const child = require('child_process'); const event = require('./events'); const path = require('path'); const handler = require('./handler'); const fs = require('fs'); module.exports = async function (options) { if(!fs.existsSync(options.root)) fs.mkdirSync(options.root); if(options.clientPackage) { await handler.extractPackage(options.root, options.clientPackage); } const directory = path.join(options.root, 'versions', options.version.number); options.directory = directory; const versionFile = await handler.getVersion(options.version.number, options.directory); const mcPath = options.version.custom ? path.join(options.root, 'versions', options.version.custom , `${options.version.custom}.jar`): path.join(directory, `${options.version.number}.jar`); const nativePath = await handler.getNatives(options.root, versionFile, options.os); if (!fs.existsSync(mcPath)) { await handler.getJar(versionFile, options.version.number, directory); } let forge = null; let custom = null; if(options.forge) forge = await handler.getForgeDependencies(options.root, versionFile, options.forge.path); if(options.version.custom) custom = require(path.join(options.root, 'versions', options.version.custom, `${options.version.custom}.json`)); const args = []; // Jvm let jvm = [ '-XX:-UseAdaptiveSizePolicy', '-XX:-OmitStackTraceInFastThrow', '-Dfml.ignorePatchDiscrepancies=true', '-Dfml.ignoreInvalidMinecraftCertificates=true', `-Djava.library.path=${nativePath}`, `-Xmx${options.memory.max}M`, `-Xms${options.memory.min}M` ]; jvm.push(await handler.getJVM(versionFile, options)); if(options.customArgs) jvm = jvm.concat(options.customArgs); const classes = await handler.getClasses(options, versionFile); const classPaths = ['-cp']; if(forge) { classPaths.push(`${options.forge.path};${forge.paths.join(';')};${classes.join(';')};${mcPath}`); classPaths.push(forge.forge.mainClass) } else { classPaths.push(`${mcPath};${classes.join(";")}`); classPaths.push(versionFile.mainClass || custom.mainClass); } // Download version's assets await handler.getAssets(options.root, versionFile); // Launch options. Thank you Lyrus for the reformat <3 const modification = forge ? forge.forge : null || custom ? custom : null; const launchOptions = await handler.getLaunchOptions(versionFile, modification, options); const launchArguments = args.concat(jvm, classPaths, launchOptions); const minecraft = child.spawn(options.javaPath ? options.javaPath : 'java', launchArguments); minecraft.stdout.on('data', (data) => event.emit('data', data)); minecraft.stderr.on('data', (data) => event.emit('error', data)); minecraft.on('close', (code) => event.emit('close', code)); };