LCM Nav3D Documentation Production-grade volumetric 3D navigation for Unreal Engine 5. Sparse voxel octree pathfinding, GPU voxelization, 10,000+ Mass Entity agents and true-3D EQS. https://lcmnav3d.github.io/ 2026-08-23T00:00:00Z L. Charitha Madhushanka Copyright (c) 2026 L. Charitha Madhushanka. All rights reserved. LCM 3D Navigation AI Docs | 3D Pathfinding for Unreal Engine https://lcmnav3d.github.io/ 2026-08-23T00:00:00Z Production-grade volumetric 3D navigation for Unreal Engine 5. Sparse voxel octree pathfinding, GPU voxelization, 10,000+ Mass Entity agents and true-3D EQS. Nav3D vs Recast Navmesh for Flying AI in Unreal Engine https://lcmnav3d.github.io/nav3d-vs-recast.html 2026-08-23T00:00:00Z Why Unreal's Recast navmesh cannot represent open air, where each flying-AI workaround breaks down, and when volumetric SVO navigation is the right answer instead. Install LCM Nav3D in Unreal Engine 5 - Fab or Manual Setup https://lcmnav3d.github.io/installation.html 2026-08-23T00:00:00Z Step-by-step install of the LCM Nav3D plugin into an Unreal Engine 5.2-5.8 project, from Fab or by hand, plus how to verify the install with a demo map. Core Concepts: Sparse Voxel Octree Navigation | LCM Nav3D https://lcmnav3d.github.io/core-concepts.html 2026-08-23T00:00:00Z How LCM Nav3D carves empty air into a sparse voxel octree and paths through it. Covers the navigation manager actor, world extent, voxel size and clearance. Your First Flying AI Agent in Unreal Engine | LCM Nav3D https://lcmnav3d.github.io/your-first-flying-agent.html 2026-08-23T00:00:00Z Build a pawn that flies through true 3D space to a goal in Unreal Engine, using a navigation manager, an AIController and one LCM Fly To task. No C++ needed. Flying AI with StateTree in Unreal Engine | LCM Nav3D https://lcmnav3d.github.io/statetree-agent.html 2026-08-23T00:00:00Z Author identical 3D flight behaviour in StateTree instead of a Behavior Tree. Swap RunBehaviorTree for a StateTreeAIComponent and bind the Fly To task target. Dynamic Obstacles and Runtime Rerouting | LCM Nav3D https://lcmnav3d.github.io/dynamic-obstacles.html 2026-08-23T00:00:00Z Add a Dynamic Obstacle component to any moving actor. LCM Nav3D restamps the octree and agents reroute live around doors, platforms and destructible cover. Mass Entity Crowds: 10,000+ 3D Agents | LCM Nav3D https://lcmnav3d.github.io/mass-entity-crowds.html 2026-08-23T00:00:00Z Add one trait to a Mass Entity Config and a crowd navigates in full 3D through the Unreal ECS. No per-agent controller, no tick function and no code required. True 3D Tactical EQS Queries in Unreal | LCM Nav3D https://lcmnav3d.github.io/tactical-eqs.html 2026-08-23T00:00:00Z LCM Nav3D ships EQS generators and tests that work in true 3D: candidate points anywhere in the navigable volume, scored by volumetric line-of-sight and cover. AI Perception to Volumetric Threat Tracking | LCM Nav3D https://lcmnav3d.github.io/ai-perception.html 2026-08-23T00:00:00Z Wire Unreal's UAIPerceptionComponent into LCM Nav3D through the AI Perception Bridge, so perceived threats feed true-3D EQS queries for flanking and cover. Hybrid Recast + 3D Navigation in One Level | LCM Nav3D https://lcmnav3d.github.io/hybrid-recast.html 2026-08-23T00:00:00Z Run walking agents on Recast and flying agents on the SVO in one level. The Crowd Avoidance Bridge lets Detour RVO steer Recast agents around LCM Nav3D pawns. 3D Nav Links and Volumetric Area Modifiers | LCM Nav3D https://lcmnav3d.github.io/nav-links-and-areas.html 2026-08-23T00:00:00Z Vertical ladders, jump shafts and teleporters via ULcmNavLinkComponent, plus volumetric cost overlays for water, storms and danger zones via NavArea modifiers. Reading Agent State in the Gameplay Debugger | LCM Nav3D https://lcmnav3d.github.io/gameplay-debugger.html 2026-08-23T00:00:00Z LCM Nav3D adds its own category to Unreal's stock Gameplay Debugger. Press the debugger key in PIE, pick an agent and read per-agent and plugin-wide state live. BT Wait: Use the Stock UBTTask_Wait Node | LCM Nav3D https://lcmnav3d.github.io/bt-wait.html 2026-08-23T00:00:00Z Unreal Engine's stock Wait task works as-is with LCM Nav3D flying agents. The pattern, why no plugin variant ships, and the one LCM Nav3D-specific alternative. BT IsAtLocation: Use the Stock UE5 Decorator | LCM Nav3D https://lcmnav3d.github.io/bt-is-at-location.html 2026-08-23T00:00:00Z UBTDecorator_IsAtLocation already works on LCM Nav3D pawns. Three-step usage, why no plugin-specific variant exists, and when the path-finding variant helps. BT LookAt: Use UBTTask_RotateToFaceBBEntry | LCM Nav3D https://lcmnav3d.github.io/bt-look-at.html 2026-08-23T00:00:00Z Unreal's stock Rotate to Face BB Entry task covers both LookAt and TurnInPlace for LCM Nav3D agents. Setup, tuning and when a custom rotation task is worth it. BT TurnInPlace: Stock Rotate + DefaultFocus | LCM Nav3D https://lcmnav3d.github.io/bt-turn-in-place.html 2026-08-23T00:00:00Z Turn an LCM Nav3D agent in place with Unreal's stock rotation task, and hold facing during other tasks with the DefaultFocus service. Plus constant-rate turns. BT HealthBelow: Blackboard + Decorator Pattern | LCM Nav3D https://lcmnav3d.github.io/bt-health-below.html 2026-08-23T00:00:00Z Unreal ships all you need: a Float blackboard key plus a Blackboard-Compare decorator. The pattern, a GameplayTag variant, and why no LCM Nav3D node ships. BT PerceptionRelay: Bind the Delegate Directly | LCM Nav3D https://lcmnav3d.github.io/bt-perception-relay.html 2026-08-23T00:00:00Z UAIPerceptionComponent already emits perception updates as a delegate. Bind it in your AI controller and write to a blackboard key - no custom BT service needed. BT MemoryDecay: Use GetLastStimulusLocation | LCM Nav3D https://lcmnav3d.github.io/bt-memory-decay.html 2026-08-23T00:00:00Z Unreal's UAIPerceptionComponent already tracks per-actor last-known stimulus location with age. Use it as a BT service instead of a hand-rolled decay timer. Editor Tools: Wizard, Health Check, Auto-Tuner | LCM Nav3D https://lcmnav3d.github.io/editor-tools.html 2026-08-23T00:00:00Z Every LCM Nav3D panel behind the Nav3D toolbar button: the Welcome screen, Manager panel, Bake Volumes, Setup Wizard, Health Check and the Auto-Tuner. Settings Reference: LcmNavigationManagerSVO | LCM Nav3D https://lcmnav3d.github.io/settings.html 2026-08-23T00:00:00Z Every field on the LCM Nav3D navigation manager, with verified defaults and limits: setup, voxels, collision, performance, skeleton, debug and runtime state. Troubleshooting 3D Navigation Problems | LCM Nav3D https://lcmnav3d.github.io/troubleshooting.html 2026-08-23T00:00:00Z LCM Nav3D problems in the order people hit them: agents that will not move, "no path found", ignored geometry, dead dynamic obstacles and performance issues. 6-DOF Flight and Swim Locomotion Reference | LCM Nav3D https://lcmnav3d.github.io/flight-locomotion.html 2026-08-23T00:00:00Z Physically plausible 6-DOF locomotion for drones, birds and fish, layered on LCM Nav3D guidance. Archetypes, the animation contract, tuning and determinism. Mass Entity Trait Reference | LCM Nav3D https://lcmnav3d.github.io/mass-traits.html 2026-08-23T00:00:00Z Every LCM Nav3D Mass Entity trait, the combination matrix, the editor validator and the one rule you must not break: exactly one movement trait per agent. API Reference: Blueprint, BT, StateTree, Mass | LCM Nav3D https://lcmnav3d.github.io/api-reference.html 2026-08-23T00:00:00Z Every LCM Nav3D class, function and property you can reach from Blueprint, the Details panel, a Behaviour Tree, a StateTree or a Mass Entity config.