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 0dd1762782837e905fbc405d95ef6e1dcd9b39b4..8167934aa9def31ef13f926c5b16ce075aebda18 100644 --- a/src/main/java/net/minecraft/server/level/ServerPlayer.java +++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java @@ -1297,11 +1297,13 @@ public class ServerPlayer extends Player { } } - @Override - public void stopRiding() { + // Paper start + @Override public void stopRiding() { stopRiding(false); } + @Override public void stopRiding(boolean suppressCancellation) { + // paper end 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 b4f2b969ad30be38c0a9e3f8efd2a57c3e0f7df0..3c7e75b8fc1bfbe08e232fcba412c83f4aba274c 100644 --- a/src/main/java/net/minecraft/world/entity/Entity.java +++ b/src/main/java/net/minecraft/world/entity/Entity.java @@ -2245,12 +2245,15 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n } - public void removeVehicle() { + // Paper start + public void removeVehicle() { stopRiding(false); } + public void stopRiding(boolean suppressCancellation) { + // Paper end 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 } } @@ -2313,7 +2316,10 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n 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 { @@ -2323,7 +2329,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n if (this.getBukkitEntity() instanceof Vehicle && entity.getBukkitEntity() instanceof LivingEntity) { VehicleExitEvent event = new VehicleExitEvent( (Vehicle) this.getBukkitEntity(), - (LivingEntity) entity.getBukkitEntity() + (LivingEntity) entity.getBukkitEntity(), !suppressCancellation // Paper ); // Suppress during worldgen if (this.valid) { @@ -2337,7 +2343,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n } // 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 1c97ba35c9588b98d66e82ca83e4c48615b9e01b..04a979eb45b903eb0411b996ef4fc9d889983b5d 100644 --- a/src/main/java/net/minecraft/world/entity/LivingEntity.java +++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java @@ -3335,11 +3335,13 @@ public abstract class LivingEntity extends Entity { return ((Byte) this.entityData.get(LivingEntity.DATA_LIVING_ENTITY_FLAGS) & 4) != 0; } - @Override - public void stopRiding() { + // Paper start + @Override public void stopRiding() { stopRiding(false); } + @Override public void stopRiding(boolean suppressCancellation) { + // 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 index 744d8c049e753c0e07cf064597a086ccf6d3f3ea..22ca888f0ec650616c098c8ffedfde5ea32ea4cb 100644 --- a/src/main/java/net/minecraft/world/entity/player/Player.java +++ b/src/main/java/net/minecraft/world/entity/player/Player.java @@ -1094,9 +1094,11 @@ public abstract class Player extends LivingEntity { return -0.35D; } - @Override - public void removeVehicle() { - super.removeVehicle(); + // Paper start + @Override public void removeVehicle() { stopRiding(false); } + @Override public void stopRiding(boolean suppressCancellation) { + // Paper end + super.stopRiding(suppressCancellation); // Paper - suppress this.boardingCooldown = 0; }