From 9c17815e1af1bfe3b5c1053712e337b3233bbebc Mon Sep 17 00:00:00 2001
From: ted80-PC <meatkroket@hotmail.com>
Date: Tue, 7 May 2013 21:33:36 +0200
Subject: [PATCH] added layer zoom

---
 .../world/WorldProviderPromised.java          |   2 +
 .../biomesoplenty/world/layer/BiomeLayer.java |   5 +
 .../world/layer/BiomeLayerZoom.java           | 148 ++++++++++++++++++
 3 files changed, 155 insertions(+)
 create mode 100644 src/minecraft/biomesoplenty/world/layer/BiomeLayerZoom.java

diff --git a/src/minecraft/biomesoplenty/world/WorldProviderPromised.java b/src/minecraft/biomesoplenty/world/WorldProviderPromised.java
index 23c2132ae..6522268f7 100644
--- a/src/minecraft/biomesoplenty/world/WorldProviderPromised.java
+++ b/src/minecraft/biomesoplenty/world/WorldProviderPromised.java
@@ -21,7 +21,9 @@ public class WorldProviderPromised extends WorldProvider
 	public void registerWorldChunkManager()
 	{
 		if (Biomes.promisedLand.isPresent())
+		{
 			this.worldChunkMgr = new WorldChunkManagerHell(Biomes.promisedLand.get(), 0.8F, 0.1F);
+		}
 		//this.worldChunkMgr = new WorldChunkManagerPromised(worldObj);
 		this.dimensionId = BOPConfiguration.promisedLandDimID;
 	}
diff --git a/src/minecraft/biomesoplenty/world/layer/BiomeLayer.java b/src/minecraft/biomesoplenty/world/layer/BiomeLayer.java
index 7454b4eaf..6713770a8 100644
--- a/src/minecraft/biomesoplenty/world/layer/BiomeLayer.java
+++ b/src/minecraft/biomesoplenty/world/layer/BiomeLayer.java
@@ -16,6 +16,11 @@ public abstract class BiomeLayer
     {
     	BiomeLayer obj = new BiomeLayerCreate(1L);
     	
+    	for(int i = 0; i < 4; i++)
+    	{
+    		obj = new BiomeLayerZoom(2000L + i, (BiomeLayer)(obj));
+    	}
+    	
     	return new BiomeLayer[] {};
     }
     
diff --git a/src/minecraft/biomesoplenty/world/layer/BiomeLayerZoom.java b/src/minecraft/biomesoplenty/world/layer/BiomeLayerZoom.java
new file mode 100644
index 000000000..d978a869a
--- /dev/null
+++ b/src/minecraft/biomesoplenty/world/layer/BiomeLayerZoom.java
@@ -0,0 +1,148 @@
+package biomesoplenty.world.layer;
+
+public class BiomeLayerZoom extends BiomeLayer
+{
+    public BiomeLayerZoom(long par1, BiomeLayer par3GenLayer)
+    {
+        super(par1);
+        super.parent = par3GenLayer;
+    }
+
+    public int[] getInts(int par1, int par2, int par3, int par4)
+    {
+        int i1 = par1 >> 1;
+        int j1 = par2 >> 1;
+        int k1 = (par3 >> 1) + 3;
+        int l1 = (par4 >> 1) + 3;
+        int[] aint = this.parent.getInts(i1, j1, k1, l1);
+        int[] aint1 = LayerIntCache.getIntCache(k1 * 2 * l1 * 2);
+        int i2 = k1 << 1;
+        int j2;
+
+        for (int k2 = 0; k2 < l1 - 1; ++k2)
+        {
+            j2 = k2 << 1;
+            int l2 = j2 * i2;
+            int i3 = aint[0 + (k2 + 0) * k1];
+            int j3 = aint[0 + (k2 + 1) * k1];
+
+            for (int k3 = 0; k3 < k1 - 1; ++k3)
+            {
+                this.initChunkSeed((long)(k3 + i1 << 1), (long)(k2 + j1 << 1));
+                int l3 = aint[k3 + 1 + (k2 + 0) * k1];
+                int i4 = aint[k3 + 1 + (k2 + 1) * k1];
+                aint1[l2] = i3;
+                aint1[l2++ + i2] = this.choose(i3, j3);
+                aint1[l2] = this.choose(i3, l3);
+                aint1[l2++ + i2] = this.modeOrRandom(i3, l3, j3, i4);
+                i3 = l3;
+                j3 = i4;
+            }
+        }
+
+        int[] aint2 = LayerIntCache.getIntCache(par3 * par4);
+
+        for (j2 = 0; j2 < par4; ++j2)
+        {
+            System.arraycopy(aint1, (j2 + (par2 & 1)) * (k1 << 1) + (par1 & 1), aint2, j2 * par3, par3);
+        }
+
+        return aint2;
+    }
+
+    /**
+     * Chooses one of the two inputs randomly.
+     */
+    protected int choose(int par1, int par2)
+    {
+        return this.nextInt(2) == 0 ? par1 : par2;
+    }
+
+    /**
+     * returns the mode (most frequently occuring number) or a random number from the 4 integers provided
+     */
+    protected int modeOrRandom(int par1, int par2, int par3, int par4)
+    {
+        if (par2 == par3 && par3 == par4)
+        {
+            return par2;
+        }
+        else if (par1 == par2 && par1 == par3)
+        {
+            return par1;
+        }
+        else if (par1 == par2 && par1 == par4)
+        {
+            return par1;
+        }
+        else if (par1 == par3 && par1 == par4)
+        {
+            return par1;
+        }
+        else if (par1 == par2 && par3 != par4)
+        {
+            return par1;
+        }
+        else if (par1 == par3 && par2 != par4)
+        {
+            return par1;
+        }
+        else if (par1 == par4 && par2 != par3)
+        {
+            return par1;
+        }
+        else if (par2 == par1 && par3 != par4)
+        {
+            return par2;
+        }
+        else if (par2 == par3 && par1 != par4)
+        {
+            return par2;
+        }
+        else if (par2 == par4 && par1 != par3)
+        {
+            return par2;
+        }
+        else if (par3 == par1 && par2 != par4)
+        {
+            return par3;
+        }
+        else if (par3 == par2 && par1 != par4)
+        {
+            return par3;
+        }
+        else if (par3 == par4 && par1 != par2)
+        {
+            return par3;
+        }
+        else if (par4 == par1 && par2 != par3)
+        {
+            return par3;
+        }
+        else if (par4 == par2 && par1 != par3)
+        {
+            return par3;
+        }
+        else if (par4 == par3 && par1 != par2)
+        {
+            return par3;
+        }
+        else
+        {
+            int i1 = this.nextInt(4);
+            return i1 == 0 ? par1 : (i1 == 1 ? par2 : (i1 == 2 ? par3 : par4));
+        }
+    }
+
+    public static BiomeLayer func_75915_a(long par0, BiomeLayer par2GenLayer, int par3)
+    {
+        Object object = par2GenLayer;
+
+        for (int k = 0; k < par3; ++k)
+        {
+            object = new BiomeLayerZoom(par0 + (long)k, (BiomeLayer)object);
+        }
+
+        return (BiomeLayer)object;
+    }
+}