More work on the new player knowledge system

src/main/java/com/pahimar/ee3/knowledge/PlayerKnowledge.java

@@ -11,9 +11,6 @@ import java.util.TreeSet;
 
 public class PlayerKnowledge {
 
-    private static final int VERSION = 1;
-
-    private int version;
     private Set<ItemStack> knownItemStacks;
 
     public PlayerKnowledge() {
@@ -22,7 +19,6 @@ public class PlayerKnowledge {
 
     public PlayerKnowledge(Collection<ItemStack> itemStacks) {
 
-        version = VERSION;
         knownItemStacks = new TreeSet<>(Comparators.ID_COMPARATOR);
 
         if (itemStacks != null) {
@@ -36,7 +32,7 @@ public class PlayerKnowledge {
         return knownItemStacks.contains(ItemHelper.clone(itemStack, 1));
     }
 
-    public Set<ItemStack> get() {
+    public Set<ItemStack> getKnownItemStacks() {
         return knownItemStacks;
     }
 
@@ -48,6 +44,13 @@ public class PlayerKnowledge {
         }
     }
 
+    public void learn(Collection<ItemStack> itemStacks) {
+
+        for (ItemStack itemStack : itemStacks) {
+            learn(itemStack);
+        }
+    }
+
     public void forget(ItemStack itemStack) {
 
         if (itemStack != null) {
@@ -56,7 +59,28 @@ public class PlayerKnowledge {
         }
     }
 
+    public void forget(Collection<ItemStack> itemStacks) {
+
+        for (ItemStack itemStack : itemStacks) {
+            forget(itemStack);
+        }
+    }
+
     public void forgetAll() {
         knownItemStacks.clear();
     }
+
+    @Override
+    public String toString() {
+
+        StringBuilder stringBuilder = new StringBuilder();
+
+        stringBuilder.append("[");
+        for (ItemStack itemStack : knownItemStacks) {
+            stringBuilder.append(String.format("%s, ", ItemHelper.toString(itemStack)));
+        }
+        stringBuilder.append("]");
+
+        return stringBuilder.toString();
+    }
 }

src/main/java/com/pahimar/ee3/util/SerializationHelper.java

@@ -10,6 +10,7 @@ import com.pahimar.ee3.api.exchange.EnergyValue;
 import com.pahimar.ee3.exchange.EnergyValueStackMapping;
 import com.pahimar.ee3.exchange.OreStack;
 import com.pahimar.ee3.exchange.WrappedStack;
+import com.pahimar.ee3.knowledge.PlayerKnowledge;
 import com.pahimar.ee3.knowledge.TransmutationKnowledge;
 import com.pahimar.ee3.reference.Reference;
 import com.pahimar.ee3.util.serialize.*;
@@ -35,6 +36,7 @@ public class SerializationHelper {
             .registerTypeAdapter(OreStack.class, new OreStackSerializer())
             .registerTypeAdapter(FluidStack.class, new FluidStackSerializer())
             .registerTypeAdapter(WrappedStack.class, new WrappedStackSerializer())
+            .registerTypeAdapter(PlayerKnowledge.class, new PlayerKnowledgeSerializer())
             .registerTypeAdapter(ENERGY_VALUE_MAP_TYPE, new EnergyValueMapSerializer())
             .create();
 

src/main/java/com/pahimar/ee3/util/serialize/PlayerKnowledgeSerializer.java

@@ -0,0 +1,30 @@
+package com.pahimar.ee3.util.serialize;
+
+import com.google.gson.*;
+import com.pahimar.ee3.knowledge.PlayerKnowledge;
+import net.minecraft.item.ItemStack;
+
+import java.lang.reflect.Type;
+
+public class PlayerKnowledgeSerializer implements JsonSerializer<PlayerKnowledge>, JsonDeserializer<PlayerKnowledge> {
+
+    @Override
+    public PlayerKnowledge deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
+        // TODO Pick up here
+        return null;
+    }
+
+    @Override
+    public JsonElement serialize(PlayerKnowledge src, Type typeOfSrc, JsonSerializationContext context) {
+
+        JsonArray jsonArray = new JsonArray();
+
+        if (src != null) {
+            for (ItemStack itemStack : src.getKnownItemStacks()) {
+                jsonArray.add(context.serialize(itemStack));
+            }
+        }
+
+        return jsonArray;
+    }
+}