Added one-slot inventory to charger, can be used to charge tablets.

build.properties

@@ -1,6 +1,6 @@
 minecraft.version=1.6.4
 forge.version=9.11.1.964
-oc.version=1.3.4
+oc.version=1.3.5
 oc.subversion=dev
 ccl.version=1.0.0.62
 fmp.version=1.0.1.268

src/main/resources/application.conf

@@ -442,6 +442,10 @@ opencomputers {
       # charge robots at roughly half speed.
       chargerChargeRate: 100.0
 
+      # The amount of energy a Charger transfers into a tablet, if present, per
+      # tick. This is also based on configured charge speed, as for robots.
+      chargerChargeRateTablet: 10.0
+
       # The energy efficiency of the generator upgrade. At 1.0 this will
       # generate as much energy as you'd get by burning the fuel in a BuildCraft
       # Stirling Engine (1MJ per fuel value / burn ticks). To discourage fully
@@ -496,7 +500,7 @@ opencomputers {
           computer: 500.0
 
           # The amount of energy robots can store in their internal buffer.
-          robot: 50000.0
+          robot: 20000.0
 
           # The amount of energy a converter can store. This allows directly
           # connecting a converter to a distributor, without having to have a
@@ -509,6 +513,9 @@ opencomputers {
           # to exchange energy. This basically controls the bandwidth. You can
           # add capacitors between two distributors to increase this bandwidth.
           distributor: 500
+
+          # The amount a tablet can store in its internal buffer.
+          tablet: 10000
       }
 
       # Default "costs", i.e. how much energy certain operations consume.

src/main/resources/assets/opencomputers/lang/de_DE.lang

@@ -166,6 +166,7 @@ oc:gui.Terminal.OutOfRange=Kein Signal.
 # Containers
 oc:container.AccessPoint=Access Point
 oc:container.Case=Computer
+oc:containertile.Charger=Ladestation
 oc:container.Disassembler=Recycler
 oc:container.DiskDrive=Diskettenlaufwerk
 oc:container.Server=Server

src/main/resources/assets/opencomputers/lang/en_US.lang

@@ -165,6 +165,7 @@ oc:gui.Terminal.OutOfRange=No signal.
 
 # Containers
 oc:container.AccessPoint=Access Point
+oc:container.Charger=Charger
 oc:container.Case=Computer
 oc:container.Disassembler=Disassembler
 oc:container.DiskDrive=Disk Drive

src/main/resources/assets/opencomputers/lang/fr_FR.lang

@@ -78,6 +78,7 @@ oc:gui.Robot.TurnOn=Allumer
 
 # Containers
 oc:container.Case=Ordinateur
+oc:container.Charger=Chargeur
 oc:container.DiskDrive=Disque dur
 oc:container.Switch=Routeur
 

src/main/resources/assets/opencomputers/lang/pt_PT.lang

@@ -81,6 +81,7 @@ oc:gui.Robot.TurnOn=Ligar
 
 # Containers
 oc:container.Case=Computador
+oc:container.Charger=Carregador
 oc:container.DiskDrive=Drive de Disquetes
 oc:container.Switch=Roteador
 

src/main/resources/assets/opencomputers/lang/ru_RU.lang

@@ -160,6 +160,7 @@ oc:gui.Terminal.OutOfRange=Нет сигнала.
 # Containers
 oc:container.AccessPoint=Точка доступа
 oc:container.Case=Компьютер
+oc:container.Charger=Зарядник
 oc:container.Disassembler=Разборщик
 oc:container.DiskDrive=Дисковод
 oc:container.Server=Сервер

src/main/resources/assets/opencomputers/lang/zh_CN.lang

@@ -166,6 +166,7 @@ oc:gui.Terminal.OutOfRange=无信号.
 # Containers
 oc:container.AccessPoint=桥接器
 oc:container.Case=计算机
+oc:container.Charger=充电器
 oc:container.Disassembler=分解器
 oc:container.DiskDrive=磁盘驱动器
 oc:container.Server=服务器

src/main/resources/assets/opencomputers/lang/zh_TW.lang

@@ -160,6 +160,7 @@ oc:gui.Terminal.OutOfRange=沒訊號.
 # Containers
 oc:container.AccessPoint=存取點
 oc:container.Case=電腦
+oc:container.Charger=充電器
 oc:container.Disassembler=拆解機
 oc:container.DiskDrive=硬碟
 oc:container.Server=伺服器

src/main/scala/li/cil/oc/Settings.scala

@@ -127,7 +127,8 @@ class Settings(config: Config) {
   val pureIgnorePower = config.getBoolean("power.ignorePower")
   lazy val ignorePower = pureIgnorePower || !Mods.isPowerProvidingModPresent
   val tickFrequency = config.getDouble("power.tickFrequency") max 1
-  val chargeRate = config.getDouble("power.chargerChargeRate")
+  val chargeRateRobot = config.getDouble("power.chargerChargeRate")
+  val chargeRateTablet = config.getDouble("power.chargerChargeRateTablet")
   val generatorEfficiency = config.getDouble("power.generatorEfficiency")
   val solarGeneratorEfficiency = config.getDouble("power.solarGeneratorEfficiency")
   val assemblerTickAmount = config.getDouble("power.assemblerTickAmount") max 1
@@ -148,6 +149,7 @@ class Settings(config: Config) {
       OpenComputers.log.warning("Bad number of battery upgrade buffer sizes, ignoring.")
       Array(10000.0, 15000.0, 20000.0)
   }
+  val bufferTablet = config.getDouble("power.buffer.tablet") max 0
 
   // power.cost
   val computerCost = config.getDouble("power.cost.computer") max 0

src/main/scala/li/cil/oc/client/GuiHandler.scala

@@ -14,6 +14,8 @@ object GuiHandler extends CommonGuiHandler {
     world.getBlockTileEntity(x, y, z) match {
       case computer: tileentity.Case if id == GuiType.Case.id =>
         new gui.Case(player.inventory, computer)
+      case charger: tileentity.Charger if id == GuiType.Charger.id =>
+        new gui.Charger(player.inventory, charger)
       case disassembler: tileentity.Disassembler if id == GuiType.Disassembler.id =>
         new gui.Disassembler(player.inventory, disassembler)
       case drive: tileentity.DiskDrive if id == GuiType.DiskDrive.id =>

src/main/scala/li/cil/oc/client/gui/Case.scala

@@ -7,7 +7,6 @@ import li.cil.oc.client.{Textures, PacketSender => ClientPacketSender}
 import li.cil.oc.common.{container, tileentity}
 import net.minecraft.client.gui.GuiButton
 import net.minecraft.entity.player.InventoryPlayer
-import net.minecraft.util.StatCollector
 import org.lwjgl.opengl.GL11
 
 class Case(playerInventory: InventoryPlayer, val computer: tileentity.Case) extends DynamicGuiContainer(new container.Case(playerInventory, computer)) {
@@ -36,7 +35,7 @@ class Case(playerInventory: InventoryPlayer, val computer: tileentity.Case) exte
     super.drawGuiContainerForegroundLayer(mouseX, mouseY)
     GL11.glPushAttrib(GL11.GL_ALL_ATTRIB_BITS) // Me lazy... prevents NEI render glitch.
     fontRenderer.drawString(
-      StatCollector.translateToLocal(computer.getInvName),
+      Localization.localizeImmediately(computer.getInvName),
       8, 6, 0x404040)
     if (powerButton.func_82252_a) {
       val tooltip = new java.util.ArrayList[String]

src/main/scala/li/cil/oc/client/gui/Charger.scala

@@ -0,0 +1,14 @@
+package li.cil.oc.client.gui
+
+import li.cil.oc.Localization
+import li.cil.oc.common.{container, tileentity}
+import net.minecraft.entity.player.InventoryPlayer
+
+class Charger(playerInventory: InventoryPlayer, val charger: tileentity.Charger) extends DynamicGuiContainer(new container.Charger(playerInventory, charger)) {
+  override def drawGuiContainerForegroundLayer(mouseX: Int, mouseY: Int) = {
+    super.drawGuiContainerForegroundLayer(mouseX, mouseY)
+    fontRenderer.drawString(
+      Localization.localizeImmediately(charger.getInvName),
+      8, 6, 0x404040)
+  }
+}

src/main/scala/li/cil/oc/client/gui/Disassembler.scala

@@ -1,10 +1,10 @@
 package li.cil.oc.client.gui
 
+import li.cil.oc.Localization
 import li.cil.oc.client.Textures
 import li.cil.oc.client.gui.widget.ProgressBar
 import li.cil.oc.common.{container, tileentity}
 import net.minecraft.entity.player.InventoryPlayer
-import net.minecraft.util.StatCollector
 import org.lwjgl.opengl.GL11
 
 class Disassembler(playerInventory: InventoryPlayer, val disassembler: tileentity.Disassembler) extends DynamicGuiContainer(new container.Disassembler(playerInventory, disassembler)) {
@@ -14,7 +14,7 @@ class Disassembler(playerInventory: InventoryPlayer, val disassembler: tileentit
 
   override def drawGuiContainerForegroundLayer(mouseX: Int, mouseY: Int) = {
     fontRenderer.drawString(
-      StatCollector.translateToLocal(disassembler.getInvName),
+      Localization.localizeImmediately(disassembler.getInvName),
       8, 6, 0x404040)
   }
 

src/main/scala/li/cil/oc/client/gui/DiskDrive.scala

@@ -1,14 +1,14 @@
 package li.cil.oc.client.gui
 
+import li.cil.oc.Localization
 import li.cil.oc.common.{container, tileentity}
 import net.minecraft.entity.player.InventoryPlayer
-import net.minecraft.util.StatCollector
 
 class DiskDrive(playerInventory: InventoryPlayer, val drive: tileentity.DiskDrive) extends DynamicGuiContainer(new container.DiskDrive(playerInventory, drive)) {
   override def drawGuiContainerForegroundLayer(mouseX: Int, mouseY: Int) = {
     super.drawGuiContainerForegroundLayer(mouseX, mouseY)
     fontRenderer.drawString(
-      StatCollector.translateToLocal(drive.getInvName),
+      Localization.localizeImmediately(drive.getInvName),
       8, 6, 0x404040)
   }
 }

src/main/scala/li/cil/oc/client/gui/DynamicGuiContainer.scala

@@ -1,15 +1,14 @@
 package li.cil.oc.client.gui
 
 import li.cil.oc.client.Textures
-import li.cil.oc.common
 import li.cil.oc.common.container.{ComponentSlot, Player}
 import li.cil.oc.util.RenderState
 import li.cil.oc.util.mods.NEI
+import li.cil.oc.{Localization, common}
 import net.minecraft.client.renderer.Tessellator
 import net.minecraft.client.renderer.texture.TextureMap
 import net.minecraft.inventory.{Container, Slot}
 import net.minecraft.item.ItemStack
-import net.minecraft.util.StatCollector
 import org.lwjgl.opengl.GL11
 
 import scala.collection.convert.WrapAsScala._
@@ -21,7 +20,7 @@ abstract class DynamicGuiContainer(container: Container) extends CustomGuiContai
 
   override protected def drawGuiContainerForegroundLayer(mouseX: Int, mouseY: Int) {
     fontRenderer.drawString(
-      StatCollector.translateToLocal("container.inventory"),
+      Localization.localizeImmediately("container.inventory"),
       8, ySize - 96 + 2, 0x404040)
   }
 

src/main/scala/li/cil/oc/client/gui/Server.scala

@@ -1,11 +1,11 @@
 package li.cil.oc.client.gui
 
+import li.cil.oc.Localization
 import li.cil.oc.client.Textures
 import li.cil.oc.common.container
 import li.cil.oc.common.inventory.ServerInventory
 import net.minecraft.entity.player.InventoryPlayer
 import net.minecraft.inventory.Slot
-import net.minecraft.util.StatCollector
 import org.lwjgl.opengl.GL11
 
 class Server(playerInventory: InventoryPlayer, serverInventory: ServerInventory) extends DynamicGuiContainer(new container.Server(playerInventory, serverInventory)) {
@@ -13,7 +13,7 @@ class Server(playerInventory: InventoryPlayer, serverInventory: ServerInventory)
   override def drawGuiContainerForegroundLayer(mouseX: Int, mouseY: Int) = {
     super.drawGuiContainerForegroundLayer(mouseX, mouseY)
     fontRenderer.drawString(
-      StatCollector.translateToLocal(serverInventory.getInvName),
+      Localization.localizeImmediately(serverInventory.getInvName),
       8, 6, 0x404040)
   }
 

src/main/scala/li/cil/oc/client/gui/ServerRack.scala

@@ -8,7 +8,6 @@ import li.cil.oc.{Localization, Settings}
 import net.minecraft.client.gui.{GuiButton, GuiScreen}
 import net.minecraft.client.renderer.Tessellator
 import net.minecraft.entity.player.InventoryPlayer
-import net.minecraft.util.StatCollector
 import net.minecraftforge.common.ForgeDirection
 import org.lwjgl.opengl.GL11
 
@@ -96,7 +95,7 @@ class ServerRack(playerInventory: InventoryPlayer, val rack: tileentity.ServerRa
     GL11.glPushAttrib(GL11.GL_ALL_ATTRIB_BITS) // Prevents NEI render glitch.
 
     fontRenderer.drawString(
-      StatCollector.translateToLocal(rack.getInvName),
+      Localization.localizeImmediately(rack.getInvName),
       8, 6, 0x404040)
 
     val rangeY = 39

src/main/scala/li/cil/oc/client/gui/Switch.scala

@@ -5,7 +5,6 @@ import java.text.DecimalFormat
 import li.cil.oc.Localization
 import li.cil.oc.common.{container, tileentity}
 import net.minecraft.entity.player.InventoryPlayer
-import net.minecraft.util.StatCollector
 
 class Switch(playerInventory: InventoryPlayer, val switch: tileentity.Switch) extends DynamicGuiContainer(new container.Switch(playerInventory, switch)) {
   private val switchContainer = inventorySlots.asInstanceOf[container.Switch]
@@ -14,7 +13,7 @@ class Switch(playerInventory: InventoryPlayer, val switch: tileentity.Switch) ex
   override def drawGuiContainerForegroundLayer(mouseX: Int, mouseY: Int) = {
     super.drawGuiContainerForegroundLayer(mouseX, mouseY)
     fontRenderer.drawString(
-      StatCollector.translateToLocal(switch.getInvName),
+      Localization.localizeImmediately(switch.getInvName),
       8, 6, 0x404040)
 
     fontRenderer.drawString(

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

@@ -9,6 +9,8 @@ import net.minecraft.world.World
 abstract class GuiHandler extends IGuiHandler {
   override def getServerGuiElement(id: Int, player: EntityPlayer, world: World, x: Int, y: Int, z: Int) =
     world.getBlockTileEntity(x, y, z) match {
+      case charger: tileentity.Charger if id == GuiType.Charger.id =>
+        new container.Charger(player.inventory, charger)
       case computer: tileentity.Case if id == GuiType.Case.id =>
         new container.Case(player.inventory, computer)
       case disassembler: tileentity.Disassembler if id == GuiType.Disassembler.id =>

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

@@ -4,6 +4,7 @@ object GuiType extends Enumeration {
   val
 
   Case,
+  Charger,
   Disassembler,
   DiskDrive,
   Rack,

src/main/scala/li/cil/oc/common/block/Charger.scala

@@ -4,10 +4,10 @@ import java.util
 
 import cpw.mods.fml.common.Optional
 import li.cil.oc.client.Textures
-import li.cil.oc.common.tileentity
+import li.cil.oc.common.{GuiType, tileentity}
 import li.cil.oc.server.PacketSender
 import li.cil.oc.util.mods.{BuildCraft, Mods}
-import li.cil.oc.{Localization, Settings}
+import li.cil.oc.{Localization, OpenComputers, Settings}
 import mcp.mobius.waila.api.{IWailaConfigHandler, IWailaDataAccessor}
 import net.minecraft.entity.player.EntityPlayer
 import net.minecraft.item.ItemStack
@@ -45,14 +45,23 @@ class Charger(val parent: SimpleDelegator) extends RedstoneAware with SimpleDele
 
   override def rightClick(world: World, x: Int, y: Int, z: Int, player: EntityPlayer, side: ForgeDirection, hitX: Float, hitY: Float, hitZ: Float) =
     world.getBlockTileEntity(x, y, z) match {
-      case charger: tileentity.Charger if BuildCraft.holdsApplicableWrench(player, x, y, z) =>
+      case charger: tileentity.Charger =>
-        if (!world.isRemote) {
+        if (BuildCraft.holdsApplicableWrench(player, x, y, z)) {
-          charger.invertSignal = !charger.invertSignal
+          if (!world.isRemote) {
-          charger.chargeSpeed = 1.0 - charger.chargeSpeed
+            charger.invertSignal = !charger.invertSignal
-          PacketSender.sendChargerState(charger)
+            charger.chargeSpeed = 1.0 - charger.chargeSpeed
-          BuildCraft.wrenchUsed(player, x, y, z)
+            PacketSender.sendChargerState(charger)
+            BuildCraft.wrenchUsed(player, x, y, z)
+          }
+          true
         }
-        true
+        else if (!player.isSneaking) {
+          if (!world.isRemote) {
+            player.openGui(OpenComputers, GuiType.Charger.id, world, x, y, z)
+          }
+          true
+        }
+        else false
       case _ => super.rightClick(world, x, y, z, player, side, hitX, hitY, hitZ)
     }
 

src/main/scala/li/cil/oc/common/block/Delegator.scala

@@ -9,7 +9,7 @@ import li.cil.oc.client.KeyBindings
 import li.cil.oc.common.tileentity.traits.{BundledRedstoneAware, Colored, Rotatable}
 import li.cil.oc.util.mods.Mods
 import li.cil.oc.util.{Color, ItemCosts, SideTracker}
-import li.cil.oc.{CreativeTab, Settings}
+import li.cil.oc.{CreativeTab, Localization, Settings}
 import net.minecraft.block.Block
 import net.minecraft.block.material.Material
 import net.minecraft.client.renderer.texture.IconRegister
@@ -18,7 +18,7 @@ import net.minecraft.entity.player.EntityPlayer
 import net.minecraft.entity.{Entity, EntityLivingBase, EnumCreatureType}
 import net.minecraft.item.{ItemBlock, ItemStack}
 import net.minecraft.tileentity.TileEntity
-import net.minecraft.util.{AxisAlignedBB, MovingObjectPosition, StatCollector, Vec3}
+import net.minecraft.util.{AxisAlignedBB, MovingObjectPosition, Vec3}
 import net.minecraft.world.{IBlockAccess, World}
 import net.minecraftforge.common.ForgeDirection
 import org.lwjgl.input
@@ -366,7 +366,7 @@ class Delegator[Child <: Delegate](id: Int) extends Block(id, Material.iron) {
         ItemCosts.addTooltip(stack, tooltip.asInstanceOf[util.List[String]])
       }
       else {
-        tooltip.add(StatCollector.translateToLocalFormatted(
+        tooltip.add(Localization.localizeImmediately(
           Settings.namespace + "tooltip.MaterialCosts",
           input.Keyboard.getKeyName(KeyBindings.materialCosts.keyCode)))
       }

src/main/scala/li/cil/oc/common/container/Charger.scala

@@ -0,0 +1,9 @@
+package li.cil.oc.common.container
+
+import li.cil.oc.common.tileentity
+import net.minecraft.entity.player.InventoryPlayer
+
+class Charger(playerInventory: InventoryPlayer, charger: tileentity.Charger) extends Player(playerInventory, charger) {
+  addSlotToContainer(80, 35, "tablet")
+  addPlayerInventorySlots(8, 84)
+}

src/main/scala/li/cil/oc/common/item/Delegate.scala

@@ -5,11 +5,10 @@ import java.util
 import cpw.mods.fml.relauncher.{Side, SideOnly}
 import li.cil.oc.client.KeyBindings
 import li.cil.oc.util.{ItemCosts, Rarity, Tooltip}
-import li.cil.oc.{Settings, api}
+import li.cil.oc.{Localization, Settings, api}
 import net.minecraft.entity.Entity
 import net.minecraft.entity.player.EntityPlayer
 import net.minecraft.item.ItemStack
-import net.minecraft.util.StatCollector
 import net.minecraft.world.World
 import org.lwjgl.input
 
@@ -87,7 +86,7 @@ trait Delegate {
         ItemCosts.addTooltip(stack, tooltip.asInstanceOf[util.List[String]])
       }
       else {
-        tooltip.add(StatCollector.translateToLocalFormatted(
+        tooltip.add(Localization.localizeImmediately(
           Settings.namespace + "tooltip.MaterialCosts",
           input.Keyboard.getKeyName(KeyBindings.materialCosts.keyCode)))
       }

src/main/scala/li/cil/oc/common/item/Tablet.scala

@@ -122,11 +122,11 @@ class TabletWrapper(var stack: ItemStack, var holder: EntityPlayer) extends Comp
   def readFromNBT() {
     if (stack.hasTagCompound) {
       val data = stack.getTagCompound
+      load(data)
       if (!world.isRemote) {
         computer.load(data.getCompoundTag(Settings.namespace + "data"))
         tablet.load(data.getCompoundTag(Settings.namespace + "component"))
       }
-      load(data)
     }
   }
 
@@ -153,6 +153,8 @@ class TabletWrapper(var stack: ItemStack, var holder: EntityPlayer) extends Comp
   if (!world.isRemote) {
     api.Network.joinNewNetwork(computer.node)
     computer.stop()
+    val charge = math.max(0, this.data.energy - tablet.node.globalBuffer)
+    tablet.node.changeBuffer(charge)
     writeToNBT()
   }
 

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

@@ -2,13 +2,16 @@ package li.cil.oc.common.tileentity
 
 import cpw.mods.fml.relauncher.{Side, SideOnly}
 import li.cil.oc.api.network.{Analyzable, Node, Visibility}
+import li.cil.oc.common.item.Tablet
 import li.cil.oc.server.{PacketSender => ServerPacketSender}
+import li.cil.oc.util.ItemUtils
 import li.cil.oc.{Localization, Settings, api}
 import net.minecraft.entity.player.EntityPlayer
+import net.minecraft.item.ItemStack
 import net.minecraft.nbt.NBTTagCompound
 import net.minecraftforge.common.ForgeDirection
 
-class Charger extends traits.Environment with traits.PowerAcceptor with traits.RedstoneAware with traits.Rotatable with Analyzable {
+class Charger extends traits.Environment with traits.PowerAcceptor with traits.RedstoneAware with traits.Rotatable with traits.Inventory with Analyzable {
   val node = api.Network.newNode(this, Visibility.None).
     withConnector(Settings.get.bufferConverter).
     create()
@@ -39,8 +42,8 @@ class Charger extends traits.Environment with traits.PowerAcceptor with traits.R
 
   override def updateEntity() {
     super.updateEntity()
-    if (isServer) {
+    if (isServer && world.getWorldInfo.getWorldTotalTime % Settings.get.tickFrequency == 0) {
-      val charge = Settings.get.chargeRate * chargeSpeed
+      val charge = Settings.get.chargeRateRobot * chargeSpeed * Settings.get.tickFrequency
       val canCharge = charge > 0 && node.globalBuffer >= charge
       if (hasPower && !canCharge) {
         hasPower = false
@@ -53,8 +56,35 @@ class Charger extends traits.Environment with traits.PowerAcceptor with traits.R
       if (canCharge) robots.collect {
         case Some(proxy) => node.changeBuffer(proxy.robot.bot.node.changeBuffer(charge + node.changeBuffer(-charge)))
       }
+
+      // Charge tablet if present.
+      if (getStackInSlot(0) != null && chargeSpeed > 0) {
+        def tryCharge(energy: Double, maxEnergy: Double, handler: (Double) => Unit) {
+          if (energy < maxEnergy) {
+            val itemCharge = math.min(maxEnergy - energy, Settings.get.chargeRateTablet * chargeSpeed * Settings.get.tickFrequency)
+            node.tryChangeBuffer(-itemCharge)
+            handler(itemCharge)
+          }
+        }
+        val stack = getStackInSlot(0)
+        Option(Tablet.Server.cache.getIfPresent(Tablet.getId(stack))) match {
+          case Some(tablet) =>
+            tryCharge(tablet.tablet.node.globalBuffer, tablet.tablet.node.globalBufferSize, (amount) => {
+              tablet.tablet.node.changeBuffer(amount)
+              tablet.data.energy = tablet.tablet.node.globalBuffer
+              tablet.data.maxEnergy = tablet.tablet.node.globalBufferSize
+              tablet.writeToNBT()
+            })
+          case _ =>
+            val data = new ItemUtils.TabletData(getStackInSlot(0))
+            tryCharge(data.energy, data.maxEnergy, (amount) => {
+              data.energy = math.min(data.maxEnergy, data.energy + amount)
+              data.save(getStackInSlot(0))
+            })
+        }
+      }
     }
-    else if (chargeSpeed > 0 && hasPower && world.getWorldInfo.getWorldTotalTime % 10 == 0) {
+    else if (isClient && chargeSpeed > 0 && hasPower && world.getWorldInfo.getWorldTotalTime % 10 == 0) {
       ForgeDirection.VALID_DIRECTIONS.map(side => world.getBlockTileEntity(x + side.offsetX, y + side.offsetY, z + side.offsetZ)).collect {
         case proxy: RobotProxy if proxy.globalBuffer / proxy.globalBufferSize < 0.95 =>
           val theta = world.rand.nextDouble * Math.PI
@@ -105,6 +135,15 @@ class Charger extends traits.Environment with traits.PowerAcceptor with traits.R
 
   // ----------------------------------------------------------------------- //
 
+  override def getSizeInventory = 1
+
+  override def getInventoryStackLimit = 1
+
+  override def isItemValidForSlot(slot: Int, stack: ItemStack) =
+    slot == 0 && api.Items.get(stack) == api.Items.get("tablet")
+
+  // ----------------------------------------------------------------------- //
+
   override protected def updateRedstoneInput(side: ForgeDirection) {
     super.updateRedstoneInput(side)
     val signal = math.max(0, math.min(15, ForgeDirection.VALID_DIRECTIONS.map(input).max))

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

@@ -9,7 +9,7 @@ import li.cil.oc.common.item.TabletWrapper
 class Tablet(val tablet: TabletWrapper) extends component.ManagedComponent {
   val node = Network.newNode(this, Visibility.Network).
     withComponent("tablet").
-    withConnector(Settings.get.bufferRobot).
+    withConnector(Settings.get.bufferTablet).
     create()
 
   // ----------------------------------------------------------------------- //

src/main/scala/li/cil/oc/server/network/Connector.scala

@@ -50,10 +50,10 @@ trait Connector extends network.Connector with Node {
     }
     else 0
     if (localBuffer != oldBuffer) {
-      this.synchronized(distributor match {
+      distributor match {
         case Some(d) => d.globalBuffer = math.max(0, math.min(d.globalBufferSize, d.globalBuffer - oldBuffer + localBuffer))
         case _ =>
-      })
+      }
     }
     remaining
   }
@@ -69,11 +69,11 @@ trait Connector extends network.Connector with Node {
             localBuffer = localBufferSize
           }
           val newGlobalBuffer = globalBuffer + delta
-          newGlobalBuffer >= 0 && newGlobalBuffer <= globalBufferSize && d.changeBuffer(delta) == 0
+          (delta > 0 || newGlobalBuffer >= 0) && (delta < 0 || newGlobalBuffer <= globalBufferSize) && d.changeBuffer(delta) == 0
         }
         case _ =>
           val newLocalBuffer = localBuffer + delta
-          if (newLocalBuffer < 0 || newLocalBuffer > localBufferSize) {
+          if ((delta < 0 && newLocalBuffer < 0) || (delta > 0 && newLocalBuffer > localBufferSize)) {
             false
           }
           else {