#include "mvx.h"

LRESULT CALLBACK WindowProc(HWND hwnd, 
						    UINT msg, 
                            WPARAM wparam, 
                            LPARAM lparam)
{
	// this is the main message handler of the system
	PAINTSTRUCT		ps;		// used in WM_PAINT
	HDC				hdc;	// handle to a device context

	// what is the message 
	switch(msg)
	{	
		case WM_CREATE: 
        {
			// do initialization stuff here
	        // return success
			return(0);
		} break;
   
		case WM_PAINT: 
		{
			// simply validate the window 
   			hdc = BeginPaint(hwnd,&ps);	 
	        
			// end painting
			EndPaint(hwnd,&ps);

			// return success
			return(0);
   		} break;

		case WM_DESTROY: 
		{
			// kill the application, this sends a WM_QUIT message 
			PostQuitMessage(0);

			// return success
			return(0);
		} break;

		default:break;

    } // end switch

	// process any messages that we didn't take care of 
	return (DefWindowProc(hwnd, msg, wparam, lparam));

} // end WinProc

// the default viewport
mvxViewport View(D3DXVECTOR2(0, 0), D3DXVECTOR2(640, 480));

int WINAPI WinMain(	HINSTANCE hinstance,
					HINSTANCE hprevinstance,
					LPSTR lpcmdline,
					int ncmdshow)
{
	ShowCursor(false);

	// windows message
	MSG msg;

	mvxEngine Engine;

	// set what you want
	Engine.mvxWidth    =  640;
	Engine.mvxHeight   =  480;

	// we dont want a windowed app
	Engine.mvxWindowed = false;

	// set to true if you want to use them
	// we dont need any for this example
	Engine.mvxAudio    = false;
	Engine.mvxDInput   = false;
	Engine.mvxDebug    = false;

	// then init the engine
	Engine.mvxInit(hinstance);


	// create your mvxImages here
	mvxImage myImage;
	// load the image
	myImage.mvxCreate(Engine.mvxDevice, "happyball.bmp");
	// set the rotate center of the image
	myImage.mvxSetCenter(16, 16);
	// simple as that

	// create a coordinate for the ball
	D3DXVECTOR2 location(0, 0);
	// create a velocity
	D3DXVECTOR2 velocity(.5, .5);
	// and an  angle
	float ang = 0;

	// enter main event loop
	while(TRUE)
	{
		// test if there is a message in queue, if so get it
		if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))
		{ 
			// test if this is a quit
			if (msg.message == WM_QUIT)
				break;

			// translate any accelerator keys
			TranslateMessage(&msg);

			// send the message to the window proc
			DispatchMessage(&msg);
		} // end if	

		// prepare to render
		Engine.mvxClear(mvxRGB(0,0,0));

		Engine.mvxBegin();

		// render stuff here
		// now here we render out happy ball
		myImage.mvxRenderThis(NULL, NULL, &myImage.mvxRotationCenter, ang, &location, D3DCOLOR_ARGB(255, 255, 255, 0));

		location += velocity;

		if (location.x < 0)
		{
			velocity.x *= -1;
		}
		if (location.x + 32 > 640)
		{
			velocity.x *= -1;
		}

		if (location.y < 0)
		{
			velocity.y *= -1;
		}
		if (location.y + 32 > 480)
		{
			velocity.y *= -1;
		}

		// rotate the ball
		ang += .007f;

		Engine.mvxEnd();

		Engine.mvxShow();

		// exit
		if (mvxKEYDOWN(VK_ESCAPE))
			SendMessage(Engine.mvxMWH, WM_CLOSE, 0, 0);
	}

	// now destroy the ball
	myImage.mvxDestroy();
	// thats all

	Engine.mvxDestroy();

	// return to Windows like this
	return(msg.wParam);
}