Added scan method for abstract bus.

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

@@ -85,6 +85,7 @@ class Proxy {
     api.Driver.add(driver.item.WirelessNetworkCard)
 
     if (Mods.StargateTech2.isAvailable) {
+      api.Driver.add(driver.converter.BusPacketNetScanDevice)
       api.Driver.add(driver.item.AbstractBusCard)
     }
     if (Mods.ComputerCraft15.isAvailable) {

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

@@ -21,7 +21,7 @@ class AbstractBus(val device: IBusDevice) extends component.ManagedComponent wit
 
   protected var address = 0
 
-  protected var sendQueue: Option[QueuedPacket] = None
+  protected var sendQueue: Option[BusPacket[_]] = None
 
   protected var owner: Option[Context] = None
 
@@ -40,18 +40,11 @@ class AbstractBus(val device: IBusDevice) extends component.ManagedComponent wit
     owner.foreach(_.signal("bus_message", Int.box(packet.getProtocolID), Int.box(packet.getSender), Int.box(packet.getTarget), data, metadata))
   }
 
-  override def getNextPacketToSend = if (sendQueue.isDefined) {
-    val info = sendQueue.get
+  override def getNextPacketToSend = this.synchronized {
+    val packet = sendQueue.orNull
     sendQueue = None
-    val packet = new BusPacketLIP(info.sender, info.target)
-    for ((key, value) <- info.data) {
-      packet.set(key, value)
-    }
-    packet.setMetadata(new BusPacketLIP.LIPMetadata("OpenComputers", node.address, null))
-    packet.finish()
     packet
   }
-  else null
 
   override def isInterfaceEnabled = isEnabled
 
@@ -78,17 +71,46 @@ class AbstractBus(val device: IBusDevice) extends component.ManagedComponent wit
   }
 
   @Callback(doc = """function(address:number, data:table):boolean -- Sends data across the abstract bus.""")
-  def send(context: Context, args: Arguments): Array[AnyRef] = {
+  def send(context: Context, args: Arguments): Array[AnyRef] = this.synchronized {
     val target = args.checkInteger(0) & 0xFFFF
     val data = args.checkTable(1)
     if (node.tryChangeBuffer(-Settings.get.abstractBusPacketCost)) {
-      sendQueue = Some(new QueuedPacket(address.toShort, target.toShort, Map(data.toSeq.map(entry => (entry._1.toString, entry._2.toString)): _*)))
+      val packet = new BusPacketLIP(address.toShort, target.toShort)
+      var size = 0
+      def checkSize(add: Int) {
+        size += add
+        if (size > Settings.get.maxNetworkPacketSize) {
+          throw new IllegalArgumentException("packet too big (max " + Settings.get.maxNetworkPacketSize + ")")
+        }
+      }
+      for ((key, value) <- data) {
+        val keyAsString = key.toString
+        checkSize(keyAsString.length)
+        val valueAsString = value.toString
+        checkSize(valueAsString.length)
+        packet.set(keyAsString, valueAsString)
+      }
+      packet.setMetadata(new BusPacketLIP.LIPMetadata("OpenComputers", node.address, null))
+      packet.finish()
+      sendQueue = Some(packet)
       busInterface.sendAllPackets()
       result(true)
     }
     else result(Unit, "not enough energy")
   }
 
+  @Callback(doc = """function(mask:number):table -- Scans the network for other devices.""")
+  def scan(context: Context, args: Arguments): Array[AnyRef] = this.synchronized {
+    val mask = (args.checkInteger(0) & 0xFFFF).toShort
+    if (node.tryChangeBuffer(-Settings.get.abstractBusPacketCost)) {
+      val packet = new BusPacketNetScan(mask)
+      sendQueue = Some(packet)
+      busInterface.sendAllPackets()
+      Array(packet.getDevices.toArray)
+    }
+    else Array(Unit, "not enough energy")
+  }
+
   @Callback(direct = true, doc = """function():number -- The maximum packet size that can be sent over the bus.""")
   def maxPacketSize(context: Context, args: Arguments): Array[AnyRef] = result(Settings.get.maxNetworkPacketSize)
 
@@ -124,17 +146,4 @@ class AbstractBus(val device: IBusDevice) extends component.ManagedComponent wit
     nbt.setBoolean("enabled", isEnabled)
     nbt.setInteger("address", address)
   }
-
-  protected class QueuedPacket(val sender: Short, val target: Short, val data: Map[String, String]) {
-    // Extra braces because we don't want/have to keep size as a field.
-    {
-      val size = data.foldLeft(0)((acc, arg) => {
-        acc + arg._1.length + arg._2.length
-      })
-      if (size > Settings.get.maxNetworkPacketSize) {
-        throw new IllegalArgumentException("packet too big (max " + Settings.get.maxNetworkPacketSize + ")")
-      }
-    }
-  }
-
 }

src/main/scala/li/cil/oc/server/driver/converter/BusPacketNetScanDevice.scala

@@ -0,0 +1,21 @@
+package li.cil.oc.server.driver.converter
+
+import java.util
+import li.cil.oc.api
+import scala.collection.convert.WrapAsScala._
+import stargatetech2.api.bus.BusPacketNetScan
+
+object BusPacketNetScanDevice extends api.driver.Converter {
+  override def convert(value: scala.Any, output: util.Map[AnyRef, AnyRef]) =
+    value match {
+      case device: BusPacketNetScan.Device =>
+        output += "address" -> Short.box(device.address)
+        output += "name" -> device.name
+        output += "description" -> device.description
+        output += "enabled" -> Boolean.box(device.enabled)
+        output += "x" -> Int.box(device.x)
+        output += "y" -> Int.box(device.y)
+        output += "z" -> Int.box(device.z)
+      case _ =>
+    }
+}