Скачать или смотреть 🔧 Devlog #11 – GASP 5.5 + ALS Integration: Fixing Pistol Mesh Separation, Collision Traces & Holster

This live-stream is a deep dive into troubleshooting and refining the code. We begin by diagnosing why the pistol’s skeletal mesh detaches from its actor when physics simulation is enabled, then walk step-by-step through the full fix, ending with a clean, reusable holster and equip/unequip workflow.

What you will learn
Root-cause analysis – identifying actor vs. skeletal-mesh location drift using Draw Debug Point.
Reliable attachment – stopping separation with Attach Component to Component and optimal hierarchy setup.
Collision & trace tuning – creating a query-only Box Component so weapon pickup traces work without physical interference.
State validation – preventing “weapon not detected” errors by updating boolean flow for Can Pick Up, Has Pistol In Hand, and Is Playing Montage.
Holster socket creation – adding a right-thigh socket, scaling the pistol preview, and naming conventions for multi-weapon projects.
Equip / unequip montages – reversing montage play-rate, trimming sections, and blending per bone for upper-body-only animation.
Layered animation architecture – organising the Anim Graph with Motion-Matching cache, an Equip state machine, and clean Animation Layer assets.
Performance touches – removing unnecessary Tick calls and keeping Blueprint graphs readable for future expansion.

Key takeaways
A single Attach solves most “floating mesh” issues—no per-frame fixes required.
Query-only collision boxes keep physics stable while remaining trace-detectable.
Isolating equip logic in its own state machine keeps complex ALS/GAS projects maintainable.

📁 Resources & links
Download all the project files from all the livestreams:   / 131031166  
GASP 5.5 (Clean Base): https://www.fab.com/listings/880e319a...
Advanced Locomotion System v4 Project: https://www.fab.com/listings/ef9651a4...
Caleb Longmire’s original ALS devstream:    • UE4 - DEV STREAM - What am I doing...  
Polygon Hive’s GASP + ALS demo for reference:    • GASP ALS Replicated & Updated to UE 5.5 - ...  
Weapon System Project Files:   / 118730714  

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Full playlist:   • GASP 5.5 + ALS Integration Livestream  

📌 Unreal Engine Version used: UE5.5

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🎬Chapters
00:00 Intro & Stream Agenda
01:07 Showing the pistol mesh–actor separation bug
04:46 Using DrawDebugPoint to visualise drift
07:00 First “Attach Node” attempt & root-component warning
08:58 Why a root component can’t attach in-actor
11:00 Adding a Box component for collision-query only
14:45 Testing weapon trace detection with the Box
17:05 Fixing Box follow via AttachComponentToComponent
20:30 Pickup → drop loop verification (no more drift)
23:10 Hunting the “disappearing Box” mystery location
26:40 Final recap of the separation-fix blueprint
29:00 Planning the holster socket & right-thigh choice
32:00 Quick Sketchfab tip for free holster meshes
34:05 Creating the Thigh_R socket & naming convention
36:15 Scaling and preview-placing the pistol mesh
40:00 Writing Q-key logic for equip / unequip states
43:30 Montage vs. AnimGraph—choosing our approach
47:20 Building the Equip/Unequip state machine
50:50 Reversing the montage play-rate for holster action
55:30 Fine-tuning blend times & inertialization settings
1:00:20 Cleaning up LayerBlendPerBone weights
1:04:45 Troubleshooting shoulder distortion & curve checks
1:08:30 Refactoring into an Animation Layer for clarity
1:10:50 Wrap-up, course plans & next-step roadmap