From f9873a8b7b662603099b4767da5e7b9743b3b61d 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 fd3dbea62..e790326c9 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -618,4 +618,9 @@ 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 af81a8414..2268fbdd8 100644
--- a/src/main/java/net/minecraft/server/ChunkGeneratorAbstract.java
+++ b/src/main/java/net/minecraft/server/ChunkGeneratorAbstract.java
@@ -211,8 +211,8 @@ public abstract class ChunkGeneratorAbstract<T extends GeneratorSettingsDefault>
         int i = ichunkaccess.getPos().d();
         int j = ichunkaccess.getPos().e();
         T t0 = this.getSettings();
-        int k = t0.u();
-        int l = t0.t();
+        int k = t0.u(); final int floorHeight = k; // Paper
+        int l = t0.t(); final int roofHeight = l; // Paper
         Iterator iterator = BlockPosition.b(i, 0, j, i + 15, 0, j + 15).iterator();
 
         while (iterator.hasNext()) {
@@ -221,7 +221,7 @@ public abstract class ChunkGeneratorAbstract<T extends GeneratorSettingsDefault>
 
             if (l > 0) {
                 for (i1 = l; i1 >= l - 4; --i1) {
-                    if (i1 >= l - random.nextInt(5)) {
+                    if (i1 >= (getWorld().paperConfig.generateFlatBedrock ? roofHeight : l - random.nextInt(5))) { // Paper - Configurable flat bedrock roof
                         ichunkaccess.setType(blockposition_mutableblockposition.d(blockposition.getX(), i1, blockposition.getZ()), Blocks.BEDROCK.getBlockData(), false);
                     }
                 }
@@ -229,7 +229,7 @@ public abstract class ChunkGeneratorAbstract<T extends GeneratorSettingsDefault>
 
             if (k < 256) {
                 for (i1 = k + 4; i1 >= k; --i1) {
-                    if (i1 <= k + random.nextInt(5)) {
+                    if (i1 <= (getWorld().paperConfig.generateFlatBedrock ? floorHeight : k + random.nextInt(5))) { // Paper - Configurable flat bedrock floor
                         ichunkaccess.setType(blockposition_mutableblockposition.d(blockposition.getX(), i1, blockposition.getZ()), Blocks.BEDROCK.getBlockData(), false);
                     }
                 }
-- 
2.25.0.windows.1