#include "const.h"
#include "map.h"

// Constructor
Map::Map(SDL_Renderer *renderer, std::string file, Asset *asset)
{
	this->asset = asset;
	this->renderer = renderer;

	texture_tile = new LTexture();
	texture_actor = new LTexture();
	texture_bg = new LTexture();

	loadTextureFromFile(texture_tile, asset->get("tiles_volcano.png"), renderer);
	loadTextureFromFile(texture_actor, asset->get("actors.png"), renderer);
	loadTextureFromFile(texture_bg, asset->get("bg_surface.png"), renderer);

	sprite_tile = new AnimatedSprite(texture_tile, renderer);
	sprite_actor = new AnimatedSprite(texture_actor, renderer);

	const SDL_Rect rect = {0, 0, GAMECANVAS_WIDTH, GAMECANVAS_HEIGHT};
	background = new Sprite(rect, texture_bg, renderer);

	music = JA_LoadMusic(asset->get("music_surface.ogg").c_str());

	src_rect = {0, 0, 0, 0};
	dst_rect = {0, 0, 0, 0};
	w = 0;
	h = 0;
	room = 0;

	loadFromFile(file);
}

// Destructor
Map::~Map()
{
	texture_tile->unload();
	delete texture_tile;
	texture_tile = nullptr;

	texture_actor->unload();
	delete texture_actor;
	texture_actor = nullptr;

	texture_bg->unload();
	delete texture_bg;
	texture_bg = nullptr;

	delete sprite_tile;
	sprite_tile = nullptr;
	delete sprite_actor;

	sprite_actor = nullptr;
	delete background;
	background = nullptr;

	delete[] tile;
	delete[] actor;

	JA_DeleteMusic(music);
}

// Carga el mapa a partir de un fichero
void Map::loadFromFile(std::string path)
{
	std::string filename = path.substr(path.find_last_of("\\/") + 1);
	SDL_RWops *file = SDL_RWFromFile(path.c_str(), "r+b");
	Uint8 *w;
	Uint8 *h;

	if (file == NULL)
	{
		printf("Warning: Unable to open %s file\n", filename.c_str());
	}
	else
	{
		printf("Reading file %s\n", filename.c_str());

		SDL_RWread(file, &w, sizeof(Uint8), 1);
		SDL_RWread(file, &h, sizeof(Uint8), 1);

		long size = (*w) * (*h);
		tile = new Uint8[size];
		actor = new Uint8[size];

		for (long i = 0; i < size; i++)
			SDL_RWread(file, &tile[i], sizeof(Uint8), 1);

		for (long i = 0; i < size; i++)
			SDL_RWread(file, &actor[i], sizeof(Uint8), 1);

		SDL_RWclose(file);
	}
}

// Actualiza todas las variables
void Map::update()
{
	background->setPosX(0);
	background->setPosY(0);
}

// Dibuja el objeto
void Map::render()
{
	background->render();
}

// Obtiene el valor del tile de la habitación actual
Uint8 Map::getTile(int x, int y)
{
	const long room_x = (room % 12) * ROOM_WIDTH_IN_TILES;
	const long room_y = (room / 12) * ROOM_HEIGHT_IN_TILES;
	return tile[(room_x + x) + (room_y + y) * w];
}

// Obtiene el tipo de tile segun su ubicación en la textura
Uint8 Map::readMapTile(Uint8 x, Uint8 y)
{
	const Uint8 tile = getTile(x, y);

	if (tile >= 0 && tile <= 63)
	{
		return TILE_BACKGROUND;
	}
	else if (tile >= 64 && tile <= 143)
	{
		return TILE_PLATFORM;
	}
	else if (tile >= 144 && tile <= 175)
	{
		return TILE_TRAVESABLE_PLATFORM;
	}
	else if (tile >= 176 && tile <= 207)
	{
		return TILE_KILLING_PLATFORM;
	}
	else if (tile >= 208 && tile <= 255)
	{
		return TILE_ACTOR;
	}
	else
	{
		return 0;
	}
}

// Obtiene el valor del actor en esa ubicación
Uint8 Map::getActor(Uint8 x, Uint8 y)
{
	long room_x = (room % 12) * ROOM_WIDTH_IN_TILES;
	long room_y = (room / 12) * ROOM_HEIGHT_IN_TILES;
	return actor[(room_x + x) + (room_y + y) * w];
}

// Establece el valor del actor en esa ubicación
void Map::setActor(Uint8 x, Uint8 y, Uint8 valor)
{
	long room_x = (room % 12) * ROOM_WIDTH_IN_TILES;
	long room_y = (room / 12) * ROOM_HEIGHT_IN_TILES;
	actor[(room_x + x) + (room_y + y) * w] = valor;
}

// Carga las texturas del mapa en función de la zona
void Map::setMapGFX(Uint8 zone)
{
	switch (zone)
	{
	case ZONE_SURFACE:
		loadTextureFromFile(texture_tile, asset->get("tiles_surface.png").c_str(), renderer);
		loadTextureFromFile(texture_bg, asset->get("bg_surface.png").c_str(), renderer);
		break;

	case ZONE_VOLCANO:
		loadTextureFromFile(texture_tile, asset->get("tiles_volcano.png").c_str(), renderer);
		loadTextureFromFile(texture_bg, asset->get("bg_surface.png").c_str(), renderer);
		break;
	}
}

// Carga las musica del juego en función de la zona
void Map::setMapMusic(Uint8 zone)
{
	switch (zone)
	{
	case ZONE_SURFACE:
		music = JA_LoadMusic(asset->get("music_surface.ogg").c_str());
		break;

	case ZONE_VOLCANO:
		music = JA_LoadMusic(asset->get("music_volcano.ogg").c_str());
		break;
	}
}

// Comprueba si se ha cambiado de zona
bool Map::checkZoneChange(int room)
{
	Uint8 _zone = 0;

	if ((room >= 0) && (room <= 23))
		_zone = ZONE_SURFACE;
	else if ((room >= 24) && (room <= 255))
		_zone = ZONE_VOLCANO;

	if (_zone == zone)
		return false;
	else
		return true;
}

// Cambia la zona del mapa
void Map::setZone(int room)
{
	if ((room >= 0) && (room <= 23))
		zone = ZONE_SURFACE;
	else if ((room >= 24) && (room <= 255))
		zone = ZONE_VOLCANO;

	setMapGFX(zone);
	setMapMusic(zone);
	JA_PlayMusic(music, -1);
}