FriceEngine

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An easy, light, native game engine running on JVM.

• Why easy?
  A flappy bird game uses just 56 lines of Java code only.
  Written in Kotlin, also work on Java, JRuby, Groovy, Scala and other JVM languages.

• Why light?
  The release build jar is about 1.6mb (with a 1mb Kotlin runtime) only.

• Why native?
  This engine is completely platform-independent: no JNI linkage, no native methods.

View Document to learn how to use Frice Engine.

Screenshots

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Build

Gradle:

repositories { jcenter() }
dependencies { compile 'org.frice:engine:1.8.5' }

Alternatively, you can follow the instruction from JitPack.
Alternatively, you can download a jar from the release page.

Features

This engine is based on Java's built-in GUI framework, both Swing and JavaFX. "Platform" here refers to Swing/JavaFX.

Platform dependent

These features are differently implemented in Swing/JavaFX.
Since this project is still in progress, the unsupported features will soon be available.

Feature	Swing	JavaFX
Life cycle	√	√
Dialogs	√	√
Cursor overriding	√	√
Screenshot	√	√
Buttons	√	√
Full screen	√	√
Always on top	√	√
Text font/size	√	√
Multi-instances	√	×
Resizability	√	√
Key listener	√	√
Text measuring	√	√

Platform independent

• Animations (moving, scaling, rotating, accelerating, chasing, approaching, etc.)
• Audio playing (*.wav, *.mp3) by JavaSound/JavaFX Media
• Clock system, timers
• Delayed event manager
• Automatic garbage collection (optional, objects far from the screen will be removed)
• Resource manager (caching IO)
• File/Image/Color/URL utils
• Game objects
• Frame animations
• Key-value database
• Particle effects
• Attaching game objects
• Collision detection with collision box

DSL

See DSL for FriceEngine

Contributions

Feel free to open issue for feature request, bug reports, etc.
This is generally a personal project, so please do give your genuine suggestions.

This project is using Issue-Driven-Development.
Issues are well organized and used to managed tasks.

Demos

See FriceDemo
And see TouhouDemo