ludic/docs/language/phases/phase-lateupdate.md
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docs(api): per-symbol pages, fuzzy search, deep token linking, hover cards
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Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-08-29 17:53:22 +03:00

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Markdown

---
id: phase-lateupdate
name: LateUpdate
category: phases
kind: phase
tokens: LateUpdate
sig: phase LateUpdate
tip: Runs each frame after Update and before Render.
order: 4
---
<code>LateUpdate</code> runs once per frame, after every <code>Update</code> handler has finished and just before <code>Render</code>. Use it for logic that must observe the <b>settled</b> result of this frame's updates: following the camera to the player's new position, resolving queued despawns, or any end-of-step cleanup that would be wrong to do while other <code>Update</code> handlers are still moving models. The full per-frame order the engine runs is <code>Input</code> → <code>FixedUpdate</code> → <code>Update</code> → <code>LateUpdate</code> → <code>Render</code>, with <code>Start</code> running once at boot before any of them.
```ludic
program FollowCamera {
property Position { column: int = 0, row: int = 0 }
model Player { Position }
var camera_column: int = 0
handler SpawnPlayer phase Start {
spawn Player { Position { column: 12, row: 0 } }
}
@Queries(these: [Position])
handler MovePlayer phase Update {
Position.column = Position.column + 1
}
# runs after MovePlayer, so the camera sees the final position
@Queries(these: [Position])
handler TrackPlayer phase LateUpdate {
camera_column = Position.column
}
}
```