KaijuEngine/kaiju

[EDITOR] Camera snaps when rotating in 3D

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#790 opened on May 10, 2026

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Description

On any project, in the 3D editor view, when rotating the camera using right-click, the camera snaps in the direction of the cursor away from the center

To Reproduce

  1. Open any project
  2. Enter 3D View
  3. Right click the main window whilst currently moving the mouse
  • Note: This only occurs when actively moving the mouse. If you right-click, and then move your mouse, it functions as expected.

Likely cause Since the snap is proportional to the cursor's distance and direction from the screen center, the issue is likely that the engine believes you moved the cursor that far in the first frame.

A simple solution (if this is the case), is to simply ignore the first frame of rotation, letting the cursor first snap to the center.

Platform OS: Linux Mint Kaiju Version: Nightly (10th May 2026) - Windows Version (ran through Wine)

https://streamable.com/jba0sb

Contributor guide

Research direction
Inspect the camera rotation logic in the 3D editor's input handling. Look for the first frame mouse position offset after right click and implement a skip for the initial delta.
Tech stack
go
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Git
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75