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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-11-15 12:30:06 +01:00
Paper/patches/server/0271-Call-player-spectator-target-events-and-improve-impl.patch
Nassim Jahnke 345a6a6205
Updated Upstream (CraftBukkit)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

CraftBukkit Changes:
ef0946409 PR-1091: Fix exit position in entity travel with portals
d12768f75 PR-1090: Remove no longer needed world reference from CraftMerchantCustom
7550f6854 SPIGOT-7115: Support hex color codes in custom merchant inventory titles
2022-07-25 18:44:24 +02:00

88 Zeilen
4.3 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/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index a8dd8cb390924a221e0be4ef4ef5e16868cc7682..a92a8e9d38cab33b2e161ef96e1cecd533b27324 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -1881,14 +1881,58 @@ public class ServerPlayer extends Player {
}
public void setCamera(@Nullable Entity entity) {
+ // Paper start - Add PlayerStartSpectatingEntityEvent and PlayerStopSpectatingEntity Event and improve implementation
Entity entity1 = this.getCamera();
- this.camera = (Entity) (entity == null ? this : entity);
- if (entity1 != this.camera) {
- this.connection.send(new ClientboundSetCameraPacket(this.camera));
- this.connection.teleport(this.camera.getX(), this.camera.getY(), this.camera.getZ(), this.getYRot(), this.getXRot(), TeleportCause.SPECTATE); // CraftBukkit
+ if (entity == null) {
+ entity = this;
+ }
+
+ if (entity1 == entity) return; // new spec target is the current spec target
+
+ if (entity == 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(), entity.getBukkitEntity());
+
+ if (!playerStartSpectatingEntityEvent.callEvent()) {
+ return;
+ }
+ }
+ // Validate
+ if (entity != this) {
+ if (entity.isRemoved() || !entity.valid || entity.level == null) {
+ MinecraftServer.LOGGER.info("Blocking player " + this + " from spectating invalid entity " + entity);
+ return;
+ }
+ if (this.isImmobile()) {
+ // use debug: clients might maliciously spam this
+ MinecraftServer.LOGGER.debug("Blocking frozen player " + this + " from spectating entity " + entity);
+ return;
+ }
}
+ this.camera = entity; // only set after validating state
+
+ if (entity != this) {
+ // Make sure we're in the right place
+ this.ejectPassengers(); // teleport can fail if we have passengers...
+ this.getBukkitEntity().teleport(new Location(entity.getCommandSenderWorld().getWorld(), entity.getX(), entity.getY(), entity.getZ(), this.getYRot(), this.getXRot()), TeleportCause.SPECTATE); // Correctly handle cross-world entities from api calls by using CB teleport
+
+ // Make sure we're tracking the entity before sending
+ ChunkMap.TrackedEntity tracker = ((ServerLevel)entity.level).getChunkSource().chunkMap.entityMap.get(entity.getId());
+ if (tracker != null) { // dumb plugins...
+ tracker.updatePlayer(this);
+ }
+ } else {
+ this.connection.teleport(this.camera.getX(), this.camera.getY(), this.camera.getZ(), this.getYRot(), this.getXRot(), TeleportCause.SPECTATE); // CraftBukkit
+ }
+ this.connection.send(new ClientboundSetCameraPacket(entity));
+ // Paper end
}
@Override