bg.h

/*
 * Copyright (C) 2014 Nebuleon Fumika <nebuleon@gcw-zero.com>
 * 2015 Cong Xu <congusbongus@gmail.com>
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
#pragma once

#include <stdbool.h>
#include <stdint.h>

#include "draw.h"


typedef struct
{
	int X;
	int Y;
	int Index;
} ParticlePos;
#define MAX_PARTICLES 64
typedef struct
{
	Tex T;
	ParticlePos Positions[MAX_PARTICLES];
} BGParticles;

typedef struct
{
	BGParticles Icicles;
	BGParticles Flares;
	BGParticles Stars;
} Backgrounds;
extern Backgrounds BG;

void BackgroundsInit(Backgrounds *bg);

void DrawBackground(Backgrounds *bg, const float y);

bool BackgroundsLoad(Backgrounds *bg);
void BackgroundsFree(Backgrounds *bg);