From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Wed, 19 May 2021 18:59:10 -0700
Subject: [PATCH] Add PlayerSetSpawnEvent


diff --git a/src/main/java/net/minecraft/server/commands/SetSpawnCommand.java b/src/main/java/net/minecraft/server/commands/SetSpawnCommand.java
index ce1c7512cc368e196ae94ee22c6a228c975b4980..1e41de9523c5fa3b9cfced798a5c35a24ec9d349 100644
--- a/src/main/java/net/minecraft/server/commands/SetSpawnCommand.java
+++ b/src/main/java/net/minecraft/server/commands/SetSpawnCommand.java
@@ -32,9 +32,21 @@ public class SetSpawnCommand {
     private static int setSpawn(CommandSourceStack source, Collection<ServerPlayer> targets, BlockPos pos, float angle) {
         ResourceKey<Level> resourceKey = source.getLevel().dimension();
 
+        final Collection<ServerPlayer> actualTargets = new java.util.ArrayList<>(); // Paper
         for(ServerPlayer serverPlayer : targets) {
-            serverPlayer.setRespawnPosition(resourceKey, pos, angle, true, false);
+            // Paper start - PlayerSetSpawnEvent
+            if (serverPlayer.setRespawnPosition(resourceKey, pos, angle, true, false, com.destroystokyo.paper.event.player.PlayerSetSpawnEvent.Cause.COMMAND)) {
+                actualTargets.add(serverPlayer);
+            }
+            // Paper end
         }
+        // Paper start
+        if (actualTargets.isEmpty()) {
+            return 0;
+        } else {
+            targets = actualTargets;
+        }
+        // Paper end
 
         String string = resourceKey.location().toString();
         if (targets.size() == 1) {
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index c8d55095c20ab5c5b4eb1767aa4b1210d0aa5cda..95e268a3d50bbcea3e5a2273df6e92d8364970ce 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -1296,7 +1296,7 @@ public class ServerPlayer extends Player {
             } else if (this.bedBlocked(blockposition, enumdirection)) {
                 return Either.left(Player.BedSleepingProblem.OBSTRUCTED);
             } else {
-                this.setRespawnPosition(this.level.dimension(), blockposition, this.getYRot(), false, true);
+                this.setRespawnPosition(this.level.dimension(), blockposition, this.getYRot(), false, true, com.destroystokyo.paper.event.player.PlayerSetSpawnEvent.Cause.BED); // Paper - PlayerSetSpawnEvent
                 if (this.level.isDay()) {
                     return Either.left(Player.BedSleepingProblem.NOT_POSSIBLE_NOW);
                 } else {
@@ -2154,12 +2154,33 @@ public class ServerPlayer extends Player {
         return this.respawnForced;
     }
 
+    @Deprecated // Paper
     public void setRespawnPosition(ResourceKey<Level> dimension, @Nullable BlockPos pos, float angle, boolean forced, boolean sendMessage) {
+        // Paper start
+        this.setRespawnPosition(dimension, pos, angle, forced, sendMessage, com.destroystokyo.paper.event.player.PlayerSetSpawnEvent.Cause.UNKNOWN);
+    }
+    public boolean setRespawnPosition(ResourceKey<Level> dimension, @Nullable BlockPos pos, float angle, boolean forced, boolean sendMessage, com.destroystokyo.paper.event.player.PlayerSetSpawnEvent.Cause cause) {
+        Location spawnLoc = null;
+        boolean willNotify = false;
         if (pos != null) {
             boolean flag2 = pos.equals(this.respawnPosition) && dimension.equals(this.respawnDimension);
+            spawnLoc = io.papermc.paper.util.MCUtil.toLocation(this.getServer().getLevel(dimension), pos);
+            spawnLoc.setYaw(angle);
+            willNotify = sendMessage && !flag2;
+        }
+        com.destroystokyo.paper.event.player.PlayerSetSpawnEvent event = new com.destroystokyo.paper.event.player.PlayerSetSpawnEvent(this.getBukkitEntity(), cause, spawnLoc, forced, willNotify, willNotify ? net.kyori.adventure.text.Component.translatable("block.minecraft.set_spawn") : null);
+        if (!event.callEvent()) {
+            return false;
+        }
+        if (event.getLocation() != null) {
+            dimension = event.getLocation().getWorld() != null ? ((CraftWorld) event.getLocation().getWorld()).getHandle().dimension() : dimension;
+            pos = io.papermc.paper.util.MCUtil.toBlockPosition(event.getLocation());
+            angle = (float) event.getLocation().getYaw();
+            forced = event.isForced();
+            // Paper end
 
-            if (sendMessage && !flag2) {
-                this.sendSystemMessage(Component.translatable("block.minecraft.set_spawn"));
+            if (event.willNotifyPlayer() && event.getNotification() != null) { // Paper
+                this.sendSystemMessage(PaperAdventure.asVanilla(event.getNotification())); // Paper
             }
 
             this.respawnPosition = pos;
@@ -2173,6 +2194,7 @@ public class ServerPlayer extends Player {
             this.respawnForced = false;
         }
 
+        return true; // Paper
     }
 
     public void trackChunk(ChunkPos chunkPos, Packet<?> chunkDataPacket) {
diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index 20ba3b4fc4781205b04eab3670989b7634143e03..f734c7ea8c6ce468882ea758a358a8f19a16dcdb 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -910,13 +910,13 @@ public abstract class PlayerList {
                         f1 = (float) Mth.wrapDegrees(Mth.atan2(vec3d1.z, vec3d1.x) * 57.2957763671875D - 90.0D);
                     }
 
-                    entityplayer1.setRespawnPosition(worldserver1.dimension(), blockposition, f, flag1, false);
+                    entityplayer1.setRespawnPosition(worldserver1.dimension(), blockposition, f, flag1, false, com.destroystokyo.paper.event.player.PlayerSetSpawnEvent.Cause.PLAYER_RESPAWN); // Paper - PlayerSetSpawnEvent
                     flag2 = !flag && flag3;
                     isBedSpawn = true;
                     location = new Location(worldserver1.getWorld(), vec3d.x, vec3d.y, vec3d.z, f1, 0.0F);
                 } else if (blockposition != null) {
                     entityplayer1.connection.send(new ClientboundGameEventPacket(ClientboundGameEventPacket.NO_RESPAWN_BLOCK_AVAILABLE, 0.0F));
-                    entityplayer1.setRespawnPosition(null, null, 0f, false, false); // CraftBukkit - SPIGOT-5988: Clear respawn location when obstructed
+                    entityplayer1.setRespawnPosition(null, null, 0f, false, false, com.destroystokyo.paper.event.player.PlayerSetSpawnEvent.Cause.PLAYER_RESPAWN); // CraftBukkit - SPIGOT-5988: Clear respawn location when obstructed // Paper - PlayerSetSpawnEvent
                 }
             }
 
diff --git a/src/main/java/net/minecraft/world/level/block/RespawnAnchorBlock.java b/src/main/java/net/minecraft/world/level/block/RespawnAnchorBlock.java
index 37e111589134d80fdfd7a04d624b8c1d58a2d664..53b35f003034e7f4c9dd8ccfaf77389163009453 100644
--- a/src/main/java/net/minecraft/world/level/block/RespawnAnchorBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/RespawnAnchorBlock.java
@@ -72,9 +72,14 @@ public class RespawnAnchorBlock extends Block {
             if (!world.isClientSide) {
                 ServerPlayer serverPlayer = (ServerPlayer)player;
                 if (serverPlayer.getRespawnDimension() != world.dimension() || !pos.equals(serverPlayer.getRespawnPosition())) {
-                    serverPlayer.setRespawnPosition(world.dimension(), pos, 0.0F, false, true);
+                    if (serverPlayer.setRespawnPosition(world.dimension(), pos, 0.0F, false, true, com.destroystokyo.paper.event.player.PlayerSetSpawnEvent.Cause.RESPAWN_ANCHOR)) { // Paper - PlayerSetSpawnEvent
                     world.playSound((Player)null, (double)pos.getX() + 0.5D, (double)pos.getY() + 0.5D, (double)pos.getZ() + 0.5D, SoundEvents.RESPAWN_ANCHOR_SET_SPAWN, SoundSource.BLOCKS, 1.0F, 1.0F);
                     return InteractionResult.SUCCESS;
+                    // Paper start - handle failed set spawn
+                    } else {
+                        return InteractionResult.FAIL;
+                    }
+                    // Paper end
                 }
             }
 
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 49501e3cb2e604655f0c6eba38d07855b7632cbf..ea2316ffa7b494f3f5f102b44fc8d3ec6d9a4131 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1291,9 +1291,9 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
     @Override
     public void setBedSpawnLocation(Location location, boolean override) {
         if (location == null) {
-            this.getHandle().setRespawnPosition(null, null, 0.0F, override, false);
+            this.getHandle().setRespawnPosition(null, null, 0.0F, override, false, com.destroystokyo.paper.event.player.PlayerSetSpawnEvent.Cause.PLUGIN); // Paper - PlayerSetSpawnEvent
         } else {
-            this.getHandle().setRespawnPosition(((CraftWorld) location.getWorld()).getHandle().dimension(), new BlockPos(location.getBlockX(), location.getBlockY(), location.getBlockZ()), location.getYaw(), override, false);
+            this.getHandle().setRespawnPosition(((CraftWorld) location.getWorld()).getHandle().dimension(), new BlockPos(location.getBlockX(), location.getBlockY(), location.getBlockZ()), location.getYaw(), override, false, com.destroystokyo.paper.event.player.PlayerSetSpawnEvent.Cause.PLUGIN); // Paper - PlayerSetSpawnEvent
         }
     }
 
