From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Byteflux <byte@byteflux.net>
Date: Wed, 2 Mar 2016 02:17:54 -0600
Subject: [PATCH] Generator Settings


diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 91e78bfedf3e4fa1ee39b8dc7f7c5af8492da160..802102dc716e99eaa3cc061995498e7cbe4e4f89 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -558,4 +558,9 @@ public class PaperWorldConfig {
     private void perPlayerMobSpawns() {
         perPlayerMobSpawns = getBoolean("per-player-mob-spawns", false);
     }
+
+    public boolean generateFlatBedrock;
+    private void generatorSettings() {
+        generateFlatBedrock = getBoolean("generator-settings.flat-bedrock", false);
+    }
 }
diff --git a/src/main/java/net/minecraft/server/ChunkGeneratorAbstract.java b/src/main/java/net/minecraft/server/ChunkGeneratorAbstract.java
index 24befd3222e73cdd5853aac502a22387b1fdf81a..4741d28aec73ffa1d5a9f60a4086eac3375c83b1 100644
--- a/src/main/java/net/minecraft/server/ChunkGeneratorAbstract.java
+++ b/src/main/java/net/minecraft/server/ChunkGeneratorAbstract.java
@@ -374,8 +374,8 @@ public final class ChunkGeneratorAbstract extends ChunkGenerator {
         int i = ichunkaccess.getPos().d();
         int j = ichunkaccess.getPos().e();
         GeneratorSettingBase generatorsettingbase = (GeneratorSettingBase) this.h.get();
-        int k = generatorsettingbase.f();
-        int l = this.x - 1 - generatorsettingbase.e();
+        int k = generatorsettingbase.f(); final int floorHeight = k; // Paper
+        int l = this.x - 1 - generatorsettingbase.e(); final int roofHeight = l; // Paper
         boolean flag = true;
         boolean flag1 = l + 4 >= 0 && l < this.x;
         boolean flag2 = k + 4 >= 0 && k < this.x;
@@ -389,7 +389,7 @@ public final class ChunkGeneratorAbstract extends ChunkGenerator {
 
                 if (flag1) {
                     for (i1 = 0; i1 < 5; ++i1) {
-                        if (i1 <= random.nextInt(5)) {
+                        if (i1 <= (ichunkaccess.generateFlatBedrock() ? roofHeight : random.nextInt(5))) { // Paper - Configurable flat bedrock roof
                             ichunkaccess.setType(blockposition_mutableblockposition.d(blockposition.getX(), l - i1, blockposition.getZ()), Blocks.BEDROCK.getBlockData(), false);
                         }
                     }
@@ -397,7 +397,7 @@ public final class ChunkGeneratorAbstract extends ChunkGenerator {
 
                 if (flag2) {
                     for (i1 = 4; i1 >= 0; --i1) {
-                        if (i1 <= random.nextInt(5)) {
+                        if (i1 <= (ichunkaccess.generateFlatBedrock() ? floorHeight : random.nextInt(5))) { // Paper - Configurable flat bedrock floor
                             ichunkaccess.setType(blockposition_mutableblockposition.d(blockposition.getX(), k + i1, blockposition.getZ()), Blocks.BEDROCK.getBlockData(), false);
                         }
                     }
diff --git a/src/main/java/net/minecraft/server/IChunkAccess.java b/src/main/java/net/minecraft/server/IChunkAccess.java
index 887366f4c2ab608974113e75760b58c47f2afa00..180b6b58dc5663158db84b6f1257591439b48c31 100644
--- a/src/main/java/net/minecraft/server/IChunkAccess.java
+++ b/src/main/java/net/minecraft/server/IChunkAccess.java
@@ -12,6 +12,18 @@ import org.apache.logging.log4j.LogManager;
 
 public interface IChunkAccess extends IBlockAccess, IStructureAccess {
 
+    // Paper start
+    default boolean generateFlatBedrock() {
+        if (this instanceof ProtoChunk) {
+            return ((ProtoChunk)this).world.paperConfig.generateFlatBedrock;
+        } else if (this instanceof Chunk) {
+            return ((Chunk)this).world.paperConfig.generateFlatBedrock;
+        } else {
+            return false;
+        }
+    }
+    // Paper end
+
     IBlockData getType(final int x, final int y, final int z); // Paper
     @Nullable
     IBlockData setType(BlockPosition blockposition, IBlockData iblockdata, boolean flag);
diff --git a/src/main/java/net/minecraft/server/ProtoChunk.java b/src/main/java/net/minecraft/server/ProtoChunk.java
index 912c5187a08e972fc9455aed33278387a83f03f2..5b0cd414ca1949ab53b289f7159f18da07d21f14 100644
--- a/src/main/java/net/minecraft/server/ProtoChunk.java
+++ b/src/main/java/net/minecraft/server/ProtoChunk.java
@@ -46,7 +46,7 @@ public class ProtoChunk implements IChunkAccess {
     private long s;
     private final Map<WorldGenStage.Features, BitSet> t;
     private volatile boolean u;
-    private final World world; // Paper - Anti-Xray - Add world
+    final World world; // Paper - Anti-Xray - Add world // Paper - private -> default
 
     // Paper start - Anti-Xray - Add world
     @Deprecated public ProtoChunk(ChunkCoordIntPair chunkcoordintpair, ChunkConverter chunkconverter) { this(chunkcoordintpair, chunkconverter, null); } // Notice for updates: Please make sure this constructor isn't used anywhere