Dependency Graph-based Reactivity for Virtual Environments

In Virtual Environments (VEs), the system must quickly respond to user actions and accurately display the result. Current solutions on the Unity3D game engine often respond too slowly and display temporarily inaccurate or misleading states, resulting in low user satisfaction. To alleviate this problem, we develop a reactive programming approach that encodes the complex relationships among Unity3D game components in a dependency graph and then uses the graph to order the updates of the components without violating the dependency constraints. This enables more timely updates and more accurate visualizations, potentially providing users with a more satisfying experience. We evaluate our approach by comparing its performance with native Unity3D and with UniRx, the Reactive Extensions library for the Unity3D platform.