Velthoric

Velthoric lets physical bodies such as converted blocks, cars, motorcycles and ragdolls behave under simulated forces. Standard blocks can be turned into dynamic objects that fall and collide, while ropes and cloth respond to solid objects. Objects float or sink in water and lava according to their weight and shape, and living entities react through physical skeletal systems. The engine is built on Structure of Arrays data layout, which the author describes as handling thousands of objects without a large frame cost. Physics bodies are saved with the world and kept in sync between server and client.

The mod is a proof of concept, and the author notes that the project is still in progress and its features may change. It depends on Architectury API and Fabric API, which must be installed next to it on Fabric, while Forge, NeoForge and Quilt builds need Architectury API. Tree Falling, InteractiveMC and Vetheroac require it. Because it runs on both sides, the server and every player need the mod. The code is released under the GNU Lesser General Public License v3.0 only, and the project is open source.