purchase buffs menu works

Assets/_Project/Prefabs/Player/Player.prefab

@@ -48,7 +48,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: d5a57f767e5e46a458fc5d3c628d0cbb, type: 3}
   m_Name: 
   m_EditorClassIdentifier: Unity.Netcode.Runtime::Unity.Netcode.NetworkObject
-  GlobalObjectIdHash: 121878297
+  GlobalObjectIdHash: 1552073510
   InScenePlacedSourceGlobalObjectIdHash: 0
   DeferredDespawnTick: 0
   Ownership: 1
@@ -116,5 +116,4 @@ MonoBehaviour:
   m_EditorClassIdentifier: Assembly-CSharp::TD.Gameplay.PlayerBuffManager
   ShowTopMostFoldoutHeaderGroup: 1
   categories:
-  - {fileID: 0}
+  - {fileID: 11400000, guid: d8ed3b9535538f7fc82be878cc307d26, type: 2}
-  - {fileID: 0}

Assets/_Project/Scripts/Gameplay/BuilderInputController.cs

@@ -149,6 +149,14 @@ namespace TD.Gameplay
             // Right-click. Suppressed entirely during a modal mode (placement/paint
             // controllers handle right-click as cancel there) and when over HUD.
             if (isModal) return;
+
+            // B: toggle buff menu.
+            if (keyboard != null && keyboard.bKey.wasPressedThisFrame
+                && !HUDController.IsTextInputActive)
+            {
+                HUDController.Instance?.ToggleBuffMenu();
+            }
+            
             if (pointerOverHud) return;
             if (!mouse.rightButton.wasPressedThisFrame) return;
 

Assets/_Project/Scripts/Gameplay/PlayerBuffManager.cs

@@ -1,4 +1,5 @@
 // Assets/_Project/Scripts/Gameplay/PlayerBuffManager.cs
+using System.Collections.Generic;
 using Unity.Collections;
 using Unity.Netcode;
 using UnityEngine;
@@ -27,6 +28,31 @@ namespace TD.Gameplay
     /// </remarks>
     public class PlayerBuffManager : NetworkBehaviour
     {
+        // ----- Static registry (mirrors PlayerGoldManager pattern) -----------
+
+        private static readonly Dictionary<ulong, PlayerBuffManager> s_byClientId
+            = new Dictionary<ulong, PlayerBuffManager>();
+
+        /// <summary>Returns the PlayerBuffManager owned by the given client, or null.</summary>
+        public static PlayerBuffManager GetForClient(ulong clientId)
+        {
+            s_byClientId.TryGetValue(clientId, out var mgr);
+            return mgr;
+        }
+
+        /// <summary>Convenience: the local client's own buff manager.</summary>
+        public static PlayerBuffManager Local
+        {
+            get
+            {
+                var nm = NetworkManager.Singleton;
+                if (nm == null) return null;
+                return GetForClient(nm.LocalClientId);
+            }
+        }
+
+        // ----- Inspector ------------------------------------------------------
+
         [Tooltip("Purchasable buff categories shown in the buff menu. Index in this " +
                  "array is the categoryIndex passed to RequestPurchaseBuffRpc.")]
         [SerializeField] private BuffCategory[] categories;
@@ -38,6 +64,19 @@ namespace TD.Gameplay
             buffs = new NetworkList<ActiveBuff>();
         }
 
+        // ----- NGO lifecycle ----------------------------------------------
+
+        public override void OnNetworkSpawn()
+        {
+            s_byClientId[OwnerClientId] = this;
+        }
+
+        public override void OnNetworkDespawn()
+        {
+            if (s_byClientId.TryGetValue(OwnerClientId, out var registered) && registered == this)
+                s_byClientId.Remove(OwnerClientId);
+        }
+
         // ----- Public API -------------------------------------------------
 
         /// <summary>

Assets/_Project/Scripts/UI/HUDController.cs

@@ -21,6 +21,8 @@ namespace TD.UI
     [RequireComponent(typeof(UIDocument))]
     public class HUDController : MonoBehaviour
     {
+        public static HUDController Instance { get; private set; }
+
         // ----- Inspector --------------------------------------------------
 
         [Header("Scene References")]
@@ -93,6 +95,10 @@ namespace TD.UI
 
         // Match-end overlay — built once on Start and toggled on Phase changes.
         private VisualElement matchEndOverlay;
+
+        // Buff menu overlay — toggled by the B key via ToggleBuffMenu().
+        private VisualElement buffMenuOverlay;
+        private VisualElement buffMenuContent;
         private Label         matchEndTitle;
 
         // Chat panel (bottom-left, above portrait) — programmatic. The container
@@ -309,6 +315,9 @@ namespace TD.UI
             // MatchState.OnPhaseChanged fires Victory or Defeat.
             BuildMatchEndOverlay(root);
 
+            // Build the buff menu overlay. Hidden until the player presses B.
+            BuildBuffMenuOverlay(root);
+
             // Chat feed + input. Anchored bottom-left, just above the portrait/bottom-ui bar.
             // Player typing toggled with Enter; system messages (e.g. life lost) post via
             // ChatService.PostLocalSystem on every peer.
@@ -323,6 +332,11 @@ namespace TD.UI
             uiInitialized = true;
         }
 
+        private void Awake()
+        {
+            Instance = this;
+        }
+
         private void OnEnable()
         {
             TowerPlacementController.OnRejectionMessageReady += ShowRejectionMessage;
@@ -437,6 +451,8 @@ namespace TD.UI
 
         private void OnDestroy()
         {
+            if (Instance == this) Instance = null;
+
             minimapView?.Dispose();
             minimapView = null;
 
@@ -1208,6 +1224,149 @@ namespace TD.UI
 
         // ----- Chat feed + input -----------------------------------------
 
+        // ----- Buff menu overlay ------------------------------------------
+
+        private void BuildBuffMenuOverlay(VisualElement root)
+        {
+            buffMenuOverlay = new VisualElement();
+            buffMenuOverlay.style.position        = Position.Absolute;
+            buffMenuOverlay.style.left            = 0;
+            buffMenuOverlay.style.right           = 0;
+            buffMenuOverlay.style.top             = 0;
+            buffMenuOverlay.style.bottom          = 0;
+            buffMenuOverlay.style.alignItems      = Align.Center;
+            buffMenuOverlay.style.justifyContent  = Justify.Center;
+            buffMenuOverlay.style.backgroundColor = new Color(0f, 0f, 0f, 0.5f);
+            buffMenuOverlay.style.display         = DisplayStyle.None;
+            buffMenuOverlay.pickingMode           = PickingMode.Position;
+
+            var panel = new VisualElement();
+            panel.style.minWidth        = 340;
+            panel.style.paddingTop      = 20;
+            panel.style.paddingBottom   = 20;
+            panel.style.paddingLeft     = 28;
+            panel.style.paddingRight    = 28;
+            panel.style.backgroundColor = new Color(0.08f, 0.08f, 0.10f, 0.95f);
+            panel.style.borderTopWidth  = panel.style.borderBottomWidth =
+                panel.style.borderLeftWidth = panel.style.borderRightWidth = 2;
+            var border = new Color(0.4f, 0.4f, 0.45f);
+            panel.style.borderTopColor  = panel.style.borderBottomColor =
+                panel.style.borderLeftColor = panel.style.borderRightColor = border;
+
+            var title = new Label("Buffs");
+            title.style.fontSize    = 24;
+            title.style.color       = Color.white;
+            title.style.unityFontStyleAndWeight = FontStyle.Bold;
+            title.style.marginBottom = 12;
+            panel.Add(title);
+
+            // Scrollable content area: current buffs + purchase buttons.
+            // Rebuilt each time the menu is shown via RefreshBuffMenuContent().
+            buffMenuContent = new VisualElement();
+            panel.Add(buffMenuContent);
+
+            var closeBtn = new Button(() => SetBuffMenuVisible(false)) { text = "Close  [B]" };
+            closeBtn.style.marginTop = 16;
+            closeBtn.style.height    = 32;
+            panel.Add(closeBtn);
+
+            buffMenuOverlay.Add(panel);
+            root.Add(buffMenuOverlay);
+        }
+
+        /// <summary>
+        /// Toggles the buff menu overlay. Called by <see cref="TD.Gameplay.BuilderInputController"/>
+        /// when the player presses B.
+        /// </summary>
+        public void ToggleBuffMenu()
+        {
+            bool nowVisible = buffMenuOverlay?.style.display == DisplayStyle.None;
+            SetBuffMenuVisible(nowVisible);
+        }
+
+        private void SetBuffMenuVisible(bool visible)
+        {
+            if (buffMenuOverlay == null) return;
+            buffMenuOverlay.style.display = visible ? DisplayStyle.Flex : DisplayStyle.None;
+            if (visible) RefreshBuffMenuContent();
+        }
+
+        private void RefreshBuffMenuContent()
+        {
+            if (buffMenuContent == null) return;
+            buffMenuContent.Clear();
+
+            var buffManager = TD.Gameplay.PlayerBuffManager.Local;
+
+            // Current buffs section.
+            var buffsHeader = new Label("Active Buffs");
+            buffsHeader.style.color      = new Color(0.7f, 0.9f, 0.7f);
+            buffsHeader.style.fontSize   = 14;
+            buffsHeader.style.marginBottom = 4;
+            buffMenuContent.Add(buffsHeader);
+
+            if (buffManager == null || buffManager.Buffs.Count == 0)
+            {
+                var none = new Label("None");
+                none.style.color       = new Color(0.55f, 0.55f, 0.55f);
+                none.style.marginBottom = 8;
+                buffMenuContent.Add(none);
+            }
+            else
+            {
+                for (int i = 0; i < buffManager.Buffs.Count; i++)
+                {
+                    var buff = buffManager.Buffs[i];
+                    string statName = buff.Stat == TD.Core.BuffStat.Damage ? "Damage" : "Attack Speed";
+                    string activeTag = buff.IsActive ? "" : " [DISABLED]";
+                    var row = new Label($"• {buff.DisplayName}  ({statName} ×{buff.Multiplier:F2}){activeTag}");
+                    row.style.color      = buff.IsActive ? Color.white : new Color(0.5f, 0.5f, 0.5f);
+                    row.style.fontSize   = 13;
+                    buffMenuContent.Add(row);
+                }
+                buffMenuContent.style.marginBottom = 12;
+            }
+
+            // Purchase buttons section.
+            var buyHeader = new Label("Purchase");
+            buyHeader.style.color        = new Color(0.9f, 0.8f, 0.5f);
+            buyHeader.style.fontSize     = 14;
+            buyHeader.style.marginTop    = 8;
+            buyHeader.style.marginBottom = 4;
+            buffMenuContent.Add(buyHeader);
+
+            int categoryCount = buffManager?.CategoryCount ?? 0;
+            if (categoryCount == 0)
+            {
+                var none = new Label("No categories available.");
+                none.style.color = new Color(0.55f, 0.55f, 0.55f);
+                buffMenuContent.Add(none);
+                return;
+            }
+
+            int localGold = TD.Gameplay.PlayerGoldManager.Local?.CurrentGold ?? 0;
+            for (int i = 0; i < categoryCount; i++)
+            {
+                var category = buffManager.GetCategory(i);
+                if (category == null) continue;
+
+                int idx = i; // capture for lambda
+                var btn = new Button(() =>
+                {
+                    TD.Gameplay.PlayerBuffManager.Local?.RequestPurchaseBuffRpc(idx);
+                    RefreshBuffMenuContent();
+                })
+                {
+                    text = $"{category.DisplayName}  —  {category.Cost}g"
+                };
+                btn.style.height     = 34;
+                btn.style.fontSize   = 13;
+                btn.style.marginBottom = 4;
+                btn.SetEnabled(localGold >= category.Cost);
+                buffMenuContent.Add(btn);
+            }
+        }
+
         // Bottom-left chat panel. Anchored 12px from the left edge, with the
         // bottom edge sitting above the 220px bottom-ui. Layout uses a flex
         // column: scrollable feed on top, input below. The feed clips at

Packages/manifest.json

@@ -12,11 +12,12 @@
     "com.unity.netcode.gameobjects": "2.11.0",
     "com.unity.probuilder": "6.0.9",
     "com.unity.render-pipelines.universal": "17.4.0",
-    "com.unity.sdk.linux-x86_64": "1.0.2",
+    "com.unity.sdk.linux-x86_64": "1.1.0",
     "com.unity.services.multiplayer": "2.1.3",
     "com.unity.terrain-tools": "5.3.2",
     "com.unity.test-framework": "1.6.0",
     "com.unity.timeline": "1.8.12",
+    "com.unity.toolchain.linux-x86_64-linux": "1.1.0",
     "com.unity.toolchain.win-x86_64-linux": "1.0.2",
     "com.unity.ugui": "2.0.0",
     "com.unity.visualscripting": "1.9.11",

Packages/packages-lock.json

@@ -221,11 +221,11 @@
       "url": "https://packages.unity.com"
     },
     "com.unity.sdk.linux-x86_64": {
-      "version": "1.0.2",
+      "version": "1.1.0",
       "depth": 0,
       "source": "registry",
       "dependencies": {
-        "com.unity.sysroot.base": "1.0.2"
+        "com.unity.sysroot.base": "1.1.0"
       },
       "url": "https://packages.unity.com"
     },
@@ -355,7 +355,7 @@
       "url": "https://packages.unity.com"
     },
     "com.unity.sysroot.base": {
-      "version": "1.0.2",
+      "version": "1.1.0",
       "depth": 1,
       "source": "registry",
       "dependencies": {},
@@ -403,6 +403,15 @@
       },
       "url": "https://packages.unity.com"
     },
+    "com.unity.toolchain.linux-x86_64-linux": {
+      "version": "1.1.0",
+      "depth": 0,
+      "source": "registry",
+      "dependencies": {
+        "com.unity.sysroot.base": "1.1.0"
+      },
+      "url": "https://packages.unity.com"
+    },
     "com.unity.toolchain.win-x86_64-linux": {
       "version": "1.0.2",
       "depth": 0,