UITK HUD rework + build palette (click-to-place ghost)

Rebuild the in-game HUD on UI Toolkit (HudUi/HudSystem, Aether palette) consistent with the menu; build-palette bar (BuildPaletteState) drives cursor->cell ground-ghost preview (green/red via BuildPreviewMath), left-click place / right-click cancel / rotate; fire suppressed in build mode; combat juice restyle. +4 BuildPreviewMath EditMode tests. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-06 15:05:49 -07:00
parent f31ffe910b
commit a4edf7a03b
13 changed files with 579 additions and 219 deletions
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+using Unity.Mathematics;
+
+namespace ProjectM.Simulation
+{
+    /// <summary>
+    /// Pure validity check for the client build-placement PREVIEW (the ground-ghost colour) — the same legality
+    /// the server re-validates authoritatively in BuildPlaceSystem, computed client-side so the ghost can read
+    /// green (valid) vs red (why-not). No managed types / RNG / wall-clock → unit-testable. The caller supplies
+    /// the live occupancy result + the affordability inputs (it owns the structure scan + the ledger read).
+    /// </summary>
+    public static class BuildPreviewMath
+    {
+        public const byte Valid = 0;
+        public const byte OutOfPlot = 1;
+        public const byte Occupied = 2;
+        public const byte Unaffordable = 3;
+
+        /// <summary>
+        /// Evaluate placement at <paramref name="cell"/>: must be in-plot, unoccupied, and affordable.
+        /// <paramref name="occupied"/> = the caller's live-structure cell check; <paramref name="have"/>/<paramref name="cost"/>
+        /// the resource on hand vs the catalog cost. Returns the first failing reason, else <see cref="Valid"/>.
+        /// </summary>
+        public static byte Evaluate(in BaseAnchor anchor, int2 cell, bool occupied, int have, int cost)
+        {
+            if (!BaseGridMath.IsCellInPlot(anchor, cell)) return OutOfPlot;
+            if (occupied) return Occupied;
+            if (have < cost) return Unaffordable;
+            return Valid;
+        }
+    }
+}
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+fileFormatVersion: 2
+guid: 4deb41f803f65bd4b946354e4a2adcf2