam, lParam);
}


INT WINAPI WinMain(HINSTANCE hInst, HINSTANCE, LPSTR, INT)
{
	WNDCLASS wc;
	wc.cbClsExtra=0;
	wc.cbWndExtra=0;
	wc.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);
	wc.hCursor=LoadCursor(0, IDC_ARROW);
	wc.hIcon=LoadIcon(0, IDI_APPLICATION);
	wc.hInstance=hInst;
	wc.lpfnWndProc=WinProc;
	wc.lpszClassName="synth";
	wc.lpszMenuName=0;
	wc.style=CS_HREDRAW | CS_VREDRAW;
	RegisterClass(&wc);
	HWND hwnd=CreateWindow("synth", "the_synth", WS_VISIBLE | WS_OVERLAPPEDWINDOW, 100, 100,
		800, 600, 0, 0, hInst, 0);
    
	//setup stuff
	if(!SetupD3D(hwnd))
	{
		MessageBox(hwnd,"setup_d3d() failed","error",MB_OK);
		quit_game=1;
	}

	MSG msg;
	ZeroMemory(&msg, sizeof(msg));
	while(msg.message!=WM_QUIT)
	{
		if(PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
		else
		{

			if(quit_game)
			{
				PostQuitMessage(0);
				break;
			}

			DrawD3D();

		}
	}

	UnregisterClass("synth", hInst);
	CleanupD3D();
	return 0;
}

UnregisterClass("synth", hInst);CleanupD3D();return 0;

if(hwnd){    DrawD3D();}

CleanupD3D();UnregisterClass("synth", hInst);

UnregisterClass("synth", hInst);CleanupD3D();