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/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java index 50c5ad0eea45c1828b9a1c6c47727e4800940252..d372e2793948f532f473cd6eca578ebd3ff3fbfb 100644 --- a/src/main/java/net/minecraft/world/entity/Entity.java +++ b/src/main/java/net/minecraft/world/entity/Entity.java @@ -2601,11 +2601,16 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess } public void removeVehicle() { + // Paper start - Force entity dismount during teleportation + stopRiding(false); + } + public void stopRiding(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 } } @@ -2636,7 +2641,10 @@ 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 { @@ -2646,7 +2654,7 @@ 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) { @@ -2659,7 +2667,7 @@ 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 9bb2b2baecfd4cfb9dbbf7cf5c8be939f1ecc4d6..47b1a4ec278cf9762c9eb9c1448cf78912b7d77a 100644 --- a/src/main/java/net/minecraft/world/entity/LivingEntity.java +++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java @@ -3585,9 +3585,15 @@ public abstract class LivingEntity extends Entity implements Attackable { @Override public void stopRiding() { + // Paper start - Force entity dismount during teleportation + 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/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java index b27a6719edd47f7ecb3f8c5560a36fc201efea36..bbafbeff99a7c1bd2d9e27982671a017071f829c 100644 --- a/src/main/java/net/minecraft/world/entity/player/Player.java +++ b/src/main/java/net/minecraft/world/entity/player/Player.java @@ -1150,7 +1150,13 @@ public abstract class Player extends LivingEntity { @Override public void removeVehicle() { - super.removeVehicle(); + // Paper start - Force entity dismount during teleportation + stopRiding(false); + } + @Override + public void stopRiding(boolean suppressCancellation) { + super.stopRiding(suppressCancellation); + // Paper end - Force entity dismount during teleportation this.boardingCooldown = 0; }