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Code Issues Projects Releases Packages Wiki Activity
PaperMC/patches/server/0735-Fire-EntityChangeBlockEvent-in-more-places.patch
Bjarne Koll c5a10665b8
Remove wall-time / unused skip tick protection (#11412) 
Spigot still maintains some partial implementation of "tick skipping", a
practice in which the MinecraftServer.currentTick field is updated not
by an increment of one per actual tick, but instead set to
System.currentTimeMillis() / 50. This behaviour means that the tracked
tick may "skip" a tick value in case a previous tick took more than the
expected 50ms.

To compensate for this in important paths, spigot/craftbukkit
implements "wall-time". Instead of incrementing/decrementing ticks on
block entities/entities by one for each call to their tick() method,
they instead increment/decrement important values, like
an ItemEntity's age or pickupDelay, by the difference of
`currentTick - lastTick`, where `lastTick` is the value of
`currentTick` during the last tick() call.

These "fixes" however do not play nicely with minecraft's simulation
distance as entities/block entities implementing the above behaviour
would "catch up" their values when moving from a non-ticking chunk to a
ticking one as their `lastTick` value remains stuck on the last tick in
a ticking chunk and hence lead to a large "catch up" once ticked again.

Paper completely removes the "tick skipping" behaviour (See patch
"Further-improve-server-tick-loop"), making the above precautions
completely unnecessary, which also rids paper of the previous described
incompatibility with non-ticking chunks.
2024-09-19 16:36:07 +02:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Mon, 9 Aug 2021 20:45:46 -0700
Subject: [PATCH] Fire EntityChangeBlockEvent in more places
Co-authored-by: ChristopheG <61288881+chrisgdt@users.noreply.github.com>
Co-authored-by: maxcom1 <46265094+maxcom1@users.noreply.github.com>
diff --git a/src/main/java/net/minecraft/world/effect/WeavingMobEffect.java b/src/main/java/net/minecraft/world/effect/WeavingMobEffect.java
index 6a84eaeddd0d7f050053c8aa0659d6811192aad4..1b2d41a6c6f149701c8a78f3d345f45069f1f857 100644
--- a/src/main/java/net/minecraft/world/effect/WeavingMobEffect.java
+++ b/src/main/java/net/minecraft/world/effect/WeavingMobEffect.java
@@ -25,11 +25,11 @@ class WeavingMobEffect extends MobEffect {
@Override
public void onMobRemoved(LivingEntity entity, int amplifier, Entity.RemovalReason reason) {
if (reason == Entity.RemovalReason.KILLED && (entity instanceof Player || entity.level().getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING))) {
- this.spawnCobwebsRandomlyAround(entity.level(), entity.getRandom(), entity.getOnPos());
+ this.spawnCobwebsRandomlyAround(entity, entity.level(), entity.getRandom(), entity.getOnPos()); // Paper - Fire EntityChangeBlockEvent in more places
}
}
- private void spawnCobwebsRandomlyAround(Level world, RandomSource random, BlockPos pos) {
+ private void spawnCobwebsRandomlyAround(LivingEntity entity, Level world, RandomSource random, BlockPos pos) { // Paper - Fire EntityChangeBlockEvent in more places
Set<BlockPos> set = Sets.newHashSet();
int i = this.maxCobwebs.applyAsInt(random);
@@ -46,6 +46,7 @@ class WeavingMobEffect extends MobEffect {
}
for (BlockPos blockPos3 : set) {
+ if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(entity, blockPos3, Blocks.COBWEB.defaultBlockState())) continue; // Paper - Fire EntityChangeBlockEvent in more places
world.setBlock(blockPos3, Blocks.COBWEB.defaultBlockState(), 3);
world.levelEvent(3018, blockPos3, 0);
}
diff --git a/src/main/java/net/minecraft/world/entity/LightningBolt.java b/src/main/java/net/minecraft/world/entity/LightningBolt.java
index bf5015c4bb68e5c46313bab1e59c0a4d45053b73..0471d9c85af02133f99cca4e181b83b58a3f1abc 100644
--- a/src/main/java/net/minecraft/world/entity/LightningBolt.java
+++ b/src/main/java/net/minecraft/world/entity/LightningBolt.java
@@ -99,7 +99,7 @@ public class LightningBolt extends Entity {
}
this.powerLightningRod();
- LightningBolt.clearCopperOnLightningStrike(this.level(), this.getStrikePosition());
+ LightningBolt.clearCopperOnLightningStrike(this.level(), this.getStrikePosition(), this); // Paper - Call EntityChangeBlockEvent
this.gameEvent(GameEvent.LIGHTNING_STRIKE);
}
}
@@ -193,7 +193,7 @@ public class LightningBolt extends Entity {
}
}
- private static void clearCopperOnLightningStrike(Level world, BlockPos pos) {
+ private static void clearCopperOnLightningStrike(Level world, BlockPos pos, Entity lightning) { // Paper - Call EntityChangeBlockEvent
BlockState iblockdata = world.getBlockState(pos);
BlockPos blockposition1;
BlockState iblockdata1;
@@ -207,24 +207,29 @@ public class LightningBolt extends Entity {
}
if (iblockdata1.getBlock() instanceof WeatheringCopper) {
- world.setBlockAndUpdate(blockposition1, WeatheringCopper.getFirst(world.getBlockState(blockposition1)));
+ // Paper start - Call EntityChangeBlockEvent
+ BlockState newBlock = WeatheringCopper.getFirst(world.getBlockState(blockposition1));
+ if (CraftEventFactory.callEntityChangeBlockEvent(lightning, blockposition1, newBlock)) {
+ world.setBlockAndUpdate(blockposition1, newBlock);
+ }
+ // Paper end - Call EntityChangeBlockEvent
BlockPos.MutableBlockPos blockposition_mutableblockposition = pos.mutable();
int i = world.random.nextInt(3) + 3;
for (int j = 0; j < i; ++j) {
int k = world.random.nextInt(8) + 1;
- LightningBolt.randomWalkCleaningCopper(world, blockposition1, blockposition_mutableblockposition, k);
+ LightningBolt.randomWalkCleaningCopper(world, blockposition1, blockposition_mutableblockposition, k, lightning); // Paper - transmit LightningBolt instance to call EntityChangeBlockEvent
}
}
}
- private static void randomWalkCleaningCopper(Level world, BlockPos pos, BlockPos.MutableBlockPos mutablePos, int count) {
+ private static void randomWalkCleaningCopper(Level world, BlockPos pos, BlockPos.MutableBlockPos mutablePos, int count, Entity lightning) { // Paper - transmit LightningBolt instance to call EntityChangeBlockEvent
mutablePos.set(pos);
for (int j = 0; j < count; ++j) {
- Optional<BlockPos> optional = LightningBolt.randomStepCleaningCopper(world, mutablePos);
+ Optional<BlockPos> optional = LightningBolt.randomStepCleaningCopper(world, mutablePos, lightning); // Paper - transmit LightningBolt instance to call EntityChangeBlockEvent
if (optional.isEmpty()) {
break;
@@ -235,7 +240,7 @@ public class LightningBolt extends Entity {
}
- private static Optional<BlockPos> randomStepCleaningCopper(Level world, BlockPos pos) {
+ private static Optional<BlockPos> randomStepCleaningCopper(Level world, BlockPos pos, Entity lightning) { // Paper - transmit LightningBolt instance to call EntityChangeBlockEvent
Iterator iterator = BlockPos.randomInCube(world.random, 10, pos, 1).iterator();
BlockPos blockposition1;
@@ -252,6 +257,7 @@ public class LightningBolt extends Entity {
BlockPos blockposition1Final = blockposition1; // CraftBukkit - decompile error
WeatheringCopper.getPrevious(iblockdata).ifPresent((iblockdata1) -> {
+ if (CraftEventFactory.callEntityChangeBlockEvent(lightning, blockposition1Final, iblockdata1)) // Paper - call EntityChangeBlockEvent
world.setBlockAndUpdate(blockposition1Final, iblockdata1); // CraftBukkit - decompile error
});
world.levelEvent(3002, blockposition1, -1);
diff --git a/src/main/java/net/minecraft/world/item/AxeItem.java b/src/main/java/net/minecraft/world/item/AxeItem.java
index c227784544e52ee2c75ab1a2181e0b0ba7246f4b..f005ea92449cf5e249ff64f4791c3bc6b8635528 100644
--- a/src/main/java/net/minecraft/world/item/AxeItem.java
+++ b/src/main/java/net/minecraft/world/item/AxeItem.java
@@ -65,6 +65,11 @@ public class AxeItem extends DiggerItem {
return InteractionResult.PASS;
} else {
ItemStack itemStack = context.getItemInHand();
+ // Paper start - EntityChangeBlockEvent
+ if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(player, blockPos, optional.get())) {
+ return InteractionResult.PASS;
+ }
+ // Paper end
if (player instanceof ServerPlayer) {
CriteriaTriggers.ITEM_USED_ON_BLOCK.trigger((ServerPlayer)player, blockPos, itemStack);
}
diff --git a/src/main/java/net/minecraft/world/item/EnderEyeItem.java b/src/main/java/net/minecraft/world/item/EnderEyeItem.java
index 391579b515c5a07066f82b33c4f9ef8ee1d05530..d8ce44a180f848f4c9c04967470c4359af979b2f 100644
--- a/src/main/java/net/minecraft/world/item/EnderEyeItem.java
+++ b/src/main/java/net/minecraft/world/item/EnderEyeItem.java
@@ -46,6 +46,11 @@ public class EnderEyeItem extends Item {
return InteractionResult.SUCCESS;
} else {
BlockState iblockdata1 = (BlockState) iblockdata.setValue(EndPortalFrameBlock.HAS_EYE, true);
+ // Paper start
+ if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(context.getPlayer(), blockposition, iblockdata1)) {
+ return InteractionResult.PASS;
+ }
+ // Paper end
Block.pushEntitiesUp(iblockdata, iblockdata1, world, blockposition);
world.setBlock(blockposition, iblockdata1, 2);
diff --git a/src/main/java/net/minecraft/world/item/HoneycombItem.java b/src/main/java/net/minecraft/world/item/HoneycombItem.java
index decabf6fccaca3d1bfeba679ac71677d33315f5e..14d37bf64af719eae3ea154ea7f952cc27712b57 100644
--- a/src/main/java/net/minecraft/world/item/HoneycombItem.java
+++ b/src/main/java/net/minecraft/world/item/HoneycombItem.java
@@ -74,6 +74,14 @@ public class HoneycombItem extends Item implements SignApplicator {
return getWaxed(blockState).map(state -> {
Player player = context.getPlayer();
ItemStack itemStack = context.getItemInHand();
+ // Paper start - EntityChangeBlockEvent
+ if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(player, blockPos, state)) {
+ if (!player.isCreative()) {
+ player.containerMenu.sendAllDataToRemote();
+ }
+ return InteractionResult.PASS;
+ }
+ // Paper end
if (player instanceof ServerPlayer) {
CriteriaTriggers.ITEM_USED_ON_BLOCK.trigger((ServerPlayer)player, blockPos, itemStack);
}
diff --git a/src/main/java/net/minecraft/world/item/PotionItem.java b/src/main/java/net/minecraft/world/item/PotionItem.java
index 92fa6523f2bba105a74fff228e36e58666ed56ae..d147b24bb57b322d3f5f4a9eb8cfef2acdd9e0f5 100644
--- a/src/main/java/net/minecraft/world/item/PotionItem.java
+++ b/src/main/java/net/minecraft/world/item/PotionItem.java
@@ -109,6 +109,12 @@ public class PotionItem extends Item {
BlockState iblockdata = world.getBlockState(blockposition);
if (context.getClickedFace() != Direction.DOWN && iblockdata.is(BlockTags.CONVERTABLE_TO_MUD) && potioncontents.is(Potions.WATER)) {
+ // Paper start
+ if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(entityhuman, blockposition, Blocks.MUD.defaultBlockState())) {
+ entityhuman.containerMenu.sendAllDataToRemote();
+ return InteractionResult.PASS;
+ }
+ // Paper end
world.playSound((Player) null, blockposition, SoundEvents.GENERIC_SPLASH, SoundSource.BLOCKS, 1.0F, 1.0F);
entityhuman.setItemInHand(context.getHand(), ItemUtils.createFilledResult(itemstack, entityhuman, new ItemStack(Items.GLASS_BOTTLE)));
entityhuman.awardStat(Stats.ITEM_USED.get(itemstack.getItem()));
diff --git a/src/main/java/net/minecraft/world/item/ShovelItem.java b/src/main/java/net/minecraft/world/item/ShovelItem.java
index c0e96284bb470353c0e54ad4e0c2205017913e61..24f6a158e4759aac3be8da4cf5e0d40bd295355b 100644
--- a/src/main/java/net/minecraft/world/item/ShovelItem.java
+++ b/src/main/java/net/minecraft/world/item/ShovelItem.java
@@ -46,20 +46,29 @@ public class ShovelItem extends DiggerItem {
Player player = context.getPlayer();
BlockState blockState2 = FLATTENABLES.get(blockState.getBlock());
BlockState blockState3 = null;
+ Runnable afterAction = null; // Paper
if (blockState2 != null && level.getBlockState(blockPos.above()).isAir()) {
- level.playSound(player, blockPos, SoundEvents.SHOVEL_FLATTEN, SoundSource.BLOCKS, 1.0F, 1.0F);
+ afterAction = () -> level.playSound(player, blockPos, SoundEvents.SHOVEL_FLATTEN, SoundSource.BLOCKS, 1.0F, 1.0F); // Paper
blockState3 = blockState2;
} else if (blockState.getBlock() instanceof CampfireBlock && blockState.getValue(CampfireBlock.LIT)) {
+ afterAction = () -> { // Paper
if (!level.isClientSide()) {
level.levelEvent(null, 1009, blockPos, 0);
}
CampfireBlock.dowse(context.getPlayer(), level, blockPos, blockState);
+ }; // Paper
blockState3 = blockState.setValue(CampfireBlock.LIT, Boolean.valueOf(false));
}
if (blockState3 != null) {
if (!level.isClientSide) {
+ // Paper start
+ if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(context.getPlayer(), blockPos, blockState3)) {
+ return InteractionResult.PASS;
+ }
+ afterAction.run();
+ // Paper end
level.setBlock(blockPos, blockState3, 11);
level.gameEvent(GameEvent.BLOCK_CHANGE, blockPos, GameEvent.Context.of(player, blockState3));
if (player != null) {
diff --git a/src/main/java/net/minecraft/world/level/block/CakeBlock.java b/src/main/java/net/minecraft/world/level/block/CakeBlock.java
index d72f4a01ca07df8a9678b3ca4707e5363e482283..43e306b5ef00b39923c1597f212b4a07fb95f1ca 100644
--- a/src/main/java/net/minecraft/world/level/block/CakeBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/CakeBlock.java
@@ -65,6 +65,12 @@ public class CakeBlock extends Block {
if (block instanceof CandleBlock) {
CandleBlock candleblock = (CandleBlock) block;
+ // Paper start - call change block event
+ if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(player, pos, CandleCakeBlock.byCandle(candleblock))) {
+ player.containerMenu.sendAllDataToRemote(); // update inv because candle could decrease
+ return ItemInteractionResult.PASS_TO_DEFAULT_BLOCK_INTERACTION;
+ }
+ // Paper end - call change block event
stack.consume(1, player);
world.playSound((Player) null, pos, SoundEvents.CAKE_ADD_CANDLE, SoundSource.BLOCKS, 1.0F, 1.0F);
world.setBlockAndUpdate(pos, CandleCakeBlock.byCandle(candleblock));
@@ -96,6 +102,14 @@ public class CakeBlock extends Block {
if (!player.canEat(false)) {
return InteractionResult.PASS;
} else {
+ // Paper start - call change block event
+ int i = state.getValue(CakeBlock.BITES);
+ final BlockState newState = i < MAX_BITES ? state.setValue(CakeBlock.BITES, i + 1) : world.getFluidState(pos).createLegacyBlock();
+ if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(player, pos, newState)) {
+ ((net.minecraft.server.level.ServerPlayer) player).getBukkitEntity().sendHealthUpdate();
+ return InteractionResult.PASS; // return a non-consume result to cake blocks don't drop their candles
+ }
+ // Paper end - call change block event
player.awardStat(Stats.EAT_CAKE_SLICE);
// CraftBukkit start
// entityhuman.getFoodData().eat(2, 0.1F);
@@ -109,7 +123,7 @@ public class CakeBlock extends Block {
((net.minecraft.server.level.ServerPlayer) player).getBukkitEntity().sendHealthUpdate();
// CraftBukkit end
- int i = (Integer) state.getValue(CakeBlock.BITES);
+ // Paper - move up
world.gameEvent((Entity) player, (Holder) GameEvent.EAT, pos);
if (i < 6) {
diff --git a/src/main/java/net/minecraft/world/level/block/ComposterBlock.java b/src/main/java/net/minecraft/world/level/block/ComposterBlock.java
index 804adb5ed92dfcf4c29c756dd95d7164150a9666..19fa8a9f935e9063497f8c0bd7909036fa0af2b7 100644
--- a/src/main/java/net/minecraft/world/level/block/ComposterBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/ComposterBlock.java
@@ -239,6 +239,11 @@ public class ComposterBlock extends Block implements WorldlyContainerHolder {
if (i < 8 && ComposterBlock.COMPOSTABLES.containsKey(stack.getItem())) {
if (i < 7 && !world.isClientSide) {
BlockState iblockdata1 = ComposterBlock.addItem(player, state, world, pos, stack);
+ // Paper start - handle cancelled events
+ if (iblockdata1 == null) {
+ return ItemInteractionResult.SKIP_DEFAULT_BLOCK_INTERACTION;
+ }
+ // Paper end
world.levelEvent(1500, pos, state != iblockdata1 ? 1 : 0);
player.awardStat(Stats.ITEM_USED.get(stack.getItem()));
@@ -269,11 +274,16 @@ public class ComposterBlock extends Block implements WorldlyContainerHolder {
if (i < 7 && ComposterBlock.COMPOSTABLES.containsKey(stack.getItem())) {
// CraftBukkit start
double rand = world.getRandom().nextDouble();
- BlockState iblockdata1 = ComposterBlock.addItem(user, state, DummyGeneratorAccess.INSTANCE, pos, stack, rand);
- if (state == iblockdata1 || !org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(user, pos, iblockdata1)) {
+ BlockState iblockdata1 = null; // Paper
+ if (false && (state == iblockdata1 || !org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(user, pos, iblockdata1))) { // Paper - move event call into addItem
return state;
}
iblockdata1 = ComposterBlock.addItem(user, state, world, pos, stack, rand);
+ // Paper start - handle cancelled events
+ if (iblockdata1 == null) {
+ return state;
+ }
+ // Paper end
// CraftBukkit end
stack.shrink(1);
@@ -314,11 +324,13 @@ public class ComposterBlock extends Block implements WorldlyContainerHolder {
return iblockdata1;
}
+ @Nullable // Paper
static BlockState addItem(@Nullable Entity user, BlockState state, LevelAccessor world, BlockPos pos, ItemStack stack) {
// CraftBukkit start
return ComposterBlock.addItem(user, state, world, pos, stack, world.getRandom().nextDouble());
}
+ @Nullable // Paper - make it nullable
static BlockState addItem(@Nullable Entity entity, BlockState iblockdata, LevelAccessor generatoraccess, BlockPos blockposition, ItemStack itemstack, double rand) {
// CraftBukkit end
int i = (Integer) iblockdata.getValue(ComposterBlock.LEVEL);
@@ -329,6 +341,11 @@ public class ComposterBlock extends Block implements WorldlyContainerHolder {
} else {
int j = i + 1;
BlockState iblockdata1 = (BlockState) iblockdata.setValue(ComposterBlock.LEVEL, j);
+ // Paper start - move the EntityChangeBlockEvent here to avoid conflict later for the compost events
+ if (entity != null && !org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(entity, blockposition, iblockdata1)) {
+ return null;
+ }
+ // Paper end
generatoraccess.setBlock(blockposition, iblockdata1, 3);
generatoraccess.gameEvent((Holder) GameEvent.BLOCK_CHANGE, blockposition, GameEvent.Context.of(entity, iblockdata1));
diff --git a/src/main/java/net/minecraft/world/level/block/entity/BeehiveBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BeehiveBlockEntity.java
index ef8a0236ab4fb648c4bb2a8cfc90e3cefe8f9f1d..1a3d8755c8f6a7cfe06069e2082d8147aaaff097 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/BeehiveBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/BeehiveBlockEntity.java
@@ -259,7 +259,13 @@ public class BeehiveBlockEntity extends BlockEntity {
--j;
}
- world.setBlockAndUpdate(blockposition, (BlockState) iblockdata.setValue(BeehiveBlock.HONEY_LEVEL, i + j));
+ // Paper start - Fire EntityChangeBlockEvent in more places
+ BlockState newBlockState = iblockdata.setValue(BeehiveBlock.HONEY_LEVEL, i + j);
+
+ if (org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(entitybee, blockposition, newBlockState)) {
+ world.setBlockAndUpdate(blockposition, newBlockState);
+ }
+ // Paper end - Fire EntityChangeBlockEvent in more places
}
}
}
diff --git a/src/main/java/org/bukkit/craftbukkit/util/DummyGeneratorAccess.java b/src/main/java/org/bukkit/craftbukkit/util/DummyGeneratorAccess.java
index daf3c26fce7569761951bfd5594c6726d854a9ff..e8a73d34dbb372581b03018aade170a31c266099 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/DummyGeneratorAccess.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/DummyGeneratorAccess.java
@@ -120,7 +120,7 @@ public class DummyGeneratorAccess implements WorldGenLevel {
@Override
public void gameEvent(Holder<GameEvent> event, Vec3 emitterPos, GameEvent.Context emitter) {
- // Used by BlockComposter
+ // Used by ComposterBlock
}
@Override
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