Expose isFuel and canSmelt methods to FurnaceInventory (#7181)

patches/api/0351-Expose-isFuel-and-canSmelt-methods-to-FurnaceInvento.patch

@@ -0,0 +1,35 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <blake.galbreath@gmail.com>
+Date: Thu, 23 Dec 2021 15:32:40 -0600
+Subject: [PATCH] Expose isFuel and canSmelt methods to FurnaceInventory
+
+
+diff --git a/src/main/java/org/bukkit/inventory/FurnaceInventory.java b/src/main/java/org/bukkit/inventory/FurnaceInventory.java
+index 3f46259c1e0f82941ffc3038d1b51be199114abd..b9d4f05980d924a4831b1d213d4963199f5b9a5d 100644
+--- a/src/main/java/org/bukkit/inventory/FurnaceInventory.java
++++ b/src/main/java/org/bukkit/inventory/FurnaceInventory.java
+@@ -53,6 +53,24 @@ public interface FurnaceInventory extends Inventory {
+      */
+     void setSmelting(@Nullable ItemStack stack);
+ 
++    // Paper start
++    /**
++     * Check if an item can be used as a fuel source in this furnace container
++     *
++     * @param item Item to check
++     * @return True if a valid fuel source
++     */
++    public boolean isFuel(@Nullable ItemStack item);
++
++    /**
++     * Check if an item can be smelted in this furnace container
++     *
++     * @param item Item to check
++     * @return True if can be smelt
++     */
++    public boolean canSmelt(@Nullable ItemStack item);
++    // Paper end
++
+     @Override
+     @Nullable
+     Furnace getHolder();

patches/server/0839-Expose-isFuel-and-canSmelt-methods-to-FurnaceInvento.patch

@@ -0,0 +1,31 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <blake.galbreath@gmail.com>
+Date: Thu, 23 Dec 2021 15:32:50 -0600
+Subject: [PATCH] Expose isFuel and canSmelt methods to FurnaceInventory
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryFurnace.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryFurnace.java
+index 05c29a788c96282fc18066ae253cf0b5be37e95c..e8e53d3c7d8b1bba7d77dc0c76d242eb177ad851 100644
+--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryFurnace.java
++++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryFurnace.java
+@@ -40,6 +40,20 @@ public class CraftInventoryFurnace extends CraftInventory implements FurnaceInve
+         setItem(0, stack);
+     }
+ 
++    // Paper start
++    @Override
++    public boolean isFuel(ItemStack stack) {
++        return stack != null && !stack.getType().isEmpty() && AbstractFurnaceBlockEntity.isFuel(CraftItemStack.asNMSCopy(stack));
++    }
++
++    @Override
++    public boolean canSmelt(ItemStack stack) {
++        // data packs are always loaded in the main world
++        net.minecraft.server.level.ServerLevel world = ((org.bukkit.craftbukkit.CraftWorld) org.bukkit.Bukkit.getWorlds().get(0)).getHandle();
++        return stack != null && !stack.getType().isEmpty() && world.getRecipeManager().getRecipeFor(((AbstractFurnaceBlockEntity) this.inventory).recipeType, new net.minecraft.world.SimpleContainer(CraftItemStack.asNMSCopy(stack)), world).isPresent();
++    }
++    // Paper end
++
+     @Override
+     public Furnace getHolder() {
+         return (Furnace) inventory.getOwner();