feat: add thanos' ai

src/main/java/uulm/teamname/marvelous/gamelibrary/entities/Inventory.java

@@ -80,7 +80,10 @@ public class Inventory implements Iterable<StoneType> {
         content.remove(stone);
     }
 
-    /** Returns the stones inside of the Inventory as Array of {@link StoneType StoneTypes} */
+    /**
+     * Returns the stones inside of the Inventory as Array of {@link StoneType StoneTypes}.
+     * @return The array of stones the inventory has
+     */
     public StoneType[] getStonesAsArray() {
         var toReturn = new StoneType[content.size()];
         var iterator = content.iterator();
@@ -90,6 +93,17 @@ public class Inventory implements Iterable<StoneType> {
         return toReturn;
     }
 
+    /**
+     * Transfers the stones inside of the Inventory to a different Inventory.
+     * @param to The {@link Inventory} to transfer to
+     */
+    public void transfer(Inventory to) {
+        for(StoneType stone: content) {
+            to.addStone(stone);
+        }
+        content.clear();
+    }
+
     /** Iterates over the inventory. */
     @Override
     public Iterator<StoneType> iterator() {

src/main/java/uulm/teamname/marvelous/gamelibrary/entities/NPC.java

@@ -20,7 +20,7 @@ public class NPC extends Entity {
      */
     public NPC(EntityID id, IntVector2 position, int maxMP, ArrayList<StoneType> inventory) {
         super(id, position);
-        solid = false;
+        solid = true;
         opaque = true;
         this.inventory = new Inventory(inventory);
         this.mp = new Stat(StatType.MP, maxMP);