StateParser.cpp

#include "StateParser.h"
#include "TextureManager.h"
#include "Game.h"
#include "GameObjectFactory.h"

bool StateParser::parseState(const char *stateFile, std::string stateID,
	std::vector<GameObject *> *pObjects, std::vector<std::string> *pTextureIDs)
{
	TiXmlDocument xmlDoc;

	if (!xmlDoc.LoadFile(stateFile))
	{
		std::cerr << xmlDoc.ErrorDesc() << std::endl;
		return false;
	}

	TiXmlElement *pRoot = xmlDoc.RootElement();

	TiXmlElement *pStateRoot = nullptr;
	for (TiXmlElement *e = pRoot->FirstChildElement(); e != nullptr; e = e->NextSiblingElement())
		if (e->Value() == stateID)
			pStateRoot = e;

	TiXmlElement *pTextureRoot = nullptr;
	for (TiXmlElement *e = pStateRoot->FirstChildElement(); e != nullptr; e = e->NextSiblingElement())
		if (e->Value() == std::string("TEXTURES"))
			pTextureRoot = e;
	parseTextures(pTextureRoot, pTextureIDs);

	TiXmlElement *pObjectRoot = nullptr;
	for (TiXmlElement *e = pStateRoot->FirstChildElement(); e != nullptr; e = e->NextSiblingElement())
		if (e->Value() == std::string("OBJECTS"))
			pObjectRoot = e;
	parseObjects(pObjectRoot, pObjects);

	return true;
}

void StateParser::parseTextures(TiXmlElement *pStateRoot, std::vector<std::string> *pTextureIDs)
{
	for (TiXmlElement *e = pStateRoot->FirstChildElement(); e != nullptr; e = e->NextSiblingElement())
	{
		std::string filenameAttribute = e->Attribute("filename");
		std::string idAttribute = e->Attribute("ID");
		pTextureIDs->push_back(idAttribute);

		TheTextureManager::Instance()->load(filenameAttribute, idAttribute, TheGame::Instance()->getRenderer());
	}
}

void StateParser::parseObjects(TiXmlElement *pStateRoot, std::vector<GameObject *> *pObjects)
{
	for (TiXmlElement *e = pStateRoot->FirstChildElement(); e != nullptr; e = e->NextSiblingElement())
	{
		int x, y, width, height, numFrames, callbackID, animSpeed;
		std::string textureID;

		e->Attribute("x", &x);
		e->Attribute("y", &y);
		e->Attribute("width", &width);
		e->Attribute("height", &height);
		e->Attribute("numFrames", &numFrames);
		e->Attribute("callbackID", &callbackID);
		e->Attribute("animSpeed", &animSpeed);

		textureID = e->Attribute("textureID");

		GameObject *pGameObject = TheGameObjectFactory::Instance()->create(e->Attribute("type"));
		pGameObject->load(std::unique_ptr<LoaderParams>(new LoaderParams(x, y, width, height, textureID, numFrames, callbackID,
			animSpeed)));
		pObjects->push_back(pGameObject);
	}
}