Saltmire Trail adds fading afterimage "ghosts" behind any sprite in a single call — the classic motion-trail effect that sells speed and weight for dashes, dodges, projectiles and fast enemies.

Trail.attach(player)        # continuous trail while it moves
Trail.dash(player, 8)       # a quick burst behind a dash / dodge
Trail.detach(player)        # stop — existing ghosts fade out
Trail.clear()               # kill every live ghost now

Works with Sprite2D, AnimatedSprite2D and TextureRect — it copies the current frame, flip, rotation and scale automatically.

Features

• Drop-in autoload — enable the plugin and the Trail singleton is ready.
• Tune globally via Trail.cfg or per call: color, interval, lifetime, min distance, shrink.
• Pooled, self-cleaning ghosts — no leaks; freed sprites drop out of tracking.
• No dependencies, one small file, MIT.

Part of the Saltmire game-feel family (Juice · Transitions · FX · Trail). Playable demo and full source: https://saltmire.itch.io/saltmire-trail

Built with AI assistance, reviewed and tested by hand in Godot 4.6. No AI art or audio.