diff --git a/src/net/torvald/terrarum/TerrarumAppConfiguration.kt b/src/net/torvald/terrarum/TerrarumAppConfiguration.kt
index 4cff3e5d9..0cac5ab5e 100644
--- a/src/net/torvald/terrarum/TerrarumAppConfiguration.kt
+++ b/src/net/torvald/terrarum/TerrarumAppConfiguration.kt
@@ -48,8 +48,9 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
      * e.g. 0x02010034 will be translated as 2.1.52
      *
      */
-    const val VERSION_RAW = 0x00030001
-    // Commit counts up to the Release 0.3.0: 2259 (plz update!)
+    const val VERSION_RAW = 0x00030002
+    // Commit counts up to the Release 0.3.0: 2259
+    // Commit counts up to the Release 0.3.1: 2278
 
     //////////////////////////////////////////////////////////
     //             CONFIGURATION FOR TILE MAKER             //
diff --git a/src/net/torvald/terrarum/UIItemInventoryElemSimple.kt b/src/net/torvald/terrarum/UIItemInventoryElemSimple.kt
index a987c7a09..8730b2ab4 100644
--- a/src/net/torvald/terrarum/UIItemInventoryElemSimple.kt
+++ b/src/net/torvald/terrarum/UIItemInventoryElemSimple.kt
@@ -20,13 +20,13 @@ class UIItemInventoryElemSimple(
         initialX: Int,
         initialY: Int,
         override var item: GameItem?,
-        override var amount: Int,
+        override var amount: Long,
         override var itemImage: TextureRegion?,
         override var quickslot: Int? = null,
         override var equippedSlot: Int? = null,
         val drawBackOnNull: Boolean = true,
-        keyDownFun: (GameItem?, Int, Int) -> Unit,
-        touchDownFun: (GameItem?, Int, Int) -> Unit
+        keyDownFun: (GameItem?, Long, Int) -> Unit, // Item, Amount, Keycode
+        touchDownFun: (GameItem?, Long, Int) -> Unit // Item, Amount, Button
 ) : UIItemInventoryCellBase(parentUI, initialX, initialY, item, amount, itemImage, quickslot, equippedSlot, keyDownFun, touchDownFun) {
     
     companion object {
diff --git a/src/net/torvald/terrarum/UIItemInventoryElemWide.kt b/src/net/torvald/terrarum/UIItemInventoryElemWide.kt
index 703baa4ba..cfe2ae9ef 100644
--- a/src/net/torvald/terrarum/UIItemInventoryElemWide.kt
+++ b/src/net/torvald/terrarum/UIItemInventoryElemWide.kt
@@ -24,18 +24,18 @@ class UIItemInventoryElemWide(
         initialY: Int,
         override val width: Int,
         override var item: GameItem?,
-        override var amount: Int,
+        override var amount: Long,
         override var itemImage: TextureRegion?,
         override var quickslot: Int? = null,
         override var equippedSlot: Int? = null,
         val drawBackOnNull: Boolean = true,
-        keyDownFun: (GameItem?, Int, Int) -> Unit,
-        touchDownFun: (GameItem?, Int, Int) -> Unit
+        keyDownFun: (GameItem?, Long, Int) -> Unit, // Item, Amount, Keycode
+        touchDownFun: (GameItem?, Long, Int) -> Unit // Item, Amount, Button
 ) : UIItemInventoryCellBase(parentUI, initialX, initialY, item, amount, itemImage, quickslot, equippedSlot, keyDownFun, touchDownFun) {
 
     companion object {
         val height = 48
-        val UNIQUE_ITEM_HAS_NO_AMOUNT = -1
+        val UNIQUE_ITEM_HAS_NO_AMOUNT = -1L
 
         internal val durabilityBarThickness = 3
     }
@@ -100,7 +100,7 @@ class UIItemInventoryElemWide(
             if (INVEN_DEBUG_MODE) {
                 App.fontGame.draw(batch,
                         // print static id, dynamic id, and count
-                        "${item!!.originalID}/${item!!.dynamicID}" + (if (amount > 0 && item!!.stackable) "$fwsp($amountString)" else if (amount != 1) "$fwsp!!$amountString!!" else ""),
+                        "${item!!.originalID}/${item!!.dynamicID}" + (if (amount > 0 && item!!.stackable) "$fwsp($amountString)" else if (amount != 1L) "$fwsp!!$amountString!!" else ""),
                         posX + textOffsetX,
                         posY + textOffsetY
                 )
@@ -108,7 +108,7 @@ class UIItemInventoryElemWide(
             else {
                 App.fontGame.draw(batch,
                         // print name and amount in parens
-                        item!!.name + (if (amount > 0 && item!!.stackable) "$fwsp($amountString)" else if (amount != 1) "$fwsp!!$amountString!!" else ""),
+                        item!!.name + (if (amount > 0 && item!!.stackable) "$fwsp($amountString)" else if (amount != 1L) "$fwsp!!$amountString!!" else ""),
 
                         posX + textOffsetX,
                         posY + textOffsetY
diff --git a/src/net/torvald/terrarum/modulebasegame/console/Inventory.kt b/src/net/torvald/terrarum/modulebasegame/console/Inventory.kt
index 3ea0fdd06..4c4c61185 100644
--- a/src/net/torvald/terrarum/modulebasegame/console/Inventory.kt
+++ b/src/net/torvald/terrarum/modulebasegame/console/Inventory.kt
@@ -28,8 +28,8 @@ internal object Inventory : ConsoleCommand {
             if (actor != null) {
                 when (args[1]) {
                     "list"   -> listInventory(actor)
-                    "add"    -> if (args.size > 3) addItem(actor, args[2], args[3].toInt()) else addItem(actor, args[2])
-                    "remove" -> if (args.size > 3) removeItem(actor, args[2], args[3].toInt()) else removeItem(actor, args[2])
+                    "add"    -> if (args.size > 3) addItem(actor, args[2], args[3].toLong()) else addItem(actor, args[2])
+                    "remove" -> if (args.size > 3) removeItem(actor, args[2], args[3].toLong()) else removeItem(actor, args[2])
                     "equip"  -> equipItem(actor, args[2])
                     "unequip"-> unequipItem(actor, args[2])
                     else     -> printUsage()
@@ -44,12 +44,12 @@ internal object Inventory : ConsoleCommand {
     private fun getActor() = Terrarum.ingame?.getActorByID(targetID) as? Pocketed
 
     private fun listInventory(actor: Pocketed) {
-        if (actor.inventory.getTotalUniqueCount() == 0) {
+        if (actor.inventory.getTotalUniqueCount() == 0L) {
             Echo("(inventory empty)")
         }
         else {
             actor.inventory.forEach { val (item, amount) = it
-                if (amount == 0) {
+                if (amount == 0L) {
                     EchoError("Unexpected zero-amounted item: ID $item")
                 }
                 Echo("${ccW}ID $ccY$item${if (amount > 1) "$ccW ($ccG$amount$ccW)" else ""}")
@@ -57,7 +57,7 @@ internal object Inventory : ConsoleCommand {
         }
     }
 
-    private fun addItem(actor: Pocketed, refId: ItemID, amount: Int = 1) {
+    private fun addItem(actor: Pocketed, refId: ItemID, amount: Long = 1L) {
         val item = ItemCodex[refId]
         if (item != null) {
             actor.addItem(item, amount)
@@ -66,7 +66,7 @@ internal object Inventory : ConsoleCommand {
         else EchoError("No such item: $refId")
     }
 
-    private fun removeItem(actor: Pocketed, refId: ItemID, amount: Int = 1) {
+    private fun removeItem(actor: Pocketed, refId: ItemID, amount: Long = 1L) {
         val item = ItemCodex[refId]
         if (item != null) {
             actor.removeItem(item, amount)
diff --git a/src/net/torvald/terrarum/modulebasegame/gameactors/ActorInventory.kt b/src/net/torvald/terrarum/modulebasegame/gameactors/ActorInventory.kt
index ba2716efb..602328ca2 100644
--- a/src/net/torvald/terrarum/modulebasegame/gameactors/ActorInventory.kt
+++ b/src/net/torvald/terrarum/modulebasegame/gameactors/ActorInventory.kt
@@ -19,7 +19,7 @@ class ActorInventory() : FixtureInventory() {
     @Transient lateinit var actor: Pocketed
         internal set
 
-    constructor(actor: Pocketed, maxCapacity: Int, capacityMode: Int) : this() {
+    constructor(actor: Pocketed, maxCapacity: Long, capacityMode: Int) : this() {
         this.actor = actor
         this.maxCapacity = maxCapacity
         this.capacityMode = capacityMode
@@ -38,10 +38,10 @@ class ActorInventory() : FixtureInventory() {
     val quickSlot = Array<ItemID?>(UIQuickslotBar.SLOT_COUNT) { null } // 0: Slot 1, 9: Slot 10
 
 
-    override fun remove(itemID: ItemID, count: Int) = remove(ItemCodex[itemID]!!, count)
+    override fun remove(itemID: ItemID, count: Long) = remove(ItemCodex[itemID]!!, count)
     /** Will check existence of the item using its Dynamic ID; careful with command order!
      *      e.g. re-assign after this operation */
-    override fun remove(item: GameItem, count: Int) {
+    override fun remove(item: GameItem, count: Long) {
         super.remove(item, count) { existingItem ->
             // unequip, if applicable
             actor.unequipItem(existingItem.itm)
diff --git a/src/net/torvald/terrarum/modulebasegame/gameactors/DroppedItem.kt b/src/net/torvald/terrarum/modulebasegame/gameactors/DroppedItem.kt
index f9ac58575..9b31a7acf 100644
--- a/src/net/torvald/terrarum/modulebasegame/gameactors/DroppedItem.kt
+++ b/src/net/torvald/terrarum/modulebasegame/gameactors/DroppedItem.kt
@@ -28,7 +28,7 @@ open class DroppedItem : ActorWithBody {
 
     @Transient private var textureRegion: TextureRegion? = null // deserialiser won't call setter of the fields
 
-    var itemCount = 1
+    var itemCount = 1L
 
     protected constructor()
 
diff --git a/src/net/torvald/terrarum/modulebasegame/gameactors/FixtureInventory.kt b/src/net/torvald/terrarum/modulebasegame/gameactors/FixtureInventory.kt
index a53ef295c..3c875f9ab 100644
--- a/src/net/torvald/terrarum/modulebasegame/gameactors/FixtureInventory.kt
+++ b/src/net/torvald/terrarum/modulebasegame/gameactors/FixtureInventory.kt
@@ -15,10 +15,10 @@ import java.util.concurrent.locks.ReentrantLock
 
 open class FixtureInventory() {
 
-    var maxCapacity = 100
+    var maxCapacity = 100L
     var capacityMode = CAPACITY_MODE_COUNT
 
-    constructor(maxCapacity: Int, capacityMode: Int) : this() {
+    constructor(maxCapacity: Long, capacityMode: Int) : this() {
         this.maxCapacity = maxCapacity
         this.capacityMode = capacityMode
     }
@@ -35,23 +35,23 @@ open class FixtureInventory() {
     val itemList = ArrayList<InventoryPair>()
     var wallet = BigInteger("0") // unified currency for whole civs; Dwarf Fortress approach seems too complicated
 
-    fun isEmpty() = getTotalCount() == 0
+    fun isEmpty() = getTotalCount() == 0L
     fun isNotEmpty() = getTotalCount() > 0
 
-    open fun add(itemID: ItemID, count: Int = 1) {
+    open fun add(itemID: ItemID, count: Long = 1) {
         if (ItemCodex[itemID] == null)
             throw NullPointerException("Item not found: $itemID")
         else
             add(ItemCodex[itemID]!!, count)
     }
-    open fun add(item: GameItem, count: Int = 1) {
+    open fun add(item: GameItem, count: Long = 1L) {
 
 //        println("[ActorInventory] add-by-elem $item, $count")
 
         // other invalid values
-        if (count == 0)
+        if (count == 0L)
             throw IllegalArgumentException("[${this.javaClass.canonicalName}] Item count is zero.")
-        if (count < 0)
+        if (count < 0L)
             throw IllegalArgumentException("Item count is negative number. If you intended removing items, use remove()\n" +
                                            "These commands are NOT INTERCHANGEABLE; they handle things differently according to the context.")
         if (item.originalID == "actor:${Terrarum.PLAYER_REF_ID}" || item.originalID == ("actor:${0x51621D}")) // do not delete this magic
@@ -71,7 +71,10 @@ open class FixtureInventory() {
         // if the item already exists
         if (existingItem != null) {
             // increment count
-            existingItem.qty += count
+            if (existingItem.qty + count < 0L) // check numeric overflow
+                existingItem.qty = Long.MAX_VALUE
+            else
+                existingItem.qty += count
         }
         // new item
         else {
@@ -80,20 +83,20 @@ open class FixtureInventory() {
         insertionSortLastElem(itemList)
     }
 
-    open fun remove(itemID: ItemID, count: Int) = remove(ItemCodex[itemID]!!, count) {}
-    open fun remove(item: GameItem, count: Int = 1) = remove(item, count) {}
+    open fun remove(itemID: ItemID, count: Long) = remove(ItemCodex[itemID]!!, count) {}
+    open fun remove(item: GameItem, count: Long = 1L) = remove(item, count) {}
 
-    open fun remove(itemID: ItemID, count: Int, unequipFun: (InventoryPair) -> Unit) =
+    open fun remove(itemID: ItemID, count: Long, unequipFun: (InventoryPair) -> Unit) =
             remove(ItemCodex[itemID]!!, count, unequipFun)
     /** Will check existence of the item using its Dynamic ID; careful with command order!
      *      e.g. re-assign after this operation */
-    open fun remove(item: GameItem, count: Int = 1, unequipFun: (InventoryPair) -> Unit) {
+    open fun remove(item: GameItem, count: Long = 1, unequipFun: (InventoryPair) -> Unit) {
 
         println("[ActorInventory] remove $item, $count")
 
-        if (count == 0)
+        if (count == 0L)
             throw IllegalArgumentException("[${this.javaClass.canonicalName}] Item count is zero.")
-        if (count < 0)
+        if (count < 0L)
             throw IllegalArgumentException("[${this.javaClass.canonicalName}] Item count is negative number. If you intended adding items, use add()" +
                                            "These commands are NOT INTERCHANGEABLE; they handle things differently according to the context.")
 
@@ -144,12 +147,12 @@ open class FixtureInventory() {
     /**
      * Real amount
      */
-    fun getTotalCount(): Int = itemList.sumOf { it.qty }
+    fun getTotalCount(): Long = itemList.sumOf { it.qty }
 
     /**
      * Unique amount, multiple items are calculated as one
      */
-    fun getTotalUniqueCount(): Int = itemList.size
+    fun getTotalUniqueCount(): Long = itemList.size.toLong()
 
     /**
      * Check whether the itemList contains too many items
@@ -229,11 +232,11 @@ open class FixtureInventory() {
 class InventoryPair {
 
     var itm: ItemID = ""; private set
-    var qty: Int = 0
+    var qty: Long = 0
 
     private constructor()
 
-    constructor(item: ItemID, quantity: Int) : this() {
+    constructor(item: ItemID, quantity: Long) : this() {
         itm = item
         qty = quantity
     }
diff --git a/src/net/torvald/terrarum/modulebasegame/gameactors/FixtureStorageChest.kt b/src/net/torvald/terrarum/modulebasegame/gameactors/FixtureStorageChest.kt
index 925a88a21..5f4e8dd95 100644
--- a/src/net/torvald/terrarum/modulebasegame/gameactors/FixtureStorageChest.kt
+++ b/src/net/torvald/terrarum/modulebasegame/gameactors/FixtureStorageChest.kt
@@ -77,12 +77,12 @@ internal class UIStorageChest : UICanvas(
     override var openCloseTime: Second = 0.0f
 
     private val negotiator = object : InventoryNegotiator() {
-        override fun accept(player: FixtureInventory, fixture: FixtureInventory, item: GameItem, amount: Int) {
+        override fun accept(player: FixtureInventory, fixture: FixtureInventory, item: GameItem, amount: Long) {
             player.remove(item, amount)
             fixture.add(item, amount)
         }
 
-        override fun reject(fixture: FixtureInventory, player: FixtureInventory, item: GameItem, amount: Int) {
+        override fun reject(fixture: FixtureInventory, player: FixtureInventory, item: GameItem, amount: Long) {
             fixture.remove(item, amount)
             player.add(item, amount)
         }
diff --git a/src/net/torvald/terrarum/modulebasegame/gameactors/Pocketed.kt b/src/net/torvald/terrarum/modulebasegame/gameactors/Pocketed.kt
index 8ef68ba86..5d68af7cd 100644
--- a/src/net/torvald/terrarum/modulebasegame/gameactors/Pocketed.kt
+++ b/src/net/torvald/terrarum/modulebasegame/gameactors/Pocketed.kt
@@ -85,10 +85,10 @@ interface Pocketed {
     }
     fun equipped(itemID: ItemID) = equipped(ItemCodex[itemID]!!)
 
-    fun addItem(itemID: ItemID, count: Int = 1) = inventory.add(ItemCodex[itemID]!!, count)
-    fun addItem(item: GameItem, count: Int = 1) = inventory.add(item, count)
-    fun removeItem(itemID: ItemID, count: Int = 1) = inventory.remove(ItemCodex[itemID]!!, count)
-    fun removeItem(item: GameItem, count: Int = 1) = inventory.remove(item, count)
+    fun addItem(itemID: ItemID, count: Long = 1L) = inventory.add(ItemCodex[itemID]!!, count)
+    fun addItem(item: GameItem, count: Long = 1L) = inventory.add(item, count)
+    fun removeItem(itemID: ItemID, count: Long = 1L) = inventory.remove(ItemCodex[itemID]!!, count)
+    fun removeItem(item: GameItem, count: Long = 1L) = inventory.remove(item, count)
 
     fun hasItem(item: GameItem) = inventory.contains(item.dynamicID)
     fun hasItem(id: ItemID) = inventory.contains(id)
diff --git a/src/net/torvald/terrarum/modulebasegame/gameitems/PickaxeGeneric.kt b/src/net/torvald/terrarum/modulebasegame/gameitems/PickaxeGeneric.kt
index 47031c883..9072fad34 100644
--- a/src/net/torvald/terrarum/modulebasegame/gameitems/PickaxeGeneric.kt
+++ b/src/net/torvald/terrarum/modulebasegame/gameitems/PickaxeGeneric.kt
@@ -44,7 +44,7 @@ object PickaxeCore {
         // if mw or mh is even number, make it closer toward the actor
         if (mw % 2 == 0 && apos.x > mx * TILE_SIZE) xoff += 1
         if (mh % 2 == 0 && apos.y > my * TILE_SIZE) yoff += 1
-        
+
         var usageStatus = false
 
         for (oy in 0 until mh) for (ox in 0 until mw) {
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/InventoryNegotiator.kt b/src/net/torvald/terrarum/modulebasegame/ui/InventoryNegotiator.kt
index e57571ad4..7619af772 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/InventoryNegotiator.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/InventoryNegotiator.kt
@@ -11,7 +11,7 @@ abstract class InventoryNegotiator {
     /** Retrieve item filter to be used to show only the acceptable items when player's own inventory is being displayed */
     open fun getItemFilter(): List<String> = listOf(CAT_ALL) // GameItem.Category
     /** Accepts item from the player and pass it to right inventory (object), slot (UI), etc... */
-    abstract fun accept(player: FixtureInventory, fixture: FixtureInventory, item: GameItem, amount: Int = 1)
+    abstract fun accept(player: FixtureInventory, fixture: FixtureInventory, item: GameItem, amount: Long = 1L)
     /** Rejects item and perhaps returns it back to the player, or make explosion, etc... */
-    abstract fun reject(fixture: FixtureInventory, player: FixtureInventory, item: GameItem, amount: Int = 1)
+    abstract fun reject(fixture: FixtureInventory, player: FixtureInventory, item: GameItem, amount: Long = 1L)
 }
\ No newline at end of file
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UIItemInventoryCellBase.kt b/src/net/torvald/terrarum/modulebasegame/ui/UIItemInventoryCellBase.kt
index 8ef3f41dc..3af29c5ae 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UIItemInventoryCellBase.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UIItemInventoryCellBase.kt
@@ -10,6 +10,7 @@ import net.torvald.terrarum.abs
 import net.torvald.terrarum.gameitems.GameItem
 import net.torvald.terrarum.ui.UICanvas
 import net.torvald.terrarum.ui.UIItem
+import kotlin.math.absoluteValue
 import kotlin.math.roundToInt
 
 /**
@@ -22,12 +23,12 @@ abstract class UIItemInventoryCellBase(
         initialX: Int,
         initialY: Int,
         open var item: GameItem?,
-        open var amount: Int,
+        open var amount: Long,
         open var itemImage: TextureRegion?,
         open var quickslot: Int? = null,
         open var equippedSlot: Int? = null,
-        val keyDownFun: (GameItem?, Int, Int) -> Unit,
-        val touchDownFun: (GameItem?, Int, Int) -> Unit
+        val keyDownFun: (GameItem?, Long, Int) -> Unit, // Item, Amount, Keycode
+        val touchDownFun: (GameItem?, Long, Int) -> Unit // Item, Amount, Button
 ) : UIItem(parentUI, initialX, initialY) {
     abstract override fun update(delta: Float)
     abstract override fun render(batch: SpriteBatch, camera: Camera)
@@ -64,7 +65,7 @@ object UIItemInventoryCellCommonRes {
     
     fun getHealthMeterColour(value: Int, start: Int, end: Int) = getHealthMeterColour(value.toFloat(), start.toFloat(), end.toFloat())
 
-    fun Int.toItemCountText() = (if (this < 0) "-" else "") + when (this.abs()) {
+    fun Long.toItemCountText() = (if (this < 0) "-" else "") + when (this.absoluteValue) {
         in 0..999999 -> "$this"
         in 1_000_000..999_999_999 -> "${this / 1_000_000}.${this.rem(1_000_000) / 10_000}M"
         else -> "${this / 1_000_000_000}.${this.rem(1_000_000_000) / 10_000_000}B"
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UIItemInventoryEquippedView.kt b/src/net/torvald/terrarum/modulebasegame/ui/UIItemInventoryEquippedView.kt
index 913143959..f4a7e7d05 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UIItemInventoryEquippedView.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UIItemInventoryEquippedView.kt
@@ -8,6 +8,8 @@ import net.torvald.terrarum.gameitems.GameItem
 import net.torvald.terrarum.modulebasegame.ui.UIInventoryFull.Companion.itemListHeight
 import net.torvald.terrarum.modulebasegame.ui.UIItemInventoryItemGrid.Companion.createInvCellGenericKeyDownFun
 import net.torvald.terrarum.modulebasegame.ui.UIItemInventoryItemGrid.Companion.createInvCellGenericTouchDownFun
+import net.torvald.terrarum.spriteassembler.ADProperties.Companion.EXTRA_HEADROOM_X
+import net.torvald.terrarum.spriteassembler.ADProperties.Companion.EXTRA_HEADROOM_Y
 import net.torvald.terrarum.ui.Toolkit
 import net.torvald.terrarum.ui.UICanvas
 import net.torvald.terrarum.ui.UIItem
@@ -85,8 +87,8 @@ class UIItemInventoryEquippedView(
             batch.color = SPRITE_DRAW_COL
             batch.draw(
                     it.textureRegion.get(0, 0),
-                    posX + (width - it.cellWidth).div(2).toFloat(),
-                    posY + (width - it.cellHeight).div(2).toFloat()
+                    posX + (width - it.cellWidth + EXTRA_HEADROOM_X).div(2).toFloat(),
+                    posY + (width - it.cellHeight - EXTRA_HEADROOM_Y).div(2).toFloat()
             )
 
         }
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UIItemInventoryItemGrid.kt b/src/net/torvald/terrarum/modulebasegame/ui/UIItemInventoryItemGrid.kt
index 3ac361d60..91ce294d9 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UIItemInventoryItemGrid.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UIItemInventoryItemGrid.kt
@@ -42,8 +42,8 @@ class UIItemInventoryItemGrid(
         val verticalCells: Int,
         val drawScrollOnRightside: Boolean = false,
         val drawWallet: Boolean = true,
-        keyDownFun: (GameItem?, Int, Int) -> Unit,
-        touchDownFun: (GameItem?, Int, Int) -> Unit
+        keyDownFun: (GameItem?, Long, Int) -> Unit, // Item, Amount, Keycode
+        touchDownFun: (GameItem?, Long, Int) -> Unit // Item, Amount, Button
 ) : UIItem(parentUI, initialX, initialY) {
 
     // deal with the moving position
@@ -99,8 +99,8 @@ class UIItemInventoryItemGrid(
         fun getEstimatedW(horizontalCells: Int) = horizontalCells * UIItemInventoryElemSimple.height + (horizontalCells - 1) * listGap
         fun getEstimatedH(verticalCells: Int) = verticalCells * UIItemInventoryElemSimple.height + (verticalCells - 1) * listGap
 
-        fun createInvCellGenericKeyDownFun(): (GameItem?, Int, Int) -> Unit {
-            return { item: GameItem?, amount: Int, keycode: Int ->
+        fun createInvCellGenericKeyDownFun(): (GameItem?, Long, Int) -> Unit {
+            return { item: GameItem?, amount: Long, keycode: Int ->
                 if (item != null && Terrarum.ingame != null && keycode in Input.Keys.NUM_0..Input.Keys.NUM_9) {
                     val player = (Terrarum.ingame!! as TerrarumIngame).actorNowPlaying
                     if (player != null) {
@@ -129,8 +129,8 @@ class UIItemInventoryItemGrid(
             }
         }
 
-        fun createInvCellGenericTouchDownFun(listRebuildFun: () -> Unit): (GameItem?, Int, Int) -> Unit {
-            return { item: GameItem?, amount: Int, button: Int ->
+        fun createInvCellGenericTouchDownFun(listRebuildFun: () -> Unit): (GameItem?, Long, Int) -> Unit {
+            return { item: GameItem?, amount: Long, button: Int ->
                 if (item != null && Terrarum.ingame != null) {
                     // equip da shit
                     val itemEquipSlot = item.equipPosition