From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Aikar 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 bbfcadfd3316f2617288b1dd48d145b266b29cfe..eed7b0107f8910f8982d83a7081cf3c2cfe055fd 100644 --- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java +++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java @@ -682,7 +682,7 @@ 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; @@ -1565,7 +1565,7 @@ 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.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 edea3cbfe1856df0f6d32a70cac5de16abc2018a..707018a230e8f27e701c60bc7029d64c045d8bfc 100644 --- a/src/main/java/net/minecraft/world/entity/Entity.java +++ b/src/main/java/net/minecraft/world/entity/Entity.java @@ -151,6 +151,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i // 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; } @@ -1562,6 +1563,13 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i } 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 c0f33a6cb4812e13204552c125df06210adc7196..03726227fdd60e9cf77213d50184abff438e01ef 100644 --- a/src/main/java/net/minecraft/world/level/BaseSpawner.java +++ b/src/main/java/net/minecraft/world/level/BaseSpawner.java @@ -161,6 +161,7 @@ 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 7f9409bf8c3cc39376d9da04440f124958df401a..d0ad0e6bbb944a33fd67a7d3e36958407a774ede 100644 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java @@ -577,7 +577,7 @@ 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());