https://github.com/exigow/soft-physics-engine

Simple 2D Soft Physics Engine fully written in Java with libGDX
https://github.com/exigow/soft-physics-engine

Last synced: about 2 months ago
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Simple 2D Soft Physics Engine fully written in Java with libGDX

• Host: GitHub
• URL: https://github.com/exigow/soft-physics-engine
• Owner: exigow
• Created: 2014-09-27T17:18:58.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2016-05-23T17:39:41.000Z (over 8 years ago)
• Last Synced: 2024-10-13T08:13:13.534Z (3 months ago)
• Language: Java
• Homepage:
• Size: 6.29 MB
• Stars: 4
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
Soft Physics Engine

===================

![alt text] (https://raw.githubusercontent.com/exigow/soft-physics-engine/master/screenshots/logo.png "Soft Physics Engine logo")

A simple 2D soft physics engine fully written in Java.

Design goal

-----------

The main goal is to provide easy-to-use, feature-rich physics engine completely written in Java, where each model can be parametrized on-the-fly during simulation by simply assigning the new value of the field. It is as simple as it sounds.

Demos

-----

Library contains several usage examples in an interesting way, or showing some feature.

* [Cloth rendering demo] (https://github.com/exigow/soft-physics-engine/tree/master/src/demos/cloth) ([screenshot] (https://raw.githubusercontent.com/exigow/soft-physics-engine/master/screenshots/cloth-screenshot.png)) - textured grid-based cloth

* [Tree demo] (https://github.com/exigow/soft-physics-engine/tree/master/src/demos/tree) ([screenshot] (https://raw.githubusercontent.com/exigow/soft-physics-engine/master/screenshots/tree-demo-screenshot.png)) - building tree with angle joint

* [Rope rendering demo] (https://github.com/exigow/soft-physics-engine/tree/master/src/demos/rope) ([screenshot] (https://raw.githubusercontent.com/exigow/soft-physics-engine/master/screenshots/rope-demo-screenshot.png)) - textured rope smoothed using Bezier curves

* [Angle joint demo] (https://github.com/exigow/soft-physics-engine/tree/master/src/demos/angle) - stiffened rope with angle joint

Demos are interactive. You can grab every particle using *left mouse button* on desktop. Multi-touch has been tested on mobile devices too.

Dependencies

------------

* [libGDX] (https://github.com/libgdx/libgdx) - cross-platform Java game development framework

    Used **only to show demos** including window creation, particles/joints rendering, texturing, mouse gripping, etc. This part can be easily converted into something else like Slick2d or raw LWJGL.

* [JOML] (https://github.com/JOML-CI/JOML) -  Java math library for OpenGL rendering calculations

    Responsible for engine's math. This library is fast, GC-friendly and produces clean code (this is the reason why I do not use the built-in math with libGDX, which is fast ofc, but not readable).

Future

------

Things to do:

* parts of the world are just mutable DTO's (data transfer objects), created using static inner classes (builders or smth) to achieve major design goal (still wip)

* add minimal sample to README.md

* collisions (to debate)

* fixed constant length joint (temporarily it can be achieved with 'hard spring' but may cause some glitches)

* vector calculations on primitive types, losing code readability :( (or find another way to improve the performance of the GC)

* particle weight