4104545b11
"It was from a different time before books were as jank as they are now. As time has gone on they've only proven to be worse and worse."
84 lines
5.3 KiB
Diff
84 lines
5.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Tue, 25 Aug 2020 20:45:36 -0400
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Subject: [PATCH] Fix Entity Teleportation and cancel velocity if teleported
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Uses correct setPositionRotation for Entity teleporting instead of setLocation
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as this is how Vanilla teleports entities.
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Cancel any pending motion when teleported.
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diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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index 10126fccdfde8acdb55bbe9c9bfc57435ed13677..32106de96d13b4d5be08c3c85b1e57d3552e9429 100644
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--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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@@ -682,7 +682,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
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public void handleAcceptTeleportPacket(ServerboundAcceptTeleportationPacket packet) {
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PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel());
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if (packet.getId() == this.awaitingTeleport && this.awaitingPositionFromClient != null) { // CraftBukkit
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- this.player.absMoveTo(this.awaitingPositionFromClient.x, this.awaitingPositionFromClient.y, this.awaitingPositionFromClient.z, this.player.getYRot(), this.player.getXRot());
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+ this.player.moveTo(this.awaitingPositionFromClient.x, this.awaitingPositionFromClient.y, this.awaitingPositionFromClient.z, this.player.getYRot(), this.player.getXRot()); // Paper - use proper setPositionRotation for teleportation
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this.lastGoodX = this.awaitingPositionFromClient.x;
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this.lastGoodY = this.awaitingPositionFromClient.y;
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this.lastGoodZ = this.awaitingPositionFromClient.z;
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@@ -1568,7 +1568,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
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// CraftBukkit end
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this.awaitingTeleportTime = this.tickCount;
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- this.player.absMoveTo(d0, d1, d2, f, f1);
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+ this.player.moveTo(d0, d1, d2, f, f1); // Paper - use proper setPositionRotation for teleportation
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this.player.forceCheckHighPriority(); // Paper
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this.player.connection.send(new ClientboundPlayerPositionPacket(d0 - d3, d1 - d4, d2 - d5, f - f2, f1 - f3, set, this.awaitingTeleport, flag));
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}
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diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
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index 0fd3d689b80484339f437525130bc34de2e71e54..b2e6426b9d8bcc860f83c3b79577bbc1cdb278db 100644
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--- a/src/main/java/net/minecraft/world/entity/Entity.java
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+++ b/src/main/java/net/minecraft/world/entity/Entity.java
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@@ -152,6 +152,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n
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// CraftBukkit start
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private static final int CURRENT_LEVEL = 2;
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+ public boolean preserveMotion = true; // Paper - keep initial motion on first setPositionRotation
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static boolean isLevelAtLeast(CompoundTag tag, int level) {
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return tag.contains("Bukkit.updateLevel") && tag.getInt("Bukkit.updateLevel") >= level;
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}
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@@ -1542,6 +1543,13 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n
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}
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public void moveTo(double x, double y, double z, float yaw, float pitch) {
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+ // Paper - cancel entity velocity if teleported
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+ if (!preserveMotion) {
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+ this.deltaMovement = Vec3.ZERO;
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+ } else {
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+ this.preserveMotion = false;
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+ }
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+ // Paper end
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this.setPosRaw(x, y, z);
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this.setYRot(yaw);
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this.setXRot(pitch);
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diff --git a/src/main/java/net/minecraft/world/level/BaseSpawner.java b/src/main/java/net/minecraft/world/level/BaseSpawner.java
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index a87531f4669c7947e02764b5ceb098385ad99159..9228c0bc797fb95c8ac949bdc568eadafee84a80 100644
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--- a/src/main/java/net/minecraft/world/level/BaseSpawner.java
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+++ b/src/main/java/net/minecraft/world/level/BaseSpawner.java
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@@ -170,6 +170,7 @@ public abstract class BaseSpawner {
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return;
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}
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+ entity.preserveMotion = true; // Paper - preserve entity motion from tag
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entity.moveTo(entity.getX(), entity.getY(), entity.getZ(), world.random.nextFloat() * 360.0F, 0.0F);
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if (entity instanceof Mob) {
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Mob entityinsentient = (Mob) entity;
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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index 9fa6368733b14024b6530684b458b601adc69689..5929caf68b37470298012fd48dd1b62b005fdf89 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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@@ -563,7 +563,7 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
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}
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// entity.setLocation() throws no event, and so cannot be cancelled
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- this.entity.absMoveTo(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch());
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+ entity.moveTo(location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch()); // Paper - use proper setPosition, as per vanilla teleporting
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// SPIGOT-619: Force sync head rotation also
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this.entity.setYHeadRot(location.getYaw());
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