From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Mon, 19 Oct 2020 15:14:01 -0500
Subject: [PATCH] Infinite fuel furnace


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 c559ec5041474e585e4d95a664c84e1fa895cf16..806277d029a1c1a2d334a05d94163415c2619b8d 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
@@ -40,6 +40,7 @@ import net.minecraft.world.level.Level;
 import net.minecraft.world.level.block.AbstractFurnaceBlock;
 import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.level.material.FluidState;
 import net.minecraft.world.phys.Vec3;
 // CraftBukkit start
 import org.bukkit.craftbukkit.block.CraftBlock;
@@ -317,6 +318,22 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
 
         ItemStack itemstack = (ItemStack) blockEntity.items.get(1);
 
+        // Purpur start
+        boolean infiniteFuel = false;
+        if (world.purpurConfig.furnaceInfiniteFuel && !blockEntity.isLit() && itemstack.isEmpty() && !blockEntity.items.get(0).isEmpty() && world.getGameTime() % 20 == 0) {
+            BlockPos position = blockEntity.getBlockPos().below();
+            BlockState blockState = world.getTypeIfLoaded(pos);
+            if (blockState != null && blockState.is(Blocks.LAVA)) {
+                FluidState fluid = state.getFluidState();
+                if (fluid != null && fluid.isSource()) {
+                    world.setBlock(pos, Blocks.AIR.defaultBlockState(), 3);
+                    itemstack = Items.LAVA_BUCKET.getDefaultInstance();
+                    infiniteFuel = true;
+                }
+            }
+        }
+        // Purpur end
+
         if (!blockEntity.isLit() && (itemstack.isEmpty() || ((ItemStack) blockEntity.items.get(0)).isEmpty())) {
             if (!blockEntity.isLit() && blockEntity.cookingProgress > 0) {
                 blockEntity.cookingProgress = Mth.clamp(blockEntity.cookingProgress - 2, 0, blockEntity.cookingTotalTime);
@@ -380,6 +397,7 @@ public abstract class AbstractFurnaceBlockEntity extends BaseContainerBlockEntit
             setChanged(world, pos, state);
         }
 
+        if (infiniteFuel) blockEntity.items.set(1, ItemStack.EMPTY); // Purpur
     }
 
     private static boolean canBurn(@Nullable Recipe<?> recipe, NonNullList<ItemStack> slots, int count) {
diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
index ac0aaf5d557e411bc29120470a80862c61c35bc5..25b3f33f487dd0cc25f9bdc335002f4601e138d2 100644
--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
@@ -398,6 +398,11 @@ public class PurpurWorldConfig {
         farmlandGetsMoistFromBelow = getBoolean("blocks.farmland.gets-moist-from-below", farmlandGetsMoistFromBelow);
     }
 
+    public boolean furnaceInfiniteFuel = false;
+    private void furnaceSettings() {
+        furnaceInfiniteFuel = getBoolean("blocks.furnace.infinite-fuel", furnaceInfiniteFuel);
+    }
+
     public boolean lavaInfinite = false;
     public int lavaInfiniteRequiredSources = 2;
     public int lavaSpeedNether = 10;