247 lines
7.6 KiB
C++
247 lines
7.6 KiB
C++
#include <fstream>
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#include "game.h"
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class ConfigBuilder{
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public:
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ConfigData collectedData;
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void parseFile(const string& fname);
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void readConfig();
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void dumpInternalValues();
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private:
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map<string, string> internalValues;
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string& getString(const configKey& key);
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char getChar(const configKey& key);
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int getInt(const configKey& key);
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nsGraphics::RGBAcolor getColor(const configKey& key);
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void getList(const configKey& key, vector<string>&);
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};
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void ConfigBuilder::dumpInternalValues(){
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for(const auto& ite : internalValues){
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cerr << ite.first << " -> " << ite.second << endl;
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}
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}
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void trimSpaces(string& str){
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str.erase(0, str.find_first_not_of(' '));
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}
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/*
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* WARNING : This implementation of YAML is not meant to detect and report errors in a non YAML-compliant file
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*/
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void ConfigBuilder::parseFile(const string& fname) {
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ifstream file(fname);
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if(!file.is_open())throw runtime_error("Error while opening config.yml. Check file location ?");
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vector<string> keyParts;
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unsigned listIndex;
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while (!file.eof()) {
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string line;
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getline(file, line);
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auto match = line.find('#');
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if (match != string::npos)line.erase(match);
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if (line.empty())continue;
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unsigned currentIndent = 0;
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while (line[currentIndent] == ' ')++currentIndent;
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if(line[currentIndent]=='-'){
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string value = line.substr(currentIndent+1);
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trimSpaces(value);
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string fullKey;
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for (unsigned i = 0; i < currentIndent; ++i) {
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fullKey.append(keyParts[i]);
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fullKey.append(".");
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}
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// lists are just treated as sections with key 0,1,2...
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fullKey.append(to_string((listIndex)));
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++listIndex;
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internalValues[fullKey] = value;
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}else{
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match = line.find(':');
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if (match == string::npos)throw runtime_error("Invalid line : " + line);
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string key = line.substr(0, match);
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string value = line.substr(match + 1);
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trimSpaces(key);
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trimSpaces(value);
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if (value.empty()) {
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keyParts.resize(currentIndent);
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keyParts.push_back(key);
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listIndex = 0;
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} else {
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string fullKey;
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for (unsigned i = 0; i < currentIndent; ++i) {
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fullKey.append(keyParts[i]);
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fullKey.append(".");
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}
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fullKey.append(key);
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internalValues[fullKey] = value;
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}
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}
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}
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file.close();
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}
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void ConfigBuilder::readConfig() {
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vector<string> tmp;
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getList("grid", tmp);
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// we are essentially going to translate a line-oriented config to a column-oriented grid
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unsigned maxSize = 0;
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for(string& s : tmp){
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if(s.size()>maxSize)maxSize = s.size();
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}
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collectedData.grid.resize(maxSize);
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for(string& s : tmp){
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unsigned i=0;
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for(;i<s.size();++i){
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switch(toupper(s[i])){
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case 'A':{
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collectedData.grid[i].push_back(Invader::TYPEA);
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break;
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}
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case 'B':{
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collectedData.grid[i].push_back(Invader::TYPEB);
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break;
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}
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case 'C':{
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collectedData.grid[i].push_back(Invader::TYPEC);
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break;
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}
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case ' ':{
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collectedData.grid[i].push_back(Invader::NONE);
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break;
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}
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default:{
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throw runtime_error("Invalid invader ID in grid definition : "+ to_string(s[i]));
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}
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}
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}
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while(i<maxSize){
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collectedData.grid[i].push_back(Invader::NONE);
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++i;
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}
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}
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// players
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collectedData.playersWidth = getInt("players.width");
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collectedData.startXPosition = getInt("players.startXPosition");
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collectedData.playersSpeed = getInt("players.speed");
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collectedData.playersFireCooldown = getInt("players.fireCooldown");
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// the scalability behind the vector of players is only an illusion, because we force player count to be 1 or 2
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// It was done so the 2+ players implementation could be easier in the future, if wanted
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collectedData.playerDefs.resize(2);
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collectedData.playerDefs[0].color = getColor("players.user1.color");
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collectedData.playerDefs[0].keys.left = getChar("players.user1.keys.left");
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collectedData.playerDefs[0].keys.right = getChar("players.user1.keys.right");
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collectedData.playerDefs[0].keys.shoot = getChar("players.user1.keys.shoot");
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collectedData.playerDefs[1].color = getColor("players.user2.color");
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collectedData.playerDefs[1].keys.left = getChar("players.user2.keys.left");
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collectedData.playerDefs[1].keys.right = getChar("players.user2.keys.right");
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collectedData.playerDefs[1].keys.shoot = getChar("players.user2.keys.shoot");
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// invaders
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collectedData.invadersSize = getInt("invaders.size");
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collectedData.invadersSpeed = getInt("invaders.speed");
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collectedData.invadersDistance = getInt("invaders.distance");
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collectedData.invadersFireCooldown = getInt("invaders.fireCooldown");
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// projectiles
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collectedData.missilesWidth = getInt("projectiles.missiles.width");
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collectedData.missilesLength = collectedData.missilesWidth*PROJ_LENGTH_FACTOR;
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collectedData.missilesSpeed = getInt("projectiles.missiles.speed");
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collectedData.missilesColor = getColor("projectiles.missiles.color");
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collectedData.torpedosWidth = getInt("projectiles.torpedos.width");
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collectedData.torpedosLength = collectedData.torpedosWidth*PROJ_LENGTH_FACTOR;
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collectedData.torpedosSpeed = getInt("projectiles.missiles.speed");
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collectedData.torpedosColor = getColor("projectiles.torpedos.color");
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}
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int ConfigBuilder::getInt(const configKey& key) {
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return stoi(getString(key));
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}
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char ConfigBuilder::getChar(const configKey& key) {
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return getString(key)[0];
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}
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string& ConfigBuilder::getString(const configKey& key) {
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if(internalValues.contains(key)){
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return internalValues.at(key);
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}else{
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throw runtime_error("Non-existent key requested : "+key);
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}
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}
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void ConfigBuilder::getList(const configKey& key, vector<string>& toPopulate) {
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size_t i=0;
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string fullKey = key+".0";
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if(!internalValues.contains(fullKey))throw runtime_error("Non-existent list key requested : "+key);
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do{
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toPopulate.push_back(internalValues.at(fullKey));
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++i;
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fullKey = key+"."+to_string(i);
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}while(internalValues.contains(key+"."+to_string(i)));
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}
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nsGraphics::RGBAcolor ConfigBuilder::getColor(const configKey& key) {
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// switch do not work with strings, and I don't want to implement a constexpr hash function
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string colorStr = getString(key);
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if (colorStr == "black")return nsGraphics::KBlack;
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else if (colorStr == "white")return nsGraphics::KWhite;
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else if (colorStr == "red")return nsGraphics::KRed;
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else if (colorStr == "lime")return nsGraphics::KLime;
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else if (colorStr == "blue")return nsGraphics::KBlue;
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else if (colorStr == "yellow")return nsGraphics::KYellow;
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else if (colorStr == "cyan")return nsGraphics::KCyan;
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else if (colorStr == "magenta")return nsGraphics::KMagenta;
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else if (colorStr == "silver")return nsGraphics::KSilver;
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else if (colorStr == "gray")return nsGraphics::KGray;
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else if (colorStr == "maroon")return nsGraphics::KMaroon;
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else if (colorStr == "olive")return nsGraphics::KOlive;
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else if (colorStr == "green")return nsGraphics::KGreen;
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else if (colorStr == "purple")return nsGraphics::KPurple;
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else if (colorStr == "teal")return nsGraphics::KTeal;
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else if (colorStr == "navy")return nsGraphics::KNavy;
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else throw runtime_error("Invalid color string : "+colorStr);
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}
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/**
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*
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* @return false if there was an error
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*/
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bool Game::reloadConfig() {
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map<string, string> strValues;
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ConfigBuilder builder;
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bool parsed = false;
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try{
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builder.parseFile("config.yml");
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parsed = true;
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builder.readConfig();
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}catch(runtime_error& e){
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if(parsed)cerr << "An error occured while reading the configuration :" << endl;
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else cerr << "An error occured while parsing the configuration :" << endl;
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cerr << e.what() << endl;
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if(parsed){
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cerr << "Parsed keys :" << endl;
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builder.dumpInternalValues();
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}
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cerr << "(The old configuration was kept in memory)" << endl;
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return false;
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}
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confData = builder.collectedData;
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return true;
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}
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