A straightforward questing system, with scripting support, written in Java. Questy is licensed under the Mozilla Public License, version 2.0. See the LICENSE file for more details.
##Using Questy
Questy is pretty simple to use in an application. You'll need to start by picking a ProgressStore implementation for storing progress into quests. Implementations of ProgressStore can be found here. The implementation very much depends on your needs. You may also write your own implementation by implementing the ProgressStore interface. Once you've got a ProgressStore sorted, you'll want to instantiate a QuestManager object. new SimpleQuestManager(ProgressStore) is how you'll likely achieve this. Note that SimpleProgressStore is not thread-safe. You may again also write your own QuestManager by implementing the QuestManager interface. If you wish to write an implementation of either ProgressStore or QuestManager, see 'Writing your own implementations'.
From here, you can load any progression that has been saved in the past (questManager.loadProgression()). You'll want to remember to save it at the end of your application too (questManager.saveProgression()).
Once you have the basics started, you can start with the actual quests. Quests are loaded with QuestLoaders. Questy has implementations of QuestLoader to load Quests written in JavaScript and YAML, at time of writing. You can use these, and you can also write your own QuestLoader (notice a theme here? Questy is abstracted enough that most things can be changed if you wish). However, Quests can also be loaded in Java, using the QuestBuilder, specifically QuestBuilder.begin(questManager, name).
When all the Quests are loaded, you can do things with them. If you're adding quests to your zombie game, for example, you'll want to update the progress of peoples' zombie killing objective when they kill a zombie. When progress is updated, a ProgressUpdateEvent is called. This allows you to track it all in one place instead of duplicating code whenever you update progress.
For the best current examples of the usage of Questy, see https://github.com/DziNeIT/CraftQuesty
###Writing your own implementations
Questy allows the user to write and use their own implementations of QuestManager, ProgressStore and QuestLoader. If you wish to, we would love it if you sent us a pull request containing your version. It never hurts to have more options.
To understand more about writing implementations of these interfaces, it is probably a good idea to read the JavaDocs, as they document what methods in each interface should do.