Paper/patches/server/0896-Add-exploded-block-state-to-BlockExplodeEvent-and-En.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Fri, 22 Oct 2021 16:25:07 -0700
Subject: [PATCH] Add exploded block state to BlockExplodeEvent and
 EntityDamageByBlockEvent


diff --git a/src/main/java/net/minecraft/world/damagesource/DamageSource.java b/src/main/java/net/minecraft/world/damagesource/DamageSource.java
index 1a0f86b5a632469942e33c237c247d2d1dee4a3d..25a5a3b949a0eb632611355e74ccd4865be108ca 100644
--- a/src/main/java/net/minecraft/world/damagesource/DamageSource.java
+++ b/src/main/java/net/minecraft/world/damagesource/DamageSource.java
@@ -52,6 +52,7 @@ public class DamageSource {
         return this;
     }
     // CraftBukkit end
+    public @Nullable org.bukkit.block.BlockState explodedBlockState; // Paper - add exploded state
 
     public String toString() {
         return "DamageSource (" + this.type().msgId() + ")";
diff --git a/src/main/java/net/minecraft/world/damagesource/DamageSources.java b/src/main/java/net/minecraft/world/damagesource/DamageSources.java
index 8bde8c581796ed11809b80b9a30a33df86116745..4604f8b38460e9113e966889a679d4547f24aff6 100644
--- a/src/main/java/net/minecraft/world/damagesource/DamageSources.java
+++ b/src/main/java/net/minecraft/world/damagesource/DamageSources.java
@@ -247,8 +247,17 @@ public class DamageSources {
         return this.source(DamageTypes.SONIC_BOOM, attacker);
     }
 
+    @Deprecated @io.papermc.paper.annotation.DoNotUse // Paper
     public DamageSource badRespawnPointExplosion(Vec3 position) {
-        return new DamageSource(this.damageTypes.getHolderOrThrow(DamageTypes.BAD_RESPAWN_POINT), position);
+        // Paper start
+        return this.badRespawnPointExplosion(position, null);
+    }
+
+    public DamageSource badRespawnPointExplosion(Vec3 position, @Nullable org.bukkit.block.BlockState explodedBlockState) {
+        DamageSource source = new DamageSource(this.damageTypes.getHolderOrThrow(DamageTypes.BAD_RESPAWN_POINT), position);
+        source.explodedBlockState = explodedBlockState;
+        return source;
+        // Paper end
     }
 
     public DamageSource outOfBorder() {
diff --git a/src/main/java/net/minecraft/world/level/Explosion.java b/src/main/java/net/minecraft/world/level/Explosion.java
index 5a2e322d349340fa58f133c2034765f90319b2be..dbe679bb81a903668262cdf629469e971b49e088 100644
--- a/src/main/java/net/minecraft/world/level/Explosion.java
+++ b/src/main/java/net/minecraft/world/level/Explosion.java
@@ -368,7 +368,7 @@ public class Explosion {
                 bukkitBlocks = event.blockList();
                 this.yield = event.getYield();
             } else {
-                BlockExplodeEvent event = new BlockExplodeEvent(location.getBlock(), blockList, this.yield);
+                BlockExplodeEvent event = new BlockExplodeEvent(location.getBlock(), blockList, this.yield, this.damageSource.explodedBlockState); // Paper - exploded block state
                 this.level.getCraftServer().getPluginManager().callEvent(event);
                 this.wasCanceled = event.isCancelled();
                 bukkitBlocks = event.blockList();
diff --git a/src/main/java/net/minecraft/world/level/block/BedBlock.java b/src/main/java/net/minecraft/world/level/block/BedBlock.java
index 0e63fa3b49b1a275254cf108a51ab18e816aad49..2deb0d861a5f66d177068f37dd56da5cf692633e 100644
--- a/src/main/java/net/minecraft/world/level/block/BedBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/BedBlock.java
@@ -96,6 +96,7 @@ public class BedBlock extends HorizontalDirectionalBlock implements EntityBlock
 
             // CraftBukkit - moved world and biome check into EntityHuman
             if (false && !BedBlock.canSetSpawn(world)) {
+                final org.bukkit.block.BlockState explodedBlockState = org.bukkit.craftbukkit.block.CraftBlockStates.getUnplacedBlockState(world, pos, state); // Paper - exploded block state (this won't be called due to the false, but it's good for reference)
                 world.removeBlock(pos, false);
                 BlockPos blockposition1 = pos.relative(((Direction) state.getValue(BedBlock.FACING)).getOpposite());
 
@@ -105,7 +106,7 @@ public class BedBlock extends HorizontalDirectionalBlock implements EntityBlock
 
                 Vec3 vec3d = pos.getCenter();
 
-                world.explode((Entity) null, world.damageSources().badRespawnPointExplosion(vec3d), (ExplosionDamageCalculator) null, vec3d, 5.0F, true, Level.ExplosionInteraction.BLOCK);
+                world.explode((Entity) null, world.damageSources().badRespawnPointExplosion(vec3d, explodedBlockState), (ExplosionDamageCalculator) null, vec3d, 5.0F, true, Level.ExplosionInteraction.BLOCK);
                 return InteractionResult.SUCCESS;
             } else if ((Boolean) state.getValue(BedBlock.OCCUPIED)) {
                 if (!this.kickVillagerOutOfBed(world, pos)) {
@@ -147,6 +148,7 @@ public class BedBlock extends HorizontalDirectionalBlock implements EntityBlock
     private InteractionResult explodeBed(BlockState iblockdata, Level world, BlockPos blockposition) {
         {
             {
+                final org.bukkit.block.BlockState explodedBlockState = org.bukkit.craftbukkit.block.CraftBlockStates.getUnplacedBlockState(world, blockposition, iblockdata); // Paper - exploded block state
                 world.removeBlock(blockposition, false);
                 BlockPos blockposition1 = blockposition.relative(((Direction) iblockdata.getValue(BedBlock.FACING)).getOpposite());
 
@@ -156,7 +158,7 @@ public class BedBlock extends HorizontalDirectionalBlock implements EntityBlock
 
                 Vec3 vec3d = blockposition.getCenter();
 
-                world.explode((Entity) null, world.damageSources().badRespawnPointExplosion(vec3d), (ExplosionDamageCalculator) null, vec3d, 5.0F, true, Level.ExplosionInteraction.BLOCK);
+                world.explode((Entity) null, world.damageSources().badRespawnPointExplosion(vec3d, explodedBlockState), (ExplosionDamageCalculator) null, vec3d, 5.0F, true, Level.ExplosionInteraction.BLOCK);
                 return InteractionResult.SUCCESS;
             }
         }
diff --git a/src/main/java/net/minecraft/world/level/block/RespawnAnchorBlock.java b/src/main/java/net/minecraft/world/level/block/RespawnAnchorBlock.java
index c83ffba568f33323b0f8b9a03fa0b7bbbfed4355..797ece59c10bdb60a86f71ca3b7bb95dbe0f1078 100644
--- a/src/main/java/net/minecraft/world/level/block/RespawnAnchorBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/RespawnAnchorBlock.java
@@ -131,6 +131,7 @@ public class RespawnAnchorBlock extends Block {
     }
 
     private void explode(BlockState state, Level world, final BlockPos explodedPos) {
+        final org.bukkit.block.BlockState explodedBlockState = org.bukkit.craftbukkit.block.CraftBlockStates.getBlockState(explodedPos, state, null); // Paper - exploded block state
         world.removeBlock(explodedPos, false);
         Stream<Direction> stream = Direction.Plane.HORIZONTAL.stream(); // CraftBukkit - decompile error
 
@@ -147,7 +148,7 @@ public class RespawnAnchorBlock extends Block {
         };
         Vec3 vec3d = explodedPos.getCenter();
 
-        world.explode((Entity) null, world.damageSources().badRespawnPointExplosion(vec3d), explosiondamagecalculator, vec3d, 5.0F, true, Level.ExplosionInteraction.BLOCK);
+        world.explode((Entity) null, world.damageSources().badRespawnPointExplosion(vec3d, explodedBlockState), explosiondamagecalculator, vec3d, 5.0F, true, Level.ExplosionInteraction.BLOCK); // Paper
     }
 
     public static boolean canSetSpawn(Level world) {
diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockStates.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockStates.java
index 000724a070f7f053c14cb53ecc45f0ee14454c53..9271ff2a9ea05569e3c81886399aa7ab47efb05d 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockStates.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockStates.java
@@ -277,6 +277,12 @@ public final class CraftBlockStates {
         BlockEntity tileEntity = (blockEntityTag == null) ? null : BlockEntity.loadStatic(blockPosition, blockData, blockEntityTag);
         return CraftBlockStates.getBlockState(null, blockPosition, blockData, tileEntity);
     }
+    // Paper start
+    public static BlockState getUnplacedBlockState(net.minecraft.world.level.BlockGetter levelAccessor, BlockPos blockPos, net.minecraft.world.level.block.state.BlockState blockData) {
+        BlockEntity tileEntity = levelAccessor.getBlockEntity(blockPos);
+        return CraftBlockStates.getBlockState(null, blockPos, blockData, tileEntity);
+    }
+    // Paper end
 
     // See BlockStateFactory#createBlockState(World, BlockPosition, IBlockData, TileEntity)
     private static CraftBlockState getBlockState(World world, BlockPos blockPosition, net.minecraft.world.level.block.state.BlockState blockData, BlockEntity tileEntity) {
diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
index 1854933bb3400f44da835364edda51d430da2160..6b49ae3b64bc2b62996e5d82c8cf81c94c2e7578 100644
--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
@@ -1048,7 +1048,7 @@ public class CraftEventFactory {
             CraftEventFactory.entityDamage = null;
             EntityDamageEvent event;
             if (damager == null) {
-                event = new EntityDamageByBlockEvent(null, entity.getBukkitEntity(), DamageCause.BLOCK_EXPLOSION, modifiers, modifierFunctions);
+                event = new EntityDamageByBlockEvent(null, entity.getBukkitEntity(), DamageCause.BLOCK_EXPLOSION, modifiers, modifierFunctions, source.explodedBlockState); // Paper - handle block state in damage
             } else if (entity instanceof EnderDragon && /*PAIL FIXME ((EntityEnderDragon) entity).target == damager*/ false) {
                 event = new EntityDamageEvent(entity.getBukkitEntity(), DamageCause.ENTITY_EXPLOSION, modifiers, modifierFunctions);
             } else {