Do not allow chunk unloading outside of the regular tick loop

Allowing chunk loading to occur at any point via purgeUnload()
introduces possible undesirable behavior to occur recursively
inside the chunk system.

patches/server/0988-Moonrise-optimisation-patches.patch

@@ -25193,7 +25193,7 @@ index 3dc1daa3c6a04d3ff1a2353773b465fc380994a2..3575782f13a7f3c52e64dc5046803305
      }
  }
 diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-index 60f678c26fb5144386d8697ddfd5b6d841563b6f..17fafa62f21e505f9f77cf486f7f766a404f7c31 100644
+index 60f678c26fb5144386d8697ddfd5b6d841563b6f..9ccb3ffc375298fda4dca97803e65e39df8493eb 100644
 --- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 +++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 @@ -46,7 +46,7 @@ import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemp
@@ -25490,7 +25490,7 @@ index 60f678c26fb5144386d8697ddfd5b6d841563b6f..17fafa62f21e505f9f77cf486f7f766a
          try (co.aikar.timings.Timing timed = level.timings.chunkSaveData.startTiming()) { // Paper - Timings
          this.chunkMap.saveAllChunks(flush);
          } // Paper - Timings
-@@ -361,12 +368,7 @@ public class ServerChunkCache extends ChunkSource {
+@@ -361,16 +368,12 @@ public class ServerChunkCache extends ChunkSource {
      }
  
      public void close(boolean save) throws IOException {
@@ -25504,7 +25504,12 @@ index 60f678c26fb5144386d8697ddfd5b6d841563b6f..17fafa62f21e505f9f77cf486f7f766a
      }
  
      // CraftBukkit start - modelled on below
-@@ -394,6 +396,7 @@ public class ServerChunkCache extends ChunkSource {
+     public void purgeUnload() {
++        if (true) return; // Paper - rewrite chunk system
+         this.level.getProfiler().push("purge");
+         this.distanceManager.purgeStaleTickets();
+         this.runDistanceManagerUpdates();
+@@ -394,6 +397,7 @@ public class ServerChunkCache extends ChunkSource {
          this.level.getProfiler().popPush("chunks");
          if (tickChunks) {
              this.level.timings.chunks.startTiming(); // Paper - timings
@@ -25512,7 +25517,7 @@ index 60f678c26fb5144386d8697ddfd5b6d841563b6f..17fafa62f21e505f9f77cf486f7f766a
              this.tickChunks();
              this.level.timings.chunks.stopTiming(); // Paper - timings
              this.chunkMap.tick();
-@@ -408,6 +411,7 @@ public class ServerChunkCache extends ChunkSource {
+@@ -408,6 +412,7 @@ public class ServerChunkCache extends ChunkSource {
      }
  
      private void tickChunks() {
@@ -25520,7 +25525,7 @@ index 60f678c26fb5144386d8697ddfd5b6d841563b6f..17fafa62f21e505f9f77cf486f7f766a
          long i = this.level.getGameTime();
          long j = i - this.lastInhabitedUpdate;
  
-@@ -417,18 +421,29 @@ public class ServerChunkCache extends ChunkSource {
+@@ -417,18 +422,29 @@ public class ServerChunkCache extends ChunkSource {
  
              gameprofilerfiller.push("pollingChunks");
              gameprofilerfiller.push("filteringLoadedChunks");
@@ -25558,7 +25563,7 @@ index 60f678c26fb5144386d8697ddfd5b6d841563b6f..17fafa62f21e505f9f77cf486f7f766a
  
              if (this.level.tickRateManager().runsNormally()) {
                  gameprofilerfiller.popPush("naturalSpawnCount");
-@@ -460,14 +475,19 @@ public class ServerChunkCache extends ChunkSource {
+@@ -460,14 +476,19 @@ public class ServerChunkCache extends ChunkSource {
                      LevelChunk chunk1 = chunkproviderserver_a.chunk;
                      ChunkPos chunkcoordintpair = chunk1.getPos();
  
@@ -25580,7 +25585,7 @@ index 60f678c26fb5144386d8697ddfd5b6d841563b6f..17fafa62f21e505f9f77cf486f7f766a
                          }
                      }
                  }
-@@ -482,22 +502,35 @@ public class ServerChunkCache extends ChunkSource {
+@@ -482,22 +503,35 @@ public class ServerChunkCache extends ChunkSource {
              }
  
              gameprofilerfiller.popPush("broadcast");
@@ -25625,7 +25630,7 @@ index 60f678c26fb5144386d8697ddfd5b6d841563b6f..17fafa62f21e505f9f77cf486f7f766a
  
      }
  
-@@ -591,6 +624,12 @@ public class ServerChunkCache extends ChunkSource {
+@@ -591,6 +625,12 @@ public class ServerChunkCache extends ChunkSource {
          this.chunkMap.setServerViewDistance(watchDistance);
      }
  
@@ -25638,7 +25643,7 @@ index 60f678c26fb5144386d8697ddfd5b6d841563b6f..17fafa62f21e505f9f77cf486f7f766a
      public void setSimulationDistance(int simulationDistance) {
          this.distanceManager.updateSimulationDistance(simulationDistance);
      }
-@@ -669,21 +708,19 @@ public class ServerChunkCache extends ChunkSource {
+@@ -669,21 +709,19 @@ public class ServerChunkCache extends ChunkSource {
          @Override
          // CraftBukkit start - process pending Chunk loadCallback() and unloadCallback() after each run task
          public boolean pollTask() {

patches/server/0998-Optional-per-player-mob-spawns.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Optional per player mob spawns
 
 
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index edb36dee707433d4f9419aef6ac6cc0bec5f285e..c282566ee45d79b4fb3297989e054c803873a294 100644
+index f69a769b45be94e990976bb2b3d51ea0cd26a052..328b04fc63fb6d764298acc15f75d4760db80f81 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
 @@ -223,8 +223,26 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
@@ -37,10 +37,10 @@ index edb36dee707433d4f9419aef6ac6cc0bec5f285e..c282566ee45d79b4fb3297989e054c80
      // Paper end
  
 diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-index 17fafa62f21e505f9f77cf486f7f766a404f7c31..2ed9a088d0fd56043d161909ce8e0df683a6413a 100644
+index 9ccb3ffc375298fda4dca97803e65e39df8493eb..e18c3e08f9fbfe17c797c1f96dce1b86fa41fab6 100644
 --- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 +++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-@@ -449,14 +449,26 @@ public class ServerChunkCache extends ChunkSource implements ca.spottedleaf.moon
+@@ -450,14 +450,26 @@ public class ServerChunkCache extends ChunkSource implements ca.spottedleaf.moon
                  gameprofilerfiller.popPush("naturalSpawnCount");
                  this.level.timings.countNaturalMobs.startTiming(); // Paper - timings
                  int k = this.distanceManager.getNaturalSpawnChunkCount();

patches/server/1002-Improve-cancelling-PreCreatureSpawnEvent-with-per-pl.patch

@@ -6,7 +6,7 @@ Subject: [PATCH] Improve cancelling PreCreatureSpawnEvent with per player mob
 
 
 diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
-index c282566ee45d79b4fb3297989e054c803873a294..dc64227e3b0d7855ef8870935aa437b78eea2407 100644
+index 328b04fc63fb6d764298acc15f75d4760db80f81..a183414631a2e640f68370772fe59110c30be98c 100644
 --- a/src/main/java/net/minecraft/server/level/ChunkMap.java
 +++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
 @@ -240,8 +240,25 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
@@ -37,10 +37,10 @@ index c282566ee45d79b4fb3297989e054c803873a294..dc64227e3b0d7855ef8870935aa437b7
      }
      // Paper end
 diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-index 2ed9a088d0fd56043d161909ce8e0df683a6413a..cdb9160244cc69acd36ac9afcfe109a15ab2ab58 100644
+index e18c3e08f9fbfe17c797c1f96dce1b86fa41fab6..4a5dc7fd4eb1a7ab1ec371f0f107de882f88149c 100644
 --- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
 +++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
-@@ -455,7 +455,17 @@ public class ServerChunkCache extends ChunkSource implements ca.spottedleaf.moon
+@@ -456,7 +456,17 @@ public class ServerChunkCache extends ChunkSource implements ca.spottedleaf.moon
                  if ((this.spawnFriendlies || this.spawnEnemies) && this.level.paperConfig().entities.spawning.perPlayerMobSpawns) { // don't count mobs when animals and monsters are disabled
                      // re-set mob counts
                      for (ServerPlayer player : this.level.players) {