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 c9d9461695d95e227f41b894b42b8be8d9d198cd..e2b71ffd6057dcc84e4e0910fddd24c50ef9d38d 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -505,8 +505,18 @@ 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 49f272d37fb59fd4c13466217389e626b6ca1e2d..f0c9610fe9e2475c13f897cb2d77978a0caa53a2 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;