Ladders.

block/networking/BlockCableBus.java

@@ -8,6 +8,7 @@ import net.minecraft.block.material.Material;
 import net.minecraft.client.renderer.texture.IconRegister;
 import net.minecraft.creativetab.CreativeTabs;
 import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.ItemStack;
 import net.minecraft.tileentity.TileEntity;
@@ -40,6 +41,19 @@ public class BlockCableBus extends AEBaseBlock
 		isFullSize = isOpaque = false;
 	}
 
+	@Override
+	public boolean isLadder(World world, int x, int y, int z, EntityLivingBase entity)
+	{
+		try
+		{
+			return cb( world, x, y, z ).isLadder( entity );
+		}
+		catch (Throwable t)
+		{
+		}
+		return false;
+	}
+
 	@Override
 	public boolean recolourBlock(World world, int x, int y, int z, ForgeDirection side, int colour)
 	{

parts/AEBasePart.java

@@ -9,6 +9,7 @@ import java.util.Random;
 
 import net.minecraft.client.renderer.RenderBlocks;
 import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
@@ -237,4 +238,10 @@ public class AEBasePart implements IPart, IGridProxyable, IGridHost
 
 	}
 
+	@Override
+	public boolean isLadder(EntityLivingBase entity)
+	{
+		return false;
+	}
+
 }

parts/CableBusContainer.java

@@ -11,6 +11,7 @@ import java.util.Random;
 
 import net.minecraft.client.Minecraft;
 import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
@@ -893,4 +894,19 @@ public class CableBusContainer implements AEMultiTile
 		return hasRedstone;
 	}
 
+	public boolean isLadder(EntityLivingBase entity)
+	{
+		for (ForgeDirection side : ForgeDirection.values())
+		{
+			IPart p = getPart( side );
+			if ( p != null )
+			{
+				if ( p.isLadder( entity ) )
+					return true;
+			}
+		}
+
+		return false;
+	}
+
 }

parts/misc/PartCableAnchor.java

@@ -8,6 +8,7 @@ import java.util.Random;
 
 import net.minecraft.client.renderer.RenderBlocks;
 import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
@@ -26,6 +27,7 @@ public class PartCableAnchor implements IPart
 {
 
 	ItemStack is = null;
+	ForgeDirection mySide = ForgeDirection.UP;
 
 	public PartCableAnchor(ItemStack is) {
 		this.is = is;
@@ -167,7 +169,7 @@ public class PartCableAnchor implements IPart
 	@Override
 	public void setPartHostInfo(ForgeDirection side, IPartHost host, TileEntity tile)
 	{
-
+		mySide = side;
 	}
 
 	@Override
@@ -188,4 +190,9 @@ public class PartCableAnchor implements IPart
 		return 0;
 	}
 
+	@Override
+	public boolean isLadder(EntityLivingBase entity)
+	{
+		return mySide.offsetY == 0;
+	}
 }