426 lines
12 KiB
Dart
426 lines
12 KiB
Dart
import 'dart:io';
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import 'package:rimworld_modman/logger.dart';
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import 'package:rimworld_modman/mod.dart';
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import 'package:xml/xml.dart';
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class ModList {
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String configPath = '';
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String modsPath = '';
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// O(1) lookup
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Map<String, bool> activeMods = {};
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Map<String, Mod> mods = {};
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ModList({this.configPath = '', this.modsPath = ''});
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Stream<Mod> loadAvailable() async* {
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final logger = Logger.instance;
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final stopwatch = Stopwatch()..start();
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final directory = Directory(modsPath);
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if (!directory.existsSync()) {
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logger.error('Error: Mods root directory does not exist: $modsPath');
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return;
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}
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final List<FileSystemEntity> entities = directory.listSync();
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final List<String> modDirectories =
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entities.whereType<Directory>().map((dir) => dir.path).toList();
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logger.info(
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'Found ${modDirectories.length} mod directories (${stopwatch.elapsedMilliseconds}ms)',
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);
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for (final modDir in modDirectories) {
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try {
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final modStart = stopwatch.elapsedMilliseconds;
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// Check if this directory contains a valid mod
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final aboutFile = File('$modDir/About/About.xml');
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if (!aboutFile.existsSync()) {
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logger.warning('No About.xml found in directory: $modDir');
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continue;
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}
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final mod = Mod.fromDirectory(modDir);
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logger.info('Loaded mod from directory: ${mod.name} (ID: ${mod.id})');
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if (mods.containsKey(mod.id)) {
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logger.warning(
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'Mod $mod.id already exists in mods list, overwriting',
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);
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final existingMod = mods[mod.id]!;
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mods[mod.id] = Mod(
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name: mod.name,
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id: mod.id,
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path: mod.path,
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versions: mod.versions,
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description: mod.description,
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dependencies: mod.dependencies,
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loadAfter: mod.loadAfter,
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loadBefore: mod.loadBefore,
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incompatibilities: mod.incompatibilities,
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size: mod.size,
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enabled: existingMod.enabled,
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isBaseGame: existingMod.isBaseGame,
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isExpansion: existingMod.isExpansion,
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);
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logger.info('Updated existing mod: ${mod.name} (ID: ${mod.id})');
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} else {
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mods[mod.id] = mod;
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logger.info('Added new mod: ${mod.name} (ID: ${mod.id})');
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}
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final modTime = stopwatch.elapsedMilliseconds - modStart;
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logger.info(
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'Loaded mod from directory: ${mod.name} (ID: ${mod.id}) in $modTime ms',
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);
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} catch (e) {
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logger.error('Error loading mod from directory: $modDir');
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logger.error('Error: $e');
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}
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}
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}
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Stream<Mod> loadActive() async* {
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final logger = Logger.instance;
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final file = File(configPath);
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logger.info('Loading configuration from: $configPath');
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try {
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final xmlString = file.readAsStringSync();
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logger.info('XML content read successfully.');
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final xmlDocument = XmlDocument.parse(xmlString);
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logger.info('XML document parsed successfully.');
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final modConfigData = xmlDocument.findElements("ModsConfigData").first;
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logger.info('Found ModsConfigData element.');
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final modsElement = modConfigData.findElements("activeMods").first;
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logger.info('Found activeMods element.');
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final modElements = modsElement.findElements("li");
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logger.info('Found ${modElements.length} active mods.');
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// Get the list of known expansions
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final knownExpansionsElement =
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modConfigData.findElements("knownExpansions").firstOrNull;
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final knownExpansionIds =
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knownExpansionsElement != null
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? knownExpansionsElement
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.findElements("li")
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.map((e) => e.innerText.toLowerCase())
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.toList()
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: <String>[];
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logger.info('Found ${knownExpansionIds.length} known expansions.');
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// Clear and recreate the mods list
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for (final modElement in modElements) {
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final modId = modElement.innerText.toLowerCase();
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// Check if this is a special Ludeon mod
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final isBaseGame = modId == 'ludeon.rimworld';
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final isExpansion =
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!isBaseGame &&
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modId.startsWith('ludeon.rimworld.') &&
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knownExpansionIds.contains(modId);
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final existingMod = mods[modId];
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final mod = Mod(
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name:
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existingMod?.name ??
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(isBaseGame
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? "RimWorld"
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: isExpansion
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? "RimWorld ${_expansionNameFromId(modId)}"
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: modId),
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id: existingMod?.id ?? modId,
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path: existingMod?.path ?? '',
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versions: existingMod?.versions ?? [],
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description:
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existingMod?.description ??
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(isBaseGame
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? "RimWorld base game"
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: isExpansion
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? "RimWorld expansion"
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: ""),
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dependencies: existingMod?.dependencies ?? [],
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loadAfter:
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existingMod?.loadAfter ??
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(isExpansion ? ['ludeon.rimworld'] : []),
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loadBefore: existingMod?.loadBefore ?? [],
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incompatibilities: existingMod?.incompatibilities ?? [],
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enabled: existingMod?.enabled ?? false,
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size: existingMod?.size ?? 0,
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isBaseGame: isBaseGame,
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isExpansion: isExpansion,
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);
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if (mods.containsKey(modId)) {
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logger.warning('Mod $modId already exists in mods list, overwriting');
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}
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mods[modId] = mod;
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setEnabled(modId, mod.enabled);
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yield mod;
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}
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logger.info('Loaded ${modElements.length} mods from config file.');
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} catch (e) {
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logger.error('Error loading configuration file: $e');
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throw Exception('Failed to load config file: $e');
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}
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}
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void setEnabled(String modId, bool enabled) {
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if (mods.containsKey(modId)) {
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mods[modId]!.enabled = enabled;
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if (enabled) {
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activeMods[modId] = true;
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} else {
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activeMods.remove(modId);
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}
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}
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}
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void enableAll() {
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for (final mod in mods.values) {
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setEnabled(mod.id, true);
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}
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}
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void disableAll() {
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for (final mod in mods.values) {
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setEnabled(mod.id, false);
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}
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}
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List<List<String>> checkIncompatibilities() {
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List<List<String>> conflicts = [];
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List<String> activeModIds = activeMods.keys.toList();
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// Only check each pair once
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for (final modId in activeModIds) {
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final mod = mods[modId]!;
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for (final incompId in mod.incompatibilities) {
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// Only process if other mod is active and we haven't checked this pair yet
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if (activeMods.containsKey(incompId)) {
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conflicts.add([modId, incompId]);
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}
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}
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}
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return conflicts;
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}
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/// Generate a load order for active mods
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List<String> generateLoadOrder() {
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// Check for incompatibilities first
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final conflicts = checkIncompatibilities();
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if (conflicts.isNotEmpty) {
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throw Exception(
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"Incompatible mods selected: ${conflicts.map((c) => "${c[0]} and ${c[1]}").join(', ')}",
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);
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}
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// Reset all marks for topological sort
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for (final mod in mods.values) {
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mod.visited = false;
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mod.mark = false;
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mod.position = -1;
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}
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final result = <String>[];
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int position = 0;
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// Topological sort
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void visit(Mod mod) {
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if (!mod.enabled) {
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mod.visited = true;
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return;
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}
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if (mod.mark) {
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final cyclePath =
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mods.values.where((m) => m.mark).map((m) => m.name).toList();
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throw Exception(
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"Cyclic dependency detected: ${cyclePath.join(' -> ')}",
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);
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}
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if (!mod.visited) {
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mod.mark = true;
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// Visit all dependencies
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for (String depId in mod.dependencies) {
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if (activeMods.containsKey(depId)) {
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visit(mods[depId]!);
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}
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}
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mod.mark = false;
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mod.visited = true;
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mod.position = position++;
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result.add(mod.id);
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}
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}
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// Visit all nodes
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for (final mod in mods.values) {
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if (!mod.visited) {
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visit(mod);
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}
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}
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// Optimize for soft constraints
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return _optimizeSoftConstraints(result);
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}
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/// Calculate how many soft constraints are satisfied
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Map<String, int> _calculateSoftConstraintsScore(List<String> order) {
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Map<String, int> positions = {};
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for (int i = 0; i < order.length; i++) {
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positions[order[i]] = i;
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}
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int satisfied = 0;
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int total = 0;
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for (String modId in order) {
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Mod mod = mods[modId]!;
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// Check "load before" preferences
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for (String beforeId in mod.loadBefore) {
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if (positions.containsKey(beforeId)) {
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total++;
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if (positions[modId]! < positions[beforeId]!) {
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satisfied++;
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}
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}
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}
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// Check "load after" preferences
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for (String afterId in mod.loadAfter) {
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if (positions.containsKey(afterId)) {
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total++;
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if (positions[modId]! > positions[afterId]!) {
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satisfied++;
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}
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}
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}
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}
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return {'satisfied': satisfied, 'total': total};
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}
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/// Optimize for soft constraints using a greedy approach
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List<String> _optimizeSoftConstraints(
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List<String> initialOrder, {
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int maxIterations = 5,
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}) {
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List<String> bestOrder = List.from(initialOrder);
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Map<String, int> scoreInfo = _calculateSoftConstraintsScore(bestOrder);
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int bestScore = scoreInfo['satisfied']!;
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int total = scoreInfo['total']!;
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if (total == 0 || bestScore == total) {
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return bestOrder; // All constraints satisfied or no constraints
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}
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// Use a limited number of improvement passes
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for (int iteration = 0; iteration < maxIterations; iteration++) {
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bool improved = false;
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// Try moving each mod to improve score
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for (int i = 0; i < bestOrder.length; i++) {
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String modId = bestOrder[i];
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Mod mod = mods[modId]!;
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// Calculate current local score for this mod
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Map<String, int> currentPositions = {};
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for (int idx = 0; idx < bestOrder.length; idx++) {
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currentPositions[bestOrder[idx]] = idx;
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}
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// Try moving this mod to different positions
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for (int newPos = 0; newPos < bestOrder.length; newPos++) {
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if (newPos == i) continue;
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// Skip if move would break hard dependencies
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bool skip = false;
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if (newPos < i) {
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// Moving earlier
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// Check if any mod between newPos and i depends on this mod
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for (int j = newPos; j < i; j++) {
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String depModId = bestOrder[j];
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if (mods[depModId]!.dependencies.contains(modId)) {
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skip = true;
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break;
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}
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}
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} else {
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// Moving later
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// Check if this mod depends on any mod between i and newPos
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for (int j = i + 1; j <= newPos; j++) {
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String depModId = bestOrder[j];
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if (mod.dependencies.contains(depModId)) {
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skip = true;
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break;
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}
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}
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}
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if (skip) continue;
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// Create a new order with the mod moved
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List<String> newOrder = List.from(bestOrder);
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newOrder.removeAt(i);
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newOrder.insert(newPos, modId);
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// Calculate new score
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Map<String, int> newScoreInfo = _calculateSoftConstraintsScore(
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newOrder,
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);
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int newScore = newScoreInfo['satisfied']!;
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if (newScore > bestScore) {
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bestScore = newScore;
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bestOrder = newOrder;
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improved = true;
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break; // Break inner loop, move to next mod
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}
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}
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if (improved) break; // If improved, start a new iteration
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}
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if (!improved) break; // If no improvements in this pass, stop
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}
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return bestOrder;
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}
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List<String> loadRequired() {
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final toEnable = <String>[];
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for (final modid in activeMods.keys) {
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final mod = mods[modid]!;
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for (final dep in mod.dependencies) {
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toEnable.add(dep);
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}
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}
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for (final modid in toEnable) {
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setEnabled(modid, true);
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}
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return generateLoadOrder();
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}
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}
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String _expansionNameFromId(String id) {
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final parts = id.split('.');
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if (parts.length < 3) return id;
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final expansionPart = parts[2];
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return expansionPart.substring(0, 1).toUpperCase() +
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expansionPart.substring(1);
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}
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