PaperMC/patches/server/0522-Fix-Entity-Teleportation-and-cancel-velocity-if-tele.patch
Nassim Jahnke 06db5d08b0
Updated Upstream (Bukkit/CraftBukkit) (#6589)
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

Bukkit Changes:
44cfe143 SPIGOT-6249: Add Missing Effect Constants

CraftBukkit Changes:
14928261 SPIGOT-6249: Add Missing Effect Constants
332335e1 SPIGOT-6731: "Nag author" message in CraftServer lists one author only
6cd975d0 SPIGOT-5732, SPIGOT-6387: Overhaul Hanging entities
2021-09-11 19:27:48 +02:00

83 lines
5.3 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 25 Aug 2020 20:45:36 -0400
Subject: [PATCH] Fix Entity Teleportation and cancel velocity if teleported
Uses correct setPositionRotation for Entity teleporting instead of setLocation
as this is how Vanilla teleports entities.
Cancel any pending motion when teleported.
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index c05ced79e5bf6d2900f0479db3150e76e3874ba0..c791013aac43061453d13ce50f4864b3be1251e3 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -681,7 +681,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
public void handleAcceptTeleportPacket(ServerboundAcceptTeleportationPacket packet) {
PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel());
if (packet.getId() == this.awaitingTeleport && this.awaitingPositionFromClient != null) { // CraftBukkit
- this.player.absMoveTo(this.awaitingPositionFromClient.x, this.awaitingPositionFromClient.y, this.awaitingPositionFromClient.z, this.player.getYRot(), this.player.getXRot());
+ this.player.moveTo(this.awaitingPositionFromClient.x, this.awaitingPositionFromClient.y, this.awaitingPositionFromClient.z, this.player.getYRot(), this.player.getXRot()); // Paper - use proper setPositionRotation for teleportation
this.lastGoodX = this.awaitingPositionFromClient.x;
this.lastGoodY = this.awaitingPositionFromClient.y;
this.lastGoodZ = this.awaitingPositionFromClient.z;
@@ -1548,7 +1548,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
// CraftBukkit end
this.awaitingTeleportTime = this.tickCount;
- this.player.absMoveTo(d0, d1, d2, f, f1);
+ this.player.moveTo(d0, d1, d2, f, f1); // Paper - use proper setPositionRotation for teleportation
this.player.forceCheckHighPriority(); // Paper
this.player.connection.send(new ClientboundPlayerPositionPacket(d0 - d3, d1 - d4, d2 - d5, f - f2, f1 - f3, set, this.awaitingTeleport, flag));
}
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 8df955a0aa6cd0c7d10619fb63abd16af4754be8..a652bbc4b3c768fecfb6f067d21a90315256f885 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -152,6 +152,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n
// CraftBukkit start
private static final int CURRENT_LEVEL = 2;
+ public boolean preserveMotion = true; // Paper - keep initial motion on first setPositionRotation
static boolean isLevelAtLeast(CompoundTag tag, int level) {
return tag.contains("Bukkit.updateLevel") && tag.getInt("Bukkit.updateLevel") >= level;
}
@@ -1568,6 +1569,13 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n
}
public void moveTo(double x, double y, double z, float yaw, float pitch) {
+ // Paper - cancel entity velocity if teleported
+ if (!preserveMotion) {
+ this.deltaMovement = Vec3.ZERO;
+ } else {
+ this.preserveMotion = false;
+ }
+ // Paper end
this.setPosRaw(x, y, z);
this.setYRot(yaw);
this.setXRot(pitch);
diff --git a/src/main/java/net/minecraft/world/level/BaseSpawner.java b/src/main/java/net/minecraft/world/level/BaseSpawner.java
index b9e738542692aba7b78fc514ae8e3248df9998ea..c601b8b12756682a4cb300be8ebed4319902c5b5 100644
--- a/src/main/java/net/minecraft/world/level/BaseSpawner.java
+++ b/src/main/java/net/minecraft/world/level/BaseSpawner.java
@@ -170,6 +170,7 @@ public abstract class BaseSpawner {
return;
}
+ entity.preserveMotion = true; // Paper - preserve entity motion from tag
entity.moveTo(entity.getX(), entity.getY(), entity.getZ(), world.random.nextFloat() * 360.0F, 0.0F);
if (entity instanceof Mob) {
Mob entityinsentient = (Mob) entity;
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
index 2ae9392961383cbce07835234b95f415094c11fc..1f41d39fe3378bccc6c005d20e41d98f903762cc 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
@@ -576,7 +576,7 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
}
// entity.setLocation() throws no event, and so cannot be cancelled
- this.entity.absMoveTo(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch());
+ entity.moveTo(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch()); // Paper - use proper setPosition, as per vanilla teleporting
// SPIGOT-619: Force sync head rotation also
this.entity.setYHeadRot(location.getYaw());