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 cbc472cc725c925395f60b7bea0de6663b5346ab..9a6f2281efb3b62ddcb194061bf3dbc4b80a440b 100644 --- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java +++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java @@ -657,7 +657,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl return; } - 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 - Fix Entity Teleportation and cancel velocity if teleported this.lastGoodX = this.awaitingPositionFromClient.x; this.lastGoodY = this.awaitingPositionFromClient.y; this.lastGoodZ = this.awaitingPositionFromClient.z; @@ -1580,7 +1580,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl // CraftBukkit end this.awaitingTeleportTime = this.tickCount; - this.player.absMoveTo(d0, d1, d2, f, f1); + this.player.moveTo(d0, d1, d2, f, f1); // Paper - Fix Entity Teleportation and cancel velocity if teleported this.player.connection.send(new ClientboundPlayerPositionPacket(d0 - d3, d1 - d4, d2 - d5, f - f2, f1 - f3, set, this.awaitingTeleport)); } diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java index 70380d5807cac6dec19ebe581d685b1e32d8830b..9946f04c7e5877f094293c4c0976aeecf5c83c56 100644 --- a/src/main/java/net/minecraft/world/entity/Entity.java +++ b/src/main/java/net/minecraft/world/entity/Entity.java @@ -161,6 +161,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S // CraftBukkit start private static final int CURRENT_LEVEL = 2; + public boolean preserveMotion = true; // Paper - Fix Entity Teleportation and cancel velocity if teleported; keep initial motion on first setPositionRotation static boolean isLevelAtLeast(CompoundTag tag, int level) { return tag.contains("Bukkit.updateLevel") && tag.getInt("Bukkit.updateLevel") >= level; } @@ -1773,6 +1774,13 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S } public void moveTo(double x, double y, double z, float yaw, float pitch) { + // Paper start - Fix Entity Teleportation and cancel velocity if teleported + if (!preserveMotion) { + this.deltaMovement = Vec3.ZERO; + } else { + this.preserveMotion = false; + } + // Paper end - Fix Entity Teleportation and cancel velocity if teleported 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 8e6d782f3a5a000217b7dcd27fc88aa340a58f47..7fdf026bdeb85d149e24aa013181a848ece4c55e 100644 --- a/src/main/java/net/minecraft/world/level/BaseSpawner.java +++ b/src/main/java/net/minecraft/world/level/BaseSpawner.java @@ -169,6 +169,7 @@ public abstract class BaseSpawner { return; } + entity.preserveMotion = true; // Paper - Fix Entity Teleportation and cancel velocity if teleported; preserve entity motion from tag entity.moveTo(entity.getX(), entity.getY(), entity.getZ(), randomsource.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 c17bb16567ad2354dc80e710469730b1dbc55b08..d5e8c8ed7528cdac203a7594ccf9576db0e5f019 100644 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java @@ -237,7 +237,7 @@ 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 moveTo, as per vanilla teleporting // SPIGOT-619: Force sync head rotation also this.entity.setYHeadRot(location.getYaw());