level.h

#ifndef LEVEL_H
#define LEVEL_H


#include <string>
#include <vector>
#include <map>
#include <SFML/Graphics.hpp>
#include <iostream>
#include "TinyXML/tinyxml.h"

struct Object
{
	int GetPropertyInt(std::string name);
	float GetPropertyFloat(std::string name);
	std::string GetPropertyString(std::string name);

	std::string name;
	std::string type;
	sf::Rect<float> rect;
	std::map<std::string, std::string> properties;

	sf::Sprite sprite;
};

struct Layer
{
	int opacity;
	std::vector<sf::Sprite> tiles;
};

class Level
{
public:
	bool LoadFromFile(std::string filename);
	Object GetObject(std::string name);
	std::vector<Object> GetObjects(std::string name);
	std::vector<Object> GetAllObjects();
	void Draw(sf::RenderWindow &window);
	sf::Vector2i GetTileSize();

private:
	int width, height, tileWidth, tileHeight;
	int firstTileID;
	sf::Rect<float> drawingBounds;
	sf::Texture tilesetImage;
	std::vector<Object> objects;
	std::vector<Layer> layers;
};

///////////////////////////////////////


int Object::GetPropertyInt(std::string name)
{
	return atoi(properties[name].c_str());
}

float Object::GetPropertyFloat(std::string name)
{
	return strtod(properties[name].c_str(), NULL);
}

std::string Object::GetPropertyString(std::string name)
{
	return properties[name];
}

bool Level::LoadFromFile(std::string filename)
{
	TiXmlDocument levelFile(filename.c_str());

	// Çàãðóæàåì XML-êàðòó
	if (!levelFile.LoadFile())
	{
		std::cout << "Loading level \"" << filename << "\" failed." << std::endl;
		return false;
	}

	// Ðàáîòàåì ñ êîíòåéíåðîì map
	TiXmlElement *map;
	map = levelFile.FirstChildElement("map");

	// Ïðèìåð êàðòû: <map version="1.0" orientation="orthogonal"
	// width="10" height="10" tilewidth="34" tileheight="34">
	width = atoi(map->Attribute("width"));
	height = atoi(map->Attribute("height"));
	tileWidth = atoi(map->Attribute("tilewidth"));
	tileHeight = atoi(map->Attribute("tileheight"));

	// Áåðåì îïèñàíèå òàéëñåòà è èäåíòèôèêàòîð ïåðâîãî òàéëà
	TiXmlElement *tilesetElement;
	tilesetElement = map->FirstChildElement("tileset");
	firstTileID = atoi(tilesetElement->Attribute("firstgid"));

	// source - ïóòü äî êàðòèíêè â êîíòåéíåðå image
	TiXmlElement *image;
	image = tilesetElement->FirstChildElement("image");
	std::string imagepath = image->Attribute("source");

	// Ïûòàåìñÿ çàãðóçèòü òàéëñåò
	sf::Image img;

	if (!img.loadFromFile(imagepath))
	{
		std::cout << "Failed to load tile sheet." << std::endl;
		return false;
	}


	img.createMaskFromColor(sf::Color(255, 255, 255));
	tilesetImage.loadFromImage(img);
	tilesetImage.setSmooth(false);

	// Ïîëó÷àåì êîëè÷åñòâî ñòîëáöîâ è ñòðîê òàéëñåòà
	int columns = tilesetImage.getSize().x / tileWidth;
	int rows = tilesetImage.getSize().y / tileHeight;

	// Âåêòîð èç ïðÿìîóãîëüíèêîâ èçîáðàæåíèé (TextureRect)
	std::vector<sf::Rect<int>> subRects;

	for (int y = 0; y < rows; y++)
		for (int x = 0; x < columns; x++)
		{
			sf::Rect<int> rect;

			rect.top = y * tileHeight;
			rect.height = tileHeight;
			rect.left = x * tileWidth;
			rect.width = tileWidth;

			subRects.push_back(rect);
		}

	// Ðàáîòà ñî ñëîÿìè
	TiXmlElement *layerElement;
	layerElement = map->FirstChildElement("layer");
	while (layerElement)
	{
		Layer layer;

		// Åñëè ïðèñóòñòâóåò opacity, òî çàäàåì ïðîçðà÷íîñòü ñëîÿ, èíà÷å îí ïîëíîñòüþ íåïðîçðà÷åí
		if (layerElement->Attribute("opacity") != NULL)
		{
			float opacity = strtod(layerElement->Attribute("opacity"), NULL);
			layer.opacity = 255 * opacity;
		}
		else
		{
			layer.opacity = 255;
		}

		// Êîíòåéíåð <data>
		TiXmlElement *layerDataElement;
		layerDataElement = layerElement->FirstChildElement("data");

		if (layerDataElement == NULL)
		{
			std::cout << "Bad map. No layer information found." << std::endl;
		}

		// Êîíòåéíåð <tile> - îïèñàíèå òàéëîâ êàæäîãî ñëîÿ
		TiXmlElement *tileElement;
		tileElement = layerDataElement->FirstChildElement("tile");

		if (tileElement == NULL)
		{
			std::cout << "Bad map. No tile information found." << std::endl;
			return false;
		}

		int x = 0;
		int y = 0;

		while (tileElement)
		{
			int tileGID = atoi(tileElement->Attribute("gid"));
			int subRectToUse = tileGID - firstTileID;

			// Óñòàíàâëèâàåì TextureRect êàæäîãî òàéëà
			if (subRectToUse >= 0)
			{
				sf::Sprite sprite;
				sprite.setTexture(tilesetImage);
				sprite.setTextureRect(subRects[subRectToUse]);
				sprite.setPosition(x * tileWidth, y * tileHeight);
				sprite.setColor(sf::Color(255, 255, 255, layer.opacity));

				layer.tiles.push_back(sprite);
			}

			tileElement = tileElement->NextSiblingElement("tile");

			x++;
			if (x >= width)
			{
				x = 0;
				y++;
				if (y >= height)
					y = 0;
			}
		}

		layers.push_back(layer);

		layerElement = layerElement->NextSiblingElement("layer");
	}

	// Ðàáîòà ñ îáúåêòàìè
	TiXmlElement *objectGroupElement;

	// Åñëè åñòü ñëîè îáúåêòîâ
	if (map->FirstChildElement("objectgroup") != NULL)
	{
		objectGroupElement = map->FirstChildElement("objectgroup");
		while (objectGroupElement)
		{
			// Êîíòåéíåð <object>
			TiXmlElement *objectElement;
			objectElement = objectGroupElement->FirstChildElement("object");

			while (objectElement)
			{
				// Ïîëó÷àåì âñå äàííûå - òèï, èìÿ, ïîçèöèÿ, etc
				std::string objectType;
				if (objectElement->Attribute("type") != NULL)
				{
					objectType = objectElement->Attribute("type");
				}
				std::string objectName;
				if (objectElement->Attribute("name") != NULL)
				{
					objectName = objectElement->Attribute("name");
				}
				int x = atoi(objectElement->Attribute("x"));
				int y = atoi(objectElement->Attribute("y"));

				int width, height;

				sf::Sprite sprite;
				sprite.setTexture(tilesetImage);
				sprite.setTextureRect(sf::Rect<int>(0, 0, 0, 0));
				sprite.setPosition(x, y);

				if (objectElement->Attribute("width") != NULL)
				{
					width = atoi(objectElement->Attribute("width"));
					height = atoi(objectElement->Attribute("height"));
				}
				else
				{
					width = subRects[atoi(objectElement->Attribute("gid")) - firstTileID].width;
					height = subRects[atoi(objectElement->Attribute("gid")) - firstTileID].height;
					sprite.setTextureRect(subRects[atoi(objectElement->Attribute("gid")) - firstTileID]);
				}

				// Ýêçåìïëÿð îáúåêòà
				Object object;
				object.name = objectName;
				object.type = objectType;
				object.sprite = sprite;

				sf::Rect <float> objectRect;
				objectRect.top = y;
				objectRect.left = x;
				objectRect.height = height;
				objectRect.width = width;
				object.rect = objectRect;

				// "Ïåðåìåííûå" îáúåêòà
				TiXmlElement *properties;
				properties = objectElement->FirstChildElement("properties");
				if (properties != NULL)
				{
					TiXmlElement *prop;
					prop = properties->FirstChildElement("property");
					if (prop != NULL)
					{
						while (prop)
						{
							std::string propertyName = prop->Attribute("name");
							std::string propertyValue = prop->Attribute("value");

							object.properties[propertyName] = propertyValue;

							prop = prop->NextSiblingElement("property");
						}
					}
				}


				objects.push_back(object);

				objectElement = objectElement->NextSiblingElement("object");
			}
			objectGroupElement = objectGroupElement->NextSiblingElement("objectgroup");
		}
	}
	else
	{
		std::cout << "No object layers found..." << std::endl;
	}

	return true;
}

Object Level::GetObject(std::string name)
{
	// Òîëüêî ïåðâûé îáúåêò ñ çàäàííûì èìåíåì
	for (int i = 0; i < objects.size(); i++)
		if (objects[i].name == name)
			return objects[i];
}

std::vector<Object> Level::GetObjects(std::string name)
{
	// Âñå îáúåêòû ñ çàäàííûì èìåíåì
	std::vector<Object> vec;
	for (int i = 0; i < objects.size(); i++)
		if (objects[i].name == name)
			vec.push_back(objects[i]);

	return vec;
}


std::vector<Object> Level::GetAllObjects()
{
	return objects;
};


sf::Vector2i Level::GetTileSize()
{
	return sf::Vector2i(tileWidth, tileHeight);
}

void Level::Draw(sf::RenderWindow &window)
{
	// Ðèñóåì âñå òàéëû (îáúåêòû ÍÅ ðèñóåì!)
	for (int layer = 0; layer < layers.size(); layer++)
		for (int tile = 0; tile < layers[layer].tiles.size(); tile++)
			window.draw(layers[layer].tiles[tile]);
}

#endif