working vital meter for tool durability

src/net/torvald/terrarum/AmmoMeterProxy.kt

@@ -0,0 +1,36 @@
+package net.torvald.terrarum
+
+import net.torvald.terrarum.gameactors.ActorHumanoid
+import net.torvald.terrarum.itemproperties.InventoryItem
+import net.torvald.terrarum.itemproperties.ItemCodex
+import net.torvald.terrarum.ui.UIVitalMetre
+
+/**
+ * Created by SKYHi14 on 2017-04-21.
+ */
+object AmmoMeterProxy {
+
+    operator fun invoke(actor: ActorHumanoid, meter: UIVitalMetre) {
+        val currentItem = actor.inventory.itemEquipped[InventoryItem.EquipPosition.HAND_GRIP]
+
+        if (currentItem == null) {
+            meter.vitalGetterMax = { null }
+            meter.vitalGetterVal = { null }
+        }
+        else {
+            meter.vitalGetterVal = {
+                if (ItemCodex[currentItem.id].consumable)
+                actor.inventory.getByID(currentItem.id)!!.amount.toFloat()
+            else
+                actor.inventory.getByID(currentItem.id)!!.item.durability
+            }
+
+            meter.vitalGetterMax = {
+                if (ItemCodex[currentItem.id].consumable)
+                    500f
+                else
+                    actor.inventory.getByID(currentItem.id)!!.item.maxDurability.toFloat()
+            }
+        }
+    }
+}