From c067f5905d908d7fc39483f4be00733879062a2d Mon Sep 17 00:00:00 2001
From: Sebastian Hartte <sebastian@hartte.de>
Date: Sun, 23 Jun 2019 14:16:46 +0800
Subject: [PATCH] Fixes #24: IndexOutOfBoundsException with FMP parts.

(cherry picked from commit e67969f52f7edd3dfdbda04dc8b3f1bcca4867b1)
---
 .../appeng/parts/networking/PartCable.java    | 37 ++++++++++---------
 1 file changed, 19 insertions(+), 18 deletions(-)

diff --git a/src/main/java/appeng/parts/networking/PartCable.java b/src/main/java/appeng/parts/networking/PartCable.java
index 335b8c93..2607ca9b 100644
--- a/src/main/java/appeng/parts/networking/PartCable.java
+++ b/src/main/java/appeng/parts/networking/PartCable.java
@@ -471,27 +471,28 @@ public class PartCable extends AEBasePart implements IPartCable
 		boolean[] writeSide = new boolean[ForgeDirection.VALID_DIRECTIONS.length];
 		int[] channelsPerSide = new int[ForgeDirection.VALID_DIRECTIONS.length];
 
+		for( final ForgeDirection thisSide : ForgeDirection.VALID_DIRECTIONS )
+		{
+			final IPart part = this.getHost().getPart( thisSide );
+			if( part != null )
+			{
+				writeSide[thisSide.ordinal()] = true;
+				int channels = 0;
+				if( part.getGridNode() != null )
+				{
+					final IReadOnlyCollection<IGridConnection> set = part.getGridNode().getConnections();
+					for( final IGridConnection gc : set )
+					{
+						channels = Math.max( channels, gc.getUsedChannels() );
+					}
+				}
+				channelsPerSide[thisSide.ordinal()] = channels;
+			}
+		}
+
 		IGridNode n = this.getGridNode();
 		if( n != null )
 		{
-			for( final ForgeDirection thisSide : ForgeDirection.VALID_DIRECTIONS )
-			{
-				final IPart part = this.getHost().getPart( thisSide );
-				if( part != null )
-				{
-					if( part.getGridNode() != null )
-					{
-						writeSide[thisSide.ordinal()] = true;
-
-						final IReadOnlyCollection<IGridConnection> set = part.getGridNode().getConnections();
-						for( final IGridConnection gc : set )
-						{
-							channelsPerSide[thisSide.ordinal()] = gc.getUsedChannels();
-						}
-					}
-				}
-			}
-
 			for( final IGridConnection gc : n.getConnections() )
 			{
 				final ForgeDirection side = gc.getDirection( n );