A 2D collision detection and physics library written in C.

Related tags

Utilities c physics raylib physics-engine stb physics-simulation physics-2d rigid-body-dynamics sokol gnu99 ferox
Overview

c-krit/ferox

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A 2D collision detection and physics library written in C.

WARNING: This library is in an early alpha stage, use it at your own risk.

Documentation — Examples — Prerequisites

Features

Bricks!

Since this project was made to learn how a physics engine works, I am not planning to add a lot of features to it.

  • Broad-phase collision detection with spatial hashing algorithm
  • Narrow-phase collision detection with SAT (Separating Axis Theorem)
  • 'Sequential Impulse' iterative constraint solver
  • Semi-implicit (symplectic) Euler integrator

Prerequisites

  • GCC version 9.4.0+
  • GNU Make version 4.1+
  • Git version 2.17.1+
$ sudo apt install build-essential git

Optional

Make sure you have installed raylib 3.7.0+ to compile all examples.

Building

This project uses GNU Make as the build system.

$ git clone https://github.com/c-krit/ferox
$ cd ferox
$ make

You can also build this library as standalone-mode to avoid raylib.h header inclusion and functions that depend on raylib:

$ make BUILD=STANDALONE

Cross-compiling for Windows

Make sure to set the value of RAYLIB_PATH variable to cross-compile for Windows:

$ make RAYLIB_PATH=../raylib TARGET_OS=WINDOWS

References

License

MIT License

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Comments
  • Fixed macro expansions inside 'broadphase.c'

    Fixed macro expansions inside 'broadphase.c'

    I fixed a couple macro expansions that were throwing errors inside MSVC, along with another error inside 'utils.h' related to the value of INVERSE_TWO_PI (ALL changes are properly discussed via comments inside the source files).

    enhancement 
    opened by Fallbork 1
Releases(v0.6.3)

  • v0.6.3(Oct 9, 2022)

  • v0.6.2(Aug 14, 2022)

  • v0.6.1(Aug 8, 2022)

  • v0.6.0(May 16, 2022)

    • Fixed a bug where Makefile would not show colored messages on MSYS2.
    • Fixed inefficient code in frQuerySpatialHash(). (https://github.com/c-krit/ferox/pull/9)
    • Renamed variables in collision module to keep the naming convention consistent.
    Source code(tar.gz)
    Source code(zip)

  • v0.5.6(Apr 10, 2022)

    • Fixed a problem where compile errors could occur due to macro expansions when using MSVC. (https://github.com/c-krit/ferox/pull/8)
    • Fixed inconsistent naming convention. (https://github.com/c-krit/ferox/issues/7)
    Source code(tar.gz)
    Source code(zip)

  • v0.5.5(Apr 3, 2022)

  • v0.5.4(Feb 20, 2022)

    • Fixed a bug where frCloneShape() would not copy is_rect property.
    • Fixed a bug where frComputeShapeRaycast() would not work properly against polygons.
    Source code(tar.gz)
    Source code(zip)

  • v0.5.3+1(Feb 18, 2022)

  • v0.5.2(Feb 15, 2022)

  • v0.5.1(Feb 12, 2022)

  • v0.5.0(Feb 11, 2022)

    • Added frVec2RotateTx() function.
    • Renamed fr_vec2.h to fr_math.h.
    • Optimized frVec2Transform() function.
    • Tweaked default values of FR_DYNAMICS_CORRECTION_DEPTH_SCALE and FR_DYNAMICS_CORRECTION_DEPTH_THRESHOLD in ferox.h.
    Source code(tar.gz)
    Source code(zip)

  • v0.4.2(Feb 10, 2022)

  • v0.4.1(Feb 6, 2022)

    • Added closest field to frRay struct, which allows the user to retrieve only the closest raycast hit.
    • Added frQueryWorldSpatialHash() function, which queries the world for rigid bodies that collide with the given Rectangle.
    • Fixed unexpected results for raycast functions in some situations.
    Source code(tar.gz)
    Source code(zip)

  • v0.4.0+1(Feb 6, 2022)

    • Added bounds checks for frAddToSpatialHash() and frQuerySpatialHash().
    • Inlined all Vector2 operations, which significantly improves the simulation performance.
    • Reviewed several functions including frJarvisMarch(), frNormalizeAngle(), and frResolveCollision().
    • Updated the default value of FR_WORLD_MAX_BODY_COUNT to 192 (from 128).
    Source code(tar.gz)
    Source code(zip)

  • v0.3.6(Jan 29, 2022)

  • v0.3.5(Jan 26, 2022)

    • Added frComputeShapeCollision() and frComputeBodyCollision() functions.
    • Removed frComputeCollision() function.
    • Updated default broad-phase cell size to 3.0f.
    Source code(tar.gz)
    Source code(zip)

  • v0.3.4(Jan 23, 2022)

  • v0.3.3+1(Jan 19, 2022)

  • v0.3.2(Jan 18, 2022)

  • v0.3.1+1(Jan 17, 2022)

    • Added frCreateRectangle() and frIsInWorldBounds() functions.
    • Fixed TARGET_OS variable in Makefiles, which prevented the users from compiling this library properly with MSYS2 on Windows.
    Source code(tar.gz)
    Source code(zip)

  • v0.3.0(Jan 10, 2022)

    • Added circles example.
    • Removed frEdge struct from collision module.
    • Optimized several functions in collision, dynamics, geometry, and utils modules.
    • Updated animations for the examples.
    • Updated external libraries. (stb_ds.h and sokol_time.h)
    Source code(tar.gz)
    Source code(zip)

  • v0.2.3(Jan 2, 2022)

    • Added new data types: frRay and frBodyFlag.
    • Replaced frComputeRaycast() function with frComputeBodyRaycast(), frComputeShapeRaycast() and frComputeWorldRaycast().
    • Updated jump example to use a collision pre-solve callback.
    Source code(tar.gz)
    Source code(zip)

  • v0.2.2(Dec 28, 2021)

  • v0.2.1(Dec 25, 2021)

    • Added README.md in examples directory.
    • Fixed incorrect timestep code in frSimulateWorld().
    • Fixed return type of frSetBodyUserData().
    • Updated comments for vector math functions.
    Source code(tar.gz)
    Source code(zip)

  • v0.2.0(Nov 21, 2021)

    • Added new data types: frCollisionCallback and frCollisionHandler.
    • Added new functions: frGetBodyUserData(), frSetBodyUserData(), frGetWorldCollisionHandler(), and frSetWorldCollisionHandler().
    • Removed frReleaseWorldBodies() function.
    • Minor improvements for frComputeRaycast() function.
    Source code(tar.gz)
    Source code(zip)

  • v0.1.3(Nov 10, 2021)

Owner
c-krit
模倣과 創作
c-krit
GitHub https://github.com/c-krit/ferox
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