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True 3D aerial and underwater pathfinding

Navigation3D

Navigation3D: sparse-voxel volumetric nav + Lazy Theta* for aerial, underwater, and ground–air hybrid pathfinding. O3DE only has ground Recast.

Overview

O3DE’s Recast only understands walkable ground. Drones, flying mounts, schools of fish, and submersibles have nowhere to path in volume space; the UE ecosystem often relies on paid third-party plugins. DawnEngine Navigation3D represents flyable/swimmable space with a sparse voxel octree, uses Lazy Theta* for smooth 3D paths, and supports ground–air hybrid “transfers”.

Key Capabilities

  • Sparse-voxel volumetric nav: proven volume navigation with bounded memory and query cost.
  • Motion models: hover (drone/helicopter) and fixed-wing (minimum turn radius).
  • Ground–air hybrid: walk → board and take off → land and walk again on one API.
  • Climbing & underwater domains: vertical climb surfaces and water volumes in the same system.
  • HTN operators: ready-made move operators for HTN.

Use Cases

  • Drone swarms, low-altitude economy, and flying mounts.
  • Underwater units and submersible simulation.
  • Military analysis and robotics training that need 3D mobility.

Navigation3D solves “how to get there”; HTN AI decides “what to do”; scale it inside World Streaming large worlds.