Purpur/patches/server/0039-Implement-AFK-API.patch

From d8129cb81a8dc728e5b962b7bddc345db3281bcc Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Thu, 8 Aug 2019 15:29:15 -0500
Subject: [PATCH] Implement AFK API

---
 .../java/net/minecraft/server/Entity.java     |  1 +
 .../net/minecraft/server/EntityHuman.java     |  9 ++++
 .../net/minecraft/server/EntityPlayer.java    | 43 +++++++++++++++++++
 .../net/minecraft/server/IEntityAccess.java   | 34 ++++++---------
 .../net/minecraft/server/IEntitySelector.java |  2 +
 .../minecraft/server/PlayerConnection.java    | 10 +++++
 .../net/minecraft/server/WorldServer.java     |  4 +-
 .../net/pl3x/purpur/PurpurWorldConfig.java    | 11 +++++
 .../craftbukkit/entity/CraftPlayer.java       | 17 ++++++++
 .../java/org/spigotmc/ActivationRange.java    |  1 +
 src/main/resources/purpur.lang                |  4 +-
 11 files changed, 111 insertions(+), 25 deletions(-)

diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 3bc4327a10..8a2fcb37f9 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -1420,6 +1420,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
         return MathHelper.c(f * f + f1 * f1 + f2 * f2);
     }
 
+    public double getDistanceSquared(double x, double y, double z) { return g(x, y, z); } // Purpur - OBFHELPER
     public double g(double d0, double d1, double d2) {
         double d3 = this.locX() - d0;
         double d4 = this.locY() - d1;
diff --git a/src/main/java/net/minecraft/server/EntityHuman.java b/src/main/java/net/minecraft/server/EntityHuman.java
index 4cf420de0b..1ffe38e151 100644
--- a/src/main/java/net/minecraft/server/EntityHuman.java
+++ b/src/main/java/net/minecraft/server/EntityHuman.java
@@ -86,6 +86,15 @@ public abstract class EntityHuman extends EntityLiving {
     }
     // CraftBukkit end
 
+    // Purpur start
+    public void setAfk(boolean setAfk){
+    }
+
+    public boolean isAfk() {
+        return false;
+    }
+    // Purpur end
+
     public EntityHuman(World world, GameProfile gameprofile) {
         super(EntityTypes.PLAYER, world);
         this.bV = ItemStack.a;
diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index f0639c23c4..2ef9130cb1 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -1627,8 +1627,51 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
 
     public void resetIdleTimer() {
         this.cj = SystemUtils.getMonotonicMillis();
+        setAfk(false); // Purpur
     }
 
+    // Purpur start
+    private boolean isAfk = false;
+
+    @Override
+    public void setAfk(boolean setAfk) {
+        if (this.isAfk == setAfk) {
+            return;
+        }
+
+        net.pl3x.purpur.event.PlayerAFKEvent event = new net.pl3x.purpur.event.PlayerAFKEvent(getBukkitEntity(), setAfk, world.purpurConfig.idleTimeoutKick, LocaleLanguage.getInstance().translateKey("idle.timeout.broadcast." + (setAfk ? "away" : "back")), !Bukkit.isPrimaryThread());
+        if (!event.callEvent() || event.shouldKick()) {
+            return;
+        }
+
+        this.isAfk = setAfk;
+
+        if (!setAfk) {
+            resetIdleTimer();
+        }
+
+        if (event.getBroadcastMsg() != null && !event.getBroadcastMsg().isEmpty()) {
+            server.getPlayerList().sendAll(new PacketPlayOutChat(new ChatMessage(event.getBroadcastMsg(), getScoreboardDisplayName())));
+        }
+
+        if (world.purpurConfig.idleTimeoutUpdateTabList) {
+            getBukkitEntity().setPlayerListName((setAfk ? "[AFK] " : "") + getName());
+        }
+
+        ((WorldServer) world).everyoneSleeping();
+    }
+
+    @Override
+    public boolean isAfk() {
+        return isAfk;
+    }
+
+    @Override
+    public boolean isCollidable(boolean ignoreClimbing) {
+        return !isAfk() && super.isCollidable(ignoreClimbing);
+    }
+    // Purpur end
+
     public ServerStatisticManager getStatisticManager() {
         return this.serverStatisticManager;
     }
diff --git a/src/main/java/net/minecraft/server/IEntityAccess.java b/src/main/java/net/minecraft/server/IEntityAccess.java
index 8996190090..d9f246b874 100644
--- a/src/main/java/net/minecraft/server/IEntityAccess.java
+++ b/src/main/java/net/minecraft/server/IEntityAccess.java
@@ -125,28 +125,18 @@ public interface IEntityAccess {
         return entityhuman;
     }
 
-    default boolean isPlayerNearby(double d0, double d1, double d2, double d3) {
-        Iterator iterator = this.getPlayers().iterator();
-
-        double d4;
-
-        do {
-            EntityHuman entityhuman;
-
-            do {
-                do {
-                    if (!iterator.hasNext()) {
-                        return false;
-                    }
-
-                    entityhuman = (EntityHuman) iterator.next();
-                } while (!IEntitySelector.f.test(entityhuman));
-            } while (!IEntitySelector.b.test(entityhuman));
-
-            d4 = entityhuman.g(d0, d1, d2);
-        } while (d3 >= 0.0D && d4 >= d3 * d3);
-
-        return true;
+    // Purpur start
+    default boolean isPlayerNearby(double x, double y, double z, double distance) {
+        double distanceSq = distance * distance;
+        for (EntityHuman player : getPlayers()) {
+            if (IEntitySelector.notSpectator().test(player) && IEntitySelector.isLivingAlive().test(player) && IEntitySelector.notAfk.test(player)) {
+                if (distance < 0.0D || player.getDistanceSquared(x, y, z) < distanceSq) {
+                    return true;
+                }
+            }
+        }
+        return false;
+        // Purpur end
     }
 
     @Nullable
diff --git a/src/main/java/net/minecraft/server/IEntitySelector.java b/src/main/java/net/minecraft/server/IEntitySelector.java
index e1fdee2794..4665671ef6 100644
--- a/src/main/java/net/minecraft/server/IEntitySelector.java
+++ b/src/main/java/net/minecraft/server/IEntitySelector.java
@@ -7,6 +7,7 @@ import javax.annotation.Nullable;
 public final class IEntitySelector {
 
     public static final Predicate<Entity> a = Entity::isAlive;
+    public static Predicate<EntityLiving> isLivingAlive() { return b; } // Purpur - OBFHELPER
     public static final Predicate<EntityLiving> b = EntityLiving::isAlive;
     public static final Predicate<Entity> c = (entity) -> {
         return entity.isAlive() && !entity.isVehicle() && !entity.isPassenger();
@@ -24,6 +25,7 @@ public final class IEntitySelector {
         return !entity.isSpectator();
     };
     public static Predicate<EntityHuman> isInsomniac = (player) -> MathHelper.clamp(((EntityPlayer) player).getStatisticManager().getStatisticValue(StatisticList.CUSTOM.b(StatisticList.TIME_SINCE_REST)), 1, Integer.MAX_VALUE) >= 72000; // Purpur
+    public static Predicate<EntityHuman> notAfk = (player) -> !player.isAfk(); // Purpur
 
     public static Predicate<Entity> a(double d0, double d1, double d2, double d3) {
         double d4 = d3 * d3;
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index 895e34ed34..f92516069a 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -223,6 +223,12 @@ public class PlayerConnection implements PacketListenerPlayIn {
         }
 
         if (this.player.F() > 0L && this.minecraftServer.getIdleTimeout() > 0 && SystemUtils.getMonotonicMillis() - this.player.F() > (long) (this.minecraftServer.getIdleTimeout() * 1000 * 60)) {
+            // Purpur start
+            this.player.setAfk(true);
+            if (!this.player.world.purpurConfig.idleTimeoutKick) {
+                return;
+            }
+            // Purpur end
             this.player.resetIdleTimer(); // CraftBukkit - SPIGOT-854
             this.disconnect(new ChatMessage("multiplayer.disconnect.idling", new Object[0]));
         }
@@ -439,6 +445,8 @@ public class PlayerConnection implements PacketListenerPlayIn {
                     this.lastYaw = to.getYaw();
                     this.lastPitch = to.getPitch();
 
+                    if (!to.getWorld().getUID().equals(from.getWorld().getUID()) || to.getBlockX() != from.getBlockX() || to.getBlockY() != from.getBlockY() || to.getBlockZ() != from.getBlockZ()) this.player.resetIdleTimer(); // Purpur
+
                     // Skip the first time we do this
                     if (true) { // Spigot - don't skip any move events
                         Location oldTo = to.clone();
@@ -1108,6 +1116,8 @@ public class PlayerConnection implements PacketListenerPlayIn {
                                 this.lastYaw = to.getYaw();
                                 this.lastPitch = to.getPitch();
 
+                                if (!to.getWorld().getUID().equals(from.getWorld().getUID()) || to.getBlockX() != from.getBlockX() || to.getBlockY() != from.getBlockY() || to.getBlockZ() != from.getBlockZ()) this.player.resetIdleTimer(); // Purpur
+
                                 // Skip the first time we do this
                                 if (from.getX() != Double.MAX_VALUE) {
                                     Location oldTo = to.clone();
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 67448b6e10..4f69818a6b 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -393,7 +393,7 @@ public class WorldServer extends World {
         }
 
         if (this.everyoneSleeping && this.players.stream().noneMatch((entityplayer) -> {
-            return !entityplayer.isSpectator() && !entityplayer.isDeeplySleeping() && !entityplayer.fauxSleeping; // CraftBukkit
+            return !entityplayer.isSpectator() && !entityplayer.isDeeplySleeping() && !entityplayer.fauxSleeping && !(purpurConfig.idleTimeoutCountAsSleeping && entityplayer.isAfk()); // CraftBukkit // Purpur
         })) {
             // CraftBukkit start
             long l = this.worldData.getDayTime() + 24000L;
@@ -714,7 +714,7 @@ public class WorldServer extends World {
             while (iterator.hasNext()) {
                 EntityPlayer entityplayer = (EntityPlayer) iterator.next();
 
-                if (entityplayer.isSpectator() || (entityplayer.fauxSleeping && !entityplayer.isSleeping())) { // CraftBukkit
+                if (entityplayer.isSpectator() || (entityplayer.fauxSleeping && !entityplayer.isSleeping()) || (purpurConfig.idleTimeoutCountAsSleeping && entityplayer.isAfk())) { // CraftBukkit // Purpur
                     ++i;
                 } else if (entityplayer.isSleeping()) {
                     ++j;
diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
index c6bf9395c1..76f8c8fed1 100644
--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
@@ -138,6 +138,17 @@ public class PurpurWorldConfig {
         disableDropsOnCrammingDeath = getBoolean("gameplay-mechanics.disable-drops-on-cramming-death", disableDropsOnCrammingDeath);
     }
 
+    public boolean idleTimeoutKick = true;
+    public boolean idleTimeoutTickNearbyEntities = true;
+    public boolean idleTimeoutCountAsSleeping = false;
+    public boolean idleTimeoutUpdateTabList = false;
+    private void idleTimeoutSettings() {
+        idleTimeoutKick = getBoolean("gameplay-mechanics.player.idle-timeout.kick-if-idle", idleTimeoutKick);
+        idleTimeoutTickNearbyEntities = getBoolean("gameplay-mechanics.player.idle-timeout.tick-nearby-entities", idleTimeoutTickNearbyEntities);
+        idleTimeoutCountAsSleeping = getBoolean("gameplay-mechanics.player.idle-timeout.count-as-sleeping", idleTimeoutCountAsSleeping);
+        idleTimeoutUpdateTabList = getBoolean("gameplay-mechanics.player.idle-timeout.update-tab-list", idleTimeoutUpdateTabList);
+    }
+
     public boolean batRidable = false;
     public boolean batRidableInWater = false;
     public boolean batRequireShiftToMount = true;
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index b76379a17c..b7571d0866 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -2079,4 +2079,21 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         return spigot;
     }
     // Spigot end
+
+    // Purpur start
+    @Override
+    public boolean isAfk() {
+        return getHandle().isAfk();
+    }
+
+    @Override
+    public void setAfk(boolean setAfk) {
+        getHandle().setAfk(setAfk);
+    }
+
+    @Override
+    public void resetIdleTimer() {
+        getHandle().resetIdleTimer();
+    }
+    // Purpur end
 }
diff --git a/src/main/java/org/spigotmc/ActivationRange.java b/src/main/java/org/spigotmc/ActivationRange.java
index 795817177a..17c4d7ec9b 100644
--- a/src/main/java/org/spigotmc/ActivationRange.java
+++ b/src/main/java/org/spigotmc/ActivationRange.java
@@ -146,6 +146,7 @@ public class ActivationRange
         {
 
             player.activatedTick = MinecraftServer.currentTick;
+            if (!player.world.purpurConfig.idleTimeoutTickNearbyEntities && player.isAfk()) continue; // Purpur
             maxBB = player.getBoundingBox().grow( maxRange, 256, maxRange );
             ActivationType.MISC.boundingBox = player.getBoundingBox().grow( miscActivationRange, 256, miscActivationRange );
             ActivationType.RAIDER.boundingBox = player.getBoundingBox().grow( raiderActivationRange, 256, raiderActivationRange );
diff --git a/src/main/resources/purpur.lang b/src/main/resources/purpur.lang
index 7125c0477e..e925e1374d 100644
--- a/src/main/resources/purpur.lang
+++ b/src/main/resources/purpur.lang
@@ -1,3 +1,5 @@
 {
-  "cannot.ride.mob": "You cannot mount that mob"
+  "cannot.ride.mob": "You cannot mount that mob",
+  "idle.timeout.broadcast.away": "§e§o%s is now AFK",
+  "idle.timeout.broadcast.back": "§e§o%s is no longer AFK"
 }
-- 
2.24.0