GPL v3, see http://www.gnu.org/licenses/gpl.html

HMCL is a Minecraft launcher which supports Mod management, game customizing, auto installing(Forge, LiteLoader and OptiFine), modpack creating, UI customizing and so on.

If you want to submit a pull request, there're some requirements:

• IDE: Netbeans 8.1
• Compiler: Java 1.8 and libraries only supports Java 1.7(because of retrolambda).
• Do NOT modify gradle files.

• package HMCLCore/org.jackhuang.hmcl.util: HMCL development utilities.
• package HMCL/org.jackhuang.hmcl: HMCL UI core.
• package HMCLCore/org.jackhuang.hmcl.core: HMCL game launcher core.
• package HMCLAPI(HMCL)/org.jackhuang.hmcl.api: HMCL API, see API section.
• Folder HMCLCore/src/main/resources/org/jackhuang/hmcl/lang contains language files.

• When you do decide to modify this app, please and you MUST delete HMCL/org.jackhuang.hmcl.util.CrashReporter, or errors your code cause will be sent to my server.
• package org.jackhuang.hmcl.util.logging: repackaged Apache Log4j, Apache License 2.0.
• package com.google.gson: Apache License 2.0
• package org.jackhuang.hmcl.laf.ui: contains some NimbusLAF's code belonging to Sun Microsystems under LGPL.

HMCLAPI is based on Event bus. There are all events below.

• org.jackhuang.hmcl.api.event

• OutOfDateEvent - you can cancel checking new versions and upgrading by this event.

• org.jackhuang.hmcl.api.event.config

• AuthenticatorChangedEvent
• DownloadTypeChangedEvent
• ThemeChangedEvent

• org.jackhuang.hmcl.api.event.launch

• LaunchEvent
• LaunchSucceededEvent
• LaunchingStateChangedEvent
• ProcessingLaunchOptionsEvent
• ProcessingLoginResultEvent

• org.jackhuang.hmcl.api.event.process

• JVMLaunchFailedEvent
• JavaProcessExitedAbnormallyEvent
• JavaProcessStartingEvent
• JavaProcessStoppedEvent

• org.jackhuang.hmcl.api.event.version

• LoadedOneVersionEvent
• RefreshedVersionsEvent
• RefreshingVersionsEvent

You can also add tabs to root window or add authenticators through IPlugin.

• A valid plugin will have a main class that implements org.jackhuang.hmcl.api.IPlugin. HMCL will search all jar files in plugins folder and load classes that implements IPlugin.
• If you want to debug, use option: --plugin=<Your IPlugin Class Name> and add your jar to classpath.
• You'd better only access org.jackhuang.hmcl.api.*, and other classes may change in different versions.