From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Shane Freeder 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 index 1108fa6c7ac28304d104d4e5df2bdf4e9a6bd929..b4947ee9615b1b2108046b9ab87b65b53dbb23f6 100644 --- a/src/main/java/net/minecraft/server/level/ServerPlayer.java +++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java @@ -2523,9 +2523,15 @@ public class ServerPlayer extends net.minecraft.world.entity.player.Player { @Override public void stopRiding() { + // Paper start - Force entity dismount during teleportation + this.stopRiding(false); + } + @Override + public void stopRiding(boolean suppressCancellation) { + // Paper end - Force entity dismount during teleportation Entity entity = this.getVehicle(); - super.stopRiding(); + super.stopRiding(suppressCancellation); // Paper - Force entity dismount during teleportation if (entity instanceof LivingEntity entityliving) { Iterator iterator = entityliving.getActiveEffects().iterator(); diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java index d4b1122fcf9c35f492764d0a7b8b4c41e46aa90a..026af10f7de0267c7335385fea53a823f3898e8b 100644 --- a/src/main/java/net/minecraft/world/entity/Entity.java +++ b/src/main/java/net/minecraft/world/entity/Entity.java @@ -2705,17 +2705,28 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess } public void removeVehicle() { + // Paper start - Force entity dismount during teleportation + this.removeVehicle(false); + } + public void removeVehicle(boolean suppressCancellation) { + // Paper end - Force entity dismount during teleportation 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 - Force entity dismount during teleportation } } public void stopRiding() { - this.removeVehicle(); + // Paper start - Force entity dismount during teleportation + this.stopRiding(false); + } + + public void stopRiding(boolean suppressCancellation) { + this.removeVehicle(suppressCancellation); + // Paper end - Force entity dismount during teleportation } protected void addPassenger(Entity passenger) { @@ -2740,7 +2751,10 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess } } - protected boolean removePassenger(Entity entity) { // CraftBukkit + // Paper start - Force entity dismount during teleportation + protected boolean removePassenger(Entity entity) { return removePassenger(entity, false);} + protected boolean removePassenger(Entity entity, boolean suppressCancellation) { // CraftBukkit + // Paper end - Force entity dismount during teleportation if (entity.getVehicle() == this) { throw new IllegalStateException("Use x.stopRiding(y), not y.removePassenger(x)"); } else { @@ -2750,7 +2764,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess if (this.getBukkitEntity() instanceof Vehicle && entity.getBukkitEntity() instanceof LivingEntity) { VehicleExitEvent event = new VehicleExitEvent( (Vehicle) this.getBukkitEntity(), - (LivingEntity) entity.getBukkitEntity() + (LivingEntity) entity.getBukkitEntity(), !suppressCancellation // Paper - Force entity dismount during teleportation ); // Suppress during worldgen if (this.valid) { @@ -2763,7 +2777,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess } } - EntityDismountEvent event = new EntityDismountEvent(entity.getBukkitEntity(), this.getBukkitEntity()); + EntityDismountEvent event = new EntityDismountEvent(entity.getBukkitEntity(), this.getBukkitEntity(), !suppressCancellation); // Paper - Force entity dismount during teleportation // 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 43eddcd8496ff2f089119f6632acfe1b56466c3d..e047911c7faa3cdcd3df8899857fcadf3eec3d89 100644 --- a/src/main/java/net/minecraft/world/entity/LivingEntity.java +++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java @@ -3619,9 +3619,15 @@ public abstract class LivingEntity extends Entity implements Attackable { @Override public void stopRiding() { + // Paper start - Force entity dismount during teleportation + this.stopRiding(false); + } + @Override + public void stopRiding(boolean suppressCancellation) { + // Paper end - Force entity dismount during teleportation Entity entity = this.getVehicle(); - super.stopRiding(); + super.stopRiding(suppressCancellation); // Paper - Force entity dismount during teleportation if (entity != null && entity != this.getVehicle() && !this.level().isClientSide) { this.dismountVehicle(entity); } diff --git a/src/main/java/net/minecraft/world/entity/monster/Shulker.java b/src/main/java/net/minecraft/world/entity/monster/Shulker.java index 882236c8ebad90ed2adc873de4dda3b7f3f869d9..632b74e84d6ee58da8806e30b75e16fb864afa64 100644 --- a/src/main/java/net/minecraft/world/entity/monster/Shulker.java +++ b/src/main/java/net/minecraft/world/entity/monster/Shulker.java @@ -288,7 +288,13 @@ public class Shulker extends AbstractGolem implements VariantHolder