Fixes anchor rendering (#2698)

* Fixes #2680: Use a shorter cable anchor model when blocked by a facade.
* Fixes #2664: Prevent anchors from creating intersection.

Replaced the simple List<ResourceLocation> for the static models with a
new container also indicating a solid part, which can be used to prevent
the creation of an intersection.

src/main/java/appeng/parts/p2p/PartP2PRedstone.java

@@ -27,7 +27,6 @@ import net.minecraft.block.state.IBlockState;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.util.EnumFacing;
-import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
 
@@ -35,6 +34,7 @@ import appeng.api.networking.events.MENetworkBootingStatusChange;
 import appeng.api.networking.events.MENetworkChannelsChanged;
 import appeng.api.networking.events.MENetworkEventSubscribe;
 import appeng.api.networking.events.MENetworkPowerStatusChange;
+import appeng.api.parts.IPartModel;
 import appeng.items.parts.PartModels;
 import appeng.me.GridAccessException;
 import appeng.util.Platform;
@@ -46,7 +46,7 @@ public class PartP2PRedstone extends PartP2PTunnel<PartP2PRedstone>
 	private static final P2PModels MODELS = new P2PModels( "part/p2p/p2p_tunnel_redstone" );
 
 	@PartModels
-	public static List<ResourceLocation> getModels()
+	public static List<IPartModel> getModels()
 	{
 		return MODELS.getModels();
 	}
@@ -209,7 +209,7 @@ public class PartP2PRedstone extends PartP2PTunnel<PartP2PRedstone>
 	}
 
 	@Override
-	public List<ResourceLocation> getStaticModels()
+	public IPartModel getStaticModels()
 	{
 		return MODELS.getModel( isPowered(), isActive() );
 	}