Purpur/patches/server/0124-Add-EntityTeleportHinderedEvent.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mariell Hoversholm <proximyst@proximyst.com>
Date: Sat, 9 Jan 2021 15:27:46 +0100
Subject: [PATCH] Add EntityTeleportHinderedEvent

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.

diff --git a/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java b/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
index 41d7cff39fc37955877668337689b4b26cd8c7cf..f80f6da484f4144e743079e5104bf503419074b2 100644
--- a/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
@@ -46,6 +46,14 @@ public class EndPortalBlock extends BaseEntityBlock {
     public void entityInside(BlockState state, Level world, BlockPos pos, Entity entity) {
         if (!new io.papermc.paper.event.entity.EntityInsideBlockEvent(entity.getBukkitEntity(), org.bukkit.craftbukkit.block.CraftBlock.at(world, pos)).callEvent()) { return; } // Paper
         if (world instanceof ServerLevel && entity.canChangeDimensions() && Shapes.joinIsNotEmpty(Shapes.create(entity.getBoundingBox().move((double) (-pos.getX()), (double) (-pos.getY()), (double) (-pos.getZ()))), state.getShape(world, pos), BooleanOp.AND)) {
+            // Purpur start
+            if (entity.isPassenger() || entity.isVehicle()) {
+                if (new org.purpurmc.purpur.event.entity.EntityTeleportHinderedEvent(entity.getBukkitEntity(), entity.isPassenger() ? org.purpurmc.purpur.event.entity.EntityTeleportHinderedEvent.Reason.IS_PASSENGER : org.purpurmc.purpur.event.entity.EntityTeleportHinderedEvent.Reason.IS_VEHICLE, PlayerTeleportEvent.TeleportCause.END_PORTAL).callEvent()) {
+                    this.entityInside(state, world, pos, entity);
+                }
+                return;
+            }
+            // Purpur end
             ResourceKey<Level> resourcekey = world.getTypeKey() == LevelStem.END ? Level.OVERWORLD : Level.END; // CraftBukkit - SPIGOT-6152: send back to main overworld in custom ends
             ServerLevel worldserver = ((ServerLevel) world).getServer().getLevel(resourcekey);
 
diff --git a/src/main/java/net/minecraft/world/level/block/NetherPortalBlock.java b/src/main/java/net/minecraft/world/level/block/NetherPortalBlock.java
index a6ab0d0defc05e56a91084c49897059670a1324b..2c085c4a154cb0f8a1d38453f43474a764398784 100644
--- a/src/main/java/net/minecraft/world/level/block/NetherPortalBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/NetherPortalBlock.java
@@ -84,6 +84,14 @@ public class NetherPortalBlock extends Block {
     public void entityInside(BlockState state, Level world, BlockPos pos, Entity entity) {
         if (!new io.papermc.paper.event.entity.EntityInsideBlockEvent(entity.getBukkitEntity(), org.bukkit.craftbukkit.block.CraftBlock.at(world, pos)).callEvent()) { return; } // Paper
         if (entity.canChangeDimensions()) {
+            // Purpur start
+            if (entity.isPassenger() || entity.isVehicle()) {
+                if (new org.purpurmc.purpur.event.entity.EntityTeleportHinderedEvent(entity.getBukkitEntity(), entity.isPassenger() ? org.purpurmc.purpur.event.entity.EntityTeleportHinderedEvent.Reason.IS_PASSENGER : org.purpurmc.purpur.event.entity.EntityTeleportHinderedEvent.Reason.IS_VEHICLE, org.bukkit.event.player.PlayerTeleportEvent.TeleportCause.NETHER_PORTAL).callEvent()) {
+                    this.entityInside(state, world, pos, entity);
+                }
+                return;
+            }
+            // Purpur end
             // CraftBukkit start - Entity in portal
             EntityPortalEnterEvent event = new EntityPortalEnterEvent(entity.getBukkitEntity(), new org.bukkit.Location(world.getWorld(), pos.getX(), pos.getY(), pos.getZ()));
             world.getCraftServer().getPluginManager().callEvent(event);
diff --git a/src/main/java/net/minecraft/world/level/block/entity/TheEndGatewayBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/TheEndGatewayBlockEntity.java
index 678c4527ddc7032a07e7d74cc160ddcb8810abbf..c370461d434005dc5394053713e039d9f6395bb0 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/TheEndGatewayBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/TheEndGatewayBlockEntity.java
@@ -179,6 +179,14 @@ public class TheEndGatewayBlockEntity extends TheEndPortalBlockEntity {
     public static void teleportEntity(Level world, BlockPos pos, BlockState state, Entity entity, TheEndGatewayBlockEntity blockEntity) {
         if (world instanceof ServerLevel && !blockEntity.isCoolingDown()) {
             if (!entity.canChangeDimensions()) return; // Purpur
+            // Purpur start
+            if (world.purpurConfig.imposeTeleportRestrictionsOnGateways && (entity.isVehicle() || entity.isPassenger())) {
+                if (new org.purpurmc.purpur.event.entity.EntityTeleportHinderedEvent(entity.getBukkitEntity(), entity.isPassenger() ? org.purpurmc.purpur.event.entity.EntityTeleportHinderedEvent.Reason.IS_PASSENGER : org.purpurmc.purpur.event.entity.EntityTeleportHinderedEvent.Reason.IS_VEHICLE, PlayerTeleportEvent.TeleportCause.END_GATEWAY).callEvent()) {
+                    teleportEntity(world, pos, state, entity, blockEntity);
+                }
+                return;
+            }
+            // Purpur end
             ServerLevel worldserver = (ServerLevel) world;
 
             blockEntity.teleportCooldown = 100;
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
index a820a00440510d77fa1839eef485f8ea2de9ff84..eed8be5d6f796450a99f8dd11c673780d8cb5411 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
@@ -586,6 +586,10 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
         // Paper end
 
         if ((!ignorePassengers && this.entity.isVehicle()) || this.entity.isRemoved()) { // Paper - Teleport passenger API
+            // Purpur start
+            if (!entity.isRemoved() && new org.purpurmc.purpur.event.entity.EntityTeleportHinderedEvent(entity.getBukkitEntity(), org.purpurmc.purpur.event.entity.EntityTeleportHinderedEvent.Reason.IS_VEHICLE, cause).callEvent())
+                return teleport(location, cause);
+            // Purpur end
             return false;
         }
 
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index c09bbe22c13f3f05e38e46cf4d9d1e94141623f4..e35de674549b09d9aad4d675e91d66106f54d51b 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1337,6 +1337,10 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         }
 
         if (entity.isVehicle() && !ignorePassengers) { // Paper - Teleport API
+            // Purpur start
+            if (new org.purpurmc.purpur.event.entity.EntityTeleportHinderedEvent(entity.getBukkitEntity(), org.purpurmc.purpur.event.entity.EntityTeleportHinderedEvent.Reason.IS_VEHICLE, cause).callEvent())
+                return teleport(location, cause);
+            // Purpur end
             return false;
         }
 
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index d5a0920338e53d28aa181b4c47555730ea8dc4eb..e7d63ba6ada0ceb79b547acd6b07f4ce3f32c12c 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -119,6 +119,7 @@ public class PurpurWorldConfig {
     public boolean entitiesCanUsePortals = true;
     public boolean entitiesPickUpLootBypassMobGriefing = false;
     public boolean fireballsBypassMobGriefing = false;
+    public boolean imposeTeleportRestrictionsOnGateways = false;
     public boolean milkCuresBadOmen = true;
     public boolean noteBlockIgnoreAbove = false;
     public boolean persistentDroppableEntityDisplayNames = true;
@@ -136,6 +137,7 @@ public class PurpurWorldConfig {
         entitiesCanUsePortals = getBoolean("gameplay-mechanics.entities-can-use-portals", entitiesCanUsePortals);
         entitiesPickUpLootBypassMobGriefing = getBoolean("gameplay-mechanics.entities-pick-up-loot-bypass-mob-griefing", entitiesPickUpLootBypassMobGriefing);
         fireballsBypassMobGriefing = getBoolean("gameplay-mechanics.fireballs-bypass-mob-griefing", fireballsBypassMobGriefing);
+        imposeTeleportRestrictionsOnGateways = getBoolean("gameplay-mechanics.impose-teleport-restrictions-on-gateways", imposeTeleportRestrictionsOnGateways);
         milkCuresBadOmen = getBoolean("gameplay-mechanics.milk-cures-bad-omen", milkCuresBadOmen);
         noteBlockIgnoreAbove = getBoolean("gameplay-mechanics.note-block-ignore-above", noteBlockIgnoreAbove);
         persistentDroppableEntityDisplayNames = getBoolean("gameplay-mechanics.persistent-droppable-entity-display-names", persistentDroppableEntityDisplayNames);