Adding Custom Achievements (1.33.0 and newer)

To add custom achievements to JS Engine, Copy this text and paste it in YourModFolder/data/achievements.json

You can drop your achievement images in YourModFolder/images/achievements/, but be sure to read the readme file inside it if you extracted the Mod Template zip.

Here are all the LUA callbacks related to Achievements:

getAchievementScore(name:String)

Get the current score of an achievement.

• name - The save name of the achievement.

setAchievementScore(name:String, value:Float = 1, saveIfNotUnlocked:Bool = true)

Set the specified achievement's score.

• value - The achievement's new score.
• saveIfNotUnlocked - Whether or not the game should save that score if the achievement isn't unlocked.

addAchievementScore(name:String, value:Float = 1, saveIfNotUnlocked:Bool = true)

Adds value to the specified achievement's score.

unlockAchievement(name:String)

Unlocks the specified achievement.

isAchievementUnlocked(name:String)

Returns whether or not the specified achievement is unlocked.

achievementExists(name:String)

Returns whether or not the specified achievement exists.