Ladder Climber Blueprint System for Unreal Engine

A blueprint-based solution for implementing ladder climbing mechanics in UE projects.

Showcase Video

This video showcases the ​LadderClimber System​ integrated with Unreal Engine's ​GameAnimationSample (GAS)​. The system provides ladder-specific animations and logic that ​seamlessly transitions​ with MotionMatching-driven locomotion states.

​Note:​​

• The LadderClimber package ​does not include GAS​ implementations.

• GAS integration ​requires custom setup​ on your project.

System Overview

This system provides ​20+ ladder animations​ with optimized animation curves and precise state transition timing, ensuring smooth climbing interactions. It seamlessly integrates with Unreal Engine's ​GameAnimationSample​ workflows and supports ​network replication​ for multiplayer synchronization. Built using ​Animation Layer Interfaces, it preserves existing animation logic while adding ladder functionality without conflicts.

The ​BP_LadderDetector​ component automatically detects climbable ladder meshes or allows manual customization of ladder dimensions. A demo map (Maps/LadderClimberDemoMap) is included to demonstrate core features and provide step-by-step integration guidance, with detailed annotations in blueprint assets.

Key Features

• ​20+ Ladder Animations​ - Diverse climbing motions with optimized animation curves and frame-accurate state transitions.

• ​GameAnimationSample Compatibility - ​Smooth transitions between standard locomotion animations and ladder-specific actions.

• ​Multiplayer Support​ - Network-replicated climbing logic for synchronized behavior in multiplayer environments.

• ​BP_LadderClimber Component - ​Handles core climbing mechanics and can be easily integrated into existing character blueprints.

• ​BP_LadderDetector​ - Automatically detects ladder meshes or allows manual setup for non-detectable assets.

• ​Animation Layer Integration - ​Implements climbing logic via ALI_LadderClimber without modifying existing AnimBP graphs.

• ​Plug-and-Play Setup​ - Add components and connect interfaces to embed functionality with minimal setup.

• ​Demo Map​ - Pre-built example map (Maps/LadderClimberDemoMap) showcasing implementation best practices.

Implementation Steps

1. ​Add Components to Character​

   • Attach BP_LadderClimber to your character blueprint.

   • Implement the ALI_LadderClimber interface in your AnimBP.

2. ​Setup Ladder Detection​

   • Place BP_LadderDetector actors in your level.

   • Adjust detector position/scale to cover target ladder meshes (auto-detection) or manually define dimensions.

3. ​Verify Functionality​

   • Test transitions between locomotion and climbing states.

   • Review blueprint comments and demo map for advanced configuration.

Required Plugin:​​

• Unreal Engine's ​Motion Warping Plugin​ must be enabled in your project.(Edit > Plugins > Animation > Motion Warping)

Support

• For bug reports or feature requests, please open an issue on GitHub Support Repository.