(Feat) Add Remove Building

Assets/GAME/Script/Building/BuildManager.cs

@@ -62,6 +62,13 @@ namespace Ashwild.Building
         [Tooltip("Layers that block a build (structures, props, players). Must NOT include the ground.")]
         [SerializeField] private LayerMask obstructionMask;
 
+        [Header("Demolition")]
+        [Tooltip("Layers the demolition aim can hit to target a committed structure. Narrow this to the structures' layer so walls, roofs, etc. are the only demolishable hits.")]
+        [SerializeField] private LayerMask buildMask = ~0;
+
+        [Tooltip("Overlay material added on top of the aimed build while it is the demolition target (e.g. a translucent red 'about to break' pass). Should be a transparent/additive material since it draws over the model.")]
+        [SerializeField] private Material demolitionMaterial;
+
         #endregion
 
         #region State
@@ -95,10 +102,16 @@ namespace Ashwild.Building
         private float yaw;
 
         /// <summary>
-        /// The local player's aim transform (camera), resolved when the ghost is attached.
+        /// The local player's aim transform (camera), resolved lazily and shared by placement and
+        /// demolition.
         /// </summary>
         private Transform aim;
 
+        /// <summary>
+        /// The committed build currently under the demolition aim, or null when none is targeted.
+        /// </summary>
+        private BuiltStructure demoTarget;
+
         /// <summary>
         /// Frame the ghost was attached, so a click landing that frame never confirms instantly.
         /// </summary>
@@ -141,6 +154,8 @@ namespace Ashwild.Building
             PlayerEvents.AttackPressed += HandleConfirm;
             PlayerEvents.SecondaryUsePressed += HandleCancel;
             PlayerEvents.HotbarScroll += HandleRotate;
+            PlayerEvents.BuildRotatePressed += HandleRotateKey;
+            PlayerEvents.DemolishModeChanged += HandleDemolishModeChanged;
         }
 
         /// <summary>
@@ -152,16 +167,27 @@ namespace Ashwild.Building
             PlayerEvents.AttackPressed -= HandleConfirm;
             PlayerEvents.SecondaryUsePressed -= HandleCancel;
             PlayerEvents.HotbarScroll -= HandleRotate;
+            PlayerEvents.BuildRotatePressed -= HandleRotateKey;
+            PlayerEvents.DemolishModeChanged -= HandleDemolishModeChanged;
 
             EndPlacement();
+            ClearDemoTarget();
         }
 
         /// <summary>
-        /// Drives the owned ghost along the aim each frame; frozen while input is locked (e.g. the
-        /// menu was reopened over an active placement).
+        /// Each frame, in exactly one mode: in demolition mode it tracks which build the player aims
+        /// at; otherwise it drives the owned ghost along the aim. Both are frozen while input is locked
+        /// (e.g. the menu reopened over a placement), and leaving demolition mode clears the target.
         /// </summary>
         private void Update()
         {
+            if (PlayerEvents.IsDemolishing && !PlayerEvents.InputLocked)
+            {
+                UpdateDemolitionTarget();
+                return;
+            }
+            ClearDemoTarget();
+
             if (ghost == null) return;
             if (PlayerEvents.InputLocked) return;
 
@@ -268,9 +294,7 @@ namespace Ashwild.Building
             ghost = go;
             ghostValidity = go.GetComponentInChildren<BuildGhost>(true);
             ghostSnaps = go.GetComponentsInChildren<BuildSnapPoint>(true);
-            aim = aimCamera != null ? aimCamera.transform : (Camera.main != null ? Camera.main.transform : null);
-            if (aim == null)
-                Debug.LogError("[BuildManager] Pas de caméra d'aim (Camera.main introuvable — la caméra du joueur est-elle taguée MainCamera ?).", this);
+            ResolveAim();
 
             placementBeganFrame = Time.frameCount;
             UpdateGhostPose();
@@ -278,11 +302,18 @@ namespace Ashwild.Building
         }
 
         /// <summary>
-        /// Left-click: commits the ghost's pose to the registry (spawned for everyone) and ends the
-        /// placement. Blocked on an invalid spot and on the very frame the ghost was attached.
+        /// Left-click: demolishes the aimed build while in demolition mode, otherwise commits the
+        /// ghost's pose to the registry (spawned for everyone) and ends the placement. Placement is
+        /// blocked on an invalid spot and on the very frame the ghost was attached.
         /// </summary>
         private void HandleConfirm()
         {
+            if (PlayerEvents.IsDemolishing)
+            {
+                TryDemolish();
+                return;
+            }
+
             if (ghost == null) return;
             if (PlayerEvents.InputLocked) return;
             if (Time.frameCount == placementBeganFrame) return;
@@ -316,6 +347,18 @@ namespace Ashwild.Building
             else if (scroll < 0f) yaw -= rotationStep;
         }
 
+        /// <summary>
+        /// R key: yaws the ghost by one rotation step in the same direction as a scroll-up, so the
+        /// build can be turned without the mouse wheel. Ignored when no ghost is being placed.
+        /// </summary>
+        private void HandleRotateKey()
+        {
+            if (ghost == null) return;
+            if (PlayerEvents.InputLocked) return;
+
+            yaw += rotationStep;
+        }
+
         /// <summary>
         /// Poses the ghost each frame: quantise the aim hit to the grid with the current yaw, then
         /// let a nearby matching socket pull it into an exact connection (sockets win over the grid).
@@ -410,6 +453,76 @@ namespace Ashwild.Building
             }
         }
 
+        /// <summary>
+        /// Resolves and caches the local player's aim transform — the assigned camera, else the
+        /// runtime Camera.main (the FPS camera). Logs once when neither is found.
+        /// </summary>
+        private Transform ResolveAim()
+        {
+            if (aim != null) return aim;
+
+            aim = aimCamera != null ? aimCamera.transform : (Camera.main != null ? Camera.main.transform : null);
+            if (aim == null)
+                Debug.LogError("[BuildManager] Pas de caméra d'aim (Camera.main introuvable — la caméra du joueur est-elle taguée MainCamera ?).", this);
+            return aim;
+        }
+
+        #endregion
+
+        #region Demolition
+
+        /// <summary>
+        /// Leaving demolition mode drops any current target so the crosshair returns to normal; entering
+        /// it needs nothing here — Update starts tracking on the next frame.
+        /// </summary>
+        private void HandleDemolishModeChanged(bool on)
+        {
+            if (!on) ClearDemoTarget();
+        }
+
+        /// <summary>
+        /// Casts the aim ray for a committed build and moves the demolition highlight when the target
+        /// changes: the previous build removes its overlay and the new one gets the demolition material
+        /// added on top, so exactly the aimed build reads as "about to break".
+        /// </summary>
+        private void UpdateDemolitionTarget()
+        {
+            Transform a = ResolveAim();
+            if (a == null) { ClearDemoTarget(); return; }
+
+            BuiltStructure hit = null;
+            if (Physics.Raycast(a.position, a.forward, out RaycastHit info, placeRange, buildMask, QueryTriggerInteraction.Ignore))
+                hit = info.collider.GetComponentInParent<BuiltStructure>();
+
+            if (hit == demoTarget) return;
+
+            if (demoTarget != null) demoTarget.ClearHighlight();
+            demoTarget = hit;
+            if (demoTarget != null) demoTarget.Highlight(demolitionMaterial);
+        }
+
+        /// <summary>
+        /// Left-click while demolishing: asks the registry to remove the aimed build for everyone. The
+        /// target stays until the next frame re-evaluates, so a miss simply retargets.
+        /// </summary>
+        private void TryDemolish()
+        {
+            if (demoTarget == null) return;
+            if (BuildRegistry.Instance != null)
+                BuildRegistry.Instance.RequestDemolish(demoTarget.gameObject);
+        }
+
+        /// <summary>
+        /// Drops the current demolition target, restoring its authored materials. Safe to call when
+        /// nothing is targeted.
+        /// </summary>
+        private void ClearDemoTarget()
+        {
+            if (demoTarget == null) return;
+            demoTarget.ClearHighlight();
+            demoTarget = null;
+        }
+
         #endregion
     }
 }

Assets/GAME/Script/Building/BuildRegistry.cs

@@ -99,6 +99,43 @@ namespace Ashwild.Building
 
         #endregion
 
+        #region Demolish Build
+
+        /// <summary>
+        /// Called by BuildManager when the local player demolishes a build they aimed at: resolves the
+        /// hit instance to its index in the replicated list and asks the server to remove it. The index
+        /// is a valid shared key because <see cref="spawned"/> stays aligned with <see cref="builds"/>
+        /// on every machine. No-op when the object is not one of our committed builds.
+        /// </summary>
+        public void RequestDemolish(GameObject builtInstance)
+        {
+            if (builtInstance == null) return;
+
+            int index = spawned.IndexOf(builtInstance);
+            if (index < 0)
+            {
+                Debug.LogWarning($"[BuildRegistry] '{builtInstance.name}' is not a committed build — nothing to demolish.", this);
+                return;
+            }
+            RequestDemolishServerRpc(index);
+        }
+
+        /// <summary>
+        /// Server-side: removes the record at this index, which replicates the removal (and the local
+        /// teardown + occupancy refresh) to every client. Range-guarded against a stale index from a
+        /// build that another player demolished during the round-trip.
+        /// </summary>
+        [ServerRpc(RequireOwnership = false)]
+        private void RequestDemolishServerRpc(int index, NetworkConnection conn = null)
+        {
+            if (index < 0 || index >= builds.Count) return;
+
+            // TODO: refund the builder's resources (conn → PlayerInventory) once build cost lands.
+            builds.RemoveAt(index);
+        }
+
+        #endregion
+
         #region Networked Ghost Preview
 
         /// <summary>
@@ -187,6 +224,7 @@ namespace Ashwild.Building
                 case SyncListOperation.RemoveAt:
                     DestroyAt(index);
                     spawned.RemoveAt(index);
+                    RecomputeOccupancy();
                     break;
 
                 case SyncListOperation.Clear:
@@ -210,7 +248,10 @@ namespace Ashwild.Building
                 Debug.LogWarning($"[BuildRegistry] Buildable id {record.buildableId} introuvable ou sans BuiltPrefab — rien de spawné.", this);
                 return null;
             }
-            return Instantiate(data.BuiltPrefab, record.position, record.rotation);
+
+            GameObject go = Instantiate(data.BuiltPrefab, record.position, record.rotation);
+            if (go.GetComponent<BuiltStructure>() == null) go.AddComponent<BuiltStructure>();
+            return go;
         }
 
         /// <summary>
@@ -246,6 +287,24 @@ namespace Ashwild.Building
                 MarkOccupancy(go);
         }
 
+        /// <summary>
+        /// Recomputes occupancy from scratch after a removal: clears every socket, then re-marks the
+        /// connected pairs across what remains. Without this a demolished piece would leave its former
+        /// neighbours' sockets stuck "occupied", so nothing could ever be snapped back into the gap.
+        /// </summary>
+        private void RecomputeOccupancy()
+        {
+            foreach (GameObject go in spawned)
+            {
+                if (go == null) continue;
+                foreach (BuildSnapPoint sp in go.GetComponentsInChildren<BuildSnapPoint>(true))
+                    sp.SetOccupied(false);
+            }
+
+            foreach (GameObject go in spawned)
+                MarkOccupancy(go);
+        }
+
         /// <summary>
         /// Marks the sockets a piece shares a position with — and the matching sockets on the pieces
         /// it touches — as occupied, so placement snapping skips them. Occupancy is derived purely

Assets/GAME/Script/Building/BuiltStructure.cs

@@ -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
+    }
+}

Assets/GAME/Script/Building/BuiltStructure.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: fe38331f524a7db4cb3d53381b9ea244

Assets/GAME/Script/Player/Events/PlayerEvents.cs

@@ -25,6 +25,8 @@ namespace Ashwild.Player
         public static bool IsBuildMenuOpen { get; private set; }
         // True while a build ghost is being positioned in the world (menu closed, no structure placed yet).
         public static bool IsPlacingBuild { get; private set; }
+        // True while the build hammer is in demolition mode (right-click held, menu closed, not placing).
+        public static bool IsDemolishing { get; private set; }
         public static bool IsPaused { get; private set; }
 
         // True when a networked session is live (host or client).
@@ -52,11 +54,13 @@ namespace Ashwild.Player
         public static event Action CrouchPressed;
         public static event Action AttackPressed;
         public static event Action SecondaryUsePressed;         // right-click / secondary use (build menu, aim, block, ...)
+        public static event Action<bool> SecondaryUseHeld;      // right-click pressed (true) / released (false) — for tap-vs-hold gestures
         public static event Action InteractPressed;
         public static event Action DropPressed;
         public static event Action InventoryTogglePressed;
         public static event Action<int> HotbarSlotPressed;
         public static event Action<float> HotbarScroll;
+        public static event Action BuildRotatePressed;          // rotate the build ghost one step (R key) while placing
         public static event Action CancelPressed;               // UI "Cancel" (Escape) — back / pause / close
 
         // ============================================================
@@ -128,6 +132,7 @@ namespace Ashwild.Player
         public static event Action BuildMenuToggleRequested;    // the build hammer asks to open/close the construction menu
         public static event Action<bool> BuildMenuOpenChanged;  // the construction menu opened (true) or closed (false)
         public static event Action<bool> BuildPlacingChanged;   // a build ghost started (true) / stopped (false) being positioned
+        public static event Action<bool> DemolishModeChanged;   // the hammer entered (true) / left (false) demolition mode (right-click held)
 
         // ============================================================
         // Cooking events
@@ -182,11 +187,13 @@ namespace Ashwild.Player
         public static void RaiseCrouchPressed() { Log(nameof(CrouchPressed)); CrouchPressed?.Invoke(); }
         public static void RaiseAttackPressed() { Log(nameof(AttackPressed)); AttackPressed?.Invoke(); }
         public static void RaiseSecondaryUsePressed() { Log(nameof(SecondaryUsePressed)); SecondaryUsePressed?.Invoke(); }
+        public static void RaiseSecondaryUseHeld(bool held) { Log(nameof(SecondaryUseHeld)); SecondaryUseHeld?.Invoke(held); }
         public static void RaiseInteractPressed() { Log(nameof(InteractPressed)); InteractPressed?.Invoke(); }
         public static void RaiseDropPressed() { Log(nameof(DropPressed)); DropPressed?.Invoke(); }
         public static void RaiseInventoryTogglePressed() { Log(nameof(InventoryTogglePressed)); InventoryTogglePressed?.Invoke(); }
         public static void RaiseHotbarSlotPressed(int i) { Log(nameof(HotbarSlotPressed)); HotbarSlotPressed?.Invoke(i); }
         public static void RaiseHotbarScroll(float f) { HotbarScroll?.Invoke(f); }
+        public static void RaiseBuildRotatePressed() { Log(nameof(BuildRotatePressed)); BuildRotatePressed?.Invoke(); }
         public static void RaiseCancelPressed() { Log(nameof(CancelPressed)); CancelPressed?.Invoke(); }
 
         public static void RaiseGroundedChanged(bool grounded, float impactSpeed)
@@ -294,6 +301,17 @@ namespace Ashwild.Player
             BuildPlacingChanged?.Invoke(placing);
         }
 
+        /// <summary>
+        /// Toggles demolition mode (right-click held with the hammer out). Owner-side only; the
+        /// hammer raises it and BuildManager drives the world-facing targeting/destroy from it.
+        /// </summary>
+        public static void RaiseDemolishModeChanged(bool on)
+        {
+            IsDemolishing = on;
+            Log(nameof(DemolishModeChanged));
+            DemolishModeChanged?.Invoke(on);
+        }
+
         public static void RaiseFoodPlacedToCook(ItemData raw) { Log(nameof(FoodPlacedToCook)); FoodPlacedToCook?.Invoke(raw); }
         public static void RaiseFoodCookedReady(ItemData cooked) { Log(nameof(FoodCookedReady)); FoodCookedReady?.Invoke(cooked); }
         public static void RaiseFuelAdded(ItemData fuel) { Log(nameof(FuelAdded)); FuelAdded?.Invoke(fuel); }
@@ -376,6 +394,7 @@ namespace Ashwild.Player
             IsChestOpen = false;
             IsBuildMenuOpen = false;
             IsPlacingBuild = false;
+            IsDemolishing = false;
             IsPaused = false;
             HoveredInteractable = null;
         }

Assets/GAME/Script/Player/HeldItems/BuildHammerBehaviour.cs

@@ -4,21 +4,28 @@ using Ashwild.Inventory;
 namespace Ashwild.Player
 {
     /// <summary>
-    /// Held-item logic for the build hammer, placed on its hand prefab. While equipped it
-    /// listens to the secondary-use input (right-click) and asks the construction UI to
-    /// open/close through the bus — it never reaches for the menu itself, so the hammer
-    /// stays a pure input source and the UI owns its own state. Left-click placement will
-    /// be added on top of this once the build menu exists.
+    /// Held-item logic for the build hammer, placed on its hand prefab. It turns the single
+    /// right-click into two gestures without any extra keybind: a quick <b>tap</b> opens/closes the
+    /// construction menu through the bus, while <b>holding</b> right-click past a short threshold puts
+    /// the hammer into demolition mode for as long as it is held (releasing leaves it). The hammer
+    /// stays a pure input source — it only raises bus requests; BuildManager owns the menu and the
+    /// world-facing targeting/destroy, so this never reaches for either.
     /// </summary>
     [DisallowMultipleComponent]
     public class BuildHammerBehaviour : MonoBehaviour, IHeldItemBehaviour
     {
         #region Serialized Fields
 
-        [Header("Cooldown")]
+        [Header("Gestures")]
         /// <summary>
-        /// Minimum time, in seconds, between two menu toggles so a held right-click
-        /// does not flicker the menu open and shut.
+        /// How long, in seconds, right-click must stay held before it counts as a demolition hold
+        /// instead of a menu tap. A release before this opens/closes the menu.
+        /// </summary>
+        [SerializeField] private float holdThreshold = 0.2f;
+
+        /// <summary>
+        /// Minimum time, in seconds, between two menu toggles so a burst of taps does not flicker the
+        /// menu open and shut.
         /// </summary>
         [SerializeField] private float toggleCooldown = 0.25f;
 
@@ -31,24 +38,58 @@ namespace Ashwild.Player
         /// </summary>
         private float nextToggleTime;
 
+        /// <summary>
+        /// True between an accepted press and its release. A press ignored at the gate (input locked
+        /// or already placing) never sets this, so its release is ignored too.
+        /// </summary>
+        private bool secondaryDown;
+
+        /// <summary>
+        /// Time, in seconds, the current accepted press began — measured against <see cref="holdThreshold"/>.
+        /// </summary>
+        private float secondaryDownTime;
+
+        /// <summary>
+        /// True while the hold has crossed into demolition mode, so the release ends the mode rather
+        /// than toggling the menu.
+        /// </summary>
+        private bool demoActive;
+
         #endregion
 
         #region Unity Lifecycle
 
         /// <summary>
-        /// Subscribes to the secondary-use input for as long as the hammer is held.
+        /// Subscribes to the right-click hold stream for as long as the hammer is held.
         /// </summary>
         private void OnEnable()
         {
-            PlayerEvents.SecondaryUsePressed += HandleSecondaryUse;
+            PlayerEvents.SecondaryUseHeld += HandleSecondaryUse;
         }
 
         /// <summary>
-        /// Unsubscribes when the hammer is put away (the prefab is destroyed).
+        /// Unsubscribes and leaves demolition mode cleanly when the hammer is put away (its prefab is
+        /// destroyed mid-hold), so the mode never sticks on with no hammer to release it.
         /// </summary>
         private void OnDisable()
         {
-            PlayerEvents.SecondaryUsePressed -= HandleSecondaryUse;
+            PlayerEvents.SecondaryUseHeld -= HandleSecondaryUse;
+            if (demoActive) ExitDemolition();
+            secondaryDown = false;
+        }
+
+        /// <summary>
+        /// Promotes a sustained press into demolition mode once it outlasts the tap threshold. Held
+        /// out of Update (not a timer) so the mode drops instantly if input locks or a placement
+        /// begins mid-hold.
+        /// </summary>
+        private void Update()
+        {
+            if (!secondaryDown || demoActive) return;
+            if (PlayerEvents.InputLocked || PlayerEvents.IsPlacingBuild) return;
+            if (Time.time - secondaryDownTime < holdThreshold) return;
+
+            EnterDemolition();
         }
 
         #endregion
@@ -56,8 +97,8 @@ namespace Ashwild.Player
         #region IHeldItemBehaviour
 
         /// <summary>
-        /// Nothing to link yet: toggling the menu needs no player refs. Present to satisfy
-        /// the held-item contract; placement logic added later will use the context.
+        /// Nothing to link: the hammer only raises bus requests. Present to satisfy the held-item
+        /// contract; BuildManager holds the player/world refs the build UX needs.
         /// </summary>
         public void Setup(HeldItemContext context, ItemData item)
         {
@@ -68,20 +109,60 @@ namespace Ashwild.Player
         #region Event Handlers
 
         /// <summary>
-        /// Requests the construction menu to open/close on right-click, gated by lock and
-        /// cooldown. While a ghost is being positioned, right-click cancels the placement instead
-        /// (handled by the placement controller), so the menu is left alone here.
+        /// The single right-click gesture, split by press and release: a press is tracked (unless
+        /// input is locked or a ghost is being placed, where right-click means "cancel" and is left to
+        /// BuildManager); its release either ends demolition mode (if the hold engaged it) or, for a
+        /// quick tap, toggles the construction menu under the cooldown.
         /// </summary>
-        private void HandleSecondaryUse()
+        private void HandleSecondaryUse(bool held)
         {
-            if (PlayerEvents.InputLocked) return;
-            if (PlayerEvents.IsPlacingBuild) return;
-            if (Time.time < nextToggleTime) return;
+            if (held)
+            {
+                if (PlayerEvents.InputLocked || PlayerEvents.IsPlacingBuild) return;
+                secondaryDown = true;
+                secondaryDownTime = Time.time;
+                return;
+            }
 
+            if (!secondaryDown) return;
+            secondaryDown = false;
+
+            if (demoActive) ExitDemolition();
+            else ToggleMenu();
+        }
+
+        #endregion
+
+        #region Internal Helpers
+
+        /// <summary>
+        /// Requests the construction menu to open/close, gated by the toggle cooldown.
+        /// </summary>
+        private void ToggleMenu()
+        {
+            if (Time.time < nextToggleTime) return;
             nextToggleTime = Time.time + toggleCooldown;
             PlayerEvents.RaiseBuildMenuToggleRequested();
         }
 
+        /// <summary>
+        /// Enters demolition mode and announces it on the bus.
+        /// </summary>
+        private void EnterDemolition()
+        {
+            demoActive = true;
+            PlayerEvents.RaiseDemolishModeChanged(true);
+        }
+
+        /// <summary>
+        /// Leaves demolition mode and announces it on the bus.
+        /// </summary>
+        private void ExitDemolition()
+        {
+            demoActive = false;
+            PlayerEvents.RaiseDemolishModeChanged(false);
+        }
+
         #endregion
     }
 }

Assets/GAME/Script/Player/Input/InputManager.cs

@@ -200,10 +200,12 @@ namespace Ashwild.Player
             WireButton(playerMap, "Crouch", PlayerEvents.RaiseCrouchPressed);
             WireButton(playerMap, "Attack", PlayerEvents.RaiseAttackPressed);
             WireButton(playerMap, "SecondaryUse", PlayerEvents.RaiseSecondaryUsePressed);
+            WireHold(playerMap, "SecondaryUse", PlayerEvents.RaiseSecondaryUseHeld);
             WireButton(playerMap, "Interact", PlayerEvents.RaiseInteractPressed);
             WireButton(playerMap, "Drop", PlayerEvents.RaiseDropPressed);
             WireButton(playerMap, "Inventory", PlayerEvents.RaiseInventoryTogglePressed);
             WireScrollY(playerMap, "HotbarScroll", PlayerEvents.RaiseHotbarScroll);
+            WireButton(playerMap, "BuildRotate", PlayerEvents.RaiseBuildRotatePressed);
 
             for (int i = 0; i < 10; i++)
             {