Aether.Physics2D.KNI

Aether.Physics2D

Aether.Physics2D is a 2D collision detection system.

Documentation: https://nkast.github.io/Aether.Physics2D/

Web Demos:

• HelloWorld
• Samples

Features

• Continuous collision detection (with time of impact solver)
• Contact callbacks: begin, end, pre-solve, post-solve
• Convex and concave polyons and circles.
• Multiple shapes per body
• Dynamic tree and quad tree broadphase
• Fast broadphase AABB queries and raycasts
• Collision groups and categories
• Sleep management
• Friction and restitution
• Stable stacking with a linear-time solver
• Revolute, prismatic, distance, pulley, gear, mouse joint, and other joint types
• Joint limits and joint motors
• Controllers (gravity, force generators)
• Tools to decompose concave polygons, find convex hulls and boolean operations
• Factories to simplify the creation of bodies

Usage

private World _world;
private Body _playerBody;
private Body _groundBody;
private float _playerBodyRadius = 1.5f / 2f; // player diameter is 1.5 meters
private Vector2 _groundBodySize = new Vector2(8f, 1f); // ground is 8x1 meters

//Create a world
_world = new World();

// Create the player
Vector2 playerPosition = new Vector2(0, _playerBodyRadius);
_playerBody = _world.CreateBody(playerPosition, 0, BodyType.Dynamic);
Fixture pfixture = _playerBody.CreateCircle(_playerBodyRadius, 1f);
// Give it some bounce and friction
pfixture.Restitution = 0.3f;
pfixture.Friction = 0.5f;

// Create the ground
Vector2 groundPosition = new Vector2(0, -(_groundBodySize.Y / 2f));
_groundBody = _world.CreateBody(groundPosition, 0, BodyType.Static);
Fixture gfixture = _groundBody.CreateRectangle(_groundBodySize.X, _groundBodySize.Y, 1f, Vector2.Zero);
gfixture.Restitution = 0.3f;
gfixture.Friction = 0.5f;

// Update the world
float dt = 1f/60f;
_world.Step(dt);

Sponsors ❤️

While Aether.Physics2D is free and open-source, maintaining and expanding the library requires ongoing effort and resources. We rely on the support of our community to continue delivering top-notch updates, features, and support. By becoming a Sponsor, you can directly contribute to the growth and sustainability of Aether.Physics2D.