#define WIN32_LEAN_AND_MEAN
#include<windows.h>
int ballx;
int bally;
HINSTANCE gInstance;
HWND ghwnd;
void initWindow();
void killWindow();
void initBall();
void initPaddle();
void moveBall();
void movePaddle();
void drawBall();
void drawPaddle();
void MessageHandler();
const int height = 480;
const int width = 640;
const int paddlewidth = 40;
const int paddleheight = 10;
const int ballradius = 5;
int pb = 440 , pt = 430, pl = 300, pr = 340;
int topy;
int topl;
bool gameover = false;
MSG msg;
HDC hdc;
RECT rect;
RECT winrect;
LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam){
	switch(msg){
	case WM_DESTROY:
		gameover = true;
		break;
	case WM_KEYDOWN:
		switch(wParam){
		case 37:
			pl -= 10;
			pr -= 10;
			break;
		case 39:
			pl += 10;
			pr += 10;
			break;
		}
		break;
	}
	return DefWindowProc(hwnd,msg,wParam,lParam);
}
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,PSTR CmdLine,int iCmd){
	gInstance = hInstance;
	hdc = GetDC(ghwnd);
	GetClientRect(ghwnd,&winrect);
	initWindow();
	initBall();
	initPaddle();
	while(!gameover){
		MessageHandler();
		FillRect(hdc,&winrect,(HBRUSH)GetStockObject(WHITE_BRUSH));
		moveBall();
		movePaddle();
		drawBall();
		drawPaddle();
	}
	killWindow();
	return msg.wParam;
}
void initWindow(){
	WNDCLASS wc;
	wc.cbClsExtra = 0;
	wc.cbWndExtra = 0;
	wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
	wc.hCursor = LoadCursor(NULL,IDC_ARROW);
	wc.hIcon = LoadIcon(NULL,IDI_APPLICATION);
	wc.hInstance = gInstance;
	wc.lpfnWndProc = WndProc;
	wc.lpszClassName = "Class";
	wc.lpszMenuName = NULL;
	wc.style = NULL;
	RegisterClass(&wc);
	ghwnd = CreateWindow("Class","Pong",WS_OVERLAPPEDWINDOW,0,0,width,height,NULL,NULL,gInstance,NULL);
	ShowWindow(ghwnd,SW_SHOW);
	UpdateWindow(ghwnd);
}
void killWindow(){
}
void initBall(){
	ballx = 2;
	bally = 2;
}
void initPaddle(){
}
void drawBall(){	
}
void drawPaddle(){	
	rect.bottom = pb;
	rect.top = pt;
	rect.left = pl;
	rect.right = pr;
	FillRect(hdc,&rect,(HBRUSH)GetStockObject(BLACK_BRUSH));
}
void moveBall(){
}
void movePaddle(){
}
void MessageHandler(){
	MSG msg;
	if(PeekMessage(&msg,ghwnd,0,0,PM_REMOVE)){
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
}