From 6c397da1f8ec4ab0a4e7aee5ccb161f8244afe9e Mon Sep 17 00:00:00 2001
From: Daniel Mills <danielmillst@gmail.com>
Date: Fri, 23 Jul 2021 16:13:17 -0400
Subject: [PATCH] INMS Additions

---
 .../com/volmit/iris/core/nms/INMSBinding.java |  4 +++
 .../iris/core/nms/v16_1/NMSBinding16_1.java   | 10 ++++++
 .../iris/core/nms/v16_2/NMSBinding16_2.java   | 10 ++++++
 .../iris/core/nms/v16_3/NMSBinding16_3.java   | 10 ++++++
 .../iris/core/nms/v17_1/NMSBinding17_1.java   | 10 ++++++
 .../iris/core/nms/v1X/NMSBinding1X.java       | 32 +++++++++++++++++++
 6 files changed, 76 insertions(+)

diff --git a/src/main/java/com/volmit/iris/core/nms/INMSBinding.java b/src/main/java/com/volmit/iris/core/nms/INMSBinding.java
index 913159e67..d501ab80a 100644
--- a/src/main/java/com/volmit/iris/core/nms/INMSBinding.java
+++ b/src/main/java/com/volmit/iris/core/nms/INMSBinding.java
@@ -25,8 +25,12 @@ import org.bukkit.block.Biome;
 import org.bukkit.generator.ChunkGenerator;
 
 public interface INMSBinding {
+    boolean supportsCustomHeight();
+
     Object getBiomeBaseFromId(int id);
 
+    int getMinHeight(World world);
+
     boolean supportsCustomBiomes();
 
     int getTrueBiomeBaseId(Object biomeBase);
diff --git a/src/main/java/com/volmit/iris/core/nms/v16_1/NMSBinding16_1.java b/src/main/java/com/volmit/iris/core/nms/v16_1/NMSBinding16_1.java
index 124a5e5c2..703c5ee4a 100644
--- a/src/main/java/com/volmit/iris/core/nms/v16_1/NMSBinding16_1.java
+++ b/src/main/java/com/volmit/iris/core/nms/v16_1/NMSBinding16_1.java
@@ -68,6 +68,16 @@ public class NMSBinding16_1 implements INMSBinding {
         return null;
     }
 
+    @Override
+    public int getMinHeight(World world) {
+        return 0;
+    }
+
+    @Override
+    public boolean supportsCustomHeight() {
+        return false;
+    }
+
     @Override
     public boolean supportsCustomBiomes() {
         return false;
diff --git a/src/main/java/com/volmit/iris/core/nms/v16_2/NMSBinding16_2.java b/src/main/java/com/volmit/iris/core/nms/v16_2/NMSBinding16_2.java
index 9c50070bb..68e89f37e 100644
--- a/src/main/java/com/volmit/iris/core/nms/v16_2/NMSBinding16_2.java
+++ b/src/main/java/com/volmit/iris/core/nms/v16_2/NMSBinding16_2.java
@@ -125,6 +125,16 @@ public class NMSBinding16_2 implements INMSBinding {
         return false;
     }
 
+    @Override
+    public int getMinHeight(World world) {
+        return 0;
+    }
+
+    @Override
+    public boolean supportsCustomHeight() {
+        return false;
+    }
+
     private Class<?>[] classify(Object... par) {
         Class<?>[] g = new Class<?>[par.length];
         for (int i = 0; i < g.length; i++) {
diff --git a/src/main/java/com/volmit/iris/core/nms/v16_3/NMSBinding16_3.java b/src/main/java/com/volmit/iris/core/nms/v16_3/NMSBinding16_3.java
index e8bbb9b8c..c65f5fa31 100644
--- a/src/main/java/com/volmit/iris/core/nms/v16_3/NMSBinding16_3.java
+++ b/src/main/java/com/volmit/iris/core/nms/v16_3/NMSBinding16_3.java
@@ -53,6 +53,16 @@ public class NMSBinding16_3 implements INMSBinding {
         return null;
     }
 
+    @Override
+    public boolean supportsCustomHeight() {
+        return false;
+    }
+
+    @Override
+    public int getMinHeight(World world) {
+        return 0;
+    }
+
     @Override
     public boolean supportsCustomBiomes() {
         return false;
diff --git a/src/main/java/com/volmit/iris/core/nms/v17_1/NMSBinding17_1.java b/src/main/java/com/volmit/iris/core/nms/v17_1/NMSBinding17_1.java
index 7901655bc..bab80640d 100644
--- a/src/main/java/com/volmit/iris/core/nms/v17_1/NMSBinding17_1.java
+++ b/src/main/java/com/volmit/iris/core/nms/v17_1/NMSBinding17_1.java
@@ -58,6 +58,11 @@ public class NMSBinding17_1 implements INMSBinding {
         return null;
     }
 
+    @Override
+    public boolean supportsCustomHeight() {
+        return false;
+    }
+
     private Field getFieldForBiomeStorage(Object storage) {
         Field f = biomeStorageCache;
 
@@ -108,6 +113,11 @@ public class NMSBinding17_1 implements INMSBinding {
         return true;
     }
 
+    @Override
+    public int getMinHeight(World world) {
+        return world.getMinHeight();
+    }
+
     @Override
     public Object getCustomBiomeBaseFor(String mckey) {
         try {
diff --git a/src/main/java/com/volmit/iris/core/nms/v1X/NMSBinding1X.java b/src/main/java/com/volmit/iris/core/nms/v1X/NMSBinding1X.java
index 40abfa80b..f72c2b0a2 100644
--- a/src/main/java/com/volmit/iris/core/nms/v1X/NMSBinding1X.java
+++ b/src/main/java/com/volmit/iris/core/nms/v1X/NMSBinding1X.java
@@ -24,12 +24,44 @@ import org.bukkit.World;
 import org.bukkit.block.Biome;
 import org.bukkit.generator.ChunkGenerator;
 
+import java.lang.reflect.Method;
+
 public class NMSBinding1X implements INMSBinding {
+    private static final boolean supportsCustomHeight = testCustomHeight();
+
+    @SuppressWarnings("ConstantConditions")
+    private static boolean testCustomHeight() {
+        try
+        {
+            if(World.class.getDeclaredMethod("getMaxHeight") != null && World.class.getDeclaredMethod("getMinHeight") != null);
+            {
+                return true;
+            }
+        }
+
+        catch(Throwable ignored)
+        {
+
+        }
+
+        return false;
+    }
+
+    @Override
+    public boolean supportsCustomHeight() {
+        return supportsCustomHeight;
+    }
+
     @Override
     public Object getBiomeBaseFromId(int id) {
         return null;
     }
 
+    @Override
+    public int getMinHeight(World world) {
+        return supportsCustomHeight ? world.getMinHeight() : 0;
+    }
+
     @Override
     public boolean supportsCustomBiomes() {
         return false;