8c64ad2eeb
Adds the backend-agnostic UI contract layer called for by the 2026-04-24
staged UI strategy (docs/plans/2026-04-24-ui-framework.md). This is the
stable layer both the Phase D.2a Hexa.NET.ImGui backend and the later
D.2b custom retail-look backend implement.
New module `src/AcDream.UI.Abstractions/`:
* IPanel — a drawable panel (id/title/visible/Render)
* IPanelHost — owns the panel list, drives per-frame dispatch
* IPanelRenderer — drawing primitives (Begin/End/Text/SameLine/
Separator/ProgressBar). Kept small + retail-friendly
on purpose — if a widget can't be expressed with
dat-sourced sprites+fonts later, don't add it here.
* ICommandBus — user-intent publisher; NullCommandBus is D.2a default
* PanelContext — per-frame record struct (DeltaSeconds + Commands)
* Panels/Vitals/
VitalsVM — reads CombatState.GetHealthPercent for the local
player. Stamina/Mana return null in D.2a; they await
a LocalPlayerState cache of PlayerDescription (0x0013)
which is filed as a follow-up issue.
VitalsPanel — first real panel. HP bar always drawn; Stam/Mana
appear automatically when the VM returns non-null.
Invariant documented in IPanel's XML doc: no `using Hexa.NET.ImGui` in
panel files, ever. If a widget needs something IPanelRenderer can't
express, the interface grows; panels never reach through.
References AcDream.Core for CombatState. Zero runtime/UI dependencies
— this project compiles headless, perfect for unit testing the
ViewModels.
No visible change yet. Next commits: (2) tests, (3) ImGui backend,
(4) GameWindow hookup + visible panel behind ACDREAM_DEVTOOLS=1.
15 lines
561 B
C#
15 lines
561 B
C#
namespace AcDream.UI.Abstractions;
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/// <summary>
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/// Per-frame context passed to each <see cref="IPanel.Render"/> call.
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/// Struct + record for zero-allocation per frame. Add fields here as new
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/// capabilities become panel-facing — e.g. a future <c>IGameState</c>
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/// handle once we need richer data than individual ViewModels can carry.
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///
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/// <para>
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/// Carried by value; cheap. Passed per-render; do not cache across frames.
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/// </para>
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/// </summary>
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public readonly record struct PanelContext(
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float DeltaSeconds,
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ICommandBus Commands);
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