Игра пинг-понг Помогите помогите помогите ?

#include <graphics.h>


#define RACKETLEN 50
#define RACKETWIDTH 5

static int racket1_x = 20;
static int racket1_y = 280;
static int racket2_x = 770-RACKETWIDTH;
static int racket2_y = 280;
static int ball_x= 100, ball_y = 45;
static int ballSize = 10;
static int RacketColor = 15;
static int BallGNDColor = 0;
static int BallColor = 15;
int dirY = 0;int dirX = 0;

void drawBoard(int color)
{
	setcolor(color);
	rectangle (10,30, 780, 580);
}

void DrawLine(int color, int x0, int y0, int x1, int y1,int thickness) {

  while(thickness>=1)
  {
      int tx0,ty0,tx1,ty1;
      tx0=x0;tx1=x1;ty0=y0;ty1=y1;
      int dx = abs(x1-x0), sx = x0<x1 ? 1 : -1;
      int dy = abs(y1-y0), sy = y0<y1 ? 1 : -1;
      int err = (dx>dy ? dx : -dy)/2, e2;

      for(;;){
        putpixel(x0, y0, color);
        //put_pixel(g,x0,y0);
        if (x0==x1 && y0==y1) break;
        e2 = err;
        if (e2 >-dx) { err -= dy; x0 += sx; }
        if (e2 < dy) { err += dx; y0 += sy; }
      }
      x0=tx0+1;
      y0=ty0;
      x1=tx1+1;
      y1=ty1;
      thickness--;
  }
}

void drawRackets(int color)
{
	DrawLine(color,racket1_x,racket1_y,racket1_x,racket1_y+RACKETLEN,RACKETWIDTH);
	DrawLine(color,racket2_x,racket2_y,racket2_x,racket2_y+RACKETLEN,RACKETWIDTH);
}

void drawBall(int x, int y, int ballSize, int color)
{
    DrawLine(color,x,y,x,y+ballSize,ballSize);

}

void drawTop()
{
    setcolor(4);
    outtextxy(30, 5, "Pong Game !");
    outtextxy(380, 5, "0 - 0");
    outtextxy(680, 5, "SCORE: ");
}

void initGame()
{
    initwindow(800, 600);
	cleardevice();
	drawBoard(1);
	drawRackets(RacketColor);
	drawTop();
}

void move_racket(int *x, int *y, int dir)
{
    drawRackets(0);
	if (dir == 1)  	/* LEFT */
		*y = *y - 5;
	else		/* RIGHT */
		*y = *y + 5;
	drawRackets(RacketColor);
}

void move_ball()
{
    if(ball_y>=580-ballSize){
        dirY = 0;}
    if(ball_y<=31){
        dirY = 1;}

  if(ball_x>=780-ballSize)
    {
    dirX=0;}
  if (ball_x<=31){
    dirX =1;}

	drawBall(ball_x,ball_y,ballSize,BallGNDColor);

    if(dirY == 1){
        ball_y++;}
    else{
        ball_y--;}

    if(dirX == 1){
        ball_x++;}
    else{
        ball_x--;}


	drawBall(ball_x,ball_y,ballSize,BallColor);
}



void playGame()
{
    char c;
    initGame();
    while(1) {
        if (kbhit()) {
            c = getch();
	    if (c == 'w')    /* 'a' character */
	    	move_racket(&racket1_x,&racket1_y,1);
        if (c == 's')
            move_racket(&racket1_x,&racket1_y,0);
	    if (c == 119)   /* 'w' character */
	    	move_racket(&racket2_x,&racket2_y,0);
	    // setpos(15,15);
	    // putint(c);
        }
       delay(1);
       if (ball_x < 800 && ball_y < 600) {
		move_ball();
       }
        // char* line;
        //line = readline();
        //println("");
        //println("You entered:");
        //println(line);
        //free(line);
    }
}


main(int argc, char *argv[])
{
    playGame();
    //while(1);
	//while(!kbhit()) delay(1);				// pause screen
}