Apply furnace cook speed multiplier through event (#6378)

Previously the upstream FurnaceStartSmeltEvent would default to the
recipes cooking time, ignoring any modifications from the furnace speed
multiplier.
While this works correctly for upstream, paper introduces the speed
multiplier API, which allows a different cook time from the one provided
by the recipe.

This commit now passes the modified cooktime to the furnace start smelt
event explicitly, instead of allowing the event to default to the
recipes cooking time, thus ensuring that the speed modifier is
respected.

Resolves: #6376

patches/api/Implement-furnace-cook-speed-multiplier-API.patch

@@ -36,3 +36,27 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
      @NotNull
      @Override
      public FurnaceInventory getInventory();
+diff --git a/src/main/java/org/bukkit/event/inventory/FurnaceStartSmeltEvent.java b/src/main/java/org/bukkit/event/inventory/FurnaceStartSmeltEvent.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/event/inventory/FurnaceStartSmeltEvent.java
++++ b/src/main/java/org/bukkit/event/inventory/FurnaceStartSmeltEvent.java
+@@ -0,0 +0,0 @@ public class FurnaceStartSmeltEvent extends BlockEvent {
+     private final CookingRecipe<?> recipe;
+     private int totalCookTime;
+ 
++    @Deprecated // Paper - furnace cook speed multiplier
+     public FurnaceStartSmeltEvent(@NotNull final Block furnace, @NotNull ItemStack source, @NotNull final CookingRecipe<?> recipe) {
++        // Paper start - furnace cook speed multiplier
++        this(furnace, source, recipe, recipe.getCookingTime());
++    }
++
++    public FurnaceStartSmeltEvent(@NotNull final Block furnace, @NotNull ItemStack source, @NotNull CookingRecipe<?> recipe, int cookingTime) {
++        // Paper end
+         super(furnace);
+         this.source = source;
+         this.recipe = recipe;
+-        this.totalCookTime = recipe.getCookingTime();
++        this.totalCookTime = cookingTime; // Paper - furnace cook speed multiplier
+     }
+ 
+     /**

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

@@ -42,6 +42,15 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
          ContainerHelper.saveAllItems(nbt, this.items);
          CompoundTag nbttagcompound1 = new CompoundTag();
  
+@@ -0,0 +0,0 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
+                     CraftItemStack source = CraftItemStack.asCraftMirror(blockEntity.items.get(0));
+                     CookingRecipe<?> recipe = (CookingRecipe<?>) irecipe.toBukkitRecipe();
+ 
+-                    FurnaceStartSmeltEvent event = new FurnaceStartSmeltEvent(CraftBlock.at(world, pos), source, recipe);
++                    FurnaceStartSmeltEvent event = new FurnaceStartSmeltEvent(CraftBlock.at(world, pos), source, recipe, AbstractFurnaceBlockEntity.getTotalCookTime(world, blockEntity.recipeType, blockEntity, blockEntity.cookSpeedMultiplier)); // Paper - cook speed multiplier API
+                     world.getCraftServer().getPluginManager().callEvent(event);
+ 
+                     blockEntity.cookingTotalTime = event.getTotalCookTime();
 @@ -0,0 +0,0 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
                  // CraftBukkit end