From 15180e406b561528b8e09628af6f0112d2a21be2 Mon Sep 17 00:00:00 2001
From: pahimar <pahimar@gmail.com>
Date: Thu, 7 May 2015 16:18:12 -0400
Subject: [PATCH] Prevent damaged itemstacks from being learnable, and add a
 tooltip in the Research Station GUI to tell if you already know how to
 transmute an itemstack

---
 .../ee3/client/handler/ItemTooltipEventHandler.java    | 10 ++++++++++
 .../com/pahimar/ee3/knowledge/AbilityRegistry.java     | 10 +++++++++-
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/pahimar/ee3/client/handler/ItemTooltipEventHandler.java b/src/main/java/com/pahimar/ee3/client/handler/ItemTooltipEventHandler.java
index e25132b0..33d7459f 100644
--- a/src/main/java/com/pahimar/ee3/client/handler/ItemTooltipEventHandler.java
+++ b/src/main/java/com/pahimar/ee3/client/handler/ItemTooltipEventHandler.java
@@ -2,8 +2,10 @@ package com.pahimar.ee3.client.handler;
 
 import com.pahimar.ee3.api.exchange.EnergyValue;
 import com.pahimar.ee3.api.exchange.EnergyValueRegistryProxy;
+import com.pahimar.ee3.api.knowledge.TransmutationKnowledgeRegistryProxy;
 import com.pahimar.ee3.exchange.WrappedStack;
 import com.pahimar.ee3.inventory.ContainerAlchemicalTome;
+import com.pahimar.ee3.inventory.ContainerResearchStation;
 import com.pahimar.ee3.inventory.ContainerTransmutationTablet;
 import com.pahimar.ee3.reference.Messages;
 import com.pahimar.ee3.util.IOwnable;
@@ -70,6 +72,14 @@ public class ItemTooltipEventHandler
             }
         }
 
+        if (((Keyboard.isKeyDown(Keyboard.KEY_LSHIFT) || Keyboard.isKeyDown(Keyboard.KEY_RSHIFT)) && (event.entityPlayer != null && event.entityPlayer.openContainer instanceof ContainerResearchStation)))
+        {
+            if (TransmutationKnowledgeRegistryProxy.doesPlayerKnow(event.entityPlayer, event.itemStack))
+            {
+                event.toolTip.add("You know how to transmute this"); // TODO Localize with better phrasing
+            }
+        }
+
         if (event.itemStack.getItem() instanceof IOwnable)
         {
             UUID playerUUID = ItemHelper.getOwnerUUID(event.itemStack);
diff --git a/src/main/java/com/pahimar/ee3/knowledge/AbilityRegistry.java b/src/main/java/com/pahimar/ee3/knowledge/AbilityRegistry.java
index 1017fc82..3ea9a774 100644
--- a/src/main/java/com/pahimar/ee3/knowledge/AbilityRegistry.java
+++ b/src/main/java/com/pahimar/ee3/knowledge/AbilityRegistry.java
@@ -93,7 +93,15 @@ public class AbilityRegistry implements JsonSerializer<AbilityRegistry>, JsonDes
         if (WrappedStack.canBeWrapped(object))
         {
             WrappedStack wrappedObject = WrappedStack.wrap(object);
-            return !notLearnableSet.contains(wrappedObject) && EnergyValueRegistry.getInstance().hasEnergyValue(wrappedObject);
+
+            if (object instanceof ItemStack && ((ItemStack) object).isItemDamaged())
+            {
+                return false;
+            }
+            else
+            {
+                return !notLearnableSet.contains(wrappedObject) && EnergyValueRegistry.getInstance().hasEnergyValue(wrappedObject);
+            }
         }
 
         return false;