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I rebuilt my physics placement tool Grabbit from scratch. Feedback on the result much appreciated!

r/gamedev · 2026-07-05 · status reviewed · open original ↗
Game development · 0.85

Summary · qwen2.5:32b

Grabbit 2 is a ground-up rebuild of a physics-based prop placement tool for Unity, designed to simplify realistic object positioning in edit mode; it includes twenty new operations across five modes and integrates with the scene toolbar. The update addresses compatibility with newer Unity versions and user-reported issues from the first version. Notably, Grabbit 2 allows baking generated colliders permanently onto prefabs, enabling runtime use as native colliders or convex meshes.

Excerpt

<!-- SC_OFF --><div class="md"><p>This is Grabbit 2, a ground-up rebuild of the tool I've been working on since 2021.<br /> The core idea is to make transform tools that collide properly for realistic prop placement in edit mode without any setup or anything added to game objects. </p> <p><a href="https://www.youtube.com/watch?v=kFyTxSJU9nE">https://www.youtube.com/watch?v=kFyTxSJU9nE</a></p> <p>A rebuild was needed to fit the newer version of Unity and the new Scene tools, and so I rebuilt it almost entirely to also fix some of the common issues that people reported on the first version.</p> <p>New in 2: around twenty new operations across five modes (including new Create and Select modes), baking the generated colliders permanently onto prefabs as native colliders or convex meshes so you can use them at runtime, full hotkey support and native scene toolbar integration, and MCP support so AI assistants can place and scatter things with physics-accurate results.</p> <p>Happy to answer anything about editor-time physics! It made me go down the rabbit hole for many years, I think I know a thing or two about it now :D </p> <p>I'm mostly interested here to know your thoughts on what I could add or the kind of tools that feel important in that kind of physical transform context.</p> <p>If you've tried Grabbit one in the past, I'm also interested to know what you were missing in it!</p> </div><!-- SC_ON --> &#32; submitted by &#32; <a href="https://www.reddit.com/user/BillSansky"> /u/BillSansky </a> <br /> <span><a href="https://www.reddit.com/r/gamedev/comments/1uogqqy/i_rebuilt_my_physics_placement_tool_grabbit_from/">[link]</a></span> &#32; <span><a href="https://www.reddit.com/r/gamedev/comments/1uogqqy/i_rebuilt_my_physics_placement_tool_grabbit_from/">[comments]</a></span>
Queues it; drafting in your voice happens locally on the 4090.

Draft a post in your voice

Runs locally on SAC-DSK-003 / qwen2.5:32b. Needs an active voice profile.