Build with Fx2D

These guides are organized around the parts of an application you will actually build: author a scene, run it with or without a window, then add interaction and game logic.

• Scene authoring — create entities, shapes, physical properties, and joints.
• Math and geometry — use vectors, poses, transforms, and the unified shape model safely.
• Collision setup — configure colliders, materials, sensors, filtering, and CCD.
• Constraints — assemble direct XPBD constraints or choose a motorized joint.
• Headless simulation — run the same physics core without a renderer.
• Renderer — own the window, camera, frame timing, and draw callbacks.
• Input — consume keyboard and mouse state in visual or headless applications.
• Joints and motors — use revolute and prismatic control modes, and the click-drag mouse joint.
• Queries — ray casts, overlaps, and point queries for gameplay and tools.
• Contacts and sensors — respond to collisions and trigger volumes.
• Entity groups — operate on named sets of bodies safely.

For the implementation details behind these building blocks, see the collision pipeline and the XPBD solver.