rudimentary keyboard input is working

assets/opencomputers/lua/gpu.lua

@@ -2,25 +2,25 @@
 driver.gpu = {}
 
 function driver.gpu.setResolution(gpu, screen, w, h)
-	sendToNode(gpu, "gpu.resolution=", screen, w, h)
+  sendToNode(gpu, "gpu.resolution=", screen, w, h)
 end
 
 function driver.gpu.getResolution(gpu, screen)
-	return sendToNode(gpu, "gpu.resolution", screen)
+  return sendToNode(gpu, "gpu.resolution", screen)
 end
 
 function driver.gpu.getResolutions(gpu, screen)
-	return sendToNode(gpu, "gpu.resolutions", screen)
+  return sendToNode(gpu, "gpu.resolutions", screen)
 end
 
 function driver.gpu.set(gpu, screen, col, row, value)
-	sendToNode(gpu, "gpu.set", screen, col, row, value)
+  sendToNode(gpu, "gpu.set", screen, col, row, value)
 end
 
 function driver.gpu.fill(gpu, screen, col, row, w, h, value)
-	sendToNode(gpu, "gpu.fill", screen, col, row, w, h, value:sub(1, 1))
+  sendToNode(gpu, "gpu.fill", screen, col, row, w, h, value:sub(1, 1))
 end
 
 function driver.gpu.copy(gpu, screen, col, row, w, h, tx, ty)
-	sendToNode(gpu, "gpu.copy", screen, col, row, w, h, tx, ty)
+  sendToNode(gpu, "gpu.copy", screen, col, row, w, h, tx, ty)
 end

assets/opencomputers/lua/init.lua

@@ -86,12 +86,15 @@ end
 
 -- Main OS loop, keeps everything else running.
 while true do
-  local signal, id = os.signal(nil, 2)
+  local signal, param = os.signal(nil, 2)
   if signal == "component_added" then
-    onInstall(id)
+    onInstall(param)
   elseif signal == "component_removed" then
-    onUninstall(id)
+    onUninstall(param)
+  elseif signal == "key_down" then
+    write(param)
+  else
+    write("Clock: ")
+    print(os.clock())
   end
-  write("Clock: ")
-  print(os.clock())
 end

assets/opencomputers/lua/keyboard.lua

@@ -0,0 +1,137 @@
+--[[ API for keyboards. ]]
+driver.keyboard = {}
+
+driver.keyboard.keys = {
+  ["1"]           = 0x02,
+  ["2"]           = 0x03,
+  ["3"]           = 0x04,
+  ["4"]           = 0x05,
+  ["5"]           = 0x06,
+  ["6"]           = 0x07,
+  ["7"]           = 0x08,
+  ["8"]           = 0x09,
+  ["9"]           = 0x0A,
+  ["0"]           = 0x0B,
+  a               = 0x1E,
+  b               = 0x30,
+  c               = 0x2E,
+  d               = 0x20,
+  e               = 0x12,
+  f               = 0x21,
+  g               = 0x22,
+  h               = 0x23,
+  i               = 0x17,
+  j               = 0x24,
+  k               = 0x25,
+  l               = 0x26,
+  m               = 0x32,
+  n               = 0x31,
+  o               = 0x18,
+  p               = 0x19,
+  q               = 0x10,
+  r               = 0x13,
+  s               = 0x1F,
+  t               = 0x14,
+  u               = 0x16,
+  v               = 0x2F,
+  w               = 0x11,
+  x               = 0x2D,
+  y               = 0x15,
+  z               = 0x2C,
+
+  apostrophe      = 0x28,
+  at              = 0x91,
+  back            = 0x0E, -- backspace
+  backslash       = 0x2B,
+  colon           = 0x92,
+  comma           = 0x33,
+  enter           = 0x1C,
+  equals          = 0x0D,
+  grave           = 0x29, -- accent grave
+  lbracket        = 0x1A,
+  lcontrol        = 0x1D,
+  lmenu           = 0x38, -- left Alt
+  lshift          = 0x2A,
+  minus           = 0x0C,
+  numlock         = 0x45,
+  pause           = 0xC5,
+  period          = 0x34,
+  rbracket        = 0x1B,
+  rcontrol        = 0x9D,
+  rmenu           = 0xB8, -- right Alt
+  rshift          = 0x36,
+  scroll          = 0x46, -- Scroll Lock
+  semicolon       = 0x27,
+  slash           = 0x35, -- / on main keyboard
+  space           = 0x39,
+  stop            = 0x95,
+  tab             = 0x0F,
+  underline       = 0x93,
+
+  -- Keypad (and numpad with numlock off)
+  up              = 0xC8,
+  down            = 0xD0,
+  left            = 0xCB,
+  right           = 0xCD,
+  home            = 0xC7,
+  ["end"]         = 0xCF,
+  pageUp          = 0xC9,
+  pageDown        = 0xD1,
+  insert          = 0xD2,
+  delete          = 0xD3,
+
+  -- Function keys
+  f1              = 0x3B,
+  f2              = 0x3C,
+  f3              = 0x3D,
+  f4              = 0x3E,
+  f5              = 0x3F,
+  f6              = 0x40,
+  f7              = 0x41,
+  f8              = 0x42,
+  f9              = 0x43,
+  f10             = 0x44,
+  f11             = 0x57,
+  f12             = 0x58,
+  f13             = 0x64,
+  f14             = 0x65,
+  f15             = 0x66,
+  f16             = 0x67,
+  f17             = 0x68,
+  f18             = 0x69,
+  f19             = 0x71,
+
+  -- Japanese keyboards
+  kana            = 0x70,
+  kanji           = 0x94,
+  convert         = 0x79,
+  noconvert       = 0x7B,
+  yen             = 0x7D,
+  circumflex      = 0x90,
+  ax              = 0x96,
+
+  -- Numpad
+  numpad0         = 0x52,
+  numpad1         = 0x4F,
+  numpad2         = 0x50,
+  numpad3         = 0x51,
+  numpad4         = 0x4B,
+  numpad5         = 0x4C,
+  numpad6         = 0x4D,
+  numpad7         = 0x47,
+  numpad8         = 0x48,
+  numpad9         = 0x49,
+  numpadmul       = 0x37,
+  numpaddiv       = 0xB5,
+  numpadsub       = 0x4A,
+  numpadadd       = 0x4E,
+  numpaddecimal   = 0x53,
+  numpadcomma     = 0xB3,
+  numpadenter     = 0x9C,
+  numpadequals    = 0x8D,
+}
+
+-- Create inverse mapping for name lookup.
+for k, v in pairs(driver.keyboard.keys) do
+  driver.keyboard.keys[v] = k
+end

li/cil/oc/Blocks.scala

@@ -1,15 +1,13 @@
 package li.cil.oc
 
-import li.cil.oc.common.block.BlockComputer
+import li.cil.oc.common.block._
-import li.cil.oc.common.block.BlockMulti
-import li.cil.oc.common.block.BlockScreen
-import li.cil.oc.common.block.BlockSpecialMulti
 
 object Blocks {
   var blockSimple: BlockMulti = null
   var blockSpecial: BlockMulti = null
   var computer: BlockComputer = null
   var screen: BlockScreen = null
+  var keyboard: BlockKeyboard = null
 
   def init() {
     // IMPORTANT: the multi block must come first, since the sub blocks will
@@ -20,5 +18,6 @@ object Blocks {
 
     computer = new BlockComputer(blockSimple)
     screen = new BlockScreen(blockSimple)
+    keyboard = new BlockKeyboard(blockSpecial)
   }
 }

li/cil/oc/api/IBlockDriver.scala

@@ -1,6 +1,5 @@
 package li.cil.oc.api
 
-import _root_.scala.beans.BeanProperty
 import net.minecraft.world.World
 
 /**
@@ -10,6 +9,9 @@ import net.minecraft.world.World
  * placed in the world, but cannot be modified to or don't want to have their
  * `TileEntities` implement `INetworkNode`.
  * <p/>
+ * A block driver is used by proxy blocks to check its neighbors and whether
+ * those neighbors should be treated as components or not.
+ * <p/>
  * Note that it is possible to write one driver that supports as many different
  * blocks as you wish. I'd recommend writing one per device (type), though, to
  * keep things modular.
@@ -34,15 +36,17 @@ trait IBlockDriver extends IDriver {
   /**
    * Get a reference to the network node wrapping the specified block.
    * <p/>
-   * This is used to provide context to the driver's methods, for example when
+   * This is used to connect the component to the component network when it is
-   * an API method is called this will always be passed as the first parameter.
+   * detected next to a proxy. Components that are not part of the component
+   * network probably don't make much sense (can't think of any uses at this
+   * time), but you may still opt to not implement this.
    *
-   * @param world the world in which the block to get the component for lives.
+   * @param world the world in which the block to get the node for lives.
-   * @param x     the X coordinate of the block to get the component for.
+   * @param x     the X coordinate of the block to get the node for.
-   * @param y     the Y coordinate of the block to get the component for.
+   * @param y     the Y coordinate of the block to get the node for.
-   * @param z     the Z coordinate of the block to get the component for.
+   * @param z     the Z coordinate of the block to get the node for.
-   * @return the block component at that location, controlled by this driver.
+   * @return the network node for the block at that location.
    */
-  @BeanProperty
+  def node(world: World, x: Int, y: Int, z: Int): INetworkNode =
-  def node(world: World, x: Int, y: Int, z: Int): INetworkNode
+    world.getBlockTileEntity(x, y, z).asInstanceOf[INetworkNode]
 }

li/cil/oc/api/IDriver.scala

@@ -10,36 +10,36 @@ import java.io.InputStream
  * Lua state when the driver is installed, and provide general information used
  * by the computer.
  * <p/>
- * Note that drivers themselves are singletons. They can define a parameter of
+ * Do not implement this interface directly; use the `IItemDriver` and
- * type {@link IComputerContext} in their API functions which will hold the
+ * `IBlockDriver` interfaces for the respective component types.
- * context in which they are called - essentially a representation of the
- * computer they were called form. This context can be used to get a component
- * in the computer (e.g. passed as another parameter) and to send signals to the
- * computer.
- * <p/>
- * Do not implement this interface directly; use the {@link IItemDriver} and
- * {@link IBlockDriver} interfaces for the respective component types.
  */
 trait IDriver {
   /**
    * Some initialization code that is run when the driver is installed.
    * <p/>
-   * This is loaded
+   * These will usually be some functions that generate network messages of
-   * into the Lua state and run in the global, un-sandboxed environment. This
+   * the particular signature the node of the driver handles, but may contain
-   * means your scripts can mess things up bad, so make sure you know what
+   * arbitrary other functions. However, whatever you do, keep in mind that
-   * you're doing and exposing.
+   * only certain parts of the global namespace will be made available to the
+   * computer at runtime, so it's best to keep all you declare in the driver
+   * table (global variable `driver`).
    * <p/>
-   * This can be null to do nothing. Otherwise this is expected to be valid Lua
+   * This is loaded into the Lua state and run in the global, un-sandboxed
-   * code (it is simply loaded via <code>load()</code> and then executed).
+   * environment. This means your scripts can mess things up bad, so make sure
+   * you know what you're doing and exposing.
+   * <p/>
+   * This can be `None` to do nothing. Otherwise this is expected to be valid
+   * Lua code (it is simply loaded via <code>load()</code> and then executed).
    * <p/>
    * The stream has to be recreated each time this is called. Normally you will
    * return something along the lines of
-   * <code>Mod.class.getResourceAsStream("/assets/mod/lua/ocapi.lua")</code>
+   * `Mod.class.getResourceAsStream("/assets/yourmod/lua/ocapi.lua")`
    * from this method. If you wish to hard-code the returned script, you can use
-   * <code>new ByteArrayInputStream(yourScript.getBytes())</code> instead. Note
+   * `new ByteArrayInputStream(yourScript.getBytes())` instead.
-   * that the stream will automatically closed.
+   * <p/>
+   * IMPORTANT: Note that the stream will automatically closed.
    *
-   * @return the Lua code to run after installing the API table.
+   * @return the Lua code to run when a computer is started up.
    */
   def api: Option[InputStream] = None
 }

li/cil/oc/api/IItemDriver.scala

@@ -13,7 +13,7 @@ import net.minecraft.item.ItemStack
  * queried using the drivers' `worksWith` functions. The first driver that
  * replies positively and whose check against the slot type is successful, i.e.
  * for which the `componentType` matches the slot, will be used as the
- * component's driver and the component will be installed. If no driver is found
+ * component's driver and the component will be added. If no driver is found
  * the item will be rejected and cannot be installed.
  * <p/>
  * Note that it is possible to write one driver that supports as many different
@@ -47,6 +47,11 @@ trait IItemDriver extends IDriver {
 
   /**
    * Gets a reference to the network node interfacing the specified item.
+   * <p/>
+   * This is used to connect the component to the component network when it is
+   * added to a computer, for example. Components that are not part of the
+   * component network probably don't make much sense (can't think of any uses
+   * at this time), but you may still opt to not implement this.
    *
    * @param item the item instance for which to get the node.
    * @return the network node for that item.

li/cil/oc/client/PacketSender.scala

@@ -27,20 +27,22 @@ object PacketSender {
     pb.sendToServer()
   }
 
-  def sendKeyDown[T <: TileEntity with INetworkNode](t: T, c: Char) = {
+  def sendKeyDown[T <: TileEntity with INetworkNode](t: T, char: Char, code: Int) = {
     val pb = new PacketBuilder(PacketType.KeyDown)
 
     pb.writeTileEntity(t)
-    pb.writeChar(c)
+    pb.writeChar(char)
+    pb.writeInt(code)
 
     pb.sendToServer()
   }
 
-  def sendKeyUp[T <: TileEntity with INetworkNode](t: T, c: Char) = {
+  def sendKeyUp[T <: TileEntity with INetworkNode](t: T, char: Char, code: Int) = {
     val pb = new PacketBuilder(PacketType.KeyUp)
 
     pb.writeTileEntity(t)
-    pb.writeChar(c)
+    pb.writeChar(char)
+    pb.writeInt(code)
 
     pb.sendToServer()
   }

li/cil/oc/client/gui/GuiScreen.scala

@@ -1,13 +1,11 @@
 package li.cil.oc.client.gui
 
 import li.cil.oc.client.PacketSender
-import li.cil.oc.common.tileentity.TileEntityKeyboard
 import li.cil.oc.common.tileentity.TileEntityScreen
 import net.minecraft.client.renderer.GLAllocation
 import net.minecraft.client.renderer.Tessellator
 import net.minecraft.client.renderer.texture.TextureManager
 import net.minecraft.util.ResourceLocation
-import net.minecraftforge.common.ForgeDirection
 import org.lwjgl.input.Keyboard
 import org.lwjgl.opengl.GL11
 
@@ -49,16 +47,15 @@ class GuiScreen(val tileEntity: TileEntityScreen) extends net.minecraft.client.g
   /** Must be called whenever the buffer of the underlying screen changes. */
   def updateText() = GuiScreen.compileText(scale, tileEntity.screen.lines)
 
-  override def handleKeyboardInput() = {
+  override def keyTyped(char: Char, code: Int) = {
-    // Find all keyboards next to this screen and type on them.
+    super.keyTyped(char, code)
-    for (k <- neighboringKeyboards) {
+    if (code != Keyboard.KEY_ESCAPE && code != Keyboard.KEY_F11)
       if (Keyboard.getEventKeyState) {
-        PacketSender.sendKeyDown(k, Keyboard.getEventCharacter)
+        PacketSender.sendKeyDown(tileEntity, char, code)
       }
       else {
-        PacketSender.sendKeyUp(k, Keyboard.getEventCharacter)
+        PacketSender.sendKeyUp(tileEntity, char, code)
       }
-    }
   }
 
   override def initGui() = {
@@ -85,16 +82,6 @@ class GuiScreen(val tileEntity: TileEntityScreen) extends net.minecraft.client.g
   }
 
   override def doesGuiPauseGame = false
-
-  private def neighboringKeyboards =
-    ForgeDirection.VALID_DIRECTIONS.
-      map(d => tileEntity.worldObj.getBlockTileEntity(
-      tileEntity.xCoord + d.offsetX,
-      tileEntity.yCoord + d.offsetY,
-      tileEntity.zCoord + d.offsetZ)).
-      filter(_ != null).
-      filter(_.isInstanceOf[TileEntityKeyboard]).
-      map(_.asInstanceOf[TileEntityKeyboard])
 }
 
 /** We cache OpenGL stuff in a singleton to avoid having to re-allocate. */

li/cil/oc/common/Proxy.scala

@@ -30,6 +30,7 @@ class Proxy {
     NetworkRegistry.instance.registerGuiHandler(OpenComputers, GuiHandler)
 
     OpenComputersAPI.addDriver(GraphicsCardDriver)
+    OpenComputersAPI.addDriver(KeyboardDriver)
 
     MinecraftForge.EVENT_BUS.register(ForgeEventHandler)
   }

li/cil/oc/common/tileentity/TileEntityComputer.scala

@@ -19,14 +19,16 @@ class TileEntityComputer(isClient: Boolean) extends TileEntityRotatable with ICo
 
   private val hasChanged = new AtomicBoolean(true)
 
-  private var isRunning = computer.isRunning
+  private var isRunning = false
 
   // ----------------------------------------------------------------------- //
   // NetworkNode
   // ----------------------------------------------------------------------- //
 
   override def receive(message: INetworkMessage) = message.data match {
-    case Array() if message.name == "network.connect" =>
+    // The isRunning check is here to avoid network.connect messages being sent
+    // while loading a chunk (thus leading to "false" component_added signals).
+    case Array() if message.name == "network.connect" && isRunning =>
       computer.signal("component_added", message.source.address); None
     case Array() if message.name == "network.disconnect" =>
       computer.signal("component_removed", message.source.address); None

li/cil/oc/common/tileentity/TileEntityKeyboard.scala

@@ -7,16 +7,16 @@ class TileEntityKeyboard extends TileEntityRotatable with INetworkNode {
   override def name = "keyboard"
 
   override def receive(message: INetworkMessage) = message.data match {
-    case Array(name: String, p: Player, c: Character) if name == "keyboard.keyDown" => {
+    case Array(p: Player, char: Char, code: Int) if message.name == "keyboard.keyDown" => {
       // TODO check if player is close enough and only consume message if so
-      network.sendToAll(this, "signal", "key_down", c)
+      network.sendToAll(this, "signal", "key_down", char.toString, code)
-      message.cancel()
+      message.cancel() // One keyboard is enough.
       None
     }
-    case Array(name: String, p: Player, c: Character) if name == "keyboard.keyUp" => {
+    case Array(p: Player, char: Char, code: Int) if message.name == "keyboard.keyUp" => {
       // TODO check if player is close enough and only consume message if so
-      network.sendToAll(this, "signal", "key_up", c)
+      network.sendToAll(this, "signal", "key_up", char.toString, code)
-      message.cancel()
+      message.cancel() // One keyboard is enough.
       None
     }
     case _ => None

li/cil/oc/server/PacketHandler.scala

@@ -67,12 +67,12 @@ class PacketHandler extends CommonPacketHandler {
   def onKeyDown(p: PacketParser) =
     p.readTileEntity[INetworkNode]() match {
       case None => // Invalid packet.
-      case Some(n) => n.network.sendToAll(n, "keyboard.keyDown", p.player, p.readChar())
+      case Some(n) => n.network.sendToAll(n, "keyboard.keyDown", p.player, p.readChar(), p.readInt())
     }
 
   def onKeyUp(p: PacketParser) =
     p.readTileEntity[INetworkNode]() match {
       case None => // Invalid packet.
-      case Some(n) => n.network.sendToAll(n, "keyboard.keyUp", p.player, p.readChar())
+      case Some(n) => n.network.sendToAll(n, "keyboard.keyUp", p.player, p.readChar(), p.readInt())
     }
 }

li/cil/oc/server/computer/Computer.scala

@@ -660,12 +660,13 @@ class Computer(val owner: IComputerEnvironment) extends IComputer with Runnable
             // resuming the state again.
             val sleep = (lua.toNumber(2) * 1000).toLong
             lua.pop(results)
-            state = State.Sleeping
+            if (signals.isEmpty) {
-            future = Some(Executor.pool.
+              state = State.Sleeping
-              schedule(this, sleep, TimeUnit.MILLISECONDS))
+              future = Some(Executor.pool.schedule(this, sleep, TimeUnit.MILLISECONDS))
+            } else future = Some(Executor.pool.submit(this))
           }
           else if (results == 1 && lua.isFunction(2)) {
-            // If we get one function it's a wrapper for a driver call.
+            // If we get one function it's a wrapper for a synchronized call.
             state = State.SynchronizedCall
             future = None
           }
@@ -673,7 +674,8 @@ class Computer(val owner: IComputerEnvironment) extends IComputer with Runnable
             // Something else, just pop the results and try again.
             lua.pop(results)
             state = State.Suspended
-            future = Some(Executor.pool.submit(this))
+            if (signals.isEmpty) future = None
+            else future = Some(Executor.pool.submit(this))
           }
         }
 

li/cil/oc/server/computer/Network.scala

@@ -1,5 +1,6 @@
 package li.cil.oc.server.computer
 
+import li.cil.oc.OpenComputers
 import li.cil.oc.api.INetwork
 import li.cil.oc.api.INetworkMessage
 import li.cil.oc.api.INetworkNode
@@ -35,10 +36,9 @@ class Network private(private val nodes: mutable.Map[Int, ArrayBuffer[Network.No
 
   nodes.values.flatten.foreach(_.data.network = this)
 
-  def connect(nodeA: INetworkNode, nodeB: INetworkNode) = try {
+  def connect(nodeA: INetworkNode, nodeB: INetworkNode) = {
     if (locked) throw new IllegalStateException(
       "Cannot modify network while it is already updating its structure.")
-    locked = true
 
     val containsA = nodes.get(nodeA.address).exists(_.exists(_.data == nodeA))
     val containsB = nodes.get(nodeB.address).exists(_.exists(_.data == nodeB))
@@ -66,9 +66,6 @@ class Network private(private val nodes: mutable.Map[Int, ArrayBuffer[Network.No
     else if (containsA) add(nodes(nodeA.address).find(_.data == nodeA).get, nodeB)
     else add(nodes(nodeB.address).find(_.data == nodeB).get, nodeA)
   }
-  finally {
-    locked = false
-  }
 
   def remove(node: INetworkNode) = nodes.get(node.address) match {
     case None => false
@@ -103,9 +100,14 @@ class Network private(private val nodes: mutable.Map[Int, ArrayBuffer[Network.No
   private def send(message: Network.Message, nodes: Iterator[INetworkNode]) = {
     var result = None: Option[Array[Any]]
     while (!message.isCanceled && nodes.hasNext) {
-      nodes.next().receive(message) match {
+      try {
-        case None => // Ignore.
+        nodes.next().receive(message) match {
-        case r => result = r
+          case None => // Ignore.
+          case r => result = r
+        }
+      } catch {
+        case e: Throwable =>
+          OpenComputers.log.warning("Error in message handler:\n" + e.getStackTraceString)
       }
     }
     result
@@ -124,7 +126,6 @@ class Network private(private val nodes: mutable.Map[Int, ArrayBuffer[Network.No
       newNode
     }
     else {
-      val otherNetwork = node.network.asInstanceOf[Network]
       // We have to merge. First create a copy of the old nodes to have the
       // list of nodes to which to send "network.connect" messages.
       val oldNodes = nodes.values.flatten.map(_.data).toArray
@@ -132,7 +133,12 @@ class Network private(private val nodes: mutable.Map[Int, ArrayBuffer[Network.No
       // iteration to merge into this network, used to send "network.reconnect"
       // messages to old nodes in case we have to change a node's address to
       // ensure unique addresses in the merged network.
+      val otherNetwork = node.network.asInstanceOf[Network]
       val otherNodes = otherNetwork.nodes.values.flatten.map(_.data)
+      // Lock this network to avoid message handlers adding nodes, which could
+      // lead to addresses getting taken that we will need for the nodes we are
+      // about to merge into this network.
+      locked = true
       // Pre-merge step: ensure addresses are unique.
       for (node <- otherNodes if nodes.contains(node.address)) {
         val oldAddress = node.address
@@ -148,6 +154,8 @@ class Network private(private val nodes: mutable.Map[Int, ArrayBuffer[Network.No
         node.data.network = this
         send(new Network.Message(node.data, "network.connect"), oldNodes.iterator)
       }
+      // Done, unlock again.
+      locked = false
       // Return the node object of the newly connected node for the next step.
       nodes(node.address).find(_.data == node).get
     }

li/cil/oc/server/drivers/KeyboardDriver.scala

@@ -0,0 +1,12 @@
+package li.cil.oc.server.drivers
+
+import li.cil.oc.Blocks
+import li.cil.oc.api.IBlockDriver
+import net.minecraft.world.World
+
+object KeyboardDriver extends IBlockDriver {
+  override def api = Option(getClass.getResourceAsStream("/assets/opencomputers/lua/keyboard.lua"))
+
+  override def worksWith(world: World, x: Int, y: Int, z: Int) =
+    world.getBlockId(x, y, z) == Blocks.keyboard.blockId
+}