From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Phoenix616 <mail@moep.tv>
Date: Sat, 1 Feb 2020 16:50:39 +0100
Subject: [PATCH] Pillager patrol spawn settings and per player options

This adds config options for defining the spawn chance, spawn delay and
spawn start day as well as toggles for handling the spawn delay and
start day per player. (Based on the time played statistic)
When not per player it will use the Vanilla mechanic of one delay per
world and the world age for the start day.

diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 3db1230c3abe8f4ba321146f8adbff7fadad9362..feadef47940a1eab3ea79236a40ffd3deb2660b2 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -500,8 +500,18 @@ public class PaperWorldConfig {
     }
 
     public boolean disablePillagerPatrols = false;
+    public double patrolSpawnChance = 0.2;
+    public boolean patrolPerPlayerDelay = false;
+    public int patrolDelay = 12000;
+    public boolean patrolPerPlayerStart = false;
+    public int patrolStartDay = 5;
     private void pillagerSettings() {
         disablePillagerPatrols = getBoolean("game-mechanics.disable-pillager-patrols", disablePillagerPatrols);
+        patrolSpawnChance = getDouble("game-mechanics.pillager-patrols.spawn-chance", patrolSpawnChance);
+        patrolPerPlayerDelay = getBoolean("game-mechanics.pillager-patrols.spawn-delay.per-player", patrolPerPlayerDelay);
+        patrolDelay = getInt("game-mechanics.pillager-patrols.spawn-delay.ticks", patrolDelay);
+        patrolPerPlayerStart = getBoolean("game-mechanics.pillager-patrols.start.per-player", patrolPerPlayerStart);
+        patrolStartDay = getInt("game-mechanics.pillager-patrols.start.day", patrolStartDay);
     }
 
     public boolean generateFlatBedrock = false;
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 9815bb19b8210493d549bed5b2baa95331d71469..c16203295915df53f4b332af8235db215dab181d 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -221,6 +221,7 @@ public class ServerPlayer extends Player {
     public boolean wonGame;
     private int containerUpdateDelay; // Paper
     public long loginTime; // Paper
+    public int patrolSpawnDelay; // Paper - per player patrol spawns
     // Paper start - cancellable death event
     public boolean queueHealthUpdatePacket = false;
     public net.minecraft.network.protocol.game.ClientboundSetHealthPacket queuedHealthUpdatePacket;
diff --git a/src/main/java/net/minecraft/world/level/levelgen/PatrolSpawner.java b/src/main/java/net/minecraft/world/level/levelgen/PatrolSpawner.java
index d5a701b2d684bbe18f985adb6bd62e9218d3a0a6..babdbd9c78ff71a12d7bb369603f139cec1602ff 100644
--- a/src/main/java/net/minecraft/world/level/levelgen/PatrolSpawner.java
+++ b/src/main/java/net/minecraft/world/level/levelgen/PatrolSpawner.java
@@ -24,7 +24,7 @@ public class PatrolSpawner implements CustomSpawner {
 
     @Override
     public int tick(ServerLevel world, boolean spawnMonsters, boolean spawnAnimals) {
-        if (world.paperConfig.disablePillagerPatrols) return 0; // Paper
+        if (world.paperConfig.disablePillagerPatrols || world.paperConfig.patrolSpawnChance == 0) return 0; // Paper
         if (!spawnMonsters) {
             return 0;
         } else if (!world.getGameRules().getBoolean(GameRules.RULE_DO_PATROL_SPAWNING)) {
@@ -32,23 +32,51 @@ public class PatrolSpawner implements CustomSpawner {
         } else {
             Random random = world.random;
 
-            --this.nextTick;
-            if (this.nextTick > 0) {
+            // Paper start - Patrol settings
+            // Random player selection moved up for per player spawning and configuration
+            int j = world.players().size();
+            if (j < 1) {
                 return 0;
+            }
+
+            net.minecraft.server.level.ServerPlayer entityhuman = world.players().get(random.nextInt(j));
+            if (entityhuman.isSpectator()) {
+                return 0;
+            }
+
+            int patrolSpawnDelay;
+            if (world.paperConfig.patrolPerPlayerDelay) {
+                --entityhuman.patrolSpawnDelay;
+                patrolSpawnDelay = entityhuman.patrolSpawnDelay;
             } else {
-                this.nextTick += 12000 + random.nextInt(1200);
-                long i = world.getDayTime() / 24000L;
+                this.nextTick--;
+                patrolSpawnDelay = this.nextTick;
+            }
+
+            if (patrolSpawnDelay > 0) {
+                return 0;
+            } else {
+                long days;
+                if (world.paperConfig.patrolPerPlayerStart) {
+                    days = entityhuman.getStats().getValue(net.minecraft.stats.Stats.CUSTOM.get(net.minecraft.stats.Stats.PLAY_TIME)) / 24000L; // PLAY_ONE_MINUTE is actually counting in ticks, a misnomer by Mojang
+                } else {
+                    days = world.getDayTime() / 24000L;
+                }
+                if (world.paperConfig.patrolPerPlayerDelay) {
+                    entityhuman.patrolSpawnDelay += world.paperConfig.patrolDelay + random.nextInt(1200);
+                } else {
+                    this.nextTick += world.paperConfig.patrolDelay + random.nextInt(1200);
+                }
 
-                if (i >= 5L && world.isDay()) {
-                    if (random.nextInt(5) != 0) {
+                if (days >= world.paperConfig.patrolStartDay && world.isDay()) {
+                    if (random.nextDouble() >= world.paperConfig.patrolSpawnChance) {
+                        // Paper end
                         return 0;
                     } else {
-                        int j = world.players().size();
 
                         if (j < 1) {
                             return 0;
                         } else {
-                            Player entityhuman = (Player) world.players().get(random.nextInt(j));
 
                             if (entityhuman.isSpectator()) {
                                 return 0;