fixes, bits and pieces, changes in ID referencing, terrain and wall takes damage, working test pickaxe, and a new issue

src/net/torvald/terrarum/KVHashMap.kt

@@ -3,6 +3,7 @@ package net.torvald.terrarum
 import com.google.gson.JsonPrimitive
 import java.util.*
 import java.util.function.Consumer
+import kotlin.collections.HashMap
 
 typealias ActorValue = KVHashMap
 typealias ItemValue = KVHashMap
@@ -13,7 +14,15 @@ typealias GameConfig = KVHashMap
  */
 class KVHashMap {
 
-    private val hashMap = HashMap<String, Any>()
+    constructor() {
+        hashMap = HashMap<String, Any>()
+    }
+
+    private constructor(newMap: HashMap<String, Any>) {
+        hashMap = newMap
+    }
+
+    private val hashMap: HashMap<String, Any>
 
     /**
      * Add key-value pair to the configuration table.
@@ -108,4 +117,9 @@ class KVHashMap {
             hashMap.remove(key, hashMap[key]!!)
     }
 
+    fun clone(): KVHashMap {
+        val cloneOfMap = hashMap.clone() as HashMap<String, Any>
+        return KVHashMap(cloneOfMap)
+    }
+
 }