From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Doc <nachito94@msn.com>
Date: Mon, 2 Aug 2021 11:24:39 -0400
Subject: [PATCH] Add configurable height for slime spawn


diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index cd5a7bac92a1e733d69340f09bc35906138a6ce3..e7c129c74ab808eb3dd2b4a249564f7804a28d01 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -423,6 +423,16 @@ public class PaperWorldConfig {
         allChunksAreSlimeChunks = getBoolean("all-chunks-are-slime-chunks", false);
     }
 
+    public double slimeMaxSpawnHeightInSwamp = 70;
+    public double slimeMinSpawnHeightInSwamp = 50;
+    public double slimeMaxSpawnHeightInSlimeChunks = 40;
+    private void slimeSpawnHeight() {
+        slimeMaxSpawnHeightInSwamp = getDouble("slime-spawn-height.swamp-biome.maximum", this.slimeMaxSpawnHeightInSwamp);
+        slimeMinSpawnHeightInSwamp = getDouble("slime-spawn-height.swamp-biome.minimum", this.slimeMinSpawnHeightInSwamp);
+        slimeMaxSpawnHeightInSlimeChunks = getDouble("slime-spawn-height.slime-chunk.maximum", this.slimeMaxSpawnHeightInSlimeChunks);
+    }
+
+
     public int portalSearchRadius;
     public int portalCreateRadius;
     public boolean portalSearchVanillaDimensionScaling;
diff --git a/src/main/java/net/minecraft/world/entity/monster/Slime.java b/src/main/java/net/minecraft/world/entity/monster/Slime.java
index 5722d9b30223fb229b80f54d7fb9edf41254a7f7..9c440625ce89686b2c250e6aaa62ed83b7015412 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Slime.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Slime.java
@@ -327,7 +327,11 @@ public class Slime extends Mob implements Enemy {
 
     public static boolean checkSlimeSpawnRules(EntityType<Slime> type, LevelAccessor world, MobSpawnType spawnReason, BlockPos pos, Random random) {
         if (world.getDifficulty() != Difficulty.PEACEFUL) {
-            if (Objects.equals(world.getBiomeName(pos), Optional.of(Biomes.SWAMP)) && pos.getY() > 50 && pos.getY() < 70 && random.nextFloat() < 0.5F && random.nextFloat() < world.getMoonBrightness() && world.getMaxLocalRawBrightness(pos) <= random.nextInt(8)) {
+            // Paper start - Replace rules for Height in Swamp Biome
+            final double maxHeightSwamp = world.getMinecraftWorld().paperConfig.slimeMaxSpawnHeightInSwamp;
+            final double minHeightSwamp = world.getMinecraftWorld().paperConfig.slimeMinSpawnHeightInSwamp;
+            if (Objects.equals(world.getBiomeName(pos), Optional.of(Biomes.SWAMP)) && pos.getY() > minHeightSwamp && pos.getY() < maxHeightSwamp && random.nextFloat() < 0.5F && random.nextFloat() < world.getMoonBrightness() && world.getMaxLocalRawBrightness(pos) <= random.nextInt(8)) {
+            // Paper end
                 return checkMobSpawnRules(type, world, spawnReason, pos, random);
             }
 
@@ -338,7 +342,10 @@ public class Slime extends Mob implements Enemy {
             ChunkPos chunkcoordintpair = new ChunkPos(pos);
             boolean flag = world.getMinecraftWorld().paperConfig.allChunksAreSlimeChunks || WorldgenRandom.seedSlimeChunk(chunkcoordintpair.x, chunkcoordintpair.z, ((WorldGenLevel) world).getSeed(), world.getMinecraftWorld().spigotConfig.slimeSeed).nextInt(10) == 0; // Spigot // Paper
 
-            if (random.nextInt(10) == 0 && flag && pos.getY() < 40) {
+            // Paper start - Replace rules for Height in Slime Chunks
+            final double maxHeightSlimeChunk = world.getMinecraftWorld().paperConfig.slimeMaxSpawnHeightInSlimeChunks;
+            if (random.nextInt(10) == 0 && flag && pos.getY() < maxHeightSlimeChunk) {
+            // Paper end
                 return checkMobSpawnRules(type, world, spawnReason, pos, random);
             }
         }
