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#include "world.h"
#include <libxml/parser.h>
#include <stdexcept>
#include <cstring>
#include "consts.h"
inline xmlChar* getProp(xmlNodePtr node, const char* attr)
{
xmlChar* key = xmlGetProp(node, reinterpret_cast<const xmlChar*>(attr));
if (key == nullptr)
{
throw std::invalid_argument("Error parsing world file");
}
return key;
}
World::World(std::string filename)
{
xmlDocPtr doc = xmlParseFile(filename.c_str());
if (doc == nullptr)
{
throw std::invalid_argument("Cannot find world file");
}
xmlNodePtr top = xmlDocGetRootElement(doc);
if (top == nullptr)
{
throw std::invalid_argument("Error parsing world file");
}
if (xmlStrcmp(top->name, reinterpret_cast<const xmlChar*>("world")))
{
throw std::invalid_argument("Error parsing world file");
}
xmlChar* key = nullptr;
key = getProp(top, "startx");
startX_ = atoi(reinterpret_cast<char*>(key));
xmlFree(key);
key = getProp(top, "starty");
startY_ = atoi(reinterpret_cast<char*>(key));
xmlFree(key);
key = getProp(top, "startmap");
startMap_ = atoi(reinterpret_cast<char*>(key));
xmlFree(key);
for (xmlNodePtr node = top->xmlChildrenNode;
node != nullptr;
node = node->next)
{
if (!xmlStrcmp(node->name, reinterpret_cast<const xmlChar*>("map")))
{
key = getProp(node, "id");
size_t mapId = atoi(reinterpret_cast<char*>(key));
xmlFree(key);
key = getProp(node, "title");
std::string mapTitle(reinterpret_cast<char*>(key));
xmlFree(key);
std::vector<int> mapTiles;
Map::Adjacent leftAdj;
Map::Adjacent rightAdj;
Map::Adjacent upAdj;
Map::Adjacent downAdj;
for (xmlNodePtr mapNode = node->xmlChildrenNode;
mapNode != nullptr;
mapNode = mapNode->next)
{
if (!xmlStrcmp(
mapNode->name,
reinterpret_cast<const xmlChar*>("environment")))
{
key = xmlNodeGetContent(mapNode);
mapTiles.clear();
mapTiles.push_back(atoi(strtok(reinterpret_cast<char*>(key), ",\n")));
for (size_t i = 1; i < (MAP_WIDTH * MAP_HEIGHT); i++)
{
mapTiles.push_back(atoi(strtok(nullptr, ",\n")));
}
xmlFree(key);
} else if (!xmlStrcmp(
mapNode->name,
reinterpret_cast<const xmlChar*>("adjacent")))
{
key = getProp(mapNode, "type");
std::string adjTypeStr(reinterpret_cast<char*>(key));
xmlFree(key);
Map::Adjacent::Type adjType;
if (adjTypeStr == "wall")
{
adjType = Map::Adjacent::Type::wall;
} else if (adjTypeStr == "wrap")
{
adjType = Map::Adjacent::Type::wrap;
} else if (adjTypeStr == "warp")
{
adjType = Map::Adjacent::Type::warp;
} else if (adjTypeStr == "reverseWarp")
{
adjType = Map::Adjacent::Type::reverse;
} else {
throw std::logic_error("Invalid adjacency type");
}
key = getProp(mapNode, "map");
int adjMapId = atoi(reinterpret_cast<char*>(key));
xmlFree(key);
key = getProp(mapNode, "dir");
std::string adjDir(reinterpret_cast<char*>(key));
xmlFree(key);
if (adjDir == "left")
{
leftAdj = {adjType, adjMapId};
} else if (adjDir == "right")
{
rightAdj = {adjType, adjMapId};
} else if (adjDir == "up")
{
upAdj = {adjType, adjMapId};
} else if (adjDir == "down")
{
downAdj = {adjType, adjMapId};
} else {
throw std::logic_error("Invalid adjacency direction");
}
}
}
maps_.emplace(
std::piecewise_construct,
std::forward_as_tuple(mapId),
std::forward_as_tuple(
mapId,
std::move(mapTiles),
std::move(mapTitle),
leftAdj,
rightAdj,
upAdj,
downAdj));
}
}
xmlFreeDoc(doc);
}
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