p2p fixes redton, light, items

src/main/java/appeng/parts/p2p/PartP2PItems.java

@@ -76,11 +76,14 @@ public class PartP2PItems extends PartP2PTunnel<PartP2PItems> implements IItemHa
 		this.cachedInv = null;
 		try
 		{
-			for( PartP2PItems input : this.getInputs() )
+			if( this.isOutput() )
 			{
-				if( input != null && this.isOutput() )
+				for( PartP2PItems input : this.getInputs() )
 				{
-					input.onTunnelNetworkChange();
+					if( input != null )
+					{
+						input.onTunnelNetworkChange();
+					}
 				}
 			}
 		}

src/main/java/appeng/parts/p2p/PartP2PLight.java

@@ -41,6 +41,7 @@ import appeng.api.parts.IPartModel;
 import appeng.core.settings.TickRates;
 import appeng.items.parts.PartModels;
 import appeng.me.GridAccessException;
+import org.apache.logging.log4j.core.appender.rolling.action.IfAll;
 
 
 public class PartP2PLight extends PartP2PTunnel<PartP2PLight> implements IGridTickable
@@ -198,17 +199,24 @@ public class PartP2PLight extends PartP2PTunnel<PartP2PLight> implements IGridTi
 		{
 			try
 			{
+				boolean hasValidInput = false;
+				int light = 0;
 				for( PartP2PLight src : this.getInputs() )
 				{
 					if( src != null && src.getProxy().isActive() )
 					{
-						this.setLightLevel( src.lastValue );
-					}
-					else
-					{
-						this.getHost().markForUpdate();
+						hasValidInput = true;
+						light = Math.max( light, src.lastValue );
 					}
 				}
+				if( hasValidInput )
+				{
+					this.setLightLevel( light );
+				}
+				else
+				{
+					this.getHost().markForUpdate();
+				}
 			}
 			catch( GridAccessException e )
 			{

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

@@ -72,13 +72,15 @@ public class PartP2PRedstone extends PartP2PTunnel<PartP2PRedstone>
 		{
 			try
 			{
+				int power = 0;
 				for( PartP2PRedstone in : this.getInputs() )
 				{
 					if( in != null )
 					{
-						this.putInput( in.power );
+						power = Math.max( power, in.power );
 					}
 				}
+				this.putInput( power );
 			}
 			catch( GridAccessException e )
 			{
@@ -176,7 +178,22 @@ public class PartP2PRedstone extends PartP2PTunnel<PartP2PRedstone>
 
 				this.power = b.getWeakPower( state, this.getTile().getWorld(), target, srcSide );
 				this.power = Math.max( this.power, b.getWeakPower( state, this.getTile().getWorld(), target, srcSide ) );
-				this.sendToOutput( this.power );
+				int powerOut = this.power;
+				try
+				{
+					for( PartP2PRedstone in : this.getInputs() )
+					{
+						if( in != null )
+						{
+							powerOut = Math.max( in.power, powerOut );
+						}
+					}
+				}
+				catch( GridAccessException e )
+				{
+					e.printStackTrace();
+				}
+				this.sendToOutput( powerOut );
 			}
 			else
 			{