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Paper-Old/Spigot-Server-Patches/0298-Call-player-spectator-target-events-and-improve-impl.patch
Jake Potrebic 899bc53b79
Updated Upstream (Bukkit/CraftBukkit) (#4779)
Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
f47abd88 SPIGOT-6242: Fix some file line endings
de96535b SPIGOT-6234: enum classes don't serialize properly when implementing ConfigurationSerializable

CraftBukkit Changes:
4475707d SPIGOT-6244: /spawnpoint ignores angle
8b3b096d SPIGOT-6242: Fix some file line endings
4b33c749 SPIGOT-6186: Canceling a CreatureSpawnEvent​ results in a "Unable to summon entity due to duplicate UUIDs" error
2b3ca726 SPIGOT-6236: Vehicle passenger portal cooldown does not change
2020-11-17 22:45:18 -05:00

102 Zeilen
5.8 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Caleb Bassham <caleb.bassham@gmail.com>
Date: Fri, 28 Sep 2018 02:32:19 -0500
Subject: [PATCH] Call player spectator target events and improve
implementation
Use a proper teleport for teleporting to entities in different
worlds.
Implementation improvements authored by Spottedleaf <Spottedleaf@users.noreply.github.com>
Validate that the target entity is valid and deny spectate
requests from frozen players.
Also, make sure the entity is spawned to the client before
sending the camera packet. If the entity isn't spawned clientside
when it receives the camera packet, then the client will not
spectate the target entity.
Co-authored-by: Spottedleaf <Spottedleaf@users.noreply.github.com>
diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index 1e57e53c965a2e9335aa36926c44f7f3aa43af3c..b0f257cb35ff39d9dd6201235dc3ff5db8b85bd7 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -1663,15 +1663,59 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
return (Entity) (this.spectatedEntity == null ? this : this.spectatedEntity);
}
- public void setSpectatorTarget(Entity entity) {
+ public void setSpectatorTarget(Entity newSpectatorTarget) {
+ // Paper start - Add PlayerStartSpectatingEntityEvent and PlayerStopSpectatingEntity Event and improve implementation
Entity entity1 = this.getSpecatorTarget();
- this.spectatedEntity = (Entity) (entity == null ? this : entity);
- if (entity1 != this.spectatedEntity) {
- this.playerConnection.sendPacket(new PacketPlayOutCamera(this.spectatedEntity));
- this.playerConnection.a(this.spectatedEntity.locX(), this.spectatedEntity.locY(), this.spectatedEntity.locZ(), this.yaw, this.pitch, TeleportCause.SPECTATE); // CraftBukkit
+ if (newSpectatorTarget == null) {
+ newSpectatorTarget = this;
}
+ if (entity1 == newSpectatorTarget) return; // new spec target is the current spec target
+
+ if (newSpectatorTarget == this) {
+ com.destroystokyo.paper.event.player.PlayerStopSpectatingEntityEvent playerStopSpectatingEntityEvent = new com.destroystokyo.paper.event.player.PlayerStopSpectatingEntityEvent(this.getBukkitEntity(), entity1.getBukkitEntity());
+
+ if (!playerStopSpectatingEntityEvent.callEvent()) {
+ return;
+ }
+ } else {
+ com.destroystokyo.paper.event.player.PlayerStartSpectatingEntityEvent playerStartSpectatingEntityEvent = new com.destroystokyo.paper.event.player.PlayerStartSpectatingEntityEvent(this.getBukkitEntity(), entity1.getBukkitEntity(), newSpectatorTarget.getBukkitEntity());
+
+ if (!playerStartSpectatingEntityEvent.callEvent()) {
+ return;
+ }
+ }
+ // Validate
+ if (newSpectatorTarget != this) {
+ if (newSpectatorTarget.dead || newSpectatorTarget.shouldBeRemoved || !newSpectatorTarget.valid || newSpectatorTarget.world == null) {
+ MinecraftServer.LOGGER.info("Blocking player " + this.toString() + " from spectating invalid entity " + newSpectatorTarget.toString());
+ return;
+ }
+ if (this.isFrozen()) {
+ // use debug: clients might maliciously spam this
+ MinecraftServer.LOGGER.debug("Blocking frozen player " + this.toString() + " from spectating entity " + newSpectatorTarget.toString());
+ return;
+ }
+ }
+
+ this.spectatedEntity = newSpectatorTarget; // only set after validating state
+
+ if (newSpectatorTarget != this) {
+ // Make sure we're in the right place
+ this.ejectPassengers(); // teleport can fail if we have passengers...
+ this.getBukkitEntity().teleport(new Location(newSpectatorTarget.getWorld().getWorld(), newSpectatorTarget.locX(), newSpectatorTarget.locY(), newSpectatorTarget.locZ(), this.yaw, this.pitch), TeleportCause.SPECTATE); // Correctly handle cross-world entities from api calls by using CB teleport
+
+ // Make sure we're tracking the entity before sending
+ PlayerChunkMap.EntityTracker tracker = ((WorldServer)newSpectatorTarget.world).getChunkProvider().playerChunkMap.trackedEntities.get(newSpectatorTarget.getId());
+ if (tracker != null) { // dumb plugins...
+ tracker.updatePlayer(this);
+ }
+ } else {
+ this.playerConnection.teleport(this.spectatedEntity.locX(), this.spectatedEntity.locY(), this.spectatedEntity.locZ(), this.yaw, this.pitch, TeleportCause.SPECTATE); // CraftBukkit
+ }
+ this.playerConnection.sendPacket(new PacketPlayOutCamera(newSpectatorTarget));
+ // Paper end
}
@Override
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index be2c94a8fb93ee024e035cc8557f230ee7c1c647..72ace986da7af07c4e765fc05399f898b869a119 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -1206,6 +1206,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
}
// CraftBukkit start - Delegate to teleport(Location)
+ public final void teleport(double d0, double d1, double d2, float f, float f1, PlayerTeleportEvent.TeleportCause cause) { this.a(d0, d1, d2, f, f1, cause); } // Paper - OBFHELPER
public void a(double d0, double d1, double d2, float f, float f1, PlayerTeleportEvent.TeleportCause cause) {
this.a(d0, d1, d2, f, f1, Collections.<PacketPlayOutPosition.EnumPlayerTeleportFlags>emptySet(), cause);
}