Fix NPE when setting cook multiplier (#5956)

build-data/paper.at

@@ -223,3 +223,5 @@ public net.minecraft.world.entity.animal.Fox setDefending(Z)V
 public net.minecraft.world.entity.animal.Fox isFaceplanted()Z
 public net.minecraft.world.entity.animal.Fox setFaceplanted(Z)V
 
+# Cook speed multipler API
+public net.minecraft.world.level.block.entity.AbstractFurnaceBlockEntity recipeType

patches/server/0270-Implement-furnace-cook-speed-multiplier-API.patch

@@ -11,7 +11,7 @@ to the nearest Integer when updating its current cook time.
 Modified by: Eric Su <ericsu@alumni.usc.edu>
 
 diff --git a/src/main/java/net/minecraft/world/level/block/entity/AbstractFurnaceBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/AbstractFurnaceBlockEntity.java
-index cfa095d39843dd4963c817b824228a4b48a8c1cd..60cbb6616851758c7b8a9c90f4bb7e169358f123 100644
+index e43fd7185b4570713d8ee2361d633c94d187fe2b..6c8518cdf768bd2b613f3f2159d977d2035921c1 100644
 --- a/src/main/java/net/minecraft/world/level/block/entity/AbstractFurnaceBlockEntity.java
 +++ b/src/main/java/net/minecraft/world/level/block/entity/AbstractFurnaceBlockEntity.java
 @@ -71,6 +71,7 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
@@ -80,7 +80,7 @@ index cfa095d39843dd4963c817b824228a4b48a8c1cd..60cbb6616851758c7b8a9c90f4bb7e16
              this.setChanged();
          }
 diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftFurnace.java b/src/main/java/org/bukkit/craftbukkit/block/CraftFurnace.java
-index 5028a6388f95a14df8d1590cddd7414d8de5bf78..a05704665f7718b189f0c60ae42c615fce408b0c 100644
+index 5028a6388f95a14df8d1590cddd7414d8de5bf78..92c156b09cc46e5d70ed7d803683787248495a62 100644
 --- a/src/main/java/org/bukkit/craftbukkit/block/CraftFurnace.java
 +++ b/src/main/java/org/bukkit/craftbukkit/block/CraftFurnace.java
 @@ -63,4 +63,20 @@ public abstract class CraftFurnace<T extends AbstractFurnaceBlockEntity> extends
@@ -100,7 +100,7 @@ index 5028a6388f95a14df8d1590cddd7414d8de5bf78..a05704665f7718b189f0c60ae42c615f
 +        com.google.common.base.Preconditions.checkArgument(multiplier <= 200, "Furnace speed multiplier cannot more than 200");
 +        T snapshot = this.getSnapshot();
 +        snapshot.cookSpeedMultiplier = multiplier;
-+        snapshot.cookingTotalTime = AbstractFurnaceBlockEntity.getTotalCookTime(this.world.getHandle(), snapshot.getCurrentRecipe().getType(), ((CraftInventoryFurnace) this.getInventory()).getInventory(), snapshot.cookSpeedMultiplier); // Update the snapshot's current total cook time to scale with the newly set multiplier
++        snapshot.cookingTotalTime = AbstractFurnaceBlockEntity.getTotalCookTime(this.world.getHandle(), snapshot.recipeType, snapshot, snapshot.cookSpeedMultiplier); // Update the snapshot's current total cook time to scale with the newly set multiplier
 +    }
 +    // Paper end
  }