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7.3

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The Physics Question

By Keith Cross on May 20, 2008

In the Latest Question of the Week on the Earthrise Forums, the folks at Earthrise delve into the game's physics engine.

There’s been a fair bit of discussion about jumping and physics. Can you tell us a little about the type of physics we can expect to see? Will there be ragdoll style effects? What about jumping? Will we be able to jump in combat?

Physics
While designing Earthrise engine we tried to build the best realistic experience and in the same time balance client requirements and server load. The physics engine will run simultaneously on the client and on the server. The server will ensure that the physics results from the client are feasible and prevent cheating. We are using a 3rd party physics core, which can take advantage of hardware and GPU acceleration and also have some internally-coded subsystems. Player movement and control is governed by the physics engine – forces such as gravity or wind (and other) will affect players, NPCs, and other game objects. Player mounts (vehicles) have mass and their movement and collisions are generated by the physics engine. Visual effects, such as particle systems, explosion blast waves, and projectiles will use the physics engine too, on the client side. The audio subsystem will use physics world and object materials to generate proper sound effects.