#define WIN32_LEAN_AND_MEAN
#include<windows.h>
HDC hdc;
class CGame{
public:
	CGame(){
		Gameover = false;
	}
	bool Gameover;
}Game;

class CPaddle{
private:
	int x;
	int y;
	int xchange;
	int ychange;
	RECT paddle;
public:
	CPaddle(){
		paddle.left = 300;
		paddle.right = 340;
		paddle.top = 430;
		paddle.bottom = 440;
		x = 320;
		y = 435;
		xchange = 0;
		ychange = 0;
	}
	int getX(){
		return x;
	}
	int getY(){
		return y;
	}
	void setX(int newx){
		x = newx;
	}
	void setY(int newy){
		y = newy;
	}
	int getXChange(){
		return xchange;
	}
	int getYChange(){
		return ychange;
	}
	void setXChange(int change){
		xchange = change;
	}
	void setYChange(int change){
		ychange = change;
	}
	void movePaddle(){
		x += xchange;
		y += ychange;
		xchange = 0;
		ychange = 0;
	}
	void drawPaddle(HBRUSH brush){
		paddle.left = x - 20;
		paddle.right = x + 20;
		paddle.top = y + 5;
		paddle.bottom = y - 5;
		FillRect(hdc,&paddle,brush);
	}
}paddle;
class CBall{
private:
	int x;
	int y;
	int xchange;
	int ychange;
public:
	CBall(){
		x = 320;
		y = 435;
		xchange = 0;
		ychange = 0;
	}
	int getX(){
		return x;
	}
	int getY(){
		return y;
	}
	void setX(int newx){
		x = newx;
	}
	void setY(int newy){
		y = newy;
	}
	int getXChange(){
		return xchange;
	}
	int getYChange(){
		return ychange;
	}
	void setXChange(int change){
		xchange = change;
	}
	void setYChange(int change){
		ychange = change;
	}
	void moveBall(){
		x += xchange;
		y += ychange;
		xchange = 0;
		ychange = 0;
	}
	void drawBall(HBRUSH brush){
		SelectObject(hdc,(HPEN)GetStockObject(BLACK_PEN));
		SelectObject(hdc,brush);
		Ellipse(hdc,x,y,x+10,y+10);
	}
}ball;
LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wParam, LPARAM lParam){
	switch(msg){
	case WM_DESTROY:
		Game.Gameover = true;
		break;
	case WM_KEYDOWN:
		switch(wParam){
		case 37:
			paddle.drawPaddle((HBRUSH)GetStockObject(WHITE_BRUSH));
			paddle.setXChange(-5);
			break;
		case 38:
			SelectObject(hdc,(HPEN)GetStockObject(WHITE_PEN));
			SelectObject(hdc,(HBRUSH)GetStockObject(WHITE_BRUSH));
			Ellipse(hdc,ball.getX(),ball.getY(),ball.getX()+10,ball.getY()+10);
			ball.setYChange(-20);
			break;
		case 39:
			paddle.drawPaddle((HBRUSH)GetStockObject(WHITE_BRUSH));
			paddle.setXChange(5);
			break;
		}
		break;
	}
	return DefWindowProc(hwnd,msg,wParam,lParam);
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hp,PSTR CmdLine,int iCmd){
	WNDCLASS wc;
	HWND hwnd;
	MSG msg;
	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 = hInstance;
	wc.lpfnWndProc = WndProc;
	wc.lpszClassName = "Class";
	wc.lpszMenuName = NULL;
	wc.style = NULL;
	RegisterClass(&wc);
	hwnd = CreateWindow("Class","GalagaMe",WS_OVERLAPPEDWINDOW,0,0,640,480,NULL,NULL,hInstance,NULL);
	hdc = GetDC(hwnd);
	ShowWindow(hwnd,iCmd);
	UpdateWindow(hwnd);
	while(!Game.Gameover){
		if(PeekMessage(&msg,hwnd,0,0,PM_REMOVE)){
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
		paddle.movePaddle();
		paddle.drawPaddle((HBRUSH)GetStockObject(BLACK_BRUSH));
		ball.moveBall();
		ball.drawBall((HBRUSH)GetStockObject(BLACK_BRUSH));
	}
	return 0;
}