From 26a009422e676bf0159b5607141024cb470a9720 Mon Sep 17 00:00:00 2001
From: BillyGalbreath <blake.galbreath@gmail.com>
Date: Tue, 23 Mar 2021 21:15:38 -0500
Subject: [PATCH] Break individual slabs when sneaking (closes #218)

---
 ...Break-individual-slabs-when-sneaking.patch | 74 +++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 patches/server/0191-Break-individual-slabs-when-sneaking.patch

diff --git a/patches/server/0191-Break-individual-slabs-when-sneaking.patch b/patches/server/0191-Break-individual-slabs-when-sneaking.patch
new file mode 100644
index 000000000..9c85ffc38
--- /dev/null
+++ b/patches/server/0191-Break-individual-slabs-when-sneaking.patch
@@ -0,0 +1,74 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <blake.galbreath@gmail.com>
+Date: Tue, 23 Mar 2021 19:38:53 -0500
+Subject: [PATCH] Break individual slabs when sneaking
+
+
+diff --git a/src/main/java/net/minecraft/server/level/PlayerInteractManager.java b/src/main/java/net/minecraft/server/level/PlayerInteractManager.java
+index e47a743fd3adc62aa47beec722f49eeaded246bc..5fa689a799f0016fb92fdb5134e13d512d3c63ff 100644
+--- a/src/main/java/net/minecraft/server/level/PlayerInteractManager.java
++++ b/src/main/java/net/minecraft/server/level/PlayerInteractManager.java
+@@ -409,6 +409,8 @@ public class PlayerInteractManager {
+                 }
+                 return false;
+             }
++
++            if (this.player.world.purpurConfig.slabHalfBreak && iblockdata.getBlock() instanceof net.minecraft.world.level.block.BlockStepAbstract && ((net.minecraft.world.level.block.BlockStepAbstract) iblockdata.getBlock()).halfBreak(iblockdata, blockposition, this.player)) return true; // Purpur
+         }
+         // CraftBukkit end
+ 
+diff --git a/src/main/java/net/minecraft/world/level/block/BlockStepAbstract.java b/src/main/java/net/minecraft/world/level/block/BlockStepAbstract.java
+index 12c0fa5072755fd2a4f575b0cc5e4222617490ce..94965b216d50b29b95f09fa9019c177b9c099e14 100644
+--- a/src/main/java/net/minecraft/world/level/block/BlockStepAbstract.java
++++ b/src/main/java/net/minecraft/world/level/block/BlockStepAbstract.java
+@@ -27,7 +27,7 @@ import net.minecraft.world.phys.shapes.VoxelShapes;
+ 
+ public class BlockStepAbstract extends Block implements IBlockWaterlogged {
+ 
+-    public static final BlockStateEnum<BlockPropertySlabType> a = BlockProperties.aK;
++    public static final BlockStateEnum<BlockPropertySlabType> a = BlockProperties.aK; public static BlockStateEnum<BlockPropertySlabType> slabType() { return a; } // Purpur - OBFHELPER
+     public static final BlockStateBoolean b = BlockProperties.C;
+     protected static final VoxelShape c = Block.a(0.0D, 0.0D, 0.0D, 16.0D, 8.0D, 16.0D);
+     protected static final VoxelShape d = Block.a(0.0D, 8.0D, 0.0D, 16.0D, 16.0D, 16.0D);
+@@ -134,4 +134,25 @@ public class BlockStepAbstract extends Block implements IBlockWaterlogged {
+                 return false;
+         }
+     }
++
++    // Purpur start
++    public boolean halfBreak(IBlockData iblockdata, BlockPosition pos, net.minecraft.server.level.EntityPlayer player) {
++        if (iblockdata.get(BlockStepAbstract.slabType()) != BlockPropertySlabType.DOUBLE) {
++            return false;
++        }
++        net.minecraft.world.phys.MovingObjectPosition result = player.getRayTrace(16);
++        if (result == null) {
++            return false;
++        }
++        double hitY = result.getPos().getY();
++        int blockY = org.bukkit.util.NumberConversions.floor(hitY);
++        player.world.setTypeAndData(pos, iblockdata.set(BlockStepAbstract.slabType(), (hitY - blockY > 0.5 || blockY - pos.getY() == 1) ? BlockPropertySlabType.BOTTOM : BlockPropertySlabType.TOP), 3);
++        if (!player.abilities.canInstantlyBuild) {
++            net.minecraft.world.entity.item.EntityItem item = new net.minecraft.world.entity.item.EntityItem(player.world, pos.getX(), pos.getY(), pos.getZ(), new ItemStack(getItem()));
++            item.defaultPickupDelay();
++            player.world.addEntity(item);
++        }
++        return true;
++    }
++    // Purpur end
+ }
+diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+index b0f6d5dae50f5689ef41b766a590ca5a26834fc2..62f52be341a0ddec165bb9b24e2f4ed97e145104 100644
+--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
++++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+@@ -517,6 +517,11 @@ public class PurpurWorldConfig {
+         signRightClickEdit = getBoolean("blocks.sign.right-click-edit", signRightClickEdit);
+     }
+ 
++    public boolean slabHalfBreak = false;
++    private void slabSettings() {
++        slabHalfBreak = getBoolean("blocks.slab.break-individual-slabs-when-sneaking", slabHalfBreak);
++    }
++
+     public boolean spawnerDeactivateByRedstone = false;
+     private void spawnerSettings() {
+         spawnerDeactivateByRedstone = getBoolean("blocks.spawner.deactivate-by-redstone", spawnerDeactivateByRedstone);