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c5a10665b8
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.
65 lines
3.8 KiB
Diff
65 lines
3.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Max Lee <max@themoep.de>
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Date: Thu, 27 May 2021 14:52:30 -0700
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Subject: [PATCH] Fix invulnerable end crystals
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MC-108513
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diff --git a/src/main/java/net/minecraft/world/entity/boss/enderdragon/EndCrystal.java b/src/main/java/net/minecraft/world/entity/boss/enderdragon/EndCrystal.java
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index 6f8d4584aae56fc7fbcbc38b1291ea415208fd5e..a33d89fe9ca9e343edab8bb1cc88c54130ddb4a7 100644
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--- a/src/main/java/net/minecraft/world/entity/boss/enderdragon/EndCrystal.java
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+++ b/src/main/java/net/minecraft/world/entity/boss/enderdragon/EndCrystal.java
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@@ -30,6 +30,7 @@ public class EndCrystal extends Entity {
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private static final EntityDataAccessor<Optional<BlockPos>> DATA_BEAM_TARGET = SynchedEntityData.defineId(EndCrystal.class, EntityDataSerializers.OPTIONAL_BLOCK_POS);
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private static final EntityDataAccessor<Boolean> DATA_SHOW_BOTTOM = SynchedEntityData.defineId(EndCrystal.class, EntityDataSerializers.BOOLEAN);
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public int time;
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+ public boolean generatedByDragonFight = false; // Paper - Fix invulnerable end crystals
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public EndCrystal(EntityType<? extends EndCrystal> type, Level world) {
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super(type, world);
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@@ -68,6 +69,17 @@ public class EndCrystal extends Entity {
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}
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// CraftBukkit end
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}
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+ // Paper start - Fix invulnerable end crystals
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+ if (this.level().paperConfig().unsupportedSettings.fixInvulnerableEndCrystalExploit && this.generatedByDragonFight && this.isInvulnerable()) {
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+ if (!java.util.Objects.equals(((ServerLevel) this.level()).uuid, this.getOriginWorld())
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+ || ((ServerLevel) this.level()).getDragonFight() == null
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+ || ((ServerLevel) this.level()).getDragonFight().respawnStage == null
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+ || ((ServerLevel) this.level()).getDragonFight().respawnStage.ordinal() > net.minecraft.world.level.dimension.end.DragonRespawnAnimation.SUMMONING_DRAGON.ordinal()) {
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+ this.setInvulnerable(false);
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+ this.setBeamTarget(null);
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+ }
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+ }
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+ // Paper end - Fix invulnerable end crystals
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}
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}
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@@ -79,6 +91,7 @@ public class EndCrystal extends Entity {
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}
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nbt.putBoolean("ShowBottom", this.showsBottom());
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+ if (this.generatedByDragonFight) nbt.putBoolean("Paper.GeneratedByDragonFight", this.generatedByDragonFight); // Paper - Fix invulnerable end crystals
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}
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@Override
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@@ -87,6 +100,7 @@ public class EndCrystal extends Entity {
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if (nbt.contains("ShowBottom", 1)) {
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this.setShowBottom(nbt.getBoolean("ShowBottom"));
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}
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+ if (nbt.contains("Paper.GeneratedByDragonFight", 1)) this.generatedByDragonFight = nbt.getBoolean("Paper.GeneratedByDragonFight"); // Paper - Fix invulnerable end crystals
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}
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diff --git a/src/main/java/net/minecraft/world/level/levelgen/feature/SpikeFeature.java b/src/main/java/net/minecraft/world/level/levelgen/feature/SpikeFeature.java
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index c3bf90178abe89ccc987718237d472ed10c70d69..260c3a7dc592fba220ad4a7febb43ee2c9279115 100644
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--- a/src/main/java/net/minecraft/world/level/levelgen/feature/SpikeFeature.java
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+++ b/src/main/java/net/minecraft/world/level/levelgen/feature/SpikeFeature.java
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@@ -114,6 +114,7 @@ public class SpikeFeature extends Feature<SpikeConfiguration> {
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endCrystal.moveTo(
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(double)spike.getCenterX() + 0.5, (double)(spike.getHeight() + 1), (double)spike.getCenterZ() + 0.5, random.nextFloat() * 360.0F, 0.0F
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);
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+ endCrystal.generatedByDragonFight = true; // Paper - Fix invulnerable end crystals
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world.addFreshEntity(endCrystal);
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BlockPos blockPos2 = endCrystal.blockPosition();
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this.setBlock(world, blockPos2.below(), Blocks.BEDROCK.defaultBlockState());
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