Why Needed: Neighbor Grid Initialization is a critical feature for particle systems that need to efficiently manage interactions between a large number of particles. This feature enables particles within a system to be aware of their neighbors’ positions and properties, facilitating complex behaviors such as flocking, swarming, and fluid dynamics, which are vital for creating realistic environmental and visual effects in games.
Explanation: In complex simulations, such as those involving fluids, crowds, or soft bodies, particles must interact with each other based on proximity and other criteria. Currently, managing these interactions in UEFN without an efficient neighbor grid can be computationally expensive and difficult to scale, especially in real-time scenarios.