From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Brokkonaut <hannos17@gmx.de>
Date: Tue, 31 Oct 2017 03:26:18 +0100
Subject: [PATCH] Send attack SoundEffects only to players who can see the
 attacker


diff --git a/src/main/java/net/minecraft/world/entity/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java
index e292c1ab45d2618c4e852875107ec1819dba85c4..259ec0dea938758f43560b1ed7f46c1042984774 100644
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -1243,7 +1243,7 @@ public abstract class Player extends LivingEntity {
 
                         i += EnchantmentHelper.getKnockbackBonus(this);
                         if (this.isSprinting() && flag) {
-                            this.level().playSound((Player) null, this.getX(), this.getY(), this.getZ(), SoundEvents.PLAYER_ATTACK_KNOCKBACK, this.getSoundSource(), 1.0F, 1.0F);
+                            sendSoundEffect(this, this.getX(), this.getY(), this.getZ(), SoundEvents.PLAYER_ATTACK_KNOCKBACK, this.getSoundSource(), 1.0F, 1.0F); // Paper - send while respecting visibility
                             ++i;
                             flag1 = true;
                         }
@@ -1318,7 +1318,7 @@ public abstract class Player extends LivingEntity {
                                     }
                                 }
 
-                                this.level().playSound((Player) null, this.getX(), this.getY(), this.getZ(), SoundEvents.PLAYER_ATTACK_SWEEP, this.getSoundSource(), 1.0F, 1.0F);
+                                sendSoundEffect(this, this.getX(), this.getY(), this.getZ(), SoundEvents.PLAYER_ATTACK_SWEEP, this.getSoundSource(), 1.0F, 1.0F); // Paper - send while respecting visibility
                                 this.sweepAttack();
                             }
 
@@ -1346,15 +1346,15 @@ public abstract class Player extends LivingEntity {
                             }
 
                             if (flag2) {
-                                this.level().playSound((Player) null, this.getX(), this.getY(), this.getZ(), SoundEvents.PLAYER_ATTACK_CRIT, this.getSoundSource(), 1.0F, 1.0F);
+                                sendSoundEffect(this, this.getX(), this.getY(), this.getZ(), SoundEvents.PLAYER_ATTACK_CRIT, this.getSoundSource(), 1.0F, 1.0F); // Paper - send while respecting visibility
                                 this.crit(target);
                             }
 
                             if (!flag2 && !flag3) {
                                 if (flag) {
-                                    this.level().playSound((Player) null, this.getX(), this.getY(), this.getZ(), SoundEvents.PLAYER_ATTACK_STRONG, this.getSoundSource(), 1.0F, 1.0F);
+                                    sendSoundEffect(this, this.getX(), this.getY(), this.getZ(), SoundEvents.PLAYER_ATTACK_STRONG, this.getSoundSource(), 1.0F, 1.0F); // Paper - send while respecting visibility
                                 } else {
-                                    this.level().playSound((Player) null, this.getX(), this.getY(), this.getZ(), SoundEvents.PLAYER_ATTACK_WEAK, this.getSoundSource(), 1.0F, 1.0F);
+                                    sendSoundEffect(this, this.getX(), this.getY(), this.getZ(), SoundEvents.PLAYER_ATTACK_WEAK, this.getSoundSource(), 1.0F, 1.0F); // Paper - send while respecting visibility
                                 }
                             }
 
@@ -1406,7 +1406,7 @@ public abstract class Player extends LivingEntity {
 
                             this.causeFoodExhaustion(this.level().spigotConfig.combatExhaustion, EntityExhaustionEvent.ExhaustionReason.ATTACK); // CraftBukkit - EntityExhaustionEvent // Spigot - Change to use configurable value
                         } else {
-                            this.level().playSound((Player) null, this.getX(), this.getY(), this.getZ(), SoundEvents.PLAYER_ATTACK_NODAMAGE, this.getSoundSource(), 1.0F, 1.0F);
+                            sendSoundEffect(this, this.getX(), this.getY(), this.getZ(), SoundEvents.PLAYER_ATTACK_NODAMAGE, this.getSoundSource(), 1.0F, 1.0F); // Paper - send while respecting visibility
                             if (flag4) {
                                 target.clearFire();
                             }
@@ -1812,6 +1812,14 @@ public abstract class Player extends LivingEntity {
     public int getXpNeededForNextLevel() {
         return this.experienceLevel >= 30 ? 112 + (this.experienceLevel - 30) * 9 : (this.experienceLevel >= 15 ? 37 + (this.experienceLevel - 15) * 5 : 7 + this.experienceLevel * 2);
     }
+    // Paper start - send while respecting visibility
+    private static void sendSoundEffect(Player fromEntity, double x, double y, double z, SoundEvent soundEffect, SoundSource soundCategory, float volume, float pitch) {
+        fromEntity.level().playSound(fromEntity, x, y, z, soundEffect, soundCategory, volume, pitch); // This will not send the effect to the entity himself
+        if (fromEntity instanceof ServerPlayer) {
+            ((ServerPlayer) fromEntity).connection.send(new net.minecraft.network.protocol.game.ClientboundSoundPacket(net.minecraft.core.registries.BuiltInRegistries.SOUND_EVENT.wrapAsHolder(soundEffect), soundCategory, x, y, z, volume, pitch, fromEntity.random.nextLong()));
+        }
+    }
+    // Paper end - send while respecting visibility
 
     // CraftBukkit start
     public void causeFoodExhaustion(float exhaustion) {