selecting and consuming item in inventory

src/net/torvald/terrarum/gameactors/Pocketed.kt

@@ -1,5 +1,6 @@
 package net.torvald.terrarum.gameactors
 
+import net.torvald.terrarum.Terrarum
 import net.torvald.terrarum.gameitem.InventoryItem
 import java.util.*
 
@@ -10,9 +11,38 @@ interface Pocketed {
 
     var inventory: ActorInventory
 
-    /**
-     * List of all equipped items (tools, armours, rings, necklaces, etc.)
-     */
-    val itemEquipped: Array<InventoryItem?>
 
+    fun unequipItem(item: InventoryItem) {
+        if (item.equipPosition == InventoryItem.EquipPosition.NULL)
+            throw Error("Unequipping the item that cannot be equipped")
+
+        if (!inventory.hasItem(item))
+            throw Error("Unequipping the item that does not exist in inventory")
+
+        inventory.itemEquipped[item.equipPosition] = null
+        item.effectOnUnequip(Terrarum.appgc, Terrarum.UPDATE_DELTA)
+    }
+
+    fun equipItem(item: InventoryItem) {
+        if (item.equipPosition >= 0) {
+            inventory.itemEquipped[item.equipPosition] = item
+            item.effectWhenEquipped(Terrarum.appgc, Terrarum.UPDATE_DELTA)
+        }
+    }
+
+    fun isEquipped(item: InventoryItem): Boolean {
+        return inventory.itemEquipped[item.equipPosition] == item
+    }
+
+
+
+    fun consumePrimary(item: InventoryItem) {
+        if (item.primaryUse(Terrarum.appgc, Terrarum.UPDATE_DELTA))
+            inventory.consumeItem(item) // consume on successful
+    }
+
+    fun consumeSecondary(item: InventoryItem) {
+        if (item.secondaryUse(Terrarum.appgc, Terrarum.UPDATE_DELTA))
+            inventory.consumeItem(item) // consume on successful
+    }
 }