papermc/Spigot-Server-Patches/0039-Configurable-mob-spawner-tick-rate.patch

From 65ef96c994b5143cb8fffada60fade2fa6ce842a Mon Sep 17 00:00:00 2001
From: Sudzzy <originmc@outlook.com>
Date: Wed, 2 Mar 2016 15:03:53 -0600
Subject: [PATCH] Configurable mob spawner tick rate


diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 70b02f020..f431000d1 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -212,4 +212,9 @@ public class PaperWorldConfig {
     private void disableIceAndSnow(){
         disableIceAndSnow = getBoolean("disable-ice-and-snow", false);
     }
+
+    public int mobSpawnerTickRate;
+    private void mobSpawnerTickRate() {
+        mobSpawnerTickRate = getInt("mob-spawner-tick-rate", 1);
+    }
 }
diff --git a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
index 0149726ea..a5261d70b 100644
--- a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
+++ b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
@@ -19,6 +19,7 @@ public abstract class MobSpawnerAbstract {
     public int maxNearbyEntities = 6; // CraftBukkit private -> public
     public int requiredPlayerRange = 16; // CraftBukkit private -> public
     public int spawnRange = 4; // CraftBukkit private -> public
+    private int tickDelay = 0; // Paper
 
     public MobSpawnerAbstract() {}
 
@@ -44,6 +45,10 @@ public abstract class MobSpawnerAbstract {
     }
 
     public void c() {
+        // Paper start - Configurable mob spawner tick rate
+        if (spawnDelay > 0 && --tickDelay > 0) return;
+        tickDelay = this.a().paperConfig.mobSpawnerTickRate;
+        // Paper end
         if (!this.h()) {
             this.e = this.d;
         } else {
@@ -57,18 +62,18 @@ public abstract class MobSpawnerAbstract {
                 this.a().addParticle(EnumParticle.SMOKE_NORMAL, d0, d1, d2, 0.0D, 0.0D, 0.0D, new int[0]);
                 this.a().addParticle(EnumParticle.FLAME, d0, d1, d2, 0.0D, 0.0D, 0.0D, new int[0]);
                 if (this.spawnDelay > 0) {
-                    --this.spawnDelay;
+                    this.spawnDelay -= tickDelay; // Paper
                 }
 
                 this.e = this.d;
                 this.d = (this.d + (double) (1000.0F / ((float) this.spawnDelay + 200.0F))) % 360.0D;
             } else {
-                if (this.spawnDelay == -1) {
+                if (this.spawnDelay < -tickDelay) { // Paper
                     this.i();
                 }
 
                 if (this.spawnDelay > 0) {
-                    --this.spawnDelay;
+                    this.spawnDelay -= tickDelay; // Paper
                     return;
                 }
 
-- 
2.14.3