TextLabel: Full look, attach and options, in the game's units

[Kheartz]

TextLabel could only set text, colour, font size, a distance and one of three style presets. Games that want name or role tags over players (FiveM's DrawText3D, for example) need more than that. This PR gives the server-side label a full look, makes labels follow entities, and lets a game state distances in its own units.

Scripting

• TextLabel.create(x, y, z, text, options) and label.update(options) take a TextLabelOptions object (documented in the catalog). Its keys:

  • text, markup, position, attachTo, offset
  • fontSize, sizeMode ("screen" / "world"), minSize, maxSize
  • color, opacity, style, outline, shadow, background
  • align, anchor, lineSpacing, maxWidth
  • drawDistance, fadeDistance, occlusion, virtualWorld

  Colours can be numbers, "#RRGGBB[AA]" strings or Colors. An unknown key or a bad value throws a TypeError and changes nothing. create validates its options before it checks for replication.

• label.getOptions() returns the current look in the shape update() takes.

• label.attachTo(entity | id, offset?) and label.detach(). An attached label streams to every player in its virtual world, and the game decides the reference point (a player's head, say).

• Markup, when markup: true: {#RRGGBB[AA]}, {#}, {b}{/b}, {i}{/i}, and {{ for a literal brace.

Compatibility

• The positional create(x, y, z, text, fontSize, drawDistance, virtualWorld) and every setter and property still work.
• setStyle applies the preset's look. The style field now holds the preset nearest the current look, so renderers that only draw presets (M2O's, for one) keep working unchanged.
• The new fields come after the existing ones in SerializeFields. This is still a wire change, so the nightly bump should go to MAJOR.

Units and streaming

• TextLabel::SetUnitsPerMetre(n) (default 1) lets a game whose world units aren't metres scale the 30 m default draw distance and the 1000 m cap. Hogwarts Legacy uses centimetres and sets 100.
• streaming.range follows the draw distance, so with SetInterestUsesEntityRange a label streams exactly as far as it draws.

Client

• external/imgui/widgets/world_text_markup.h: the markup parser and a UTF-8 decoder.
• external/imgui/widgets/world_text_layout.h:
  • LayoutWorldText handles runs, bold/italic fonts, wrapping, alignment and line spacing, and lays out at a baked size.
  • DrawWorldTextLaidOut draws the background plate, shadow (offset and blur), outline, glyphs and anchor at any draw size.
• integrations/client/ui/text_label_imgui.h: maps a TextLabelEntity to the widgets' look, alignment and runs.
• Projection, occlusion and attach resolution stay in the game, which knows its camera and bodies. TextLabelEntity::revision lets a renderer keep its layout until the label changes.

Tests

• New modules: text_label (wire round trip, presets, nearest preset), world_text (markup, UTF-8) and world_text_layout (Windows).
• A new js_features case covers option validation.
• FrameworkTests: 679/679.
• Also exercised in Hogwarts MP with an in-game suite (11/11): layout, world size, streaming, fade, occlusion, attach. A mod PR bumps its Framework pin once this lands.

Summary by CodeRabbit

• New Features
  • Added configurable world-space text labels with markup, color and style options, alignment, sizing, backgrounds, outlines, shadows, and entity attachment.
  • Added an options-based API for creating and updating labels, while retaining positional creation.
  • Added text wrapping and layout controls, including anchors, line spacing, and maximum width.
  • Added configurable draw distance, opacity, and occlusion settings.
• Tests
  • Added coverage for label settings, serialization, markup parsing, UTF-8 handling, and text layout.

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Reviewing files that changed from the base of the PR and between b3b544b and 55ae977.

📒 Files selected for processing: 11

• code/framework/src/external/imgui/widgets/world_text.h
• code/framework/src/external/imgui/widgets/world_text_layout.h
• code/framework/src/external/imgui/widgets/world_text_markup.h
• code/framework/src/integrations/client/ui/text_label_imgui.h
• code/framework/src/integrations/server/instance.cpp
• code/framework/src/networking/replication/entities/text_label_entity.h
• code/framework/src/scripting/builtins/text_label.cpp
• code/framework/src/scripting/builtins/text_label.h
• code/tests/modules/js_features_ut.h
• code/tests/modules/text_label_ut.h
• code/tests/modules/world_text_ut.h

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Walkthrough

The change adds replicated text-label appearance and layout settings, a scripting options API, and ImGui utilities for parsing, laying out, and drawing styled world text. Tests cover label serialization, scripting options, markup parsing, UTF-8 decoding, and text layout.

Changes

Text Labels and Rendering

Layer / File(s)	Summary
Replicated label data and styles code/framework/src/networking/replication/entities/text_label_entity.h, code/tests/modules/text_label_ut.h	TextLabelEntity adds appearance and layout fields to serialization, construction, and deserialization. Style helpers apply presets and infer the nearest preset. Tests cover serialization, preset values, and selection precedence.
TextLabel scripting options code/framework/src/scripting/builtins/text_label.h, code/framework/src/scripting/builtins/text_label.cpp, code/tests/modules/js_features_ut.h	The scripting API adds validated options for creating and updating labels, attachment methods, and options retrieval. It also updates text, font-size, and draw-distance limits. Tests assert errors for invalid options and exercise creation calls.
World-text parsing, layout, and drawing code/framework/src/external/imgui/widgets/world_text_markup.h, code/framework/src/external/imgui/widgets/world_text_layout.h, code/framework/src/integrations/client/ui/text_label_imgui.h, code/tests/modules/world_text_ut.h, code/tests/modules/world_text_layout_ut.h, code/tests/framework_ut.cpp, code/tests/CMakeLists.txt	The ImGui utilities parse markup and UTF-8, lay out and draw styled text, and map replicated label settings to drawing options. Tests cover parsing and layout; the framework test runner registers the new modules.

Priority: ➖ Normal

Estimated code review effort: 4 (Complex) | ~45 minutes

Change: Feature

Suggested reviewers: segfaultd

Merge Risk: ⚪ Minimal · up to 55ae9

No issue requiring a change before merge was established. The PR is mergeable after normal checks.

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Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 27.06% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 85 functions across 13 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

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Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly summarizes the main changes: full styling, entity attachment, options-based APIs, and game-unit scaling.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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Inline comments:
Review comments at
@code/framework/src/external/imgui/widgets/world_text_markup.h:
- Around line 41-57: Update ParseHexColor to reject tags whose first character
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Reviewing files that changed from the base of the PR and between 4cf5bb9 and b3b544b.

📒 Files selected for processing: 12

• code/framework/src/external/imgui/widgets/world_text_layout.h
• code/framework/src/external/imgui/widgets/world_text_markup.h
• code/framework/src/integrations/client/ui/text_label_imgui.h
• code/framework/src/networking/replication/entities/text_label_entity.h
• code/framework/src/scripting/builtins/text_label.cpp
• code/framework/src/scripting/builtins/text_label.h
• code/tests/CMakeLists.txt
• code/tests/framework_ut.cpp
• code/tests/modules/js_features_ut.h
• code/tests/modules/text_label_ut.h
• code/tests/modules/world_text_layout_ut.h
• code/tests/modules/world_text_ut.h

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[Segfaultd]

Must fix

1. JS_Update resolves label before ParseOptions. Option getters/Proxies run script code; a label.destroy() there leaves ApplyOptions writing through a dangling pointer. Parse first, resolve after.
2. SetDrawDistance now writes streaming.range. In games that don't opt labels into SetInterestUsesEntityRange, that feeds _maxEntityRange, and interest_grid.cpp:241 queries max(viewerRange, _maxEntityRange) for every viewer. One 1000 m label (100k units in Hogwarts) blows up every viewer's query radius.

Design

3. AttachTo accepts any id: no existence, self or virtual-world check, and nothing clears attachNetworkId/alwaysVisible when the target dies. That lifecycle belongs in the Framework.
4. alwaysVisible on attach drops range culling entirely; N name tags go to every player in the world. Syncing the label's position to the target server-side would keep the grid working.
5. Detach() unconditionally clears alwaysVisible, clobbering a value the game may have set.

Perf (client)

6. Blur shadow + thick outline is ~66 passes over every glyph (x2 for faux bold), each re-doing FindGlyph. Resolve glyphs once per draw. At scale this can exceed 16-bit index limits without RendererHasVtxOffset.
7. PushTexture(spans.front().font->OwnerAtlas->TexRef) assumes all fonts share one atlas. Assert it or push per span.

Cleanup

8. kMaxOutlineWidth/kMaxShadowBlur duplicate the widget constants; put them in text_label_entity.h and use from both sides.
9. No check that minSize <= maxSize.
10. New using declarations in text_label.cpp and text_label_imgui.h; use fully qualified names. Drop the class X: public formatting churn.
11. Mark the old preset-only DrawWorldText deprecated.

[Kheartz]

Thanks, all eleven addressed.

Must fix

1. update() parses first and looks the label up afterwards. A getter that destroys it now makes the update a no-op. Covered in js_features.
2. The server instance puts TextLabel on its own range (SetInterestUsesEntityRange) at startup. Labels sit in their own grid, searched only as far as the longest label range, and no longer feed _maxEntityRange.

Design
3. attachTo takes only another live entity: an unknown id or the label itself throws a TypeError (C++ AttachTo returns false). Before each interest rebuild, TextLabel::FollowTargets runs from Instance::Update. It destroys a label whose target is gone, so a name tag can't outlive its player.
4. No more alwaysVisible. That same pass sets an attached label's server-side position (and virtual world) to its target's, so the grid and draw distance apply as usual. Peers are still sent the label's own position (ownPosition, which SerializeFields/SerializeTransform write while attached), so a moving target doesn't resend the label every tick. They draw at the target anyway. Detaching restores the label's own position and world.
5. Gone with 4.

Perf
6. DrawWorldTextLaidOut looks every glyph up once per draw into quads, and the outline and shadow passes only re-emit those. The stock DX9/11/12 backends set RendererHasVtxOffset, so large meshes split past 64k vertices.
7. Spans switch textures when their font's atlas changes, instead of assuming the first span's.

Cleanup
8. kTextLabelMaxOutlineWidth/kTextLabelMaxShadowBlur live in text_label_entity.h. The builtin validates against them and the client helper clamps to them. The widget can't include networking headers, so it keeps its own caps, with a static_assert in text_label_imgui.h tying the two together.
9. minSize > maxSize (when maxSize > 0) throws, checked against the label's current values when update() sets only one.
10. The using declarations are replaced by fully qualified names, and both class X : public lines are back to upstream.
11. DrawWorldText is [[deprecated]]. Hogwarts MP's two remaining callers move to the layout API in its pin-bump PR.

Tests: FrameworkTests 685/685. New cases cover attaching (self, unknown target, follow, detach, world), destruction with the target, attached-label streaming through the interest grid, the own-position wire for an attached label, and the size and target checks. In Hogwarts MP, the in-game textlabel suite passes 11/11 on these commits. It now also checks that a detached label 200 m away streams out, and that a label is destroyed with its target.

Fixed in 745a1e5 (widgets) and 55ae977 (TextLabel).