typedef struct
{
	int points;
	int x, y, mx, my;
	SDL_Rect rect;
	SDL_Surface *image;
	char name[50];
	char who_live[50];
}object;

object adam, david, ball;

extern int MOVE_Y;
extern SDL_Surface *screen;
int M_Y = 7;
int difficult = 0; 
float visible = 0;

void ai_check(object * user)
{

		if((ball.rect.y > (user->rect.y + user->rect.h/2)) 
			&& (user->my != M_Y))
			{
				if((user->rect.y + user->rect.h + M_Y) < (screen->h - 5))
					user->my = M_Y;
				
				else 
					user->my = -M_Y;
			}
			
		if((ball.rect.y < (user->rect.y + user->rect.h/2)) 
			&& (user->my != -M_Y))
				user->my = -M_Y;
}

void ai_move(object * user)
{
	
	switch(difficult)
	{
		case 0: visible = (SCR_X/3.1);
			break;
		case 1: visible = (SCR_X/3);
			break;
		case 2: visible = (SCR_X/2.9);
			break;
		default: break;
	}
	
	if(user->rect.x < SCR_X/2) 
	{
		if((ball.rect.x < visible) && (ball.mx < 0))
			ai_check(user);
			
		else user->my = 0;
	}
	
	
	
	if(user->rect.x > SCR_X/2)
	{
		if(ball.rect.x > (SCR_X - visible) && (ball.mx > 0))
			ai_check(user);
		
		else user->my = 0;
	}
	
}