(Feat) Add Remove Building

2026-07-09 21:38:14 +02:00
parent 24b15d23a3
commit f5de33eac2
13 changed files with 520 additions and 242 deletions
@@ -0,0 +1,91 @@
+using UnityEngine;
+
+namespace Ashwild.Building
+{
+    /// <summary>
+    /// Runtime marker added to every committed structure instance the BuildRegistry spawns, so the
+    /// demolition aim can recognise a build from a raycast hit (GetComponentInParent) and hand its
+    /// root back to the registry to remove. It also owns the demolition highlight: while it is the
+    /// hammer's target the demolition material is added on top of every renderer (an extra overlay
+    /// pass, like the ghost), and removed again when the aim leaves — so the player sees exactly which
+    /// build will break. Pure local visual + a pure tag: nothing about it ever crosses the wire.
+    /// </summary>
+    [DisallowMultipleComponent]
+    public class BuiltStructure : MonoBehaviour
+    {
+        #region State
+
+        /// <summary>
+        /// Every child renderer, cached so the highlight can swap and restore their materials.
+        /// </summary>
+        private Renderer[] renderers;
+
+        /// <summary>
+        /// Each renderer's original materials, kept so the swap is fully reversible.
+        /// </summary>
+        private Material[][] baseMaterials;
+
+        /// <summary>
+        /// Whether the demolition material is currently applied, so swaps stay idempotent.
+        /// </summary>
+        private bool highlighted;
+
+        #endregion
+
+        #region Unity Lifecycle
+
+        /// <summary>
+        /// Caches every child renderer and its authored materials up front so highlighting is a cheap
+        /// array assignment with no per-frame allocation of the base look.
+        /// </summary>
+        private void Awake()
+        {
+            renderers = GetComponentsInChildren<Renderer>(true);
+            baseMaterials = new Material[renderers.Length][];
+            for (int i = 0; i < renderers.Length; i++)
+                baseMaterials[i] = renderers[i] != null ? renderers[i].sharedMaterials : new Material[0];
+        }
+
+        #endregion
+
+        #region Public API
+
+        /// <summary>
+        /// Adds the demolition material on top of each renderer's authored materials (an extra draw
+        /// pass), marking this build as the hammer's current target without hiding the model. Mirrors
+        /// the ghost overlay. No-op when already highlighted or no material was provided.
+        /// </summary>
+        public void Highlight(Material demolitionMaterial)
+        {
+            if (highlighted || demolitionMaterial == null) return;
+            highlighted = true;
+
+            for (int i = 0; i < renderers.Length; i++)
+            {
+                Renderer r = renderers[i];
+                if (r == null) continue;
+
+                Material[] baseMats = baseMaterials[i];
+                Material[] combined = new Material[baseMats.Length + 1];
+                for (int j = 0; j < baseMats.Length; j++) combined[j] = baseMats[j];
+                combined[baseMats.Length] = demolitionMaterial;
+
+                r.materials = combined;
+            }
+        }
+
+        /// <summary>
+        /// Restores each renderer's authored materials. No-op when not highlighted.
+        /// </summary>
+        public void ClearHighlight()
+        {
+            if (!highlighted) return;
+            highlighted = false;
+
+            for (int i = 0; i < renderers.Length; i++)
+                if (renderers[i] != null) renderers[i].materials = baseMaterials[i];
+        }
+
+        #endregion
+    }
+}