Paper/patches/server/0246-Implement-furnace-cook-speed-multiplier-API.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Tassu <git@tassu.me>
Date: Thu, 13 Sep 2018 08:45:21 +0300
Subject: [PATCH] Implement furnace cook speed multiplier API

Fixed an issue where a furnace's cook-speed multiplier rounds down
to the nearest Integer when updating its current cook time.

== AT ==
public net.minecraft.world.level.block.entity.AbstractFurnaceBlockEntity getTotalCookTime(Lnet/minecraft/server/level/ServerLevel;Lnet/minecraft/world/level/block/entity/AbstractFurnaceBlockEntity;)I

Co-authored-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 119ea31f6e15185b6d6171053f790e39c24f6823..187f380eae3948eb5e37e8703db6ea785aaf833d 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
@@ -74,11 +74,13 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
     protected NonNullList<ItemStack> items;
     public int litTime;
     int litDuration;
+    public double cookSpeedMultiplier = 1.0; // Paper - cook speed multiplier API
     public int cookingProgress;
     public int cookingTotalTime;
     protected final ContainerData dataAccess;
     public final Reference2IntOpenHashMap<ResourceKey<Recipe<?>>> recipesUsed;
     private final RecipeManager.CachedCheck<SingleRecipeInput, ? extends AbstractCookingRecipe> quickCheck;
+    public final RecipeType<? extends AbstractCookingRecipe> recipeType; // Paper - cook speed multiplier API
 
     protected AbstractFurnaceBlockEntity(BlockEntityType<?> blockEntityType, BlockPos pos, BlockState state, RecipeType<? extends AbstractCookingRecipe> recipeType) {
         super(blockEntityType, pos, state);
@@ -126,6 +128,7 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
         };
         this.recipesUsed = new Reference2IntOpenHashMap();
         this.quickCheck = RecipeManager.createCheck((RecipeType<AbstractCookingRecipe>) recipeType); // CraftBukkit - decompile error // Eclipse fail
+        this.recipeType = recipeType; // Paper - cook speed multiplier API
     }
 
     // CraftBukkit start - add fields and methods
@@ -180,6 +183,11 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
             this.recipesUsed.put(ResourceKey.create(Registries.RECIPE, ResourceLocation.parse(s)), nbttagcompound1.getInt(s));
         }
 
+        // Paper start - cook speed multiplier API
+        if (nbt.contains("Paper.CookSpeedMultiplier")) {
+            this.cookSpeedMultiplier = nbt.getDouble("Paper.CookSpeedMultiplier");
+        }
+        // Paper end - cook speed multiplier API
     }
 
     @Override
@@ -188,6 +196,7 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
         nbt.putShort("BurnTime", (short) this.litTime);
         nbt.putShort("CookTime", (short) this.cookingProgress);
         nbt.putShort("CookTimeTotal", (short) this.cookingTotalTime);
+        nbt.putDouble("Paper.CookSpeedMultiplier", this.cookSpeedMultiplier); // Paper - cook speed multiplier API
         ContainerHelper.saveAllItems(nbt, this.items, registries);
         CompoundTag nbttagcompound1 = new CompoundTag();
 
@@ -263,7 +272,7 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
                     CraftItemStack source = CraftItemStack.asCraftMirror(blockEntity.items.get(0));
                     CookingRecipe<?> recipe = (CookingRecipe<?>) recipeholder.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, blockEntity.recipeType, blockEntity.cookSpeedMultiplier)); // Paper - cook speed multiplier API
                     world.getCraftServer().getPluginManager().callEvent(event);
 
                     blockEntity.cookingTotalTime = event.getTotalCookTime();
@@ -271,9 +280,9 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
                 // CraftBukkit end
 
                 ++blockEntity.cookingProgress;
-                if (blockEntity.cookingProgress == blockEntity.cookingTotalTime) {
+                if (blockEntity.cookingProgress >= blockEntity.cookingTotalTime) { // Paper - cook speed multiplier API
                     blockEntity.cookingProgress = 0;
-                    blockEntity.cookingTotalTime = AbstractFurnaceBlockEntity.getTotalCookTime(world, blockEntity);
+                    blockEntity.cookingTotalTime = AbstractFurnaceBlockEntity.getTotalCookTime(world, blockEntity, blockEntity.recipeType, blockEntity.cookSpeedMultiplier); // Paper - cook speed multiplier API
                     if (AbstractFurnaceBlockEntity.burn(blockEntity.level, blockEntity.worldPosition, world.registryAccess(), recipeholder, singlerecipeinput, blockEntity.items, i)) { // CraftBukkit
                         blockEntity.setRecipeUsed(recipeholder);
                     }
@@ -367,13 +376,14 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
         return fuelRegistry.burnDuration(stack);
     }
 
-    public static int getTotalCookTime(ServerLevel world, AbstractFurnaceBlockEntity furnace) {
-        if (world == null) return 200; // CraftBukkit - SPIGOT-4302
+    public static int getTotalCookTime(@Nullable ServerLevel world, AbstractFurnaceBlockEntity furnace, RecipeType<? extends AbstractCookingRecipe> recipeType, double cookSpeedMultiplier) { // Paper - cook speed multiplier API
         SingleRecipeInput singlerecipeinput = new SingleRecipeInput(furnace.getItem(0));
 
-        return (Integer) furnace.quickCheck.getRecipeFor(singlerecipeinput, world).map((recipeholder) -> {
-            return ((AbstractCookingRecipe) recipeholder.value()).cookingTime();
-        }).orElse(200);
+        // Paper start - cook speed multiplier API
+        /* Scale the recipe's cooking time to the current cookSpeedMultiplier */
+        int cookTime = world != null ? furnace.quickCheck.getRecipeFor(singlerecipeinput, world).map(holder -> holder.value().cookingTime()).orElse(200) : (net.minecraft.server.MinecraftServer.getServer().getRecipeManager().getRecipeFor(recipeType, singlerecipeinput, world /* passing a null level here is safe. world is only used for map extending recipes which won't happen here */).map(holder -> holder.value().cookingTime()).orElse(200));
+        return (int) Math.ceil (cookTime / cookSpeedMultiplier);
+        // Paper end - cook speed multiplier API
     }
 
     @Override
@@ -419,12 +429,11 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
             if (world instanceof ServerLevel) {
                 ServerLevel worldserver = (ServerLevel) world;
 
-                this.cookingTotalTime = AbstractFurnaceBlockEntity.getTotalCookTime(worldserver, this);
+                this.cookingTotalTime = AbstractFurnaceBlockEntity.getTotalCookTime(worldserver, this, this.recipeType, this.cookSpeedMultiplier); // Paper - cook speed multiplier API
                 this.cookingProgress = 0;
                 this.setChanged();
             }
         }
-
     }
 
     @Override
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftFurnace.java b/src/main/java/org/bukkit/craftbukkit/block/CraftFurnace.java
index 7ed43bc29a4bc0f6db2cabd3cd4c8489ed81ee81..7b5f35779ac63b5f9b3a88cc4dcde38147fea2b7 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftFurnace.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftFurnace.java
@@ -88,4 +88,20 @@ public abstract class CraftFurnace<T extends AbstractFurnaceBlockEntity> extends
 
     @Override
     public abstract CraftFurnace<T> copy(Location location);
+
+    // Paper start - cook speed multiplier API
+    @Override
+    public double getCookSpeedMultiplier() {
+        return this.getSnapshot().cookSpeedMultiplier;
+    }
+
+    @Override
+    public void setCookSpeedMultiplier(double multiplier) {
+        com.google.common.base.Preconditions.checkArgument(multiplier >= 0, "Furnace speed multiplier cannot be negative");
+        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.isPlaced() ? this.world.getHandle() : null, snapshot, snapshot.recipeType, snapshot.cookSpeedMultiplier); // Update the snapshot's current total cook time to scale with the newly set multiplier
+    }
+    // Paper end
 }