diff --git a/assets/locales/koKR/game.json b/assets/locales/koKR/game.json
index fb603a837..54feec9b0 100644
--- a/assets/locales/koKR/game.json
+++ b/assets/locales/koKR/game.json
@@ -13,5 +13,5 @@
   "GAME_INVENTORY_BLOCKS" : "블록",
   "GAME_INVENTORY_WALLS" : "벽지",
   "CONTEXT_ITEM_EQUIPMENT_PLURAL" : "장비",
-  "GAME_INVENTORY_FAVORITES" : "중요"
+  "GAME_INVENTORY_FAVORITES" : "등록"
 }
\ No newline at end of file
diff --git a/lib/kotlin-reflect.jar b/lib/kotlin-reflect.jar
index a25e7b3ef..896a39362 100755
Binary files a/lib/kotlin-reflect.jar and b/lib/kotlin-reflect.jar differ
diff --git a/lib/kotlin-runtime-sources.jar b/lib/kotlin-runtime-sources.jar
index d96e8c065..31c6f0997 100755
Binary files a/lib/kotlin-runtime-sources.jar and b/lib/kotlin-runtime-sources.jar differ
diff --git a/lib/kotlin-runtime.jar b/lib/kotlin-runtime.jar
index b58cc6993..0ec4ec7b3 100755
Binary files a/lib/kotlin-runtime.jar and b/lib/kotlin-runtime.jar differ
diff --git a/src/net/torvald/terrarum/StateControllerRumbleTest.kt b/src/net/torvald/terrarum/StateControllerRumbleTest.kt
new file mode 100644
index 000000000..e05decb58
--- /dev/null
+++ b/src/net/torvald/terrarum/StateControllerRumbleTest.kt
@@ -0,0 +1,55 @@
+package net.torvald.terrarum
+
+import net.torvald.terrarum.gamecontroller.Key
+import net.torvald.terrarum.gamecontroller.KeyToggler
+import net.torvald.terrarum.gameworld.fmod
+import org.newdawn.slick.Color
+import org.newdawn.slick.GameContainer
+import org.newdawn.slick.Graphics
+import org.newdawn.slick.state.BasicGameState
+import org.newdawn.slick.state.StateBasedGame
+
+/**
+ * Created by SKYHi14 on 2017-03-15.
+ */
+class StateControllerRumbleTest : BasicGameState() {
+    override fun init(container: GameContainer?, game: StateBasedGame?) {
+    }
+
+    override fun update(container: GameContainer, game: StateBasedGame, delta: Int) {
+        Terrarum.appgc.setTitle("${GAME_NAME} — Do not pull out the controller!")
+
+        KeyToggler.update(container.input)
+
+        if (Terrarum.controller != null) {
+            for (i in 0..minOf(rumblerCount - 1, 9)) {
+                Terrarum.controller!!.setRumblerStrength(i, if (KeyToggler.isOn(2 + i)) 1f else 0f)
+            }
+        }
+    }
+
+    private var rumblerCount = Terrarum.controller?.rumblerCount ?: 0
+
+    override fun getID() = Terrarum.STATE_ID_TOOL_RUMBLE_DIAGNOSIS
+
+    override fun render(gc: GameContainer, game: StateBasedGame, g: Graphics) {
+        g.font = Terrarum.fontGame
+        g.color = Color.white
+
+        if (Terrarum.controller != null) {
+            g.drawString("Controller: ${Terrarum.controller!!.name}", 10f, 10f)
+            g.drawString("Rumbler count: ${rumblerCount}", 10f, 30f)
+            g.drawString("Rumblers", 10f, 70f)
+            for (i in 0..minOf(rumblerCount - 1, 9)) {
+                g.color = if (KeyToggler.isOn(2 + i)) Color(0x55ff55) else Color(0x808080)
+                //g.drawString("$i", 10f + i * 16f, 90f)
+
+                g.drawString("$i — ${Terrarum.controller!!.getRumblerName(i)}", 10f, 90f + 20 * i)
+            }
+        }
+        else {
+            g.drawString("Controller not found.", 10f, 10f)
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/src/net/torvald/terrarum/StateUITest.kt b/src/net/torvald/terrarum/StateUITest.kt
index 0599647ca..bd1800d79 100644
--- a/src/net/torvald/terrarum/StateUITest.kt
+++ b/src/net/torvald/terrarum/StateUITest.kt
@@ -1,16 +1,14 @@
 package net.torvald.terrarum
 
 import net.torvald.terrarum.gameactors.ActorInventory
+import net.torvald.terrarum.gameactors.InventoryPair
 import net.torvald.terrarum.gameitem.InventoryItem
 import net.torvald.terrarum.mapdrawer.MapCamera
 import net.torvald.terrarum.ui.UICanvas
 import net.torvald.terrarum.ui.UIHandler
 import net.torvald.terrarum.ui.UIItemTextButton
 import net.torvald.terrarum.ui.UIItemTextButtonList
-import org.newdawn.slick.Color
-import org.newdawn.slick.GameContainer
-import org.newdawn.slick.Graphics
-import org.newdawn.slick.Input
+import org.newdawn.slick.*
 import org.newdawn.slick.state.BasicGameState
 import org.newdawn.slick.state.StateBasedGame
 
@@ -19,11 +17,13 @@ import org.newdawn.slick.state.StateBasedGame
  */
 class StateUITest : BasicGameState() {
 
-    val ui = UIHandler(SimpleUI())
+    val ui: UIHandler
 
     val inventory = ActorInventory()
 
     init {
+        ui = UIHandler(SimpleUI(inventory))
+
         ui.posX = 50
         ui.posY = 30
         ui.isVisible = true
@@ -31,13 +31,18 @@ class StateUITest : BasicGameState() {
 
         inventory.add(object : InventoryItem() {
             override val id: Int = 5656
+            override var originalName: String = "Test tool"
             override var baseMass: Double = 12.0
             override var baseToolSize: Double? = 8.0
             override var category: String = "tool"
+            override var maxDurability: Double = 10.0
+            override var durability: Double = 10.0
         })
+        inventory.getByID(5656)!!.item.name = "Test tool"
 
         inventory.add(object : InventoryItem() {
             override val id: Int = 4633
+            override var originalName: String = "CONTEXT_ITEM_QUEST_NOUN"
             override var baseMass: Double = 1.4
             override var baseToolSize: Double? = null
             override var category: String = "bulk"
@@ -64,12 +69,14 @@ class StateUITest : BasicGameState() {
 
 
 
-private class SimpleUI : UICanvas {
+private class SimpleUI(val inventory: ActorInventory) : UICanvas {
     override var width = 700
-    override var height = 440 // multiple of 40 (2 * font.lineHeight)
+    override var height = 480 // multiple of 40 (2 * font.lineHeight)
     override var handler: UIHandler? = null
     override var openCloseTime: Int = UICanvas.OPENCLOSE_GENERIC
 
+    val itemImage = Image("./assets/item_kari_24.tga")
+
     val buttons = UIItemTextButtonList(
             this,
             arrayOf(
@@ -93,10 +100,48 @@ private class SimpleUI : UICanvas {
             kinematic = true
     )
 
+    val itemStripGutterV = 4
+    val itemStripGutterH = 48
+
+    val itemsStripWidth = width - buttons.width - 2 * itemStripGutterH
+    val items = Array(height / (UIItemInventoryElem.height + itemStripGutterV), { UIItemInventoryElem(
+            parentUI = this,
+            posX = buttons.width + itemStripGutterH,
+            posY = it * (UIItemInventoryElem.height + itemStripGutterV),
+            width = itemsStripWidth,
+            item = null,
+            amount = UIItemInventoryElem.UNIQUE_ITEM_HAS_NO_AMOUNT,
+            itemImage = null,
+            backCol = Color(255, 255, 255, 0x30)
+    ) })
+    val itemsScrollOffset = 0
+
+    var inventorySortList = ArrayList<InventoryPair>()
+    var rebuildList = true
+
     override fun update(gc: GameContainer, delta: Int) {
-        Terrarum.gameLocale = "fiFI" // hot swap this to test
+        Terrarum.gameLocale = "en" // hot swap this to test
 
         buttons.update(gc, delta)
+
+
+        // test fill: just copy the inventory, fuck sorting
+        if (rebuildList) {
+            inventorySortList = ArrayList<InventoryPair>()
+            inventory.forEach { inventorySortList.add(it) }
+            rebuildList = false
+
+            // sort if needed //
+
+            inventorySortList.forEachIndexed { index, pair ->
+                if (index - itemsScrollOffset >= 0 && index < items.size + itemsScrollOffset) {
+                    items[index - itemsScrollOffset].item = pair.item
+                    items[index - itemsScrollOffset].amount = pair.amount
+                    items[index - itemsScrollOffset].itemImage = itemImage
+                }
+            }
+        }
+
     }
 
     override fun render(gc: GameContainer, g: Graphics) {
@@ -104,6 +149,11 @@ private class SimpleUI : UICanvas {
         g.fillRect(0f, 0f, width.toFloat(), height.toFloat())
 
         buttons.render(gc, g)
+
+
+        items.forEach {
+            it.render(gc, g)
+        }
     }
 
     override fun processInput(gc: GameContainer, delta: Int, input: Input) {
@@ -121,7 +171,7 @@ private class SimpleUI : UICanvas {
         UICanvas.endOpeningFade(handler)
     }
 
-    override fun endClosing(gc: GameContainer, delta: Int) {
+    override fun endClosing(gc: GameContainer, delta: Int) {7
         UICanvas.endClosingFade(handler)
     }
 }
\ No newline at end of file
diff --git a/src/net/torvald/terrarum/Terrarum.kt b/src/net/torvald/terrarum/Terrarum.kt
index c2b3368d7..c1adc645e 100644
--- a/src/net/torvald/terrarum/Terrarum.kt
+++ b/src/net/torvald/terrarum/Terrarum.kt
@@ -138,6 +138,7 @@ object Terrarum : StateBasedGame(GAME_NAME) {
     val STATE_ID_TEST_UI = 0x105
 
     val STATE_ID_TOOL_NOISEGEN = 0x200
+    val STATE_ID_TOOL_RUMBLE_DIAGNOSIS = 0x201
 
     var controller: org.lwjgl.input.Controller? = null
         private set
@@ -284,9 +285,9 @@ object Terrarum : StateBasedGame(GAME_NAME) {
         //addState(StateShaderTest())
         //addState(StateNoiseTester())
         addState(StateUITest())
+        //addState(StateControllerRumbleTest())
 
-        //ingame = StateInGame()
-        //addState(ingame)
+        //ingame = StateInGame(); addState(ingame)
 
 
         // foolproof
diff --git a/src/net/torvald/terrarum/UIItemInventoryElem.kt b/src/net/torvald/terrarum/UIItemInventoryElem.kt
new file mode 100644
index 000000000..69324a542
--- /dev/null
+++ b/src/net/torvald/terrarum/UIItemInventoryElem.kt
@@ -0,0 +1,101 @@
+package net.torvald.terrarum
+
+import net.torvald.terrarum.gameitem.InventoryItem
+import net.torvald.terrarum.ui.UICanvas
+import net.torvald.terrarum.ui.UIItem
+import net.torvald.terrarum.ui.UIItemTextButton
+import org.newdawn.slick.Color
+import org.newdawn.slick.GameContainer
+import org.newdawn.slick.Graphics
+import org.newdawn.slick.Image
+
+/**
+ * @param amount: set to -1 (UIItemInventoryElem.UNIQUE_ITEM_HAS_NO_AMOUNT) for unique item (does not show item count)
+ *
+ * Note that the UI will not render if either item or itemImage is null.
+ *
+ * Created by SKYHi14 on 2017-03-16.
+ */
+class UIItemInventoryElem(
+        parentUI: UICanvas,
+        override var posX: Int,
+        override var posY: Int,
+        override val width: Int,
+        var item: InventoryItem?,
+        var amount: Int,
+        var itemImage: Image?,
+        val backCol: Color = Color(0,0,0,0),
+        val backColBlendMode: String = BlendMode.NORMAL
+) : UIItem(parentUI) {
+
+    companion object {
+        val height = 48
+        val UNIQUE_ITEM_HAS_NO_AMOUNT = -1
+    }
+
+    override val height = UIItemInventoryElem.height
+
+    private val imgOffset: Float
+        get() = (this.height - itemImage!!.height).div(2).toFloat() // to snap to the pixel grid
+    private val textOffsetX = 52f
+
+    override fun update(gc: GameContainer, delta: Int) {
+        if (item != null) {
+
+        }
+    }
+
+    override fun render(gc: GameContainer, g: Graphics) {
+        if (item != null && itemImage != null) {
+            g.font = Terrarum.fontGame
+
+
+            if (mouseUp) {
+                BlendMode.resolve(backColBlendMode)
+                g.color = backCol
+                g.fillRect(posX.toFloat(), posY.toFloat(), width.toFloat(), height.toFloat())
+            }
+
+
+            blendNormal()
+
+            g.drawImage(itemImage!!, posX + imgOffset, posY + imgOffset)
+
+            // if mouse is over, text lights up
+            g.color = item!!.nameColour * if (mouseUp) Color(0xffffff) else UIItemTextButton.defaultInactiveCol
+            g.drawString(item!!.name, posX + textOffsetX, posY + 0f)
+
+
+            if (item!!.maxDurability > 0.0) {
+                // TODO durability gauge
+            }
+        }
+    }
+
+    override fun keyPressed(key: Int, c: Char) {
+    }
+
+    override fun keyReleased(key: Int, c: Char) {
+    }
+
+    override fun mouseMoved(oldx: Int, oldy: Int, newx: Int, newy: Int) {
+    }
+
+    override fun mouseDragged(oldx: Int, oldy: Int, newx: Int, newy: Int) {
+    }
+
+    override fun mousePressed(button: Int, x: Int, y: Int) {
+    }
+
+    override fun mouseReleased(button: Int, x: Int, y: Int) {
+    }
+
+    override fun mouseWheelMoved(change: Int) {
+    }
+
+    override fun controllerButtonPressed(controller: Int, button: Int) {
+    }
+
+    override fun controllerButtonReleased(controller: Int, button: Int) {
+    }
+}
\ No newline at end of file
diff --git a/src/net/torvald/terrarum/console/Inventory.kt b/src/net/torvald/terrarum/console/Inventory.kt
index 14ecaa59d..3678773de 100644
--- a/src/net/torvald/terrarum/console/Inventory.kt
+++ b/src/net/torvald/terrarum/console/Inventory.kt
@@ -35,11 +35,11 @@ internal object Inventory : ConsoleCommand {
             Echo("(inventory empty)")
         }
         else {
-            target.inventory.forEach { refId, amount ->
-                if (amount == 0) {
-                    EchoError("Unexpected zero-amounted item: ID $refId")
+            target.inventory.forEach {
+                if (it.amount == 0) {
+                    EchoError("Unexpected zero-amounted item: ID ${it.item.id}")
                 }
-                Echo("ID $refId${if (amount > 1) " ($amount)" else ""}")
+                Echo("ID ${it.item.id}${if (it.amount > 1) " ($it.second)" else ""}")
             }
         }
     }
@@ -62,7 +62,7 @@ internal object Inventory : ConsoleCommand {
         val item = ItemCodex[refId]
 
         // if the item does not exist, add it first
-        if (!target.inventory.contains(item)) {
+        if (!target.inventory.hasItem(item)) {
             target.inventory.add(item)
         }
 
diff --git a/src/net/torvald/terrarum/gameactors/ActorHumanoid.kt b/src/net/torvald/terrarum/gameactors/ActorHumanoid.kt
index cd4774b88..12599d6d9 100644
--- a/src/net/torvald/terrarum/gameactors/ActorHumanoid.kt
+++ b/src/net/torvald/terrarum/gameactors/ActorHumanoid.kt
@@ -140,6 +140,7 @@ open class ActorHumanoid(birth: GameDate, death: GameDate? = null)
         override var baseMass: Double = 0.0
         override var baseToolSize: Double? = null
         override var category = "should_not_be_seen"
+        override val originalName: String = actorValue.getAsString(AVKey.NAME) ?: "(no name)"
     }
 
     override fun update(gc: GameContainer, delta: Int) {
@@ -168,12 +169,12 @@ open class ActorHumanoid(birth: GameDate, death: GameDate? = null)
         }
 
         // update inventory items
-        inventory.forEach { item, amount ->
-            if (!itemEquipped.contains(item)) { // unequipped
-                item.effectWhileInPocket(gc, delta)
+        inventory.forEach {
+            if (!itemEquipped.contains(it.item)) { // unequipped
+                it.item.effectWhileInPocket(gc, delta)
             }
             else { // equipped
-                item.effectWhenEquipped(gc, delta)
+                it.item.effectWhenEquipped(gc, delta)
             }
         }
     }
diff --git a/src/net/torvald/terrarum/gameactors/ActorInventory.kt b/src/net/torvald/terrarum/gameactors/ActorInventory.kt
index d3c3f6170..6dedc51cb 100644
--- a/src/net/torvald/terrarum/gameactors/ActorInventory.kt
+++ b/src/net/torvald/terrarum/gameactors/ActorInventory.kt
@@ -4,6 +4,8 @@ import net.torvald.terrarum.Terrarum
 import net.torvald.terrarum.gameitem.InventoryItem
 import net.torvald.terrarum.itemproperties.ItemCodex
 import java.util.*
+import java.util.concurrent.locks.Lock
+import java.util.concurrent.locks.ReentrantLock
 
 /**
  * Created by minjaesong on 16-03-15.
@@ -22,9 +24,9 @@ class ActorInventory() {
     private var capacityMode: Int
 
     /**
-     * HashMap<ReferenceID, Amounts>
+     * Sorted by referenceID.
      */
-    private val itemList: HashMap<InventoryItem, Int> = HashMap()
+    private val itemList = ArrayList<InventoryPair>()
 
     /**
      * Default constructor with no encumbrance.
@@ -62,32 +64,42 @@ class ActorInventory() {
 
         // If we already have the item, increment the amount
         // If not, add item with specified amount
-        itemList.put(item, itemList[item] ?: 0 + count)
+        val existingItem = getByID(item.id)
+        if (existingItem != null) { // if the item already exists
+            val newCount = getByID(item.id)!!.amount + count
+            itemList.remove(existingItem)
+            itemList.add(InventoryPair(existingItem.item, newCount))
+        }
+        else {
+            itemList.add(InventoryPair(item, count))
+        }
+        insertionSortLastElem(itemList)
     }
 
     fun remove(itemID: Int, count: Int = 1) = remove(ItemCodex[itemID], count)
     fun remove(item: InventoryItem, count: Int = 1) {
-        // check if the item does NOT exist
-        if (itemList[item] == null) {
-            return
+        val existingItem = getByID(item.id)
+        if (existingItem != null) { // if the item already exists
+            val newCount = getByID(item.id)!!.amount - count
+            if (newCount < 0) {
+                throw Error("Tried to remove $count of $item, but the inventory only contains ${getByID(item.id)!!.amount} of them.")
+            }
+            else if (newCount > 0) {
+                add(item, -count)
+            }
+            else {
+                itemList.remove(existingItem)
+            }
         }
         else {
-            // remove the existence of the item if count <= 0
-            if (itemList[item]!! - count <= 0) {
-                itemList.remove(item)
-            }
-            // else, decrement the item count
-            else {
-                itemList.put(item, itemList[item]!! - count)
-            }
+            throw Error("Tried to remove $item, but the inventory does not have it.")
         }
     }
 
-
-    fun contains(item: InventoryItem) = itemList.containsKey(item)
-    fun contains(itemID: Int) = itemList.containsKey(ItemCodex[itemID])
-
-    fun forEach(consumer: (InventoryItem, Int) -> Unit) = itemList.forEach(consumer)
+    /**
+     * HashMap<InventoryItem, Amounts>
+     */
+    fun forEach(consumer: (InventoryPair) -> Unit) = itemList.forEach(consumer)
 
     /**
      * Get capacity of inventory
@@ -109,26 +121,9 @@ class ActorInventory() {
         return capacityMode
     }
 
-    /**
-     * Get reference to the itemList
-     * @return
-     */
-    fun getItemList(): Map<InventoryItem, Int>? {
-        return itemList
-    }
-
-    /**
-     * Get clone of the itemList
-     * @return
-     */
-    @Suppress("UNCHECKED_CAST")
-    fun getCopyOfItemList(): Map<InventoryItem, Int>? {
-        return itemList.clone() as Map<InventoryItem, Int>
-    }
-
     fun getTotalWeight(): Double {
         var weight = 0.0
-        itemList.forEach { item, i -> weight += item.mass * i }
+        itemList.forEach { weight += it.item.mass * it.amount }
 
         return weight
     }
@@ -138,7 +133,7 @@ class ActorInventory() {
      */
     fun getTotalCount(): Int {
         var count = 0
-        itemList.forEach { item, i -> count += i }
+        itemList.forEach { count += it.amount }
 
         return count
     }
@@ -158,10 +153,72 @@ class ActorInventory() {
         if (getCapacityMode() == CAPACITY_MODE_WEIGHT) {
             return capacityByWeight < getTotalWeight()
         } else if (getCapacityMode() == CAPACITY_MODE_COUNT) {
-            return capacityByCount < getTotalWeight()
+            return capacityByCount < getTotalCount()
         } else {
             return false
         }
     }
 
-}
\ No newline at end of file
+
+
+
+
+
+    fun hasItem(item: InventoryItem) = hasItem(item.id)
+    fun hasItem(id: Int) =
+            if (itemList.size == 0)
+                false
+            else
+                itemList.binarySearch(id) >= 0
+    fun getByID(id: Int): InventoryPair? {
+        if (itemList.size == 0)
+            return null
+
+        val index = itemList.binarySearch(id)
+        if (index < 0)
+            return null
+        else
+            return itemList[index]
+    }
+    private fun insertionSortLastElem(arr: ArrayList<InventoryPair>) {
+        lock(ReentrantLock()) {
+            var j = arr.lastIndex - 1
+            val x = arr.last()
+            while (j >= 0 && arr[j].item > x.item) {
+                arr[j + 1] = arr[j]
+                j -= 1
+            }
+            arr[j + 1] = x
+        }
+    }
+    private fun ArrayList<InventoryPair>.binarySearch(ID: Int): Int {
+        // code from collections/Collections.kt
+        var low = 0
+        var high = this.size - 1
+
+        while (low <= high) {
+            val mid = (low + high).ushr(1) // safe from overflows
+
+            val midVal = get(mid).item
+
+            if (ID > midVal.id)
+                low = mid + 1
+            else if (ID < midVal.id)
+                high = mid - 1
+            else
+                return mid // key found
+        }
+        return -(low + 1)  // key not found
+    }
+    inline fun lock(lock: Lock, body: () -> Unit) {
+        lock.lock()
+        try {
+            body()
+        }
+        finally {
+            lock.unlock()
+        }
+    }
+}
+
+data class InventoryPair(val item: InventoryItem, val amount: Int)
\ No newline at end of file
diff --git a/src/net/torvald/terrarum/gameactors/HumanoidNPC.kt b/src/net/torvald/terrarum/gameactors/HumanoidNPC.kt
index 2ab424b20..a9193d9d4 100644
--- a/src/net/torvald/terrarum/gameactors/HumanoidNPC.kt
+++ b/src/net/torvald/terrarum/gameactors/HumanoidNPC.kt
@@ -53,6 +53,7 @@ open class HumanoidNPC(
                 actorValue[AVKey.SCALE] = value
             }
         override var category = "npc"
+        override val originalName: String = actorValue.getAsString(AVKey.NAME) ?: "NPC"
 
         override fun secondaryUse(gc: GameContainer, delta: Int) {
             // TODO place this Actor to the world
diff --git a/src/net/torvald/terrarum/gameitem/InventoryItem.kt b/src/net/torvald/terrarum/gameitem/InventoryItem.kt
index 0316cffd1..cdd1739c0 100644
--- a/src/net/torvald/terrarum/gameitem/InventoryItem.kt
+++ b/src/net/torvald/terrarum/gameitem/InventoryItem.kt
@@ -1,12 +1,14 @@
 package net.torvald.terrarum.gameitem
 
 import net.torvald.terrarum.itemproperties.Material
+import net.torvald.terrarum.langpack.Lang
+import org.newdawn.slick.Color
 import org.newdawn.slick.GameContainer
 
 /**
  * Created by minjaesong on 16-01-16.
  */
-abstract class InventoryItem {
+abstract class InventoryItem : Comparable<InventoryItem> {
     /**
      * Internal ID of an Item, Long
      * 0-4095: Tiles
@@ -16,6 +18,21 @@ abstract class InventoryItem {
      */
     abstract val id: Int
 
+    abstract protected val originalName: String
+
+    private var newName: String = "SET THE NAME!!"
+
+    var name: String
+        set(value) {
+            newName = value
+            isCustomName = true
+        }
+        get() = if (isCustomName) newName else Lang[originalName]
+    open var isCustomName = false // true: reads from lang
+
+    var nameColour = Color.white
+
+
     abstract var baseMass: Double
 
     abstract var baseToolSize: Double?
@@ -59,6 +76,12 @@ abstract class InventoryItem {
      */
     open var scale: Double = 1.0
 
+    /**
+     * Set to zero if durability not applicable
+     */
+    open var maxDurability: Double = 0.0
+    open var durability: Double = maxDurability
+
     /**
      * Effects applied continuously while in pocket
      */
@@ -107,6 +130,16 @@ abstract class InventoryItem {
         if (other == null) return false
         return id == (other as InventoryItem).id
     }
+
+    fun unsetCustomName() {
+        name = originalName
+        isCustomName = false
+        nameColour = Color.white
+    }
+
+    override fun compareTo(other: InventoryItem): Int = (this.id - other.id).sign()
+
+    fun Int.sign(): Int = if (this > 0) 1 else if (this < 0) -1 else 0
 }
 
 object EquipPosition {
diff --git a/src/net/torvald/terrarum/itemproperties/ItemCodex.kt b/src/net/torvald/terrarum/itemproperties/ItemCodex.kt
index 1c3e9dbda..0ece472a9 100644
--- a/src/net/torvald/terrarum/itemproperties/ItemCodex.kt
+++ b/src/net/torvald/terrarum/itemproperties/ItemCodex.kt
@@ -42,6 +42,7 @@ object ItemCodex {
                 override var baseToolSize: Double? = null
                 override var equipPosition = EquipPosition.HAND_GRIP
                 override var category = "block"
+                override val originalName = TileCodex[i].nameKey
 
                 override fun primaryUse(gc: GameContainer, delta: Int) {
                     // TODO base punch attack
diff --git a/src/net/torvald/terrarum/ui/UIItemTextButton.kt b/src/net/torvald/terrarum/ui/UIItemTextButton.kt
index 04b3999eb..4df3c201c 100644
--- a/src/net/torvald/terrarum/ui/UIItemTextButton.kt
+++ b/src/net/torvald/terrarum/ui/UIItemTextButton.kt
@@ -24,12 +24,13 @@ class UIItemTextButton(
         val highlightCol: Color = Color(0x00f8ff),
         val highlightBackCol: Color = Color(0xb0b0b0),
         val highlightBackBlendMode: String = BlendMode.MULTIPLY,
-        val inactiveCol: Color = Color(0xc8c8c8)
+        val inactiveCol: Color = UIItemTextButton.defaultInactiveCol
 ) : UIItem(parentUI) {
 
     companion object {
         val font = Terrarum.fontGame!!
         val height = font.lineHeight * 2
+        val defaultInactiveCol: Color = Color(0xc8c8c8)
     }
 
     private val label: String