Bridge Engine – Open World AI & NPC Vehicle System
GMTech Studio
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Create dynamic NPCs, vehicles, and open-world AI systems with a unified NPC=Player architecture. Plug & play, scalable, and NavMesh-free.The core scripts and logic are compatible with all render pipelines (Built-in, URP, HDRP). The demo materials are set up for the Built-in Render Pipeline but can be easily upgraded using Unity's standard material converterBRIDGE ENGINE: Open World AI & Interaction Framework------------------------------------------------------------Build Open World AI Systems in Minutes — Not MonthsCreate dynamic NPCs, vehicle interactions, and large-scale simulation systems with a unified AI framework.Bridge Engine allows you to build complex open-world systems without relying on NavMesh or complicated setups.------------------------------------------------------------Bridge Engine is a unified open-world AI framework designed for large-scale and dynamic environments.It enables NPC behavior, vehicle interaction, and navigation systems to work seamlessly together.------------------------------------------------------------🔥 True NPC = Player ArchitectureAt the core of the system lies a true NPC = PLAYER architecture.AI agents and player-controlled characters share the exact same locomotion system, interaction pipeline, camera logic, and state flow.This eliminates duplicated controllers and allows seamless runtime role switching without breaking behavior consistency.------------------------------------------------------------Unlike traditional setups, Bridge Engine is built as a systemic gameplay framework, not a collection of isolated features.------------------------------------------------------------CORE NAVIGATION SYSTEM (NO NAVMESH / NO GRID)------------------------------------------------------------Bridge Engine features a fully custom navigation system designed specifically for open-world scenarios.• Automatic waypoint discovery via tag-based scanning• Automatic waypoint connection (no manual linking required)• Distance-based connection filtering• Obstacle-aware line-of-sight validation• Dynamic adjacency graph generationThe system also supports:• Runtime path recalculation• Dynamic obstacle detection and avoidance• Repath cooldown and performance throttling• Obstacle memory caching• Batched graph rebuild systemThis creates a scalable navigation solution for large and dynamic worlds.------------------------------------------------------------BRIDGE ENGINE CORE (CENTRAL AI SYSTEM)------------------------------------------------------------Bridge Engine acts as a central orchestration layer connecting:• Character locomotion• Navigation system• Vehicle interaction• Squad/group behaviorBehavior dynamically adapts based on:• Player state (on-foot / vehicle)• Target changes• Environment changes• Group size------------------------------------------------------------DYNAMIC SLOT SYSTEM (GROUP FORMATION AI)------------------------------------------------------------• Automatic slot assignment• Dynamic slot recalculation• Collision-aware spacing• Smooth transitions (no snapping)• Slot occupancy trackingContext-based behavior:• Wide formations (vehicle mode)• Tight formations (follow mode)• Auto reset on state change------------------------------------------------------------VEHICLE INTERACTION SYSTEM------------------------------------------------------------• Real-time vehicle entry & exit• Smart vehicle detection• Door & seat targeting• Multi-agent support• Smooth state transitions------------------------------------------------------------ADVANCED SEAT MANAGER SYSTEM------------------------------------------------------------• Seat reservation system• Door conflict prevention• Dynamic seat validation• Separate seat & door states------------------------------------------------------------ADVANCED CHARACTER MOTOR------------------------------------------------------------• Unified player & AI movement• Intent-based behavior• Social avoidance system• Optimized physics queries------------------------------------------------------------BUILT-IN CAMERA SYSTEM------------------------------------------------------------• Player ↔ Vehicle switching• Smooth transitions• Dynamic zoom• Collision-aware positioning------------------------------------------------------------VEHICLE IK SYSTEM------------------------------------------------------------• Hand IK (steering)• Foot grounding• Driver/passenger logic• Smooth blending(Requires Unity Animation Rigging)------------------------------------------------------------EDITOR WAYPOINT TOOL------------------------------------------------------------• One-click waypoint creation• Automatic network generation• Easy editing workflow------------------------------------------------------------PERFECT FOR------------------------------------------------------------• Open-world games• Sandbox simulations• Open-world gameplay systems• Companion & squad AI• Vehicle-based systems• Systemic AI frameworksIdeal for developers building large-scale AI-driven worlds.------------------------------------------------------------IMPORTANT NOTES------------------------------------------------------------• Animation Rigging required for IK• No NavMesh / No Grid system• Demo models are placeholders• Focus is on systems, not visualsSupport & ContactOfficial Website: gmtechstudios.comOnline Documentation: Quick Start & Technical Guide (Preview)Support Email: bridgeengine@hotmail.comCore Architecture------------------------------------------------------------NPC = Player Unified AgentSeamlessly share the exact same logic between players and AI agents.Runtime Role SwitchingInstantly switch control between NPC and Player without duplicating logic or controllers.------------------------------------------------------------Vehicle & Squad InteractionDynamic Vehicle SystemSmooth and realistic real-time vehicle entry and exit.Advanced Seat ManagerIncludes a 3-stage validation system:• Empty seat validation• Seat reservation system• Door conflict preventionGroup IntelligenceSupports squad and group-based vehicle interaction.Smart AssignmentSlot-based seat assignment with integrated leader-follower logic.------------------------------------------------------------Custom NavigationNo NavMesh / No GridFully independent and performance-focused navigation system.Custom A* PathfindingBuilt from the ground up for large-scale open-world environments.Runtime Obstacle AvoidanceDynamic path recalculation based on moving objects and environment changes.------------------------------------------------------------Built-in Camera SystemNo Cinemachine RequiredLightweight standalone camera system included.Dual ModesThird-person on-foot and vehicle camera support.Smooth TransitionsSeamless switching between walking and driving states.------------------------------------------------------------Animation & IK System(Requires Unity Animation Rigging package)Vehicle IK IntegrationLightweight IK system for realistic interaction.Driver DetailsHands aligned to steering wheel, with proper foot grounding.Passenger RealismNatural hand placement for non-driving characters.------------------------------------------------------------Developer & Editor ToolsEditor Waypoint ToolFull in-scene editing (move, select, delete).Fast SetupQuick waypoint placement with optional linking.Seamless WorkflowAuto-setup support for faster iteration.Ready to UseModular and extensible system with included demo scene.AI USAGE DISCLOSUREAI tools were used as a supportive aid during development.Their usage was limited to:• Technical research and concept exploration• Assistance with problem-solving• Improving documentation clarity and languageAll core systems, gameplay logic, and final implementations were fully designed,developed, and validated manually by the developer.No auto-generated or unverified code is included. The framework is structured,tested, and built to ensure originality, stability, and performance.




