Added ability to override paths. Fixed docs and typos

README.md

@@ -55,6 +55,7 @@ launcher.on('error', (e) => console.log(e.toString('utf-8')));
 | `options.installer`      | String   | Path to installer being executed.                                                         | False    |
 | `options.root`           | String   | Path where you want the launcher to work in.  like `C:/Users/user/AppData/Roaming/.mc`,   | True     |
 | `options.os`             | String   | windows, osx or linux. MCLC with auto determine the OS if this field isn't provided.      | False    |
+| `options.customArgs`     | Array    | Array of custom java arguments you want to add.                                           | False    |
 | `options.version.number` | String   | Minecraft version that is going to be launched.                                           | True     |
 | `options.version.type`   | String   | Any string. The actual Minecraft launcher uses `release` and `snapshot`.                  | True     |
 | `options.version.custom` | String   | The name of the folder, jar file, and version json in the version folder.                 | False    |
@@ -71,6 +72,20 @@ launcher.on('error', (e) => console.log(e.toString('utf-8')));
 | `options.timeout`        | Integer  | Timeout on download requests.                                                             | False    |
 | `options.window.width`   | String   | Width of the Minecraft Client                                                             | False    |
 | `options.window.height`  | String   | Height of the Minecraft Client.                                                           | False    |
+| `options.overrides`      | Object   | Json object redefining paths for better customization. Example below.                     | False    |
+```js
+let opts = {
+   otherOps...,
+   overrides: {
+       minecraftJar: "",
+       versionJson: "",
+       directory: "",
+       libraries: "",
+       natives: "",
+       assetRoot: ""
+   }
+}
+```
 
 #### Notes
 ##### Custom

components/authenticator.js

@@ -119,7 +119,7 @@ module.exports.invalidate = function(accessToken, clientToken) {
 module.exports.signOut = function(username, password) {
     return new Promise(resolve => {
         const requestObject = {
-            url: api_url + "/invalidate",
+            url: api_url + "/signout",
             json: {
                 "username": username,
                 "password": password

components/handler.js

@@ -72,8 +72,9 @@ class Handler {
 
     getVersion() {
         return new Promise(resolve => {
-            if(fs.existsSync(path.join(this.options.directory, `${this.options.version.number}.json`))) {
+            const versionJsonPath = this.options.overrides.versionJson || path.join(this.options.directory, `${this.options.version.number}.json`);
-                this.version = require(path.join(this.options.directory, `${this.options.version.number}.json`));
+            if(fs.existsSync(versionJsonPath)) {
+                this.version = require(versionJsonPath);
                 resolve(this.version);
                 return;
             }
@@ -125,10 +126,11 @@ class Handler {
             await Promise.all(Object.keys(index.objects).map(async asset => {
                 const hash = index.objects[asset].hash;
                 const subhash = hash.substring(0,2);
-                const assetDirectory = path.join(this.options.root, 'assets', 'objects', subhash);
+                const assetDirectory = this.options.overrides.assetRoot || path.join(this.options.root, 'assets');
+                const subAsset = path.join(assetDirectory, 'objects', subhash);
 
-                if(!fs.existsSync(path.join(assetDirectory, hash)) || !await this.checkSum(hash, path.join(assetDirectory, hash))) {
+                if(!fs.existsSync(path.join(subAsset, hash)) || !await this.checkSum(hash, path.join(subAsset, hash))) {
-                    const download = await this.downloadAsync(`${assetsUrl}/${subhash}/${hash}`, assetDirectory, hash);
+                    const download = await this.downloadAsync(`${assetsUrl}/${subhash}/${hash}`, subAsset, hash);
 
                     if(download.failed) failed.push(download.asset);
                 }
@@ -140,12 +142,13 @@ class Handler {
                 await Promise.all(failed.map(async asset => await this.downloadAsync(asset.url, asset.directory, asset.name)))
             }
 
-            // Copy assets to legacy if it's an older Minecarft version.
+            // Copy assets to legacy if it's an older Minecraft version.
             if(this.version.assets === "legacy" || this.version.assets === "pre-1.6") {
                 await Promise.all(Object.keys(index.objects).map(async asset => {
                     const hash = index.objects[asset].hash;
                     const subhash = hash.substring(0,2);
-                    const assetDirectory = path.join(this.options.root, 'assets', 'objects', subhash);
+                    const assetDirectory = this.options.overrides.assetRoot || path.join(this.options.root, 'assets');
+                    const subAsset = path.join(assetDirectory, 'objects', subhash);
 
                     let legacyAsset = asset.split('/');
                     legacyAsset.pop();
@@ -155,7 +158,7 @@ class Handler {
                     }
 
                     if (!fs.existsSync(path.join(this.options.root, 'assets', 'legacy', asset))) {
-                        fs.copyFileSync(path.join(assetDirectory, hash), path.join(this.options.root, 'assets', 'legacy', asset))
+                        fs.copyFileSync(path.join(subAsset, hash), path.join(assetDirectory, 'legacy', asset))
                     }
                 }));
             }
@@ -167,7 +170,7 @@ class Handler {
 
     getNatives() {
         return new Promise(async(resolve) => {
-            const nativeDirectory = path.join(this.options.root, 'natives', this.version.id);
+            const nativeDirectory = this.options.overrides.natives || path.join(this.options.root, 'natives', this.version.id);
 
             if(!fs.existsSync(nativeDirectory) || !fs.readdirSync(nativeDirectory).length) {
                 shelljs.mkdir('-p', nativeDirectory);
@@ -281,7 +284,7 @@ class Handler {
                 const libraryPath = _lib.downloads.artifact.path;
                 const libraryUrl = _lib.downloads.artifact.url;
                 const libraryHash = _lib.downloads.artifact.sha1;
-                const libraryDirectory = path.join(this.options.root, 'libraries', libraryPath);
+                const libraryDirectory = this.options.overrides.libraries || path.join(this.options.root, 'libraries', libraryPath);
 
                 if(!fs.existsSync(libraryDirectory) || !await this.checkSum(libraryHash, libraryDirectory)) {
                     let directory = libraryDirectory.split(path.sep);
@@ -316,7 +319,8 @@ class Handler {
             let type = modification || this.version;
 
             let args = type.minecraftArguments ? type.minecraftArguments.split(' ') : type.arguments.game;
-            const assetPath = this.version.assets === "legacy" || this.version.assets === "pre-1.6" ? path.join(this.options.root, 'assets', 'legacy') : path.join(this.options.root, 'assets');
+            const assetRoot = this.options.overrides.assetRoot || path.join(this.options.root, 'assets');
+            const assetPath = this.version.assets === "legacy" || this.version.assets === "pre-1.6" ? path.join(assetRoot, 'legacy') : path.join(assetRoot);
 
             if(args.length < 11) args = args.concat(this.version.minecraftArguments ? this.version.minecraftArguments.split(' ') : this.version.arguments.game);
 

components/launcher.js

@@ -13,7 +13,17 @@ class MCLCore extends EventEmitter {
     async launch(options) {
         this.options = options;
         this.options.root = path.resolve(this.options.root);
+        if(!this.options.overrides) this.options.overrides = {};
+        this.options.overrides = {
+            minecraftJar: this.options.overrides.minecraftJar ? path.join(this.options.root, this.options.overrides.minecraftJar): null,
+            versionJson: this.options.overrides.versionJson ? path.join(this.options.root, this.options.overrides.versionJson): null,
+            directory: this.options.overrides.directory ? path.join(this.options.root, this.options.overrides.directory): null,
+            libraries: this.options.overrides.libraries ? path.join(this.options.root, this.options.overrides.libraries): null,
+            natives: this.options.overrides.natives ? path.join(this.options.root, this.options.overrides.natives): null,
+            assetRoot: this.options.overrides.assetRoot ? path.join(this.options.root, this.options.overrides.assetRoot): null,
+        };
         this.handler = new handler(this);
+        const override = this.options.overrides;
 
         if(!fs.existsSync(this.options.root)) {
             this.emit('debug', '[MCLC]: Attempting to create root folder');
@@ -31,13 +41,13 @@ class MCLCore extends EventEmitter {
             await this.handler.runInstaller(this.options.installer)
         }
 
-        const directory = path.join(this.options.root, 'versions', this.options.version.number);
+        const directory = override.directory || path.join(this.options.root, 'versions', this.options.version.number);
         this.options.directory = directory;
 
         // Version JSON for the main launcher folder
         const versionFile = await this.handler.getVersion();
-        const mcPath = this.options.version.custom ? path.join(this.options.root, 'versions', this.options.version.custom , `${this.options.version.custom}.jar`):
+        const mcPath = override.minecraftJar || (this.options.version.custom ? path.join(this.options.root, 'versions', this.options.version.custom , `${this.options.version.custom}.jar`):
-            path.join(directory, `${this.options.version.number}.jar`);
+            path.join(directory, `${this.options.version.number}.jar`));
         const nativePath = await this.handler.getNatives();
 
         if (!fs.existsSync(mcPath)) {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "minecraft-launcher-core",
-  "version": "3.6.2",
+  "version": "3.7.0",
   "description": "Lightweight module that downloads and runs Minecraft using javascript / NodeJS",
   "main": "index.js",
   "dependencies": {