RecipeUtil, isPotion and Qualsish.

src/com/massivecraft/massivecore/util/InventoryUtil.java

@@ -880,6 +880,19 @@ public class InventoryUtil
 		return true;
 	}
 	
+	public static boolean isPotion(ItemStack itemStack)
+	{
+		if (isNothing(itemStack)) return false;
+		Material material = itemStack.getType();
+		return isPotion(material);
+	}
+	
+	public static boolean isPotion(Material material)
+	{
+		if (material == null) return false;
+		return material.name().contains("POTION");
+	}
+	
 	// -------------------------------------------- //
 	// CLONE ITEMSTACKS/INVENTORY
 	// -------------------------------------------- //

src/com/massivecraft/massivecore/util/MUtil.java

@@ -1669,6 +1669,7 @@ public class MUtil
 	{
 		if (object1 == null) return object2 == null;
 		if (object2 == null) return false;
+		
 		return object1.equals(object2);
 	}
 	
@@ -1691,6 +1692,20 @@ public class MUtil
 		return true;
 	}
 	
+	// -------------------------------------------- //
+	// EQUALSISH
+	// -------------------------------------------- //
+	
+	public static final double EQUALSISH_EPSILON = 0.0001;
+	
+	public static boolean equalsish(Number number1, Number number2)
+	{
+		if (number1 == null) return number2 == null;
+		if (number2 == null) return false;
+		
+		return Math.abs(number1.doubleValue() - number2.doubleValue()) < EQUALSISH_EPSILON;
+	}
+	
 	// -------------------------------------------- //
 	// SORTING
 	// -------------------------------------------- //

src/com/massivecraft/massivecore/util/RecipeUtil.java

@@ -0,0 +1,119 @@
+package com.massivecraft.massivecore.util;
+
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.ShapelessRecipe;
+import org.bukkit.inventory.meta.PotionMeta;
+import org.bukkit.potion.PotionData;
+import org.bukkit.potion.PotionType;
+
+// NOTE: This utility targets 1.9 and will crash on older servers.
+public class RecipeUtil
+{	
+	// ------------------------------------------- //
+	// POTION
+	// -------------------------------------------- //
+	
+	public static ItemStack createPotionItemStack(PotionType type, Material material, boolean upgraded, boolean extended, int amount)
+	{
+		ItemStack ret = new ItemStack(material, amount);
+		PotionMeta meta = (PotionMeta)ret.getItemMeta();
+		PotionData data = new PotionData(type, extended, upgraded);
+		meta.setBasePotionData(data);
+		ret.setItemMeta(meta);
+		return ret;
+	}
+	
+	public static ShapelessRecipe createPotion(PotionType type, Material material, boolean upgraded, boolean extended, Object... objects)
+	{
+		// When brewing you actually get 3 potions.
+		final int amount = 3;
+		ItemStack item = createPotionItemStack(type, material, upgraded, extended, amount);
+		return createShapeless(item, objects);
+	}
+	
+	public static ShapelessRecipe addPotion(PotionType type, Material material, boolean upgraded, boolean extended, Object... objects)
+	{
+		ShapelessRecipe recipe = createPotion(type, material, upgraded, extended, objects);
+		Bukkit.getServer().addRecipe(recipe);
+		return recipe;
+	}
+	
+	// ------------------------------------------- //
+	// CIRCULAR
+	// -------------------------------------------- //
+	
+	public static void addCircular(Material material, int maxData)
+	{
+		ItemStack[] items = new ItemStack[maxData];
+		for (int i = 0; i < maxData; i++)
+		{
+			items[i] = new ItemStack(material, 1, (short) i);
+		}
+		addCircular(items);
+	}
+	
+	public static void addCircular(ItemStack... items)
+	{
+		for (int i = 0; i < items.length; i++)
+		{
+			int next = (i+1) % items.length;
+			ItemStack item = items[i];
+			addShapeless(items[next], item.getDurability(), item.getAmount(), item.getType());
+		}
+	}
+	
+	// ------------------------------------------- //
+	// SHAPELESS
+	// -------------------------------------------- //
+	
+	@SuppressWarnings("deprecation")
+	public static ShapelessRecipe createShapeless(ItemStack result, Object... objects)
+	{
+		ShapelessRecipe recipe = new ShapelessRecipe(result);
+		
+		int quantity = 1;
+		int data = 0;
+		Material material = null;
+		
+		for (Object object : objects)
+		{
+			if (object instanceof Number)
+			{
+				if (object instanceof Integer)
+				{
+					quantity = ((Integer)object).intValue();
+				}
+				else
+				{
+					data = ((Number)object).intValue();
+				}
+			}
+			else if (object instanceof Material)
+			{
+				material = (Material)object;
+				
+				recipe.addIngredient(quantity, material, data);
+				
+				quantity = 1;
+				data = 0;
+				material = null;
+			}
+			else
+			{
+				throw new IllegalArgumentException(String.valueOf(object));
+			}
+		}
+		
+		return recipe;
+	}
+	
+	public static ShapelessRecipe addShapeless(ItemStack result, Object... objects)
+	{
+		ShapelessRecipe recipe = createShapeless(result, objects);
+		Bukkit.getServer().addRecipe(recipe);
+		return recipe;
+	}
+	
+}