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Check that a vehicle is a Vehicle before casting. Fixes BUKKIT-4749

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When an entity is being moved as the passenger of an entity from one
entity to another, a VehicleExitEvent is fired, but it is assumed that the
current entity is a Vehicle. However, entities can be passengers of more than
just Vehicles, which causes a ClassCastException to be thrown.

This commit fixes the issue by checking that the current entity's vehicle's
bukkitEntity is an instance of Vehicle before casting it to Vehicle.
This commit is contained in:
Nate Mortensen 2013-09-07 16:01:45 -06:00 committed by feildmaster
parent 5c861fe864
commit c62375f95e
1 changed files with 1 additions and 1 deletions
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2
src/main/java/net/minecraft/server/Entity.java
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@ -1421,7 +1421,7 @@ public abstract class Entity {
if ((this.bukkitEntity instanceof LivingEntity) && (entity.getBukkitEntity() instanceof Vehicle) && entity.world.isChunkLoaded((int) entity.locX >> 4, (int) entity.locZ >> 4)) {
// It's possible to move from one vehicle to another. We need to check if they're already in a vehicle, and fire an exit event if they are.
VehicleExitEvent exitEvent = null;
if (this.vehicle != null) {
if (this.vehicle != null && this.vehicle.getBukkitEntity() instanceof Vehicle) {
exitEvent = new VehicleExitEvent((Vehicle) this.vehicle.getBukkitEntity(), (LivingEntity) this.bukkitEntity);
pluginManager.callEvent(exitEvent);