From e166e81a0f5fe0b25ade62b795052d99c0dc5744 Mon Sep 17 00:00:00 2001
From: Colin McDonald <macguy8.main@gmail.com>
Date: Sat, 4 Jul 2015 00:50:16 -0400
Subject: [PATCH] Add potion limiter


diff --git a/src/main/java/io/kohi/kspigot/potion/PotionMatcher.java b/src/main/java/io/kohi/kspigot/potion/PotionMatcher.java
new file mode 100644
index 000000000..db664e3ca
--- /dev/null
+++ b/src/main/java/io/kohi/kspigot/potion/PotionMatcher.java
@@ -0,0 +1,60 @@
+package io.kohi.kspigot.potion;
+
+import java.util.Map;
+import org.bukkit.potion.Potion;
+import org.bukkit.potion.PotionType;
+
+public class PotionMatcher
+{
+    private PotionType type;
+    private Integer level;
+    private Boolean extended;
+    private Boolean splash;
+
+    public PotionMatcher(Map conf)
+    {
+        if (conf.containsKey("type"))
+        {
+            try
+            {
+                type = PotionType.valueOf((String) conf.get("type"));
+            }
+            catch (IllegalArgumentException ex)
+            {
+            }
+        }
+        if (conf.containsKey("level"))
+        {
+            level = (Integer) conf.get("level");
+        }
+        if (conf.containsKey("extended"))
+        {
+            extended = (Boolean) conf.get("extended");
+        }
+        if (conf.containsKey("splash"))
+        {
+            splash = (Boolean) conf.get("splash");
+        }
+    }
+
+    public boolean matches(int damage)
+    {
+        if (type != null && type.getDamageValue() != (damage & 15))
+        {
+            return false;
+        }
+        if (level != null && level != ((damage >> 5) & 1) + 1)
+        {
+            return false;
+        }
+        if (extended != null && extended != (((damage >> 6) & 1) == 1))
+        {
+            return false;
+        }
+        if (splash != null && splash != (((damage >> 14) & 1) == 1))
+        {
+            return false;
+        }
+        return true;
+    }
+}
diff --git a/src/main/java/io/kohi/kspigot/potion/PotionsConfig.java b/src/main/java/io/kohi/kspigot/potion/PotionsConfig.java
new file mode 100644
index 000000000..c6a9abb4a
--- /dev/null
+++ b/src/main/java/io/kohi/kspigot/potion/PotionsConfig.java
@@ -0,0 +1,49 @@
+package io.kohi.kspigot.potion;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import org.bukkit.configuration.file.YamlConfiguration;
+
+public class PotionsConfig
+{
+    private static final YamlConfiguration conf = YamlConfiguration.loadConfiguration(new File("potions.yml"));
+    private static final List<PotionMatcher> disableBrewing = new ArrayList<PotionMatcher>();
+    private static final Map<Integer, Boolean> disableBrewingCache = new HashMap<Integer, Boolean>();
+
+    static
+    {
+        List<?> disable = conf.getList("disable-brewing");
+        if (disable != null)
+        {
+            for (Object obj : disable)
+            {
+                if (obj instanceof Map)
+                {
+                    disableBrewing.add(new PotionMatcher((Map) obj));
+                }
+            }
+        }
+    }
+
+    public static boolean isBrewingDisabled(int damage)
+    {
+        Boolean cached = disableBrewingCache.get(damage);
+        if (cached != null)
+        {
+            return cached;
+        }
+        for (PotionMatcher potion : disableBrewing)
+        {
+            if (potion.matches(damage))
+            {
+                disableBrewingCache.put(damage, true);
+                return true;
+            }
+        }
+        disableBrewingCache.put(damage, false);
+        return false;
+    }
+}
diff --git a/src/main/java/net/minecraft/server/TileEntityBrewingStand.java b/src/main/java/net/minecraft/server/TileEntityBrewingStand.java
index c0ca4a49d..b9acbf9d8 100644
--- a/src/main/java/net/minecraft/server/TileEntityBrewingStand.java
+++ b/src/main/java/net/minecraft/server/TileEntityBrewingStand.java
@@ -6,6 +6,7 @@ import java.util.List;
 import org.bukkit.craftbukkit.entity.CraftHumanEntity;
 import org.bukkit.entity.HumanEntity;
 import org.bukkit.event.inventory.BrewEvent;
+import io.kohi.kspigot.potion.PotionsConfig;
 // CraftBukkit end
 
 public class TileEntityBrewingStand extends TileEntity implements IWorldInventory {
@@ -113,6 +114,10 @@ public class TileEntityBrewingStand extends TileEntity implements IWorldInventor
                         int j = this.items[i].getData();
                         int k = this.c(j, itemstack);
 
+                        if (k > 0 && PotionsConfig.isBrewingDisabled(k)) {
+                            continue;
+                        }
+
                         if (!ItemPotion.g(j) && ItemPotion.g(k)) {
                             flag = true;
                             break;
@@ -156,6 +161,10 @@ public class TileEntityBrewingStand extends TileEntity implements IWorldInventor
                     List list = Items.POTION.c(j);
                     List list1 = Items.POTION.c(k);
 
+                    if (k > 0 && PotionsConfig.isBrewingDisabled(k)) {
+                        continue;
+                    }
+
                     if ((j <= 0 || list != list1) && (list == null || !list.equals(list1) && list1 != null)) {
                         if (j != k) {
                             this.items[i].setData(k);
-- 
2.13.3