1 files changed, 36 insertions, 0 deletions
diff --git a/patches/server/0517-Cache-burn-durations.patch b/patches/server/0517-Cache-burn-durations.patch
new file mode 100644
index 0000000000..0b0a8c2b0e
--- /dev/null
+++ b/patches/server/0517-Cache-burn-durations.patch
@@ -0,0 +1,36 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: lukas <[email protected]>
+Date: Sun, 27 Dec 2020 16:47:00 +0100
+Subject: [PATCH] Cache burn durations
+
+
+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 40dc29288a13ae9c1f8b0434922fdb5c7d02daa9..5ea9a6e9fa197fd00952c5ade426d7de50497a5e 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
+@@ -133,7 +133,13 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
+         this.recipeType = recipeType; // Paper
+     }
+ 
++    private static Map<Item, Integer> cachedBurnDurations = null; // Paper - cache burn durations
+     public static Map<Item, Integer> getFuel() {
++        // Paper start - cache burn durations
++        if(cachedBurnDurations != null) {
++            return cachedBurnDurations;
++        }
++        // Paper end
+         Map<Item, Integer> map = Maps.newLinkedHashMap();
+ 
+         AbstractFurnaceBlockEntity.add(map, (ItemLike) Items.LAVA_BUCKET, 20000);
+@@ -195,7 +201,10 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
+         AbstractFurnaceBlockEntity.add(map, (ItemLike) Blocks.AZALEA, 100);
+         AbstractFurnaceBlockEntity.add(map, (ItemLike) Blocks.FLOWERING_AZALEA, 100);
+         AbstractFurnaceBlockEntity.add(map, (ItemLike) Blocks.MANGROVE_ROOTS, 300);
+-        return map;
++        // Paper start - cache burn durations
++        cachedBurnDurations = com.google.common.collect.ImmutableMap.copyOf(map);
++        return cachedBurnDurations;
++        // Paper end
+     }
+ 
+     // CraftBukkit start - add fields and methods