preload mob spawning position

2025-12-23 17:09:29 +00:00 · 2025-06-04 21:34:07 +09:00
parent e32cdae1bf
commit 9d6e3ae5ff
8 changed files with 238 additions and 112 deletions
--- a/leaf-server/minecraft-patches/features/0184-optimise-getBiome.patch
+++ b/leaf-server/minecraft-patches/features/0184-optimise-getBiome.patch
@@ -5,7 +5,7 @@ Subject: [PATCH] optimise getBiome


 diff --git a/net/minecraft/advancements/critereon/LocationPredicate.java b/net/minecraft/advancements/critereon/LocationPredicate.java
-index a26a5311f87873e0d4d26fda9cb8956a32ee81e8..9405f1f211db3fa2d313429866de454ede64d95b 100644
+index a26a5311f87873e0d4d26fda9cb8956a32ee81e8..65e4315cce35814c60b21bbd5baea2ffac82162c 100644
 --- a/net/minecraft/advancements/critereon/LocationPredicate.java
 +++ b/net/minecraft/advancements/critereon/LocationPredicate.java
@@ -49,7 +49,7 @@ public record LocationPredicate(
@@ -13,7 +13,7 @@ index a26a5311f87873e0d4d26fda9cb8956a32ee81e8..9405f1f211db3fa2d313429866de454e
             BlockPos blockPos = BlockPos.containing(x, y, z);
             boolean isLoaded = level.isLoaded(blockPos);
 -            return (!this.biomes.isPresent() || isLoaded && this.biomes.get().contains(level.getBiome(blockPos)))
-+            return (!this.biomes.isPresent() || isLoaded && this.biomes.get().contains(level.getBiomeCached(blockPos))) // Leaf - cache getBiome
+            return (!this.biomes.isPresent() || isLoaded && this.biomes.get().contains(org.dreeam.leaf.config.modules.opt.OptimizeBiome.advancement ? level.getBiomeCached(blockPos) : level.getBiome(blockPos))) // Leaf - cache getBiome
                 && (!this.structures.isPresent() || isLoaded && level.structureManager().getStructureWithPieceAt(blockPos, this.structures.get()).isValid())
                 && (!this.smokey.isPresent() || isLoaded && this.smokey.get() == CampfireBlock.isSmokeyPos(level, blockPos))
                 && (!this.light.isPresent() || this.light.get().matches(level, blockPos))
@@ -35,7 +35,7 @@ index 26c8c1e5598daf3550aef05b12218c47bda6618b..91b2fc5b2da6566b05fef1111665b895
         int floor = Mth.floor(aabb.minX);
         int floor1 = Mth.floor(aabb.maxX);
 diff --git a/net/minecraft/world/level/NaturalSpawner.java b/net/minecraft/world/level/NaturalSpawner.java
-index ce2621a87dec1befb016b3437ceb2d02ed6d0b75..c0d941af10ffe8c158dab9db40c7c5767b6cfd6e 100644
+index ce2621a87dec1befb016b3437ceb2d02ed6d0b75..9b37b763c6555705f3e256010f508b5a0c2cdb66 100644
 --- a/net/minecraft/world/level/NaturalSpawner.java
 +++ b/net/minecraft/world/level/NaturalSpawner.java
@@ -445,7 +445,7 @@ public final class NaturalSpawner {
@@ -43,7 +43,7 @@ index ce2621a87dec1befb016b3437ceb2d02ed6d0b75..c0d941af10ffe8c158dab9db40c7c576
         ServerLevel level, StructureManager structureManager, ChunkGenerator generator, MobCategory category, RandomSource random, BlockPos pos
     ) {
 -        Holder<Biome> biome = level.getBiome(pos);
-+        Holder<Biome> biome = level.getBiomeCached(pos); // Leaf - cache getBiome
+        Holder<Biome> biome = org.dreeam.leaf.config.modules.opt.OptimizeBiome.mobSpawn ? level.getBiomeCached(pos) : level.getBiome(pos); // Leaf - cache getBiome
         return category == MobCategory.WATER_AMBIENT && biome.is(BiomeTags.REDUCED_WATER_AMBIENT_SPAWNS) && random.nextFloat() < 0.98F
             ? Optional.empty()
             : mobsAt(level, structureManager, generator, category, pos, biome).getRandom(random);
@@ -52,7 +52,7 @@ index ce2621a87dec1befb016b3437ceb2d02ed6d0b75..c0d941af10ffe8c158dab9db40c7c576
         return isInNetherFortressBounds(pos, level, category, structureManager)
             ? NetherFortressStructure.FORTRESS_ENEMIES
 -            : generator.getMobsAt(biome != null ? biome : level.getBiome(pos), structureManager, category, pos);
-+            : generator.getMobsAt(biome != null ? biome : level.getBiomeCached(pos), structureManager, category, pos); // Leaf - cache getBiome
+            : generator.getMobsAt(biome != null ? biome : (org.dreeam.leaf.config.modules.opt.OptimizeBiome.mobSpawn ? level.getBiomeCached(pos) : level.getBiome(pos)), structureManager, category, pos); // Leaf - cache getBiome
     }
 
     public static boolean isInNetherFortressBounds(BlockPos pos, ServerLevel level, MobCategory category, StructureManager structureManager) {
--- a/leaf-server/minecraft-patches/features/0185-optimise-NaturalSpawner-spawnForChunk.patch
+++ b/leaf-server/minecraft-patches/features/0185-optimise-NaturalSpawner-spawnForChunk.patch
@@ -1,14 +1,95 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: hayanesuru <hayanesuru@outlook.jp>
 Date: Tue, 3 Jun 2025 15:20:59 +0900
-Subject: [PATCH] optimise NaturalSpawner#spawnForChunk
+Subject: [PATCH] optimize mob spawning


+diff --git a/net/minecraft/server/level/ServerChunkCache.java b/net/minecraft/server/level/ServerChunkCache.java
+index d61da0fbe7f6c181e4084ce60bfe7dab86f361ad..1ce1b21a77cd727b52bd937b65ce97517fed9c68 100644
+--- a/net/minecraft/server/level/ServerChunkCache.java
+++ b/net/minecraft/server/level/ServerChunkCache.java
+@@ -70,7 +70,9 @@ public class ServerChunkCache extends ChunkSource implements ca.spottedleaf.moon
+     private final Set<ChunkHolder> chunkHoldersToBroadcast = new ReferenceOpenHashSet<>();
+     @Nullable
+     @VisibleForDebug
+-    private NaturalSpawner.SpawnState lastSpawnState;
+    private volatile NaturalSpawner.SpawnState lastSpawnState; // Leaf
+    private long delayTimeInhabited = 0L; // Leaf
+    private long delaySpawn = -1L; // Leaf
+     // Paper start
+     private final ca.spottedleaf.concurrentutil.map.ConcurrentLong2ReferenceChainedHashTable<net.minecraft.world.level.chunk.LevelChunk> fullChunks = new ca.spottedleaf.concurrentutil.map.ConcurrentLong2ReferenceChainedHashTable<>();
+     public int getFullChunksCount() {
+@@ -656,13 +658,37 @@ public class ServerChunkCache extends ChunkSource implements ca.spottedleaf.moon
+             filteredSpawningCategories = List.of();
+         }
+ 
+-        for (LevelChunk levelChunk : chunks) {
+-            ChunkPos pos = levelChunk.getPos();
+-            levelChunk.incrementInhabitedTime(timeInhabited);
+-            if (!filteredSpawningCategories.isEmpty() && this.level.getWorldBorder().isWithinBounds(pos) && lastSpawnState != null && (!org.dreeam.leaf.config.modules.async.AsyncMobSpawning.enabled || _pufferfish_spawnCountsReady.get()) && this.chunkMap.anyPlayerCloseEnoughForSpawning(pos, true)) { // Spigot // Pufferfish // Leaf - Don't spawn if lastSpawnState is null
+-                NaturalSpawner.spawnForChunk(this.level, levelChunk, lastSpawnState, filteredSpawningCategories); // Pufferfish
+        // Leaf start
+        var lastSpawnState1 = this.lastSpawnState;
+        if (lastSpawnState1 != null && (!org.dreeam.leaf.config.modules.async.AsyncMobSpawning.enabled || _pufferfish_spawnCountsReady.get())) {
+            long sumTimeInhabited = timeInhabited + delayTimeInhabited;
+            long time = level.getGameTime();
+            for (LevelChunk levelChunk : chunks) {
+                ChunkPos pos = levelChunk.getPos();
+                levelChunk.incrementInhabitedTime(sumTimeInhabited);
+                if (!filteredSpawningCategories.isEmpty() && this.level.getWorldBorder().isWithinBounds(pos) && this.chunkMap.anyPlayerCloseEnoughForSpawning(pos, true)) { // Spigot
+                    NaturalSpawner.spawnForChunk(this.level, levelChunk, lastSpawnState1, filteredSpawningCategories, time); // Pufferfish
+                }
+            }
+            if (delaySpawn != -1L) {
+                time = delaySpawn;
+                for (LevelChunk levelChunk : chunks) {
+                    ChunkPos pos = levelChunk.getPos();
+                    if (!filteredSpawningCategories.isEmpty() && this.level.getWorldBorder().isWithinBounds(pos) && this.chunkMap.anyPlayerCloseEnoughForSpawning(pos, true)) { // Spigot
+                        NaturalSpawner.spawnForChunk(this.level, levelChunk, lastSpawnState1, filteredSpawningCategories, time); // Pufferfish
+                    }
+                }
+             }
+            delaySpawn = -1L;
+            delayTimeInhabited = 0L;
+        } else {
+            // unlikely
+            delayTimeInhabited += timeInhabited;
+            delaySpawn = level.getGameTime();
+        }
+        // Leaf end
+ 
+        for (LevelChunk levelChunk : chunks) { // Leaf - split to 2 loop
+             if (true) { // Paper - rewrite chunk system
+                 this.level.tickChunk(levelChunk, _int);
+             }
 diff --git a/net/minecraft/world/level/NaturalSpawner.java b/net/minecraft/world/level/NaturalSpawner.java
-index c0d941af10ffe8c158dab9db40c7c5767b6cfd6e..450f17badaa3f6c8f1cdb9e6dc76828b70afe6fc 100644
+index 9b37b763c6555705f3e256010f508b5a0c2cdb66..7bfc636fb442036f742903c4e69a8a9fcd0e6fc2 100644
 --- a/net/minecraft/world/level/NaturalSpawner.java
 +++ b/net/minecraft/world/level/NaturalSpawner.java
-@@ -238,10 +238,13 @@ public final class NaturalSpawner {
+@@ -155,7 +155,13 @@ public final class NaturalSpawner {
+         return list;
+     }
+ 
+    @Deprecated(forRemoval = true) // Leaf
+     public static void spawnForChunk(ServerLevel level, LevelChunk chunk, NaturalSpawner.SpawnState spawnState, List<MobCategory> categories) {
+    // Leaf start
+        spawnForChunk(level, chunk, spawnState, categories, level.getGameTime());
+    }
+    public static void spawnForChunk(ServerLevel level, LevelChunk chunk, NaturalSpawner.SpawnState spawnState, List<MobCategory> categories, long gameTime) {
+    // Leaf end
+         for (MobCategory mobCategory : categories) {
+             // Paper start - Optional per player mob spawns
+             final boolean canSpawn;
+@@ -174,7 +180,7 @@ public final class NaturalSpawner {
+                 }
+                 // Paper end - throttle failed spawn attempts
+                 if (CraftSpawnCategory.isValidForLimits(spawnCategory)) {
+-                    spawnThisTick = ticksPerSpawnTmp != 0 && level.getGameTime() % ticksPerSpawn == 0; // Paper - throttle failed spawn attempts
+                    spawnThisTick = ticksPerSpawnTmp != 0 && gameTime % ticksPerSpawn == 0; // Paper - throttle failed spawn attempts // Leaf
+                     limit = level.getWorld().getSpawnLimit(spawnCategory);
+                 }
+ 
+@@ -238,12 +244,14 @@ public final class NaturalSpawner {
         // Paper end - throttle failed spawn attempts
     ) {
         // Paper end - Optional per player mob spawns
@@ -18,27 +99,24 @@ index c0d941af10ffe8c158dab9db40c7c5767b6cfd6e..450f17badaa3f6c8f1cdb9e6dc76828b
 +        // Leaf start
 +        BlockPos.MutableBlockPos pos = new BlockPos.MutableBlockPos();
 +        mutableRandomPosWithin(pos, level, chunk);
-+        if (pos.getY() >= level.getMinY() + 1) {
+        if (pos.getY() < level.getMinY() + 1) {
+            return 0;
+         }
+-
+-        return 0; // Paper - throttle failed spawn attempts
 +        return spawnCategoryForPosition(category, level, chunk, pos, filter, callback, maxSpawns, trackEntity, false); // Paper - Optional per player mob spawns // Paper - throttle failed spawn attempts
-         }
 +        // Leaf end
- 
-         return 0; // Paper - throttle failed spawn attempts
     }
-@@ -275,31 +278,60 @@ public final class NaturalSpawner {
+ 
+     @VisibleForDebug
+@@ -275,31 +283,55 @@ public final class NaturalSpawner {
         StructureManager structureManager = level.structureManager();
         ChunkGenerator generator = level.getChunkSource().getGenerator();
         int y = pos.getY();
 +        int posX = pos.getX(); // Leaf
 +        int posZ = pos.getZ(); // Leaf
         int i = 0; // Paper - throttle failed spawn attempts
-        BlockState blockState = level.getBlockStateIfLoadedAndInBounds(pos); // Paper - don't load chunks for mob spawn
-+        // Leaf start
-+        if (!level.getWorldBorder().isWithinBounds(pos) || level.isOutsideBuildHeight(pos)) {
-+            return i;
-+        }
-+        BlockState blockState = chunk.getPos().longKey == ChunkPos.asLong(pos) ? chunk.getBlockState(posX, y, posZ) : level.getBlockStateIfLoaded(pos);
-+        // Leaf end
+         BlockState blockState = level.getBlockStateIfLoadedAndInBounds(pos); // Paper - don't load chunks for mob spawn
         if (blockState != null && !blockState.isRedstoneConductor(chunk, pos)) { // Paper - don't load chunks for mob spawn
 -            BlockPos.MutableBlockPos mutableBlockPos = new BlockPos.MutableBlockPos();
 +            BlockPos.MutableBlockPos mutableBlockPos = pos instanceof BlockPos.MutableBlockPos pos2 ? pos2 : new BlockPos.MutableBlockPos(); // Leaf
--- a/leaf-server/minecraft-patches/features/0187-throttle-mob-spawning.patch
+++ b/leaf-server/minecraft-patches/features/0187-throttle-mob-spawning.patch
@@ -1,21 +1,21 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: hayanesuru <hayanesuru@outlook.jp>
-Date: Tue, 3 Jun 2025 21:34:25 +0900
+Date: Wed, 4 Jun 2025 20:54:03 +0900
 Subject: [PATCH] throttle mob spawning


 diff --git a/net/minecraft/world/level/NaturalSpawner.java b/net/minecraft/world/level/NaturalSpawner.java
-index 450f17badaa3f6c8f1cdb9e6dc76828b70afe6fc..2f709cca7180e2f4874a7f80ed32498aba6dcac0 100644
+index 7bfc636fb442036f742903c4e69a8a9fcd0e6fc2..762bdf1fe19546f89d34b9efdad66b00dab80006 100644
 --- a/net/minecraft/world/level/NaturalSpawner.java
 +++ b/net/minecraft/world/level/NaturalSpawner.java
-@@ -160,6 +160,17 @@ public final class NaturalSpawner {
+@@ -166,6 +166,17 @@ public final class NaturalSpawner {
             // Paper start - Optional per player mob spawns
             final boolean canSpawn;
             int maxSpawns = Integer.MAX_VALUE;
 +            // Leaf start
-+            if (org.dreeam.leaf.config.modules.opt.ThrottleNaturalSpawnMob.enabled) {
-+                int spawnChance = org.dreeam.leaf.config.modules.opt.ThrottleNaturalSpawnMob.spawnChance[mobCategory.ordinal()];
-+                long failedAttempt = org.dreeam.leaf.config.modules.opt.ThrottleNaturalSpawnMob.failedAttempts[mobCategory.ordinal()];
+            if (org.dreeam.leaf.config.modules.opt.ThrottleNaturalMobSpawning.enabled) {
+                int spawnChance = org.dreeam.leaf.config.modules.opt.ThrottleNaturalMobSpawning.spawnChance[mobCategory.ordinal()];
+                long failedAttempt = org.dreeam.leaf.config.modules.opt.ThrottleNaturalMobSpawning.failedAttempts[mobCategory.ordinal()];
 +                if (failedAttempt >= 0L
 +                    && chunk.failedSpawnAttempts[mobCategory.ordinal()] >= failedAttempt
 +                    && (level.random.nextInt() & 1023) > spawnChance) {
--- a/leaf-server/minecraft-patches/features/0188-delay-to-next-tick-when-mob-spawning-not-ready.patch
+++ b/leaf-server/minecraft-patches/features/0188-delay-to-next-tick-when-mob-spawning-not-ready.patch
@@ -1,81 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: hayanesuru <hayanesuru@outlook.jp>
-Date: Wed, 4 Jun 2025 00:31:39 +0900
-Subject: [PATCH] delay to next tick when mob spawning not ready
-
-
-diff --git a/net/minecraft/server/level/ServerChunkCache.java b/net/minecraft/server/level/ServerChunkCache.java
-index d61da0fbe7f6c181e4084ce60bfe7dab86f361ad..d9f74ac79e67ed7b9619041cce763b60a8f9a929 100644
--- a/net/minecraft/server/level/ServerChunkCache.java
-+++ b/net/minecraft/server/level/ServerChunkCache.java
-@@ -70,7 +70,8 @@ public class ServerChunkCache extends ChunkSource implements ca.spottedleaf.moon
-     private final Set<ChunkHolder> chunkHoldersToBroadcast = new ReferenceOpenHashSet<>();
-     @Nullable
-     @VisibleForDebug
-    private NaturalSpawner.SpawnState lastSpawnState;
-+    private volatile NaturalSpawner.SpawnState lastSpawnState; // Leaf
-+    private final it.unimi.dsi.fastutil.longs.LongArrayList delaySpawn = new it.unimi.dsi.fastutil.longs.LongArrayList(); // Leaf
-     // Paper start
-     private final ca.spottedleaf.concurrentutil.map.ConcurrentLong2ReferenceChainedHashTable<net.minecraft.world.level.chunk.LevelChunk> fullChunks = new ca.spottedleaf.concurrentutil.map.ConcurrentLong2ReferenceChainedHashTable<>();
-     public int getFullChunksCount() {
-@@ -656,13 +657,30 @@ public class ServerChunkCache extends ChunkSource implements ca.spottedleaf.moon
-             filteredSpawningCategories = List.of();
-         }
- 
-        for (LevelChunk levelChunk : chunks) {
-            ChunkPos pos = levelChunk.getPos();
-            levelChunk.incrementInhabitedTime(timeInhabited);
-            if (!filteredSpawningCategories.isEmpty() && this.level.getWorldBorder().isWithinBounds(pos) && lastSpawnState != null && (!org.dreeam.leaf.config.modules.async.AsyncMobSpawning.enabled || _pufferfish_spawnCountsReady.get()) && this.chunkMap.anyPlayerCloseEnoughForSpawning(pos, true)) { // Spigot // Pufferfish // Leaf - Don't spawn if lastSpawnState is null
-                NaturalSpawner.spawnForChunk(this.level, levelChunk, lastSpawnState, filteredSpawningCategories); // Pufferfish
-+        // Leaf start
-+        var lastSpawnState1 = this.lastSpawnState;
-+        if (lastSpawnState1 != null && (!org.dreeam.leaf.config.modules.async.AsyncMobSpawning.enabled || _pufferfish_spawnCountsReady.get())) {
-+            int delaySpawnSize = delaySpawn.size();
-+            for (LevelChunk levelChunk : chunks) {
-+                ChunkPos pos = levelChunk.getPos();
-+                levelChunk.incrementInhabitedTime(timeInhabited);
-+                if (!filteredSpawningCategories.isEmpty() && this.level.getWorldBorder().isWithinBounds(pos) && this.chunkMap.anyPlayerCloseEnoughForSpawning(pos, true)) { // Spigot
-+                    for (int i = 0; i < delaySpawnSize; i++) {
-+                        NaturalSpawner.spawnForChunk(this.level, levelChunk, lastSpawnState1, filteredSpawningCategories, delaySpawn.getLong(i));
-+                    }
-+                    NaturalSpawner.spawnForChunk(this.level, levelChunk, lastSpawnState1, filteredSpawningCategories); // Pufferfish
-+                }
-             }
-+            delaySpawn.clear();
-+        } else {
-+            for (LevelChunk levelChunk : chunks) {
-+                levelChunk.incrementInhabitedTime(timeInhabited);
-+            }
-+            delaySpawn.add(level.getGameTime());
-+        }
-+        // Leaf end
- 
-+        for (LevelChunk levelChunk : chunks) { // Leaf
-             if (true) { // Paper - rewrite chunk system
-                 this.level.tickChunk(levelChunk, _int);
-             }
-diff --git a/net/minecraft/world/level/NaturalSpawner.java b/net/minecraft/world/level/NaturalSpawner.java
-index 2f709cca7180e2f4874a7f80ed32498aba6dcac0..32c9106b70ef7ab85077d6ec4bd7d7b84d9f8c00 100644
--- a/net/minecraft/world/level/NaturalSpawner.java
-+++ b/net/minecraft/world/level/NaturalSpawner.java
-@@ -156,6 +156,11 @@ public final class NaturalSpawner {
-     }
- 
-     public static void spawnForChunk(ServerLevel level, LevelChunk chunk, NaturalSpawner.SpawnState spawnState, List<MobCategory> categories) {
-+    // Leaf start
-+        spawnForChunk(level, chunk, spawnState, categories, level.getGameTime());
-+    }
-+    public static void spawnForChunk(ServerLevel level, LevelChunk chunk, NaturalSpawner.SpawnState spawnState, List<MobCategory> categories, long gameTime) {
-+    // Leaf end
-         for (MobCategory mobCategory : categories) {
-             // Paper start - Optional per player mob spawns
-             final boolean canSpawn;
-@@ -185,7 +190,7 @@ public final class NaturalSpawner {
-                 }
-                 // Paper end - throttle failed spawn attempts
-                 if (CraftSpawnCategory.isValidForLimits(spawnCategory)) {
-                    spawnThisTick = ticksPerSpawnTmp != 0 && level.getGameTime() % ticksPerSpawn == 0; // Paper - throttle failed spawn attempts
-+                    spawnThisTick = ticksPerSpawnTmp != 0 && gameTime % ticksPerSpawn == 0; // Paper - throttle failed spawn attempts // Leaf
-                     limit = level.getWorld().getSpawnLimit(spawnCategory);
-                 }
- 
--- a/leaf-server/minecraft-patches/features/0188-preload-mob-spawning-position.patch
+++ b/leaf-server/minecraft-patches/features/0188-preload-mob-spawning-position.patch
@@ -0,0 +1,108 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: hayanesuru <hayanesuru@outlook.jp>
+Date: Wed, 4 Jun 2025 20:54:32 +0900
+Subject: [PATCH] preload mob spawning position
+
+
+diff --git a/net/minecraft/world/level/NaturalSpawner.java b/net/minecraft/world/level/NaturalSpawner.java
+index 762bdf1fe19546f89d34b9efdad66b00dab80006..0443df34de4f940f64e563ea76453493cadf200b 100644
+--- a/net/minecraft/world/level/NaturalSpawner.java
+++ b/net/minecraft/world/level/NaturalSpawner.java
+@@ -257,9 +257,56 @@ public final class NaturalSpawner {
+         // Paper end - Optional per player mob spawns
+         // Leaf start
+         BlockPos.MutableBlockPos pos = new BlockPos.MutableBlockPos();
+-        mutableRandomPosWithin(pos, level, chunk);
+-        if (pos.getY() < level.getMinY() + 1) {
+-            return 0;
+        // Leaf start
+        if (org.dreeam.leaf.config.modules.opt.PreloadNaturalMobSpawning.enabled) {
+            if (chunk.cacheSpawnPosIndex == 16 || chunk.cacheSpawnPosIndex == -1) {
+                if (chunk.cacheSpawnPos == null) {
+                    chunk.cacheSpawnPos = new long[16];
+                }
+                // cache friendly
+                for (int i = 0; i < 16; i++) {
+                    mutableRandomPosWithin(pos, level, chunk);
+                    if (pos.getY() >= level.getMinY() + 1
+                        && level.getWorldBorder().isWithinBounds(pos)
+                        && !level.isOutsideBuildHeight(pos)) {
+                        LevelChunk chunk1 = chunk.getPos().longKey == ChunkPos.asLong(pos)
+                            ? chunk
+                            : level.chunkSource.getChunkAtIfLoadedImmediately(pos.getX() >> 4, pos.getZ() >> 4);
+                        if (chunk1 != null) {
+                            BlockState bs = chunk1.getBlockStateFinal(pos.getX(), pos.getY(), pos.getZ());
+                            if (bs != null && !bs.isRedstoneConductor(level, pos)) {
+                                chunk.cacheSpawnPos[i] = BlockPos.asLong(pos.getX(), pos.getY(), pos.getZ());
+                                continue;
+                            }
+                        }
+                    }
+                    chunk.cacheSpawnPos[i] = -1;
+                }
+                chunk.cacheSpawnPosIndex = 0;
+            }
+            long cachePos = chunk.cacheSpawnPos[chunk.cacheSpawnPosIndex];
+            chunk.cacheSpawnPosIndex++;
+            if (cachePos == -1) {
+                return 0;
+            }
+            pos.set(cachePos);
+        } else {
+            mutableRandomPosWithin(pos, level, chunk);
+            if (pos.getY() < level.getMinY() + 1
+                || !level.getWorldBorder().isWithinBounds(pos)
+                || level.isOutsideBuildHeight(pos)) {
+                return 0;
+            }
+            LevelChunk chunk1 = chunk.getPos().longKey == ChunkPos.asLong(pos)
+                ? chunk
+                : level.chunkSource.getChunkAtIfLoadedImmediately(pos.getX() >> 4, pos.getZ() >> 4);
+            if (chunk1 == null) {
+                return 0;
+            }
+            BlockState bs = chunk1.getBlockStateFinal(pos.getX(), pos.getY(), pos.getZ());
+            if (bs == null || bs.isRedstoneConductor(level, pos)) {
+                return 0;
+            }
+         }
+         return spawnCategoryForPosition(category, level, chunk, pos, filter, callback, maxSpawns, trackEntity, false); // Paper - Optional per player mob spawns // Paper - throttle failed spawn attempts
+         // Leaf end
+@@ -284,7 +331,12 @@ public final class NaturalSpawner {
+         MobCategory category, ServerLevel level, ChunkAccess chunk, BlockPos pos, NaturalSpawner.SpawnPredicate filter, NaturalSpawner.AfterSpawnCallback callback, final int maxSpawns, final @Nullable Consumer<Entity> trackEntity
+         // Paper start - throttle failed spawn attempts
+     ) {
+-        spawnCategoryForPosition(category, level, chunk, pos, filter, callback, maxSpawns, trackEntity, false);
+        // Leaf start
+        BlockState blockState = level.getBlockStateIfLoadedAndInBounds(pos);
+        if (blockState != null && !blockState.isRedstoneConductor(chunk, pos)) {
+            spawnCategoryForPosition(category, level, chunk, pos, filter, callback, maxSpawns, trackEntity, false);
+        }
+        // Leaf end
+     }
+     public static int spawnCategoryForPosition(
+         MobCategory category, ServerLevel level, ChunkAccess chunk, BlockPos pos, NaturalSpawner.SpawnPredicate filter, NaturalSpawner.AfterSpawnCallback callback, final int maxSpawns, final @Nullable Consumer<Entity> trackEntity, final boolean nothing
+@@ -297,8 +349,8 @@ public final class NaturalSpawner {
+         int posX = pos.getX(); // Leaf
+         int posZ = pos.getZ(); // Leaf
+         int i = 0; // Paper - throttle failed spawn attempts
+-        BlockState blockState = level.getBlockStateIfLoadedAndInBounds(pos); // Paper - don't load chunks for mob spawn
+-        if (blockState != null && !blockState.isRedstoneConductor(chunk, pos)) { // Paper - don't load chunks for mob spawn
+        // BlockState blockState = level.getBlockStateIfLoadedAndInBounds(pos); // Paper - don't load chunks for mob spawn // Leaf
+        if (true /*blockState != null && !blockState.isRedstoneConductor(chunk, pos)*/) { // Paper - don't load chunks for mob spawn // Leaf
+             BlockPos.MutableBlockPos mutableBlockPos = pos instanceof BlockPos.MutableBlockPos pos2 ? pos2 : new BlockPos.MutableBlockPos(); // Leaf
+             //int i = 0; // Paper - throttle failed spawn attempts - move up
+ 
+diff --git a/net/minecraft/world/level/chunk/LevelChunk.java b/net/minecraft/world/level/chunk/LevelChunk.java
+index e6eab6929b08503c49debbbd25497ffedad438e1..624a177695580510c0a49d4503dee72da7fd7114 100644
+--- a/net/minecraft/world/level/chunk/LevelChunk.java
+++ b/net/minecraft/world/level/chunk/LevelChunk.java
+@@ -106,6 +106,8 @@ public class LevelChunk extends ChunkAccess implements ca.spottedleaf.moonrise.p
+     // Paper start - rewrite chunk system
+     private boolean postProcessingDone;
+     private net.minecraft.server.level.ServerChunkCache.ChunkAndHolder chunkAndHolder;
+    public long[] cacheSpawnPos = null; // Leaf
+    public int cacheSpawnPosIndex = -1; // Leaf
+ 
+     @Override
+     public final boolean moonrise$isPostProcessingDone() {
--- a/leaf-server/src/main/java/org/dreeam/leaf/config/modules/opt/OptimizeBiome.java
+++ b/leaf-server/src/main/java/org/dreeam/leaf/config/modules/opt/OptimizeBiome.java
@@ -5,13 +5,17 @@ import org.dreeam.leaf.config.EnumConfigCategory;

 public class OptimizeBiome extends ConfigModules {
    public String getBasePath() {
-        return EnumConfigCategory.PERF.getBaseKeyName() + ".cache-mob-spawning-biome";
+        return EnumConfigCategory.PERF.getBaseKeyName() + ".cache-biome";
    }

    public static boolean enabled = false;
+    public static boolean mobSpawn = false;
+    public static boolean advancement = false;

    @Override
    public void onLoaded() {
-        enabled = config().getBoolean(getBasePath(), enabled);
+        enabled = config().getBoolean(getBasePath() + ".enabled", enabled);
+        mobSpawn = config.getBoolean(getBasePath() + ".mob-spawning", false);
+        advancement = config.getBoolean(getBasePath() + ".advancements", false);
    }
 }
--- a/leaf-server/src/main/java/org/dreeam/leaf/config/modules/opt/PreloadNaturalMobSpawning.java
+++ b/leaf-server/src/main/java/org/dreeam/leaf/config/modules/opt/PreloadNaturalMobSpawning.java
@@ -0,0 +1,17 @@
+package org.dreeam.leaf.config.modules.opt;
+
+import org.dreeam.leaf.config.ConfigModules;
+import org.dreeam.leaf.config.EnumConfigCategory;
+
+public class PreloadNaturalMobSpawning extends ConfigModules {
+    public String getBasePath() {
+        return EnumConfigCategory.PERF.getBaseKeyName() + ".preload-mob-spawning-position";
+    }
+
+    public static boolean enabled = false;
+
+    @Override
+    public void onLoaded() {
+        enabled = config.getBoolean(getBasePath() + ".enabled", enabled);
+    }
+}
--- a/leaf-server/src/main/java/org/dreeam/leaf/config/modules/opt/ThrottleNaturalMobSpawning.java
+++ b/leaf-server/src/main/java/org/dreeam/leaf/config/modules/opt/ThrottleNaturalMobSpawning.java
@@ -4,9 +4,9 @@ import net.minecraft.world.entity.MobCategory;
 import org.dreeam.leaf.config.ConfigModules;
 import org.dreeam.leaf.config.EnumConfigCategory;

-public class ThrottleNaturalSpawnMob extends ConfigModules {
+public class ThrottleNaturalMobSpawning extends ConfigModules {
    public String getBasePath() {
-        return EnumConfigCategory.PERF.getBaseKeyName() + ".throttled-mob-spawning";
+        return EnumConfigCategory.PERF.getBaseKeyName() + ".throttle-mob-spawning";
    }

    public static boolean enabled = false;
@@ -21,7 +21,7 @@ public class ThrottleNaturalSpawnMob extends ConfigModules {
        spawnChance = new int[categories.length];
        for (int i = 0; i < categories.length; i++) {
            String category = getBasePath() + "." + categories[i].getSerializedName();
-            long attempts = config.getLong(category + ".min-failed-attempts", 8);
+            long attempts = config.getLong(category + ".min-failed", 8);
            double chance = config.getDouble(category + ".spawn-chance", 25.0);

            failedAttempts[i] = Math.max(-1, attempts);