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Paper/patches/server/0765-More-Teleport-API.patch
Owen 89d51d5f29
Allow enabling sand duping (#10191) 
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable.

It should be noted that this decision does not promise all future exploits will be configurable.
2024-03-03 17:05:34 -05:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
Date: Sun, 5 Sep 2021 12:15:59 -0400
Subject: [PATCH] More Teleport API
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 5775d071f714e7b9d959bfa94510b865f489e68e..27eb4bc4d1276ea36b97d0faeed2acee8b7a64cc 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1558,11 +1558,17 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
return false; // CraftBukkit - Return event status
}
- PlayerTeleportEvent event = new PlayerTeleportEvent(player, from.clone(), to.clone(), cause);
+ // Paper start - Teleport API
+ Set<io.papermc.paper.entity.TeleportFlag.Relative> relativeFlags = java.util.EnumSet.noneOf(io.papermc.paper.entity.TeleportFlag.Relative.class);
+ for (RelativeMovement relativeArgument : set) {
+ relativeFlags.add(org.bukkit.craftbukkit.entity.CraftPlayer.toApiRelativeFlag(relativeArgument));
+ }
+ PlayerTeleportEvent event = new PlayerTeleportEvent(player, from.clone(), to.clone(), cause, java.util.Set.copyOf(relativeFlags));
+ // Paper end - Teleport API
this.cserver.getPluginManager().callEvent(event);
if (event.isCancelled() || !to.equals(event.getTo())) {
- set.clear(); // Can't relative teleport
+ // set.clear(); // Can't relative teleport // Paper - Teleport API; Now you can!
to = event.isCancelled() ? event.getFrom() : event.getTo();
d0 = to.getX();
d1 = to.getY();
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
index a5a9c34709d3bb716e2dc9bb6bd548992df74f46..9ea189c26c6a5fae84bcc7ed098426d8c001cd5e 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
@@ -219,15 +219,36 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
@Override
public boolean teleport(Location location, TeleportCause cause) {
+ // Paper start - Teleport passenger API
+ return teleport(location, cause, new io.papermc.paper.entity.TeleportFlag[0]);
+ }
+
+ @Override
+ public boolean teleport(Location location, TeleportCause cause, io.papermc.paper.entity.TeleportFlag... flags) {
+ // Paper end
Preconditions.checkArgument(location != null, "location cannot be null");
location.checkFinite();
+ // Paper start - Teleport passenger API
+ Set<io.papermc.paper.entity.TeleportFlag> flagSet = Set.of(flags);
+ boolean dismount = !flagSet.contains(io.papermc.paper.entity.TeleportFlag.EntityState.RETAIN_VEHICLE);
+ boolean ignorePassengers = flagSet.contains(io.papermc.paper.entity.TeleportFlag.EntityState.RETAIN_PASSENGERS);
+ // Don't allow teleporting between worlds while keeping passengers
+ if (flagSet.contains(io.papermc.paper.entity.TeleportFlag.EntityState.RETAIN_PASSENGERS) && this.entity.isVehicle() && location.getWorld() != this.getWorld()) {
+ return false;
+ }
+
+ // Don't allow to teleport between worlds if remaining on vehicle
+ if (!dismount && this.entity.isPassenger() && location.getWorld() != this.getWorld()) {
+ return false;
+ }
+ // Paper end
- if (this.entity.isVehicle() || this.entity.isRemoved()) {
+ if ((!ignorePassengers && this.entity.isVehicle()) || this.entity.isRemoved()) { // Paper - Teleport passenger API
return false;
}
// If this entity is riding another entity, we must dismount before teleporting.
- this.entity.stopRiding();
+ if (dismount) this.entity.stopRiding(); // Paper - Teleport passenger API
// Let the server handle cross world teleports
if (location.getWorld() != null && !location.getWorld().equals(this.getWorld())) {
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 11e144bf561cc3c4dc1d8b712f915cc167f4d4ed..f606250106f1bcf5870dff1167f2902f85f7784a 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1195,13 +1195,101 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
@Override
public void setRotation(float yaw, float pitch) {
- throw new UnsupportedOperationException("Cannot set rotation of players. Consider teleporting instead.");
+ // Paper start - Teleport API
+ Location targetLocation = this.getEyeLocation();
+ targetLocation.setYaw(yaw);
+ targetLocation.setPitch(pitch);
+
+ org.bukkit.util.Vector direction = targetLocation.getDirection();
+ direction.multiply(9999999); // We need to move the target block.. FAR out
+ targetLocation.add(direction);
+ this.lookAt(targetLocation, io.papermc.paper.entity.LookAnchor.EYES);
+ // Paper end
}
@Override
public boolean teleport(Location location, PlayerTeleportEvent.TeleportCause cause) {
+ // Paper start - Teleport API
+ return this.teleport(location, cause, new io.papermc.paper.entity.TeleportFlag[0]);
+ }
+
+ @Override
+ public void lookAt(@NotNull org.bukkit.entity.Entity entity, @NotNull io.papermc.paper.entity.LookAnchor playerAnchor, @NotNull io.papermc.paper.entity.LookAnchor entityAnchor) {
+ this.getHandle().lookAt(toNmsAnchor(playerAnchor), ((CraftEntity) entity).getHandle(), toNmsAnchor(entityAnchor));
+ }
+
+ @Override
+ public void lookAt(double x, double y, double z, @NotNull io.papermc.paper.entity.LookAnchor playerAnchor) {
+ this.getHandle().lookAt(toNmsAnchor(playerAnchor), new Vec3(x, y, z));
+ }
+
+ public static net.minecraft.commands.arguments.EntityAnchorArgument.Anchor toNmsAnchor(io.papermc.paper.entity.LookAnchor nmsAnchor) {
+ return switch (nmsAnchor) {
+ case EYES -> net.minecraft.commands.arguments.EntityAnchorArgument.Anchor.EYES;
+ case FEET -> net.minecraft.commands.arguments.EntityAnchorArgument.Anchor.FEET;
+ };
+ }
+
+ public static io.papermc.paper.entity.LookAnchor toApiAnchor(net.minecraft.commands.arguments.EntityAnchorArgument.Anchor playerAnchor) {
+ return switch (playerAnchor) {
+ case EYES -> io.papermc.paper.entity.LookAnchor.EYES;
+ case FEET -> io.papermc.paper.entity.LookAnchor.FEET;
+ };
+ }
+
+ public static net.minecraft.world.entity.RelativeMovement toNmsRelativeFlag(io.papermc.paper.entity.TeleportFlag.Relative apiFlag) {
+ return switch (apiFlag) {
+ case X -> net.minecraft.world.entity.RelativeMovement.X;
+ case Y -> net.minecraft.world.entity.RelativeMovement.Y;
+ case Z -> net.minecraft.world.entity.RelativeMovement.Z;
+ case PITCH -> net.minecraft.world.entity.RelativeMovement.X_ROT;
+ case YAW -> net.minecraft.world.entity.RelativeMovement.Y_ROT;
+ };
+ }
+
+ public static io.papermc.paper.entity.TeleportFlag.Relative toApiRelativeFlag(net.minecraft.world.entity.RelativeMovement nmsFlag) {
+ return switch (nmsFlag) {
+ case X -> io.papermc.paper.entity.TeleportFlag.Relative.X;
+ case Y -> io.papermc.paper.entity.TeleportFlag.Relative.Y;
+ case Z -> io.papermc.paper.entity.TeleportFlag.Relative.Z;
+ case X_ROT -> io.papermc.paper.entity.TeleportFlag.Relative.PITCH;
+ case Y_ROT -> io.papermc.paper.entity.TeleportFlag.Relative.YAW;
+ };
+ }
+
+ @Override
+ public boolean teleport(Location location, org.bukkit.event.player.PlayerTeleportEvent.TeleportCause cause, io.papermc.paper.entity.TeleportFlag... flags) {
+ Set<io.papermc.paper.entity.TeleportFlag.Relative> relativeArguments;
+ Set<io.papermc.paper.entity.TeleportFlag> allFlags;
+ if (flags.length == 0) {
+ relativeArguments = Set.of();
+ allFlags = Set.of();
+ } else {
+ relativeArguments = java.util.EnumSet.noneOf(io.papermc.paper.entity.TeleportFlag.Relative.class);
+ allFlags = new HashSet<>();
+ for (io.papermc.paper.entity.TeleportFlag flag : flags) {
+ if (flag instanceof final io.papermc.paper.entity.TeleportFlag.Relative relativeTeleportFlag) {
+ relativeArguments.add(relativeTeleportFlag);
+ }
+ allFlags.add(flag);
+ }
+ }
+ boolean dismount = !allFlags.contains(io.papermc.paper.entity.TeleportFlag.EntityState.RETAIN_VEHICLE);
+ boolean ignorePassengers = allFlags.contains(io.papermc.paper.entity.TeleportFlag.EntityState.RETAIN_PASSENGERS);
+ // Paper end - Teleport API
Preconditions.checkArgument(location != null, "location");
Preconditions.checkArgument(location.getWorld() != null, "location.world");
+ // Paper start - Teleport passenger API
+ // Don't allow teleporting between worlds while keeping passengers
+ if (ignorePassengers && entity.isVehicle() && location.getWorld() != this.getWorld()) {
+ return false;
+ }
+
+ // Don't allow to teleport between worlds if remaining on vehicle
+ if (!dismount && entity.isPassenger() && location.getWorld() != this.getWorld()) {
+ return false;
+ }
+ // Paper end
location.checkFinite();
ServerPlayer entity = this.getHandle();
@@ -1214,7 +1302,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
return false;
}
- if (entity.isVehicle()) {
+ if (entity.isVehicle() && !ignorePassengers) { // Paper - Teleport API
return false;
}
@@ -1223,7 +1311,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
// To = Players new Location if Teleport is Successful
Location to = location;
// Create & Call the Teleport Event.
- PlayerTeleportEvent event = new PlayerTeleportEvent(this, from, to, cause);
+ PlayerTeleportEvent event = new PlayerTeleportEvent(this, from, to, cause, Set.copyOf(relativeArguments)); // Paper - Teleport API
this.server.getPluginManager().callEvent(event);
// Return False to inform the Plugin that the Teleport was unsuccessful/cancelled.
@@ -1232,7 +1320,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
}
// If this player is riding another entity, we must dismount before teleporting.
- entity.stopRiding();
+ if (dismount) entity.stopRiding(); // Paper - Teleport API
// SPIGOT-5509: Wakeup, similar to riding
if (this.isSleeping()) {
@@ -1248,13 +1336,19 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
ServerLevel toWorld = ((CraftWorld) to.getWorld()).getHandle();
// Close any foreign inventory
- if (this.getHandle().containerMenu != this.getHandle().inventoryMenu) {
+ if (this.getHandle().containerMenu != this.getHandle().inventoryMenu && !allFlags.contains(io.papermc.paper.entity.TeleportFlag.EntityState.RETAIN_OPEN_INVENTORY)) { // Paper
this.getHandle().closeContainer(org.bukkit.event.inventory.InventoryCloseEvent.Reason.TELEPORT); // Paper - Inventory close reason
}
// Check if the fromWorld and toWorld are the same.
if (fromWorld == toWorld) {
- entity.connection.teleport(to);
+ // Paper start - Teleport API
+ final Set<net.minecraft.world.entity.RelativeMovement> nms = java.util.EnumSet.noneOf(net.minecraft.world.entity.RelativeMovement.class);
+ for (final io.papermc.paper.entity.TeleportFlag.Relative bukkit : relativeArguments) {
+ nms.add(toNmsRelativeFlag(bukkit));
+ }
+ entity.connection.internalTeleport(to.getX(), to.getY(), to.getZ(), to.getYaw(), to.getPitch(), nms);
+ // Paper end - Teleport API
} else {
// The respawn reason should never be used if the passed location is non null.
this.server.getHandle().respawn(entity, toWorld, true, to, !toWorld.paperConfig().environment.disableTeleportationSuffocationCheck, null); // Paper
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