ball.c

/* Bricktick brick breaker
 * This software is public domain.
 * See the file UNLICENSE.TXT for more information.
 * Created in 2014 by Subsentient
 */

#include <curses.h>
#include <stdlib.h>
#include "bricktick.h"

void BounceBallX(struct BALL *const Ball, DirectionX Direction)
{
	Ball->DirX = Direction;
}

void BounceBallY(struct BALL *const Ball, DirectionY Direction)
{
	/*Don't let us keep bouncing in a loop forever up and down.*/
	if (Direction == DOWN && Ball->DirX == X_NEUTRAL)
	{
		Ball->DirX = rand() & 1;
	}
	
	Ball->DirY = Direction;
}
	
void ResetBall(struct BALL *Ball)
{
	Ball->X = BRICKTICK_MAX_X / 2;
	Ball->Y = BRICKTICK_MAX_Y - 4; /*A little bit above the ball.*/
	Ball->DirX = X_NEUTRAL;
	Ball->DirY = DOWN;
}

Bool CheckBallHitPaddle(struct BALL *Ball, struct PADDLE *Paddle)
{
	if (Ball->X >= Paddle->X && Ball->X <= (Paddle->X + Paddle->Length)) return true;
	return false;
}


void DrawBall(struct BALL *Ball)
{
	move(Ball->Y, Ball->X);
	attron(A_BOLD);
	if (UseColor) addch('*' | COLOR_PAIR(2));
	else addch('*');
	attroff(A_BOLD);
	refresh();
}

void DeleteBall(struct BALL *Ball)
{
	move(Ball->Y, Ball->X);
	attron(A_NORMAL);
	addch(' ');
	attroff(A_NORMAL);
	refresh();
}

void MoveBall(struct BALL *Ball)
{
	DeleteBall(Ball);
	
	/*X coord movement.*/
	switch (Ball->DirX)
	{
		case RIGHT:
			if (Ball->X + 1 <= BRICKTICK_MAX_X - 1)
			{
				++Ball->X;
			}
			else
			{
				Ball->X = BRICKTICK_MAX_X - 1;
			}
			break;
		case LEFT:
			if (Ball->X - 1 >= 0)
			{
				--Ball->X;
			}
			else
			{
				Ball->X = 0;
			}
			break;
		default:
			break;
	}
		
	/*Y coord movement.*/
	switch (Ball->DirY)
	{
		case DOWN:
			if (Ball->Y + 1 < BRICKTICK_MAX_Y - 1)
			{
				++Ball->Y;
			}
			else
			{
				Ball->Y = BRICKTICK_MAX_Y - 2;
			}	
			break;
		case UP:
			if (Ball->Y - 1> 0)
			{
				--Ball->Y;
			}
			else
			{
				Ball->Y = 1;
			}
			break;
		default:
			break;
	}
	
	DrawBall(Ball);
	
}