Merge branch 'OC1.3-MC1.6.4' of github.com:MightyPirates/OpenComputers

Conflicts:
	build.properties

src/main/scala/li/cil/oc/common/EventHandler.scala

@@ -22,6 +22,8 @@ import net.minecraft.network.{INetworkManager, NetLoginHandler}
 import net.minecraft.server.MinecraftServer
 import net.minecraft.tileentity.TileEntity
 import net.minecraftforge.common.MinecraftForge
+import net.minecraftforge.event.ForgeSubscribe
+import net.minecraftforge.event.world.WorldEvent
 
 import scala.collection.mutable
 import scala.concurrent.ExecutionContext.Implicits.global
@@ -181,4 +183,14 @@ object EventHandler extends ITickHandler with IConnectionHandler with ICraftingH
   }
 
   override def onSmelting(player: EntityPlayer, item: ItemStack) {}
+
+  @ForgeSubscribe
+  def onWorldUnload(e: WorldEvent.Unload) {
+    if (!e.world.isRemote) {
+      import scala.collection.convert.WrapAsScala._
+      e.world.loadedTileEntityList.collect {
+        case te: tileentity.traits.TileEntity => te.onChunkUnload()
+      }
+    }
+  }
 }

src/main/scala/li/cil/oc/common/Proxy.scala

@@ -132,6 +132,7 @@ class Proxy {
     MinecraftForge.EVENT_BUS.register(AngelUpgradeHandler)
     MinecraftForge.EVENT_BUS.register(ChunkloaderUpgradeHandler)
     MinecraftForge.EVENT_BUS.register(ExperienceUpgradeHandler)
+    MinecraftForge.EVENT_BUS.register(EventHandler)
     MinecraftForge.EVENT_BUS.register(Loot)
     MinecraftForge.EVENT_BUS.register(RobotCommonHandler)
     MinecraftForge.EVENT_BUS.register(SaveHandler)

src/main/scala/li/cil/oc/common/tileentity/Adapter.scala

@@ -51,20 +51,27 @@ class Adapter extends traits.Environment with Analyzable {
             case Some(newDriver) => blocks(d.ordinal()) match {
               case Some((oldEnvironment, driver)) =>
                 if (newDriver != driver) {
-                  // This is... odd. Maybe moved by some other mod?
+                  // This is... odd. Maybe moved by some other mod? First, clean up.
-                  node.disconnect(oldEnvironment.node)
+                  blocks(d.ordinal()) = None
-                  val environment = newDriver.createEnvironment(world, x, y, z)
-                  blocks(d.ordinal()) = Some((environment, newDriver))
                   updatingBlocks -= oldEnvironment
+                  blocksData(d.ordinal()) = None
+                  node.disconnect(oldEnvironment.node)
+
+                  // Then rebuild - if we have something.
+                  val environment = newDriver.createEnvironment(world, x, y, z)
+                  if (environment != null) {
+                    blocks(d.ordinal()) = Some((environment, newDriver))
                     if (environment.canUpdate) {
                       updatingBlocks += environment
                     }
                     blocksData(d.ordinal()) = Some(new BlockData(environment.getClass.getName, new NBTTagCompound()))
                     node.connect(environment.node)
+                  }
                 } // else: the more things change, the more they stay the same.
               case _ =>
-                // A challenger appears.
+                // A challenger appears. Maybe.
                 val environment = newDriver.createEnvironment(world, x, y, z)
+                if (environment != null) {
                   blocks(d.ordinal()) = Some((environment, newDriver))
                   if (environment.canUpdate) {
                     updatingBlocks += environment
@@ -77,6 +84,7 @@ class Adapter extends traits.Environment with Analyzable {
                   blocksData(d.ordinal()) = Some(new BlockData(environment.getClass.getName, new NBTTagCompound()))
                   node.connect(environment.node)
                 }
+            }
             case _ => blocks(d.ordinal()) match {
               case Some((environment, driver)) =>
                 // We had something there, but it's gone now...

src/main/scala/li/cil/oc/common/tileentity/ServerRack.scala

@@ -265,13 +265,17 @@ class ServerRack extends traits.PowerAcceptor with traits.Hub with traits.PowerB
 
   override protected def initialize() {
     super.initialize()
+    if (isClient) {
       ServerRack.list += this -> Unit
     }
+  }
 
   override protected def dispose() {
     super.dispose()
+    if (isClient) {
       ServerRack.list -= this
     }
+  }
 
   override def readFromNBT(nbt: NBTTagCompound) {
     super.readFromNBT(nbt)

src/main/scala/li/cil/oc/server/component/Keyboard.scala

@@ -9,6 +9,7 @@ import li.cil.oc.api.network.{Message, Node, Visibility}
 import li.cil.oc.common.component
 import net.minecraft.entity.player.EntityPlayer
 import net.minecraftforge.common.MinecraftForge
+import net.minecraftforge.event.world.WorldEvent
 import net.minecraftforge.event.{Event, ForgeSubscribe}
 
 import scala.collection.mutable
@@ -45,6 +46,13 @@ class Keyboard(val owner: Container) extends component.ManagedComponent with api
     pressedKeys.remove(e.player)
   }
 
+  @ForgeSubscribe
+  def onWorldUnload(e: WorldEvent.Unload) {
+    try MinecraftForge.EVENT_BUS.unregister(this) catch {
+      case ignore: Throwable =>
+    }
+  }
+
   // ----------------------------------------------------------------------- //
 
   override def onConnect(node: Node) {

src/main/scala/li/cil/oc/server/component/machine/Machine.scala

@@ -491,7 +491,7 @@ class Machine(val owner: Owner, constructor: Constructor[_ <: Architecture]) ext
   }
 
   override def onDisconnect(node: Node) {
-    if (node == this.node) {
+    if (node == this.node) this.synchronized {
       close()
       tmp.foreach(_.node.remove())
     }