Zeta-Physics-Engine

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About

• 3D header-only mechanics physics engine.
• Created as an easy-to-use yet efficient physics engine for any 3D project.

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Features

• Rigid and Static body support.
• 6 Supported Primitives:
  1. Ray3D
  2. Line3D
  3. Plane
  4. Sphere
  5. AABB
  6. Cube (OBB)
• Collision detection and resolution.
• Common FPS rates as predefined constants (e.g. FPS_60).
• Spatial Partitioning - can be disabled with #define DISABLE_SPATIAL_PARTITIONING in one .cpp file above #include <zeta/physicshandler.h>.

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To Use

• Clone the Zeta repository.
• Copy the include/zeta folder into your include directory.
• #include <zeta/physicshandler.h in the file you want to use Zeta in.

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Getting Started

The following code snippet provides an example of how to get Zeta up and running in your program.

#include <ZETA/physicshandler.h>

int main() {
    // Create a physics handler with the default settings
    Zeta::Handler handler;

    // Create the colliders
    Zeta::Sphere* s1 = new Zeta::Sphere(ZMath::Vec3D(100.0f, 120.0f, 100.0f), 50.0f);
    Zeta::Sphere* s2 = new Zeta::Sphere(ZMath::Vec3D(350.0f, 500.0f, -340.0f), 200.0f);

    // Create some rigid bodies
    Zeta::RigidBody3D rb1(
        s1->c,                       // centerpoint
        50.0f,                       // mass
        0.9f,                        // coefficient of restitution
        0.975f,                      // linear damping
        Zeta::RIGID_SPHERE_COLLIDER, // collider type
        s1                           // collider
    );

    Zeta::RigidBody3D rb2(
        s2->c,                       // centerpoint
        100.0f,                      // mass
        0.95f,                       // coefficient of restitution
        0.8f,                        // linear damping
        Zeta::RIGID_SPHERE_COLLIDER, // collider type
        s2                           // collider
    );

    // Add the rigid bodies to the handler
    handler.addRigidBody(&rb1);
    handler.addRigidBody(&rb2);

    // Program's dt loop
    float dt = 0.0f;

    // Note: windowShouldNotClose would be replaced with the exit window condition in the user's graphics library
    while (windowShouldNotClose) {
        /* Rendering/Drawing code would go here */

        handler.update(dt); // The handler subtracts from dt for you
        // Note: getEllapsedTime() would be replaced with the equivalent in the user's graphics library
        dt += getEllapsedTime();
    }

    return 0;
};

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Resources for Contributing

• If you want to get started contributing to Zeta, check out our resources page for some important information

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Bug Reports

• To report a bug open an issue detailing the bug with relevant screenshots and code snippets and tag it with the "bug" tag.

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A 2D Version

• Zeta2D is a 2D version of this physics engine.
• Check it out if you're working on a 2D project.

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Planned Additions

• Kinematic Bodies
• Rotational Kinematics
• Add source files and move the header-only version to a branch
• Arbitrary Polyhedrons

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Contributors

• Utsawb Lamichhane
• Thomas Ducote
• Lenny Tanui
• Thomas Masha
• Hailey Trinh
• Franco Martinez
• Adrian Cortes
• Sai Sudarshan Barath
• Colin Nerren
• Junyi Wu
• Karson Mann