Paper/patches/server/0287-force-entity-dismount-during-teleportation.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Thu, 15 Nov 2018 13:38:37 +0000
Subject: [PATCH] force entity dismount during teleportation
Entities must be dismounted before teleportation in order to avoid
multiple issues in the server with regards to teleportation, shamefully,
too many plugins rely on the events firing, which means that not firing
these events caues more issues than it solves;
In order to counteract this, Entity dismount/exit vehicle events have
been modified to supress cancellation (and has a method to allow plugins
to check if this has been set), noting that cancellation will be silently
surpressed given that plugins are not expecting this event to not be cancellable.
This is a far from ideal scenario, however: given the current state of this
event and other alternatives causing issues elsewhere, I believe that
this is going to be the best soultion all around.
Improvements/suggestions welcome!
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
Rewrite chunk system (#8177) Patch documentation to come Issues with the old system that are fixed now: - World generation does not scale with cpu cores effectively. - Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps. - Unreliable prioritisation of chunk gen/load calls that block the main thread. - Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved. - Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal. - Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles. The above list is not complete. The patch documentation will complete it. New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil. Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft. The old legacy chunk system patches have been moved to the removed folder in case we need them again.
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index 32aba4c822742d6a2ebbc25b169ffb665e9413f7..135e61ffa69a56e7c5edcd9e2066334abf963340 100644
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--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
Rewrite chunk system (#8177) Patch documentation to come Issues with the old system that are fixed now: - World generation does not scale with cpu cores effectively. - Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps. - Unreliable prioritisation of chunk gen/load calls that block the main thread. - Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved. - Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal. - Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles. The above list is not complete. The patch documentation will complete it. New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil. Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft. The old legacy chunk system patches have been moved to the removed folder in case we need them again.
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@@ -1336,11 +1336,13 @@ public class ServerPlayer extends Player {
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}
}
- @Override
- public void stopRiding() {
+ // Paper start
+ @Override public void stopRiding() { stopRiding(false); }
+ @Override public void stopRiding(boolean suppressCancellation) {
+ // Paper end
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Entity entity = this.getVehicle();
- super.stopRiding();
+ super.stopRiding(suppressCancellation); // Paper
Entity entity1 = this.getVehicle();
if (entity1 != entity && this.connection != null) {
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index f174af45cd593d8f74205472e25db081b5289ee9..fb67f1d76d683694db13b29bab1d69606b414950 100644
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--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -2381,11 +2381,16 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
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}
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public void removeVehicle() {
+ // Paper start
+ stopRiding(false);
+ }
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+ public void stopRiding(boolean suppressCancellation) {
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+ // Paper end
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if (this.vehicle != null) {
Entity entity = this.vehicle;
this.vehicle = null;
- if (!entity.removePassenger(this)) this.vehicle = entity; // CraftBukkit
+ if (!entity.removePassenger(this, suppressCancellation)) this.vehicle = entity; // CraftBukkit // Paper
}
}
@@ -2448,7 +2453,10 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
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return true; // CraftBukkit
}
- protected boolean removePassenger(Entity entity) { // CraftBukkit
+ // Paper start
+ protected boolean removePassenger(Entity entity) { return removePassenger(entity, false);}
+ protected boolean removePassenger(Entity entity, boolean suppressCancellation) { // CraftBukkit
+ // Paper end
if (entity.getVehicle() == this) {
throw new IllegalStateException("Use x.stopRiding(y), not y.removePassenger(x)");
} else {
@@ -2458,7 +2466,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
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if (this.getBukkitEntity() instanceof Vehicle && entity.getBukkitEntity() instanceof LivingEntity) {
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VehicleExitEvent event = new VehicleExitEvent(
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(Vehicle) this.getBukkitEntity(),
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- (LivingEntity) entity.getBukkitEntity()
+ (LivingEntity) entity.getBukkitEntity(), !suppressCancellation // Paper
);
// Suppress during worldgen
if (this.valid) {
@@ -2472,7 +2480,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
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}
// CraftBukkit end
// Spigot start
- org.spigotmc.event.entity.EntityDismountEvent event = new org.spigotmc.event.entity.EntityDismountEvent(entity.getBukkitEntity(), this.getBukkitEntity());
+ org.spigotmc.event.entity.EntityDismountEvent event = new org.spigotmc.event.entity.EntityDismountEvent(entity.getBukkitEntity(), this.getBukkitEntity(), !suppressCancellation); // Paper
// Suppress during worldgen
if (this.valid) {
Bukkit.getPluginManager().callEvent(event);
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 8155421080761734c519042e1c24dd2e765d6e75..4e490415e31fcd1a5d780a085ac916cbfc54bb12 100644
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--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -3407,9 +3407,15 @@ public abstract class LivingEntity extends Entity {
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@Override
public void stopRiding() {
+ // Paper start
+ stopRiding(false);
+ }
+ @Override
+ public void stopRiding(boolean suppressCancellation) {
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+ // Paper end
Entity entity = this.getVehicle();
- super.stopRiding();
+ super.stopRiding(suppressCancellation); // Paper - suppress
if (entity != null && entity != this.getVehicle() && !this.level.isClientSide) {
this.dismountVehicle(entity);
}
diff --git a/src/main/java/net/minecraft/world/entity/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java
2022-07-27 21:49:24 +02:00
index 2520ba136cf17392120f6187a73015f438c302f1..d308c671ec1c4440777bccf1609ceca6670b98a8 100644
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--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
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@@ -1160,7 +1160,13 @@ public abstract class Player extends LivingEntity {
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@Override
public void removeVehicle() {
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- super.removeVehicle();
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+ // Paper start
+ stopRiding(false);
+ }
+ @Override
+ public void stopRiding(boolean suppressCancellation) {
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+ // Paper end
+ super.stopRiding(suppressCancellation); // Paper - suppress
this.boardingCooldown = 0;
}