Merge pull request #19 from Mazdallier/patch-2

Update fr_FR.lang

build.properties

@@ -1,5 +1,5 @@
-bdlib.version=1.8.0
+bdlib.version=1.9.2
 curseforge.id=70496
 
 minecraft.version=1.7.10
-forge.version=10.13.2.1291
+forge.version=10.13.4.1448-1.7.10

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.4-bin.zip

resources/assets/bdlib/lang/en_US.lang

@@ -9,6 +9,10 @@ bdlib.multiblock.disabled=Disabled
 bdlib.multiblock.incomplete=This machine is incomplete, it requires at least:
 bdlib.multiblock.notconnected=Not connected to a valid machine
 bdlib.multiblock.toomanyoutputs=Too many outputs connected, unable to attach new connection
+bdlib.multiblock.tip.module=Can be installed in:
+bdlib.multiblock.tip.controller=Possible modules:
+bdlib.multiblock.tip.module.range= * %s (%s - %s)
+bdlib.multiblock.tip.module.max= * %s (up to %s)
 
 bdlib.rsmode.always=Always ON
 bdlib.rsmode.never=Disabled

resources/assets/bdlib/lang/fr_FR.lang

@@ -8,7 +8,11 @@ bdlib.multiblock.face.down=Dessous
 bdlib.multiblock.disabled=Désactivé
 bdlib.multiblock.incomplete=Cette machine est incomplète, elle exige au moins :
 bdlib.multiblock.notconnected=Pas connecté à une machine valide
-bdlib.multiblock.toomanyoutputs=Trop de soties connectées, Incapable d'ajouter une nouvelle connexion
+bdlib.multiblock.toomanyoutputs=Trop de sorties connectées, impossible d'ajouter une nouvelle connexion
+bdlib.multiblock.tip.module=Peut être installé dans :
+bdlib.multiblock.tip.controller=Modules possibles:
+bdlib.multiblock.tip.module.range= * %s (%s - %s)
+bdlib.multiblock.tip.module.max= * %s (plus de %s)
 
 bdlib.rsmode.always=Toujours actif
 bdlib.rsmode.never=Désactivé

src/net/bdew/lib/ApiReporter.scala

@@ -10,6 +10,7 @@
 package net.bdew.lib
 
 import java.util
+import java.util.Locale
 
 import cpw.mods.fml.common.{ICrashCallable, ModAPIManager, ModContainer}
 
@@ -20,7 +21,7 @@ object ApiReporter extends ICrashCallable {
     val mods = new util.ArrayList[ModContainer]
     val nameLookup = new util.HashMap[String, ModContainer]
     ModAPIManager.INSTANCE.injectAPIModContainers(mods, nameLookup)
-    (for (mod <- mods.sortBy(_.getModId.toLowerCase)) yield
+    (for (mod <- mods.sortBy(_.getModId.toLowerCase(Locale.US))) yield
       "\t\t* %s (%s) from %s".format(mod.getModId, mod.getVersion,
         if (mod.getSource.isDirectory)
           mod.getSource

src/net/bdew/lib/BdLib.scala

@@ -13,6 +13,7 @@ import cpw.mods.fml.common.Mod.EventHandler
 import cpw.mods.fml.common.event.{FMLPreInitializationEvent, FMLServerStartingEvent, FMLServerStoppingEvent}
 import cpw.mods.fml.common.{FMLCommonHandler, Mod}
 import net.bdew.lib.multiblock.network.NetHandler
+import net.bdew.lib.tooltip.TooltipHandler
 import net.minecraft.command.CommandHandler
 import org.apache.logging.log4j.Logger
 
@@ -37,6 +38,9 @@ object BdLib {
     log.debug("List of loaded APIs: " + ApiReporter.APIs)
     FMLCommonHandler.instance().registerCrashCallable(ApiReporter)
     NetHandler.init()
+    if (ev.getSide.isClient) {
+      TooltipHandler.init()
+    }
   }
 
   @EventHandler

src/net/bdew/lib/CommandOreDistribution.scala

@@ -90,7 +90,7 @@ object CommandOreDistribution extends CommandBase {
       }
     }
 
-    val total = distribution.map(_._2).sum
+    val total = distribution.values.sum
     val warnings = kinds.filter(_._2.size > 1)
 
     if (toFile) {
@@ -104,7 +104,7 @@ object CommandOreDistribution extends CommandBase {
         ))
         dumpWriter.newLine()
         dumpWriter.newLine()
-        if (warnings.size > 0) {
+        if (warnings.nonEmpty) {
           for ((id, types) <- warnings.toList.sortBy(_._1)) {
             dumpWriter.write("Warning: %s has multiple variants generated:".format(id))
             dumpWriter.newLine()

src/net/bdew/lib/Event.scala

@@ -12,7 +12,7 @@ package net.bdew.lib
 class EventBase[T] extends {
   var listeners = Seq.empty[T]
   def listen(x: T) = listeners :+= x
-  def hasListeners = listeners.size > 0
+  def hasListeners = listeners.nonEmpty
 }
 
 class Event0 extends EventBase[() => Unit] {

src/net/bdew/lib/Misc.scala

@@ -10,6 +10,7 @@
 package net.bdew.lib
 
 import java.util
+import java.util.Locale
 
 import cpw.mods.fml.common.registry.GameRegistry
 import cpw.mods.fml.common.versioning.VersionParser
@@ -24,7 +25,7 @@ import net.minecraftforge.fluids.{Fluid, FluidStack}
 import net.minecraftforge.oredict.ShapedOreRecipe
 
 object Misc {
-  def getActiveModId = Loader.instance().activeModContainer().getModId
+  def getActiveModId = Option(Loader.instance().activeModContainer().getModId) getOrElse "<UNKNOWN>"
 
   def toLocal(s: String) = StatCollector.translateToLocal(s)
   def toLocalF(s: String, params: Any*) = StatCollector.translateToLocal(s).format(params: _*)
@@ -140,5 +141,35 @@ object Misc {
     if (f != null) getFluidColor(new FluidStack(f, 1)) else 0xFFFFFF
 
   lazy val lineSeparator = System.getProperty("line.separator")
+
+  /**
+   * Provides something like java try-with-resources in scala
+   */
+  def withAutoClose[T <: AutoCloseable, R](o: T)(f: T => R): R = {
+    val res = try {
+      f(o)
+    } catch {
+      case t1: Throwable =>
+        if (o != null) {
+          try {
+            o.close()
+          } catch {
+            case t2: Throwable =>
+              t1.addSuppressed(t2)
+          }
+        }
+        throw t1
+    }
+    if (o != null)
+      o.close()
+    res
+  }
+
+  def iconName(domain: String, name: String, path: String*) =
+    if (path.isEmpty)
+      "%s:%s".format(domain, name).toLowerCase(Locale.US)
+    else
+      "%s:%s/%s".format(domain, name, path.mkString("/")).toLowerCase(Locale.US)
+
 }
 

src/net/bdew/lib/async/ServerTickExecutionContext.scala

@@ -40,8 +40,7 @@ object ServerTickExecutionContext extends ExecutionContext {
   override def reportFailure(cause: Throwable): Unit =
     BdLib.logErrorException("Error in execution context", cause)
 
-  @SubscribeEvent
-  def onTick(ev: ServerTickEvent): Unit = {
+  def doSingleLoop(): Unit = {
     for (r <- getNextBatch) {
       try {
         r.run()
@@ -50,4 +49,7 @@ object ServerTickExecutionContext extends ExecutionContext {
       }
     }
   }
+
+  @SubscribeEvent
+  def onTick(ev: ServerTickEvent): Unit = doSingleLoop()
 }

src/net/bdew/lib/block/HasItemBlock.scala

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) bdew, 2013 - 2015
+ * https://github.com/bdew/bdlib
+ *
+ * This mod is distributed under the terms of the Minecraft Mod Public
+ * License 1.0, or MMPL. Please check the contents of the license located in
+ * http://bdew.net/minecraft-mod-public-license/
+ */
+
+package net.bdew.lib.block
+
+import net.minecraft.block.Block
+import net.minecraft.item.ItemBlock
+
+/**
+ * If defined on a block - defines a custom ItemBlock class that will be used when registering
+ * Supported by BlockManager and Machine
+ */
+trait HasItemBlock extends Block {
+  def ItemBlockClass: Class[_ <: ItemBlock]
+}

src/net/bdew/lib/block/ItemBlockTooltip.scala

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) bdew, 2013 - 2015
+ * https://github.com/bdew/bdlib
+ *
+ * This mod is distributed under the terms of the Minecraft Mod Public
+ * License 1.0, or MMPL. Please check the contents of the license located in
+ * http://bdew.net/minecraft-mod-public-license/
+ */
+
+package net.bdew.lib.block
+
+import java.util
+
+import net.minecraft.block.Block
+import net.minecraft.entity.player.EntityPlayer
+import net.minecraft.item.{ItemBlock, ItemStack}
+
+trait BlockTooltip extends Block with HasItemBlock {
+  override val ItemBlockClass: Class[_ <: ItemBlock] = classOf[ItemBlockTooltip]
+  def getTooltip(stack: ItemStack, player: EntityPlayer, advanced: Boolean): List[String]
+}
+
+class ItemBlockTooltip(b: Block) extends ItemBlock(b) {
+  override def addInformation(stack: ItemStack, player: EntityPlayer, list: util.List[_], advanced: Boolean): Unit = {
+    import scala.collection.JavaConversions._
+    if (b.isInstanceOf[BlockTooltip])
+      list.asInstanceOf[util.List[String]].addAll(b.asInstanceOf[BlockTooltip].getTooltip(stack, player, advanced))
+  }
+}

src/net/bdew/lib/block/KeepData.scala

@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) bdew, 2013 - 2015
+ * https://github.com/bdew/bdlib
+ *
+ * This mod is distributed under the terms of the Minecraft Mod Public
+ * License 1.0, or MMPL. Please check the contents of the license located in
+ * http://bdew.net/minecraft-mod-public-license/
+ */
+
+package net.bdew.lib.block
+
+import java.util
+
+import net.bdew.lib.nbt.NBT
+import net.bdew.lib.tile.TileExtended
+import net.minecraft.block.Block
+import net.minecraft.entity.player.EntityPlayer
+import net.minecraft.item.ItemStack
+import net.minecraft.nbt.NBTTagCompound
+import net.minecraft.util.MovingObjectPosition
+import net.minecraft.world.World
+
+/**
+ * Mixin for blocks to keep their data when broken
+ * Must have a TileEntity that extends TileKeepData
+ */
+trait BlockKeepData extends Block with HasItemBlock {
+  this: HasTE[_ <: TileKeepData] =>
+
+  override val ItemBlockClass: Class[_ <: ItemBlockKeepData] = classOf[ItemBlockKeepData]
+
+  def getSavedBlock(world: World, x: Int, y: Int, z: Int, metadata: Int) = {
+    val stack = new ItemStack(getItemDropped(metadata, world.rand, 0), 1, damageDropped(metadata))
+    getTE(world, x, y, z).saveToItem(stack)
+    stack
+  }
+
+  override def getDrops(world: World, x: Int, y: Int, z: Int, metadata: Int, fortune: Int): util.ArrayList[ItemStack] = {
+    val drops = new util.ArrayList[ItemStack]()
+    drops.add(getSavedBlock(world, x, y, z, metadata))
+    drops
+  }
+
+  override def removedByPlayer(world: World, player: EntityPlayer, x: Int, y: Int, z: Int, willHarvest: Boolean): Boolean =
+    if (willHarvest)
+      true
+    else
+      super.removedByPlayer(world, player, x, y, z, willHarvest)
+
+  override def harvestBlock(world: World, player: EntityPlayer, x: Int, y: Int, z: Int, meta: Int): Unit = {
+    super.harvestBlock(world, player, x, y, z, meta)
+    world.setBlockToAir(x, y, z)
+  }
+
+  override def getPickBlock(target: MovingObjectPosition, world: World, x: Int, y: Int, z: Int, player: EntityPlayer): ItemStack = {
+    getSavedBlock(world, x, y, z, world.getBlockMetadata(x, y, z))
+  }
+
+  /**
+   * Override for special actions on placing
+   * ItemStack might or might not contain actual data
+   * Called with the TE created and added to world, after onBlockPlacedBy & co
+   */
+  def restoreTileEntity(world: World, x: Int, y: Int, z: Int, is: ItemStack, player: EntityPlayer) = getTE(world, x, y, z).loadFromItem(is)
+}
+
+/**
+ * Mixin for tile entities to keep their data when broken
+ * Block class has to extend BlockKeepData
+ */
+trait TileKeepData extends TileExtended {
+  /**
+   * Override to modify data that will be stored in an item
+   * @param t Automatically serialized data
+   * @return Modified serialized data
+   */
+  def afterTileBreakSave(t: NBTTagCompound) = t
+
+  /**
+   * Override to modify data that will be load from an item
+   * After the tile entity is fully constructed and added to world
+   * @param t Automatically serialized data
+   * @return Modified serialized data
+   */
+  def beforeTileBreakLoad(t: NBTTagCompound) = t
+
+  final def saveToItem(is: ItemStack): Unit = {
+    if (!is.hasTagCompound) is.setTagCompound(new NBTTagCompound)
+    is.getTagCompound.setTag("data", afterTileBreakSave(NBT.from(persistSave.trigger)))
+  }
+
+  final def loadFromItem(is: ItemStack): Unit = {
+    if (is.hasTagCompound && is.getTagCompound.hasKey("data")) {
+      persistLoad.trigger(beforeTileBreakLoad(is.getTagCompound.getCompoundTag("data")))
+    }
+  }
+}
+
+/**
+ * Custom ItemBlock that handles loading data to the Tile Entity
+ */
+class ItemBlockKeepData(b: Block) extends ItemBlockTooltip(b) {
+  override def placeBlockAt(stack: ItemStack, player: EntityPlayer, world: World, x: Int, y: Int, z: Int, side: Int, hitX: Float, hitY: Float, hitZ: Float, metadata: Int): Boolean = {
+    if (super.placeBlockAt(stack, player, world, x, y, z, side, hitX, hitY, hitZ, metadata)) {
+      if (!world.isRemote && b.isInstanceOf[BlockKeepData])
+        b.asInstanceOf[BlockKeepData].restoreTileEntity(world, x, y, z, stack, player)
+      true
+    } else false
+  }
+}

src/net/bdew/lib/block/SimpleBlock.scala

@@ -15,6 +15,8 @@ import net.minecraft.block.Block
 import net.minecraft.block.material.Material
 import net.minecraft.client.renderer.texture.IIconRegister
 
+import scala.language.implicitConversions
+
 trait NamedBlock extends Block {
   def name: String
 }
@@ -25,6 +27,6 @@ class SimpleBlock(val name: String, material: Material) extends Block(material)
 
   @SideOnly(Side.CLIENT)
   override def registerBlockIcons(reg: IIconRegister) {
-    blockIcon = reg.registerIcon(modId + ":" + name.toLowerCase)
+    blockIcon = reg.registerIcon(Misc.iconName(modId, name))
   }
 }

src/net/bdew/lib/config/BlockManager.scala

@@ -9,19 +9,27 @@
 
 package net.bdew.lib.config
 
+import cpw.mods.fml.common.ObfuscationReflectionHelper
 import cpw.mods.fml.common.registry.GameRegistry
 import net.bdew.lib.Misc
-import net.bdew.lib.block.{HasTE, NamedBlock}
+import net.bdew.lib.block.{HasItemBlock, HasTE, NamedBlock}
 import net.minecraft.block.Block
 import net.minecraft.creativetab.CreativeTabs
-import net.minecraft.item.{ItemBlock, Item, ItemStack}
+import net.minecraft.item.{ItemBlock, ItemStack}
+import net.minecraft.tileentity.TileEntity
 
 class BlockManager(creativeTab: CreativeTabs) {
   def regBlock[T <: NamedBlock](block: T): T = regBlock(block, block.name)
 
-  def regBlock[T <: NamedBlock](block: T, itemClass: Class[_ <: ItemBlock]): T = regBlock(block, block.name, itemClass)
+  def regSpecial[T <: NamedBlock](block: T, addStack: Boolean = false, skipTileEntityReg: Boolean = false): T =
+    regBlock(block, block.name, addStack, skipTileEntityReg)
+
+  def regBlock[T <: Block](block: T, name: String, addStack: Boolean = false, skipTileEntityReg: Boolean = false): T = {
+    val itemClass: Class[_ <: ItemBlock] = if (block.isInstanceOf[HasItemBlock])
+      block.asInstanceOf[HasItemBlock].ItemBlockClass
+    else
+      classOf[ItemBlock]
 
-  def regBlock[T <: Block](block: T, name: String, itemClass: Class[_ <: ItemBlock] = classOf[ItemBlock], addStack: Boolean = false): T = {
     GameRegistry.registerBlock(block, itemClass, name)
 
     block.setCreativeTab(creativeTab)
@@ -29,12 +37,21 @@ class BlockManager(creativeTab: CreativeTabs) {
     if (addStack)
       GameRegistry.registerCustomItemStack(name, new ItemStack(block))
 
-    if (block.isInstanceOf[HasTE[_]])
+    if (block.isInstanceOf[HasTE[_]] && !skipTileEntityReg)
       GameRegistry.registerTileEntity(block.asInstanceOf[HasTE[_]].TEClass,
         "%s.%s".format(Misc.getActiveModId, name))
 
     return block
   }
 
+  /**
+   * Registers a legacy TE name->class mapping. Stolen from GameRegistry.registerTileEntityWithAlternatives
+   */
+  def registerLegacyTileEntity(name: String, cls: Class[_ <: TileEntity]): Unit = {
+    val teMappings: java.util.Map[String, Class[_]] = ObfuscationReflectionHelper.getPrivateValue(classOf[TileEntity], null, "field_" + "145855_i", "nameToClassMap")
+    if (!teMappings.containsKey(name))
+      teMappings.put(name, cls)
+  }
+
   def load() {}
 }

src/net/bdew/lib/config/MachineManager.scala

@@ -9,8 +9,11 @@
 
 package net.bdew.lib.config
 
+import net.bdew.lib.Misc
 import net.bdew.lib.gui.{GuiHandler, GuiProvider}
 import net.bdew.lib.machine.Machine
+import net.bdew.lib.multiblock.MachineCore
+import net.bdew.lib.multiblock.block.BlockModule
 import net.bdew.lib.recipes.gencfg.ConfigSection
 import net.minecraft.creativetab.CreativeTabs
 
@@ -25,5 +28,27 @@ class MachineManager(val tuning: ConfigSection, guiHandler: GuiHandler, creative
     }
     return machine
   }
+
   def load() {}
 }
+
+trait MachineManagerMultiblock extends MachineManager {
+  var controllers = Set.empty[MachineCore]
+
+  override def registerMachine[R <: Machine[_]](machine: R): R = {
+    super.registerMachine(machine)
+    if (machine.enabled) {
+      Misc.asInstanceOpt(machine, classOf[MachineCore]) foreach { controllerMachine =>
+        controllers += controllerMachine
+        controllerMachine.getController.machine = controllerMachine
+      }
+    }
+    machine
+  }
+
+  def getMachinesForBlock(b: BlockModule[_]): Map[MachineCore, (Int, Int)] = {
+    (for (machine <- controllers; max <- machine.modules.get(b.kind)) yield {
+      machine ->(machine.required.getOrElse(b.kind, 0), max)
+    }).toMap
+  }
+}

src/net/bdew/lib/covers/BlockCoverable.scala

@@ -11,10 +11,11 @@ package net.bdew.lib.covers
 
 import cpw.mods.fml.relauncher.{Side, SideOnly}
 import net.bdew.lib.Misc
-import net.bdew.lib.block.HasTE
+import net.bdew.lib.block.{BlockRef, HasTE}
 import net.bdew.lib.items.ItemUtils
 import net.minecraft.block.Block
-import net.minecraft.entity.player.EntityPlayer
+import net.minecraft.entity.player.{EntityPlayer, EntityPlayerMP}
+import net.minecraft.item.ItemStack
 import net.minecraft.util.IIcon
 import net.minecraft.world.{IBlockAccess, World}
 import net.minecraftforge.common.util.ForgeDirection
@@ -23,53 +24,101 @@ trait BlockCoverable[T <: TileCoverable] extends HasTE[T] {
   @SideOnly(Side.CLIENT)
   override def getRenderType = CoverRenderer.id
 
+  private def getCoverItem(w: IBlockAccess, x: Int, y: Int, z: Int, side: ForgeDirection): Option[(ItemCover, ItemStack, TileCoverable)] = {
+    val te = getTE(w, x, y, z)
+    for {
+      coverStack <- Option(te.covers(side).value)
+      coverItemMaybe <- Option(coverStack.getItem)
+      coverItem <- Misc.asInstanceOpt(coverItemMaybe, classOf[ItemCover])
+    } yield (coverItem, coverStack, te)
+  }
+
   override def onBlockActivated(world: World, x: Int, y: Int, z: Int, player: EntityPlayer, face: Int, xOffs: Float, yOffs: Float, zOffs: Float): Boolean = {
     val te = getTE(world, x, y, z)
     val side = Misc.forgeDirection(face)
 
+    // Shift+RightClick with empty hand should remove cover
     if (player.getCurrentEquippedItem == null && player.isSneaking) {
-      for (cover <- Option(te.covers(side).value)) {
+      for {
+        cover <- Option(te.covers(side).value)
+        coverItem <- Misc.asInstanceOpt(cover.getItem, classOf[ItemCover])
+      } {
         if (!world.isRemote) {
           te.covers(side) := null
           te.onCoversChanged()
-          ItemUtils.dropItemToPlayer(world, player, cover)
+          coverChanged(world, x, y, z, side)
+          ItemUtils.dropItemToPlayer(world, player, coverItem.onRemove(cover))
         }
         return true
       }
     }
 
+    // If held item is cover - try to install it
     for {
       activeStack <- Option(player.getCurrentEquippedItem)
       activeItem <- Option(activeStack.getItem)
       coverItem <- Misc.asInstanceOpt(activeItem, classOf[ItemCover])
       if te.isValidCover(side, activeStack) && coverItem.isValidTile(te, activeStack)
     } {
-      if (!world.isRemote) {
-        for (cover <- Option(te.covers(side).value))
-          ItemUtils.throwItemAt(world, te.xCoord + side.offsetX, te.yCoord + side.offsetY, te.zCoord + side.offsetZ, cover.copy())
+      if (!world.isRemote && player.isInstanceOf[EntityPlayerMP]) {
+        for {
+          oldCover <- Option(te.covers(side).value)
+          oldItem <- Misc.asInstanceOpt(oldCover.getItem, classOf[ItemCover])
+        } {
+          ItemUtils.throwItemAt(world, te.xCoord + side.offsetX, te.yCoord + side.offsetY, te.zCoord + side.offsetZ, oldItem.onRemove(oldCover))
+        }
 
-        te.covers(side) := activeStack.splitStack(1)
+        te.covers(side) := coverItem.onInstall(te, side, activeStack.splitStack(1), player.asInstanceOf[EntityPlayerMP])
+
+        if (activeStack.stackSize <= 0)
+          player.inventory.setInventorySlotContents(player.inventory.currentItem, null)
 
-        if (activeStack.stackSize <= 0) player.inventory.setInventorySlotContents(player.inventory.currentItem, null)
         te.onCoversChanged()
+        coverChanged(world, x, y, z, side)
       }
       return true
     }
 
+    // If has cover - let it handle the click
+    for ((item, stack, te) <- getCoverItem(world, x, y, z, side)) {
+      if (item.clickCover(te, side, stack, player)) return true
+    }
+
     super.onBlockActivated(world, x, y, z, player, face, xOffs, yOffs, zOffs)
   }
 
+  override def canProvidePower = true
+
+  override def isProvidingWeakPower(w: IBlockAccess, x: Int, y: Int, z: Int, side: Int): Int = {
+    val direction = Misc.forgeDirection(side).getOpposite
+    for ((item, stack, te) <- getCoverItem(w, x, y, z, direction)) {
+      if (item.isEmittingSignal(te, direction, stack)) return 15
+    }
+    0
+  }
+
+  def coverChanged(w: World, x: Int, y: Int, z: Int, side: ForgeDirection): Unit = {
+    val pos = BlockRef(x, y, z).neighbour(side)
+    w.notifyBlockOfNeighborChange(pos.x, pos.y, pos.z, pos.block(w).orNull)
+  }
+
   def getCoverIcon(w: IBlockAccess, x: Int, y: Int, z: Int, side: ForgeDirection): Option[IIcon] =
-    for {
-      coverStack <- Option(getTE(w, x, y, z).covers(side).value)
-      coverItemMaybe <- Option(coverStack.getItem)
-      coverItem <- Misc.asInstanceOpt(coverItemMaybe, classOf[ItemCover])
-    } yield coverItem.getCoverIcon(coverStack)
+    for ((item, stack, te) <- getCoverItem(w, x, y, z, side))
+      yield item.getCoverIcon(te, side, stack)
 
   override def breakBlock(world: World, x: Int, y: Int, z: Int, block: Block, meta: Int) {
-    if (!world.isRemote)
-      for ((dir, covOpt) <- getTE(world, x, y, z).covers; cover <- Option(covOpt.value))
-        ItemUtils.throwItemAt(world, x, y, z, cover)
+    if (!world.isRemote) {
+      val te = getTE(world, x, y, z)
+      for {
+        (dir, covOpt) <- te.covers
+        cover <- Option(covOpt.value)
+        item <- Misc.asInstanceOpt(cover.getItem, classOf[ItemCover])
+      } {
+        te.covers(dir) := null
+        ItemUtils.throwItemAt(world, x, y, z, item.onRemove(cover))
+        coverChanged(world, x, y, z, dir)
+      }
+    }
     super.breakBlock(world, x, y, z, block, meta)
   }
 }

src/net/bdew/lib/covers/CoverRenderer.scala

@@ -23,12 +23,13 @@ object CoverRenderer extends BaseBlockRenderHandler {
 
   override def renderWorldBlock(world: IBlockAccess, x: Int, y: Int, z: Int, block: Block, modelId: Int, renderer: RenderBlocks) = {
     renderer.renderStandardBlock(block, x, y, z)
-    for {
-      blockCov <- Misc.asInstanceOpt(block, classOf[BlockCoverable[_]])
-      face <- ForgeDirection.VALID_DIRECTIONS
-      icon <- blockCov.getCoverIcon(world, x, y, z, face)
-      if block.shouldSideBeRendered(world, x + face.offsetX, y + face.offsetY, z + face.offsetZ, face.ordinal())
-    } ConnectedHelper.draw(face, 8).doDraw(ConnectedHelper.Vec3F(x, y, z), icon)
+    if (!renderer.hasOverrideBlockTexture)
+      for {
+        blockCov <- Misc.asInstanceOpt(block, classOf[BlockCoverable[_]])
+        face <- ForgeDirection.VALID_DIRECTIONS
+        icon <- blockCov.getCoverIcon(world, x, y, z, face)
+        if block.shouldSideBeRendered(world, x + face.offsetX, y + face.offsetY, z + face.offsetZ, face.ordinal())
+      } ConnectedHelper.draw(face, 8).doDraw(ConnectedHelper.Vec3F(x, y, z), icon)
     true
   }
 }

src/net/bdew/lib/covers/ItemCover.scala

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) bdew, 2013 - 2014
+ * Copyright (c) bdew, 2013 - 2015
  * https://github.com/bdew/bdlib
  *
  * This mod is distributed under the terms of the Minecraft Mod Public
@@ -9,23 +9,74 @@
 
 package net.bdew.lib.covers
 
+import net.minecraft.entity.player.{EntityPlayer, EntityPlayerMP}
 import net.minecraft.item.{Item, ItemStack}
 import net.minecraft.util.IIcon
 import net.minecraftforge.common.util.ForgeDirection
 
 trait ItemCover extends Item {
   /**
+   * @return true if tickCover should be called
+   */
+  def isCoverTicking: Boolean
+
+  /**
+   * @param te Host TileEntity
+   * @param side Side the cover is installed on
+   * @param cover Cover ItemStack
    * @return Icon to render, MUST be on terrain sprite sheet (0), not item!
    */
-  def getCoverIcon(stack: ItemStack): IIcon
+  def getCoverIcon(te: TileCoverable, side: ForgeDirection, cover: ItemStack): IIcon
 
   /**
    * Perform tick, called on server only
+   * @param te Host TileEntity
+   * @param side Side the cover is installed on
+   * @param cover Cover ItemStack
    */
-  def tickCover(te: TileCoverable, side: ForgeDirection, cover: ItemStack)
+  def tickCover(te: TileCoverable, side: ForgeDirection, cover: ItemStack): Unit = {}
 
   /**
    * Checks if this cover can be installed on a specific TE
+   * @param te Potential host TileEntity
+   * @param cover Cover ItemStack
+   * @return true if can be installed
    */
   def isValidTile(te: TileCoverable, cover: ItemStack): Boolean
+
+  /**
+   * Handle click on covered side - called on both client and server
+   * @param te Host TileEntity
+   * @param side Side the cover is installed on
+   * @param cover Cover ItemStack
+   * @param player Player clicking the cover
+   * @return true if click was handled by cover
+   */
+  def clickCover(te: TileCoverable, side: ForgeDirection, cover: ItemStack, player: EntityPlayer): Boolean = false
+
+  /**
+   * Check if cover is emitting RS signal
+   * @param te Host TileEntity
+   * @param side Side the cover is installed on
+   * @param cover Cover ItemStack
+   * @return true if cover is emitting RS signal
+   */
+  def isEmittingSignal(te: TileCoverable, side: ForgeDirection, cover: ItemStack): Boolean = false
+
+  /**
+   * Called when cover is installed on a block - called only on server
+   * @param te Host TileEntity
+   * @param side Side the cover is installed on
+   * @param cover Cover ItemStack - do not modify!
+   * @param player Player entity doing the installation
+   * @return cover ItemStack - copy if modified
+   */
+  def onInstall(te:TileCoverable, side: ForgeDirection, cover: ItemStack, player: EntityPlayerMP): ItemStack = cover
+
+  /**
+   * Called when cover is removed from block or block is destroyed - called only on server
+   * @param cover Cover ItemStack - do not modify!
+   * @return cover ItemStack - copy if modified
+   */
+  def onRemove(cover: ItemStack): ItemStack = cover
 }

src/net/bdew/lib/covers/TileCoverable.scala

@@ -9,6 +9,8 @@
 
 package net.bdew.lib.covers
 
+import java.util.Locale
+
 import net.bdew.lib.Misc
 import net.bdew.lib.data.DataSlotItemStack
 import net.bdew.lib.data.base.{TileDataSlots, UpdateKind}
@@ -17,7 +19,7 @@ import net.minecraftforge.common.util.ForgeDirection
 
 trait TileCoverable extends TileDataSlots {
   val covers = (ForgeDirection.VALID_DIRECTIONS map { x =>
-    x -> DataSlotItemStack("cover_" + x.toString.toLowerCase, this).setUpdate(UpdateKind.SAVE, UpdateKind.WORLD, UpdateKind.RENDER)
+    x -> DataSlotItemStack("cover_" + x.toString.toLowerCase(Locale.US), this).setUpdate(UpdateKind.SAVE, UpdateKind.WORLD, UpdateKind.RENDER)
   }).toMap
 
   /**

src/net/bdew/lib/data/DataSlotFluidOption.scala

@@ -17,7 +17,7 @@ case class DataSlotFluidOption(name: String, parent: DataSlotContainer) extends
   setUpdate(UpdateKind.SAVE, UpdateKind.GUI)
 
   override def save(t: NBTTagCompound, kind: UpdateKind.Value) {
-    value map { x => t.setString(name, x.getName) }
+    value foreach { x => t.setString(name, x.getName) }
   }
 
   override def load(t: NBTTagCompound, kind: UpdateKind.Value): Unit = {

src/net/bdew/lib/data/DataSlotGameProfile.scala

@@ -29,8 +29,8 @@ case class DataSlotGameProfile(name: String, parent: DataSlotContainer) extends
 
   override def save(t: NBTTagCompound, kind: UpdateKind.Value) = {
     if (value != null) {
-      Option(value.getId) map (id => t.setString(name + "_uid", id.toString))
-      Option(value.getName) filterNot (name => StringUtils.isBlank(name)) map (name => t.setString(name + "_name", name))
+      Option(value.getId) foreach (id => t.setString(name + "_uid", id.toString))
+      Option(value.getName) filterNot (name => StringUtils.isBlank(name)) foreach (name => t.setString(name + "_name", name))
     }
   }
 }

src/net/bdew/lib/data/base/TileDataSlots.scala

@@ -32,7 +32,7 @@ trait TileDataSlots extends TileExtended with DataSlotContainer {
     if (getWorldObj != null) {
       if (slot.updateKind.contains(UpdateKind.GUI))
         lastChange = getWorldObj.getTotalWorldTime
-      if (slot.updateKind.contains(UpdateKind.WORLD))
+      if (!getWorldObj.isRemote && slot.updateKind.contains(UpdateKind.WORLD))
         getWorldObj.markBlockForUpdate(xCoord, yCoord, zCoord)
       if (slot.updateKind.contains(UpdateKind.SAVE))
         getWorldObj.markTileEntityChunkModified(xCoord, yCoord, zCoord, this)

src/net/bdew/lib/gui/BaseScreen.scala

@@ -56,7 +56,7 @@ abstract class BaseScreen(cont: Container, xSz: Int, ySz: Int) extends GuiContai
 
     import scala.collection.JavaConversions._
 
-    if (tip.size > 0)
+    if (tip.nonEmpty)
       drawHoveringText(tip, x, y, getFontRenderer)
   }
 

src/net/bdew/lib/helpers/ChatHelper.scala

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) bdew, 2013 - 2015
+ * https://github.com/bdew/bdlib
+ *
+ * This mod is distributed under the terms of the Minecraft Mod Public
+ * License 1.0, or MMPL. Please check the contents of the license located in
+ * http://bdew.net/minecraft-mod-public-license/
+ */
+
+package net.bdew.lib.helpers
+
+import net.minecraft.util._
+
+import scala.language.implicitConversions
+
+class RichChatComponent(v: IChatComponent) {
+  def &(that: IChatComponent) = v.appendSibling(that)
+
+  private def applyStyle(f: ChatStyle => Unit) = {
+    f(v.getChatStyle)
+    v
+  }
+
+  def setColor(c: EnumChatFormatting) = applyStyle(_.setColor(c))
+  def setBold(b: Boolean) = applyStyle(_.setBold(b))
+  def setItalic(b: Boolean) = applyStyle(_.setItalic(b))
+  def setObfuscated(b: Boolean) = applyStyle(_.setObfuscated(b))
+  def setStrikethrough(b: Boolean) = applyStyle(_.setStrikethrough(b))
+  def setUnderlined(b: Boolean) = applyStyle(_.setUnderlined(b))
+
+}
+
+object ChatHelper {
+
+  object Color {
+    val BLACK = EnumChatFormatting.BLACK
+    val DARK_BLUE = EnumChatFormatting.DARK_BLUE
+    val DARK_GREEN = EnumChatFormatting.DARK_GREEN
+    val DARK_AQUA = EnumChatFormatting.DARK_AQUA
+    val DARK_RED = EnumChatFormatting.DARK_RED
+    val DARK_PURPLE = EnumChatFormatting.DARK_PURPLE
+    val GOLD = EnumChatFormatting.GOLD
+    val GRAY = EnumChatFormatting.GRAY
+    val DARK_GRAY = EnumChatFormatting.DARK_GRAY
+    val BLUE = EnumChatFormatting.BLUE
+    val GREEN = EnumChatFormatting.GREEN
+    val AQUA = EnumChatFormatting.AQUA
+    val RED = EnumChatFormatting.RED
+    val LIGHT_PURPLE = EnumChatFormatting.LIGHT_PURPLE
+    val YELLOW = EnumChatFormatting.YELLOW
+    val WHITE = EnumChatFormatting.WHITE
+  }
+
+  implicit def str2chat(s: String): ChatComponentText = new ChatComponentText(s)
+  implicit def str2rich(s: String): RichChatComponent = new RichChatComponent(new ChatComponentText(s))
+  implicit def pimpIChatComponent(v: IChatComponent): RichChatComponent = new RichChatComponent(v)
+
+  def C(s: String) = new ChatComponentText(s)
+  def L(s: String, params: IChatComponent*) = new ChatComponentTranslation(s, params: _*)
+}

src/net/bdew/lib/items/SimpleItem.scala

@@ -24,6 +24,6 @@ class SimpleItem(val name: String) extends Item with NamedItem {
 
   @SideOnly(Side.CLIENT)
   override def registerIcons(reg: IIconRegister) {
-    itemIcon = reg.registerIcon(modId + ":" + name.toLowerCase)
+    itemIcon = reg.registerIcon(Misc.iconName(modId, name))
   }
 }

src/net/bdew/lib/machine/Machine.scala

@@ -11,10 +11,11 @@ package net.bdew.lib.machine
 
 import cpw.mods.fml.common.registry.GameRegistry
 import net.bdew.lib.Misc
-import net.bdew.lib.block.HasTE
+import net.bdew.lib.block.{HasItemBlock, HasTE}
 import net.bdew.lib.recipes.gencfg.ConfigSection
 import net.minecraft.block.Block
 import net.minecraft.creativetab.CreativeTabs
+import net.minecraft.item.ItemBlock
 
 abstract class Machine[T <: Block](val name: String, blockConstruct: => T) {
   var block: T = null.asInstanceOf[T]
@@ -24,7 +25,14 @@ abstract class Machine[T <: Block](val name: String, blockConstruct: => T) {
 
   def regBlock(creativeTab: CreativeTabs) {
     block = blockConstruct
-    GameRegistry.registerBlock(block, name)
+
+    val itemClass: Class[_ <: ItemBlock] = if (block.isInstanceOf[HasItemBlock])
+      block.asInstanceOf[HasItemBlock].ItemBlockClass
+    else
+      classOf[ItemBlock]
+
+    GameRegistry.registerBlock(block, itemClass, name)
+
     block.setCreativeTab(creativeTab)
     if (block.isInstanceOf[HasTE[_]]) {
       GameRegistry.registerTileEntity(block.asInstanceOf[HasTE[_]].TEClass, "%s.%s".format(modId, name))

src/net/bdew/lib/multiblock/MachineCore.scala

@@ -9,11 +9,16 @@
 
 package net.bdew.lib.multiblock
 
+import net.bdew.lib.machine.Machine
+import net.bdew.lib.multiblock.block.BlockController
 import net.bdew.lib.recipes.gencfg.{ConfigSection, EntryDouble}
 
-trait MachineCore {
+trait MachineCore extends {
+  this: Machine[_ <: BlockController[_]] =>
   var tuning: ConfigSection
 
+  def getController: BlockController[_] = block
+
   def cfgSectionToMap(name: String) = tuning.getSection(name).map({
     case (n, EntryDouble(v)) => n -> v.toInt
     case (n, x) => sys.error("Invalid config value in section %s%s.%s = %s".format(tuning.pfx, name, n, x))

src/net/bdew/lib/multiblock/Tools.scala

@@ -41,7 +41,7 @@ object Tools {
     val seen = mutable.Set.empty[BlockRef]
     val queue = mutable.Queue.empty[BlockRef]
     queue ++= getConnectedNeighbours(world, core, core, seen)
-    while (queue.size > 0) {
+    while (queue.nonEmpty) {
       val current = queue.dequeue()
       seen.add(current)
       queue ++= getConnectedNeighbours(world, core, current, seen)

src/net/bdew/lib/multiblock/block/BlockController.scala

@@ -9,17 +9,22 @@
 
 package net.bdew.lib.multiblock.block
 
-import net.bdew.lib.block.{BlockRef, HasTE}
-import net.bdew.lib.multiblock.ResourceProvider
+import net.bdew.lib.Misc
+import net.bdew.lib.block.{BlockRef, BlockTooltip, HasTE}
 import net.bdew.lib.multiblock.tile.TileController
+import net.bdew.lib.multiblock.{MachineCore, ResourceProvider}
 import net.bdew.lib.render.connected.ConnectedTextureBlock
 import net.minecraft.block.Block
 import net.minecraft.block.material.Material
 import net.minecraft.entity.player.EntityPlayer
+import net.minecraft.item.ItemStack
+import net.minecraft.util.EnumChatFormatting
 import net.minecraft.world.{IBlockAccess, World}
 
 abstract class BlockController[T <: TileController](val name: String, material: Material, val TEClass: Class[T])
-  extends Block(material) with HasTE[T] with ConnectedTextureBlock {
+  extends Block(material) with HasTE[T] with ConnectedTextureBlock with BlockTooltip {
+
+  var machine: MachineCore = null
 
   def resources: ResourceProvider
 
@@ -39,6 +44,23 @@ abstract class BlockController[T <: TileController](val name: String, material:
     getTE(world, x, y, z).onClick(player)
     return true
   }
+
+  override def getTooltip(stack: ItemStack, player: EntityPlayer, advanced: Boolean): List[String] = {
+    List(Misc.toLocal("bdlib.multiblock.tip.controller")) ++ (
+      for ((kind, max) <- machine.modules) yield {
+        val name = Misc.toLocalF(resources.getModuleName(kind))
+        if (machine.required.getOrElse(kind, 0) > 0) {
+          Misc.toLocalF("bdlib.multiblock.tip.module.range",
+            EnumChatFormatting.YELLOW + name + EnumChatFormatting.RESET,
+            EnumChatFormatting.YELLOW + machine.required(kind).toString + EnumChatFormatting.RESET,
+            EnumChatFormatting.YELLOW + max.toString + EnumChatFormatting.RESET)
+        } else {
+          Misc.toLocalF("bdlib.multiblock.tip.module.max",
+            EnumChatFormatting.YELLOW + name + EnumChatFormatting.RESET,
+            EnumChatFormatting.YELLOW + max.toString + EnumChatFormatting.RESET)
+        }
+      })
+  }
 }
 
 

src/net/bdew/lib/multiblock/block/BlockModule.scala

@@ -9,7 +9,9 @@
 
 package net.bdew.lib.multiblock.block
 
-import net.bdew.lib.block.{BlockRef, HasTE}
+import net.bdew.lib.Misc
+import net.bdew.lib.block.{BlockRef, BlockTooltip, HasTE}
+import net.bdew.lib.config.MachineManagerMultiblock
 import net.bdew.lib.multiblock.tile.TileModule
 import net.bdew.lib.multiblock.{ResourceProvider, Tools}
 import net.bdew.lib.render.connected.ConnectedTextureBlock
@@ -18,11 +20,11 @@ import net.minecraft.block.material.Material
 import net.minecraft.entity.EntityLivingBase
 import net.minecraft.entity.player.EntityPlayer
 import net.minecraft.item.ItemStack
-import net.minecraft.util.ChatComponentTranslation
+import net.minecraft.util.{ChatComponentTranslation, EnumChatFormatting}
 import net.minecraft.world.{IBlockAccess, World}
 
-abstract class BlockModule[T <: TileModule](val name: String, val kind: String, material: Material, val TEClass: Class[T])
-  extends Block(material) with HasTE[T] with ConnectedTextureBlock {
+abstract class BlockModule[T <: TileModule](val name: String, val kind: String, material: Material, val TEClass: Class[T], val machines: MachineManagerMultiblock)
+  extends Block(material) with HasTE[T] with ConnectedTextureBlock with BlockTooltip {
 
   def resources: ResourceProvider
 
@@ -60,10 +62,27 @@ abstract class BlockModule[T <: TileModule](val name: String, val kind: String,
       p <- te.connected.value
       bl <- p.block(world)
     } yield {
-      bl.onBlockActivated(world, p.x, p.y, p.z, player, meta, 0, 0, 0)
-    }) getOrElse {
+        bl.onBlockActivated(world, p.x, p.y, p.z, player, meta, 0, 0, 0)
+      }) getOrElse {
       player.addChatMessage(new ChatComponentTranslation("bdlib.multiblock.notconnected"))
     }
     true
   }
+
+  override def getTooltip(stack: ItemStack, player: EntityPlayer, advanced: Boolean): List[String] = {
+    List(Misc.toLocal("bdlib.multiblock.tip.module")) ++ (
+      for ((machine, (min, max)) <- machines.getMachinesForBlock(this)) yield {
+        val name = machine.getController.getLocalizedName
+        if (min > 0) {
+          Misc.toLocalF("bdlib.multiblock.tip.module.range",
+            EnumChatFormatting.YELLOW + name + EnumChatFormatting.RESET,
+            EnumChatFormatting.YELLOW + min.toString + EnumChatFormatting.RESET,
+            EnumChatFormatting.YELLOW + max.toString + EnumChatFormatting.RESET)
+        } else {
+          Misc.toLocalF("bdlib.multiblock.tip.module.max",
+            EnumChatFormatting.YELLOW + name + EnumChatFormatting.RESET,
+            EnumChatFormatting.YELLOW + max.toString + EnumChatFormatting.RESET)
+        }
+      })
+  }
 }

src/net/bdew/lib/multiblock/block/BlockOutput.scala

@@ -28,7 +28,7 @@ trait BlockOutput[T <: TileOutput[_]] extends BlockModule[T] with BlockAdditiona
 
   def getFaceOverlays(world: IBlockAccess, x: Int, y: Int, z: Int, face: ForgeDirection): List[FaceOverlay] = {
     var result = List.empty[FaceOverlay]
-    Option(getTE(world, x, y, z)) flatMap (_.getCore) map { core =>
+    Option(getTE(world, x, y, z)) flatMap (_.getCore) foreach { core =>
       val bf = BlockFace(x, y, z, face)
       if (core.outputFaces.contains(bf))
         result :+= FaceOverlay(resources.output, resources.outputColors(core.outputFaces(bf)))

src/net/bdew/lib/multiblock/data/DataSlotPos.scala

@@ -19,7 +19,7 @@ case class DataSlotPos(name: String, parent: DataSlotContainer) extends DataSlot
   setUpdate(UpdateKind.SAVE, UpdateKind.WORLD)
 
   def save(t: NBTTagCompound, kind: UpdateKind.Value) {
-    value map (x => t.setTag(name, Misc.applyMutator(x.writeToNBT, new NBTTagCompound)))
+    value foreach (x => t.setTag(name, Misc.applyMutator(x.writeToNBT, new NBTTagCompound)))
   }
 
   def load(t: NBTTagCompound, kind: UpdateKind.Value) {

src/net/bdew/lib/multiblock/gui/WidgetInfo.scala

@@ -14,11 +14,11 @@ import net.bdew.lib.gui.{Color, Point, Rect, Texture}
 
 import scala.collection.mutable
 
-class WidgetInfo(val rect: Rect, icon: Texture, text: => String, tooltip: => String) extends Widget {
+class WidgetInfoMulti(val rect: Rect, icon: Texture, text: => String, tooltip: => List[String]) extends Widget {
   final val iconRect = Rect(1, 1, 8, 8)
 
   override def handleTooltip(p: Point, tip: mutable.MutableList[String]) {
-    if (iconRect.contains(p) && tooltip != null) tip += tooltip
+    if (iconRect.contains(p) && tooltip != null) tip ++= tooltip
   }
 
   override def draw(mouse: Point) {
@@ -26,3 +26,5 @@ class WidgetInfo(val rect: Rect, icon: Texture, text: => String, tooltip: => Str
     parent.drawText(text, rect.origin +(12, 1), Color.darkGray, false)
   }
 }
+
+class WidgetInfo(rect: Rect, icon: Texture, text: => String, tooltip: => String) extends WidgetInfoMulti(rect, icon, text, List(tooltip))

src/net/bdew/lib/multiblock/gui/WidgetOutputIcon.scala

@@ -9,6 +9,8 @@
 
 package net.bdew.lib.multiblock.gui
 
+import java.util.Locale
+
 import net.bdew.lib.Misc
 import net.bdew.lib.gui.widgets.Widget
 import net.bdew.lib.gui.{Point, Rect, Texture}
@@ -24,7 +26,7 @@ class WidgetOutputIcon(p: Point, te: CIOutputFaces, output: Int) extends Widget
     val faces = te.outputFaces.inverted
     if (faces.isDefinedAt(output)) {
       val bf = faces(output)
-      bf.origin.block(te.getWorldObj) map { block =>
+      bf.origin.block(te.getWorldObj) foreach { block =>
         parent.drawTexture(rect, Texture(Texture.BLOCKS, block.getIcon(te.getWorldObj, bf.origin.x, bf.origin.y, bf.origin.z, bf.face.ordinal())))
         if (block.isInstanceOf[BlockAdditionalRender]) {
           for (over <- block.asInstanceOf[BlockAdditionalRender].getFaceOverlays(te.getWorldObj, bf.origin.x, bf.origin.y, bf.origin.z, bf.face))
@@ -43,7 +45,7 @@ class WidgetOutputIcon(p: Point, te: CIOutputFaces, output: Int) extends Widget
       val bf = faces(output)
       bf.origin.block(te.getWorldObj) map { block =>
         tip += block.getLocalizedName
-        tip += "%d, %d, %d - %s".format(bf.x, bf.y, bf.z, Misc.toLocal("bdlib.multiblock.face." + bf.face.toString.toLowerCase))
+        tip += "%d, %d, %d - %s".format(bf.x, bf.y, bf.z, Misc.toLocal("bdlib.multiblock.face." + bf.face.toString.toLowerCase(Locale.US)))
       }
     } else {
       tip += Misc.toLocal("bdlib.multiblock.disabled")

src/net/bdew/lib/multiblock/gui/WidgetRSConfig.scala

@@ -9,6 +9,8 @@
 
 package net.bdew.lib.multiblock.gui
 
+import java.util.Locale
+
 import net.bdew.lib.Misc
 import net.bdew.lib.gui.widgets.{WidgetButtonIcon, WidgetSubContainer}
 import net.bdew.lib.gui.{Point, Rect}
@@ -37,7 +39,7 @@ class WidgetRSConfig(te: CIOutputFaces, output: Int, p: Point) extends WidgetSub
 
   override def draw(mouse: Point) {
     bt.icon = icons(cfg.rsMode)
-    bt.hover = Misc.toLocal("bdlib.rsmode." + cfg.rsMode.toString.toLowerCase)
+    bt.hover = Misc.toLocal("bdlib.rsmode." + cfg.rsMode.toString.toLowerCase(Locale.US))
     super.draw(mouse)
   }
 

src/net/bdew/lib/multiblock/tile/TileController.scala

@@ -18,7 +18,7 @@ import net.bdew.lib.multiblock.{MachineCore, ResourceProvider, Tools}
 import net.minecraft.entity.player.EntityPlayer
 
 trait TileController extends TileDataSlots {
-  val modules = new DataSlotPosSet("modules", this).setUpdate(UpdateKind.WORLD, UpdateKind.SAVE, UpdateKind.RENDER)
+  val modules = new DataSlotPosSet("modules", this).setUpdate(UpdateKind.WORLD, UpdateKind.SAVE)
 
   def resources: ResourceProvider
   def cfg: MachineCore
@@ -29,7 +29,7 @@ trait TileController extends TileDataSlots {
 
   lazy val myPos = BlockRef(xCoord, yCoord, zCoord)
 
-  def getNumOfModules(kind: String) = modules.map(_.getTile[TileModule](getWorldObj)).flatten.count(_.kind == kind)
+  def getNumOfModules(kind: String) = modules.flatMap(_.getTile[TileModule](getWorldObj)).count(_.kind == kind)
 
   def onModulesChanged()
   def onClick(player: EntityPlayer)
@@ -59,7 +59,7 @@ trait TileController extends TileDataSlots {
 
   def validateModules() {
     modules.filter(x => {
-      !x.getTile[TileModule](getWorldObj).isDefined || !x.getBlock[BlockModule[TileModule]](getWorldObj).isDefined
+      x.getTile[TileModule](getWorldObj).isEmpty || x.getBlock[BlockModule[TileModule]](getWorldObj).isEmpty
     }).foreach(x => {
       BdLib.logWarn("Block at %s is not a valid module, removing from machine %s at %d,%d,%d", x, this.getClass.getSimpleName, xCoord, yCoord, zCoord)
       modules.remove(x)

src/net/bdew/lib/multiblock/tile/TileControllerGui.scala

@@ -10,21 +10,17 @@
 package net.bdew.lib.multiblock.tile
 
 import net.minecraft.entity.player.EntityPlayer
-import net.minecraft.util.{ChatComponentTranslation, ChatStyle, EnumChatFormatting}
 
 abstract class TileControllerGui extends TileController {
   def openGui(player: EntityPlayer)
 
   def onClick(player: EntityPlayer) = {
+    import net.bdew.lib.helpers.ChatHelper._
     val missing = cfg.required.filter({ case (mod, cnt) => getNumOfModules(mod) < cnt })
-    if (missing.size > 0) {
-      player.addChatMessage(new ChatComponentTranslation("bdlib.multiblock.incomplete")
-        .setChatStyle(new ChatStyle().setColor(EnumChatFormatting.RED)))
+    if (missing.nonEmpty) {
+      player.addChatMessage(L("bdlib.multiblock.incomplete").setColor(Color.RED))
       for ((mod, cnt) <- missing)
-        player.addChatMessage(
-          new ChatComponentTranslation("- %s %s", Integer.valueOf(cnt),
-            new ChatComponentTranslation(resources.getModuleName(mod)))
-            .setChatStyle(new ChatStyle().setColor(EnumChatFormatting.RED)))
+        player.addChatMessage(L("- %s %s", cnt.toString, L(resources.getModuleName(mod))).setColor(Color.RED))
     } else openGui(player)
   }
 

src/net/bdew/lib/multiblock/tile/TileOutput.scala

@@ -47,7 +47,7 @@ abstract class TileOutput[T <: OutputConfig] extends TileModule with MIOutput[T]
   def onConnectionsChanged(added: Set[ForgeDirection], removed: Set[ForgeDirection]) {}
 
   def doRescanFaces() {
-    getCore map { core =>
+    getCore foreach { core =>
       val connections = (
         ForgeDirection.VALID_DIRECTIONS
           filterNot { dir => core.modules.contains(myPos.neighbour(dir)) }
@@ -58,7 +58,7 @@ abstract class TileOutput[T <: OutputConfig] extends TileModule with MIOutput[T]
       val toRemove = known -- connections
       toRemove.foreach(x => core.removeOutput(myPos, x))
       toAdd.foreach(x => core.newOutput(myPos, x, makeCfgObject(x)))
-      if (toAdd.size > 0 || toRemove.size > 0) {
+      if (toAdd.nonEmpty || toRemove.nonEmpty) {
         onConnectionsChanged(toAdd, toRemove)
         getWorldObj.markBlockForUpdate(xCoord, yCoord, zCoord)
       }

src/net/bdew/lib/nbt/NBT.scala

@@ -9,7 +9,8 @@
 
 package net.bdew.lib.nbt
 
-import net.minecraft.nbt.{NBTBase, NBTTagCompound, NBTTagList}
+import net.minecraft.item.ItemStack
+import net.minecraft.nbt.{NBTBase, NBTTagByte, NBTTagCompound, NBTTagList}
 
 import scala.language.implicitConversions
 
@@ -17,20 +18,33 @@ object NBT {
 
   class NBTSerialized(val value: NBTBase) extends AnyVal
 
-  implicit def serializeNbtPrimitive[T: Type](v: T): NBTSerialized = new NBTSerialized(Type[T].toNBT(v))
+  object NBTSerialized {
+    implicit def serializeNbtPrimitive[T: Type](v: T): NBTSerialized = new NBTSerialized(Type[T].toNBT(v))
 
-  implicit def serializeNbtList[T: Type](v: List[T]): NBTSerialized = {
-    val list = new NBTTagList
-    for (x <- v) list.appendTag(Type[T].toNBT(x))
-    new NBTSerialized(list)
+    implicit def serializeNbtList[T: Type](v: Traversable[T]): NBTSerialized = {
+      val list = new NBTTagList
+      for (x <- v) list.appendTag(Type[T].toNBT(x))
+      new NBTSerialized(list)
+    }
+
+    // Boolean is special because it's represented as a byte in NBT
+    implicit def serializeBoolean(v: Boolean): NBTSerialized = new NBTSerialized(new NBTTagByte(if (v) 1 else 0))
+
+    // Itemstack serialization helpers
+    implicit def serializeItemStack(v: ItemStack): NBTSerialized = new NBTSerialized(NBT.from(v.writeToNBT _))
+    implicit def serializeItemStackList(v: Traversable[ItemStack]): NBTSerialized = serializeNbtList(v map (x => NBT.from(x.writeToNBT _)))
   }
 
-  def apply(pairs: (String, NBTSerialized)*): NBTTagCompound = apply(pairs.toMap)
-
-  def apply(m: Map[String, NBTSerialized]): NBTTagCompound = {
+  def apply(pairs: (String, NBTSerialized)*): NBTTagCompound = {
     val tag = new NBTTagCompound()
-    for ((k, v) <- m)
+    for ((k, v) <- pairs)
       tag.setTag(k, v.value)
     tag
   }
+
+  def from(f: (NBTTagCompound) => _) = {
+    val v = new NBTTagCompound
+    f(v)
+    v
+  }
 }

src/net/bdew/lib/nbt/RichNBTTagCompound.scala

@@ -9,6 +9,7 @@
 
 package net.bdew.lib.nbt
 
+import net.minecraft.item.ItemStack
 import net.minecraft.nbt.{NBTTagCompound, NBTTagList}
 
 import scala.language.implicitConversions
@@ -27,4 +28,5 @@ class RichNBTTagCompound(tag: NBTTagCompound) {
     tag.setTag(name, list)
   }
 
+  def toItemStack = Option(ItemStack.loadItemStackFromNBT(tag))
 }

src/net/bdew/lib/power/DataSlotPower.scala

@@ -34,6 +34,7 @@ case class DataSlotPower(name: String, parent: DataSlotContainer) extends DataSl
     val canExtract = Misc.clamp(v, 0F, stored)
     if ((canExtract > 0) && !simulate) {
       stored -= canExtract
+      if (stored < 1) stored = 0
       parent.dataSlotChanged(this)
     }
     return canExtract

src/net/bdew/lib/power/TileBaseProcessor.scala

@@ -13,12 +13,11 @@ import net.bdew.lib.data.DataSlotFloat
 import net.bdew.lib.data.base.{TileDataSlots, UpdateKind}
 import net.bdew.lib.machine.ProcessorMachine
 import net.bdew.lib.tile.TileExtended
-import net.bdew.lib.tile.inventory.{BreakableInventoryTile, PersistentInventoryTile, SidedInventory}
+import net.bdew.lib.tile.inventory.{PersistentInventoryTile, SidedInventory}
 
 abstract class TileBaseProcessor extends TileExtended
 with TileDataSlots
 with PersistentInventoryTile
-with BreakableInventoryTile
 with SidedInventory
 with TilePoweredBase {
   def cfg: ProcessorMachine

src/net/bdew/lib/recipes/RecipesHelper.scala

@@ -12,7 +12,7 @@ package net.bdew.lib.recipes
 import java.io._
 
 import cpw.mods.fml.common.FMLCommonHandler
-import net.bdew.lib.BdLib
+import net.bdew.lib.{BdLib, Misc}
 
 object RecipesHelper {
   /**
@@ -26,15 +26,14 @@ object RecipesHelper {
   def loadConfigs(modName: String, listResource: String, configDir: File, resBaseName: String, loader: RecipeLoader) {
     BdLib.logInfo("Loading internal config files for mod %s", modName)
 
-    val listReader = new BufferedReader(new InputStreamReader(getClass.getResourceAsStream(listResource)))
-    val internals = Iterator.continually(listReader.readLine)
-      .takeWhile(_ != null)
-      .map(_.trim)
-      .filterNot(_.startsWith("#"))
-      .filterNot(_.isEmpty)
-      .toList
-    listReader.close()
-
+    val internals = Misc.withAutoClose(new BufferedReader(new InputStreamReader(getClass.getResourceAsStream(listResource)))) { listReader =>
+      Iterator.continually(listReader.readLine)
+        .takeWhile(_ != null)
+        .map(_.trim)
+        .filterNot(_.startsWith("#"))
+        .filterNot(_.isEmpty)
+        .toList
+    }
 
     val overrideDir = new File(configDir, "overrides")
     if (!overrideDir.exists()) overrideDir.mkdir()
@@ -44,9 +43,10 @@ object RecipesHelper {
       if (overrideFile.exists()) {
         tryLoadConfig(new FileReader(overrideFile), overrideFile.getCanonicalPath, modName, loader)
       } else {
-        val resource = resBaseName + fileName
-        tryLoadConfig(new InputStreamReader(getClass.getResourceAsStream(resource)),
-          getClass.getResource(resource).toString, modName, loader)
+        val url = getClass.getResource(resBaseName + fileName)
+        Misc.withAutoClose(url.openStream()) { stream =>
+          tryLoadConfig(new InputStreamReader(stream), url.toString, modName, loader)
+        }
       }
     }
 

src/net/bdew/lib/recipes/gencfg/ConfigSection.scala

@@ -9,6 +9,8 @@
 
 package net.bdew.lib.recipes.gencfg
 
+import java.util.Locale
+
 import net.bdew.lib.gui.Color
 
 abstract class ConfigEntry
@@ -43,7 +45,7 @@ case class ConfigSection(pfx: String = "") extends ConfigEntry with Iterable[(St
   def getSection(id: String) = getRaw(id, classOf[ConfigSection])
 
   final val trueVals = Set("y", "true", "yes", "on")
-  def getBoolean(id: String) = trueVals.contains(getString(id).toLowerCase)
+  def getBoolean(id: String) = trueVals.contains(getString(id).toLowerCase(Locale.US))
 
   def hasValue(id: String) = raw.isDefinedAt(id)
 
@@ -59,8 +61,8 @@ case class ConfigSection(pfx: String = "") extends ConfigEntry with Iterable[(St
 
   def getInt(id: String) = getDouble(id).round.toInt
   def getFloat(id: String) = getDouble(id).toFloat
-  def getIntList(id: String) = getDoubleList(id).map(_.round.toInt).toList
-  def getFloatList(id: String) = getDoubleList(id).map(_.toFloat).toList
+  def getIntList(id: String) = getDoubleList(id).map(_.round.toInt)
+  def getFloatList(id: String) = getDoubleList(id).map(_.toFloat)
 
   def getColor(id: String) =
     raw(id) match {

src/net/bdew/lib/render/IconPreloader.scala

@@ -24,7 +24,7 @@ import net.minecraftforge.common.MinecraftForge
 class IconPreloader(kind: Int) {
   lazy val map = {
     (for {
-      method <- getClass.getMethods if method.getParameterTypes.length == 0 && classOf[TextureLoc].isAssignableFrom(method.getReturnType)
+      method <- getClass.getMethods if method.getParameterTypes.isEmpty && classOf[TextureLoc].isAssignableFrom(method.getReturnType)
       value <- Misc.asInstanceOpt(method.invoke(this), classOf[TextureLoc])
     } yield method.getName -> value).toMap
   }

src/net/bdew/lib/resource/DataSlotResourceKindOption.scala

@@ -18,7 +18,7 @@ case class DataSlotResourceKindOption(name: String, parent: DataSlotContainer) e
   setUpdate(UpdateKind.SAVE, UpdateKind.GUI)
 
   override def save(t: NBTTagCompound, kind: UpdateKind.Value) {
-    value map { r =>
+    value foreach { r =>
       t.setTag(name,
         Misc.applyMutator(new NBTTagCompound) { tag =>
           r.helperObject.saveToNBT(tag, r)

src/net/bdew/lib/rotate/RotatableTile.scala

@@ -13,5 +13,5 @@ import net.bdew.lib.data.DataSlotDirection
 import net.bdew.lib.data.base.{TileDataSlots, UpdateKind}
 
 trait RotatableTile extends TileDataSlots {
-  var rotation = DataSlotDirection("rotation", this).setUpdate(UpdateKind.SAVE, UpdateKind.WORLD)
+  var rotation = DataSlotDirection("rotation", this).setUpdate(UpdateKind.SAVE, UpdateKind.WORLD, UpdateKind.RENDER)
 }

src/net/bdew/lib/sensors/SlotSensorType.scala

@@ -16,7 +16,7 @@ import net.minecraft.inventory.{IInventory, Slot}
 
 class SlotSensorType[T, R](inv: IInventory, index: Int, x: Int, y: Int, ds: DataSlotSensor[T, R], types: => Seq[GenericSensorType[T, R]]) extends Slot(inv, index, x, y) with SlotClickable {
   override def onClick(button: Int, mods: Int, player: EntityPlayer) = {
-    if (mods == 0 && (button == 0 || button == 1) && types.size > 0 && player.inventory.getItemStack == null) {
+    if (mods == 0 && (button == 0 || button == 1) && types.nonEmpty && player.inventory.getItemStack == null) {
       val newSensor =
         if (button == 0)
           Misc.nextInSeq(types, ds.sensor)

src/net/bdew/lib/sensors/multiblock/SensorOutput.scala

@@ -9,6 +9,8 @@
 
 package net.bdew.lib.sensors.multiblock
 
+import java.util.Locale
+
 import cpw.mods.fml.relauncher.{Side, SideOnly}
 import net.bdew.lib.Misc
 import net.bdew.lib.gui._
@@ -58,7 +60,7 @@ trait SensorOutput extends GenericSensorType[TileEntity, Boolean] {
       (current, obj) match {
         case (SensorOutputFlowParameter(n), x: CIOutputFaces) =>
           val outputs = x.outputFaces.map.values.toList.sorted
-          if (outputs.size > 0)
+          if (outputs.nonEmpty)
             if (button == 0)
               SensorOutputFlowParameter(Misc.nextInSeq(outputs, n))
             else
@@ -102,7 +104,7 @@ trait SensorOutput extends GenericSensorType[TileEntity, Boolean] {
         val bf = faces(output)
         bf.origin.block(te.getWorldObj) foreach { block =>
           list :+= block.getLocalizedName
-          list :+= "%d, %d, %d - %s".format(bf.x, bf.y, bf.z, Misc.toLocal("bdlib.multiblock.face." + bf.face.toString.toLowerCase))
+          list :+= "%d, %d, %d - %s".format(bf.x, bf.y, bf.z, Misc.toLocal("bdlib.multiblock.face." + bf.face.toString.toLowerCase(Locale.US)))
         }
       }
       list

src/net/bdew/lib/tile/inventory/BreakableInventoryBlock.scala

@@ -9,16 +9,15 @@
 
 package net.bdew.lib.tile.inventory
 
+import net.bdew.lib.block.HasTE
 import net.minecraft.block.Block
 import net.minecraft.world.World
 
 trait BreakableInventoryBlock extends Block {
+  this: HasTE[_ <: BreakableInventoryTile] =>
   override def breakBlock(world: World, x: Int, y: Int, z: Int, block: Block, meta: Int) {
     if (!world.isRemote) {
-      val te = world.getTileEntity(x, y, z).asInstanceOf[BreakableInventoryTile]
-      if (te != null) {
-        te.dropItems()
-      }
+      getTE(world, x, y, z).dropItems()
     }
     super.breakBlock(world, x, y, z, block, meta)
   }

src/net/bdew/lib/tile/inventory/BreakableInventoryTile.scala

@@ -19,7 +19,7 @@ trait BreakableInventoryTile extends TileEntity with BaseInventory {
       for (stack <- inv if stack != null) {
         ItemUtils.throwItemAt(getWorldObj, xCoord, yCoord, zCoord, stack)
       }
-      inv = new Array[ItemStack](inv.size)
+      inv = new Array[ItemStack](inv.length)
     }
   }
 }

src/net/bdew/lib/tile/inventory/InventoryProxy.scala

@@ -17,11 +17,11 @@ import net.minecraft.tileentity.TileEntity
 trait InventoryProxy extends TileEntity with IInventory {
   def targetInventory: Option[IInventory]
 
-  override def openInventory() = targetInventory map (_.openInventory())
-  override def closeInventory() = targetInventory map (_.closeInventory())
+  override def openInventory() = targetInventory foreach (_.openInventory())
+  override def closeInventory() = targetInventory foreach (_.closeInventory())
 
   override def markDirty() = {
-    targetInventory map (_.markDirty())
+    targetInventory foreach (_.markDirty())
     super.markDirty()
   }
 
@@ -30,7 +30,7 @@ trait InventoryProxy extends TileEntity with IInventory {
 
   override def getStackInSlot(slot: Int) = targetInventory.map(_.getStackInSlot(slot)).orNull
   override def getStackInSlotOnClosing(slot: Int) = targetInventory.map(_.getStackInSlotOnClosing(slot)).orNull
-  override def setInventorySlotContents(slot: Int, item: ItemStack) = targetInventory.map(_.setInventorySlotContents(slot, item))
+  override def setInventorySlotContents(slot: Int, item: ItemStack) = targetInventory.foreach(_.setInventorySlotContents(slot, item))
   override def decrStackSize(slot: Int, num: Int) = targetInventory.map(_.decrStackSize(slot, num)).orNull
 
   override def isItemValidForSlot(slot: Int, item: ItemStack) = targetInventory.exists(_.isItemValidForSlot(slot, item))

src/net/bdew/lib/tile/inventory/MultipleInventoryAdapter.scala

@@ -15,9 +15,9 @@ import net.minecraft.item.ItemStack
 
 class MultipleInventoryAdapter(val map: Map[Int, (IInventory, Int)]) extends IInventory {
   def this(inventories: Iterable[IInventory]) =
-    this((inventories map { inv => (0 until inv.getSizeInventory).map((inv, _)) }).flatten.zipWithIndex.map(_.swap).toMap)
+    this((inventories flatMap { inv => (0 until inv.getSizeInventory).map((inv, _)) }).zipWithIndex.map(_.swap).toMap)
   def this(inventories: IInventory*) =
-    this((inventories map { inv => (0 until inv.getSizeInventory).map((inv, _)) }).flatten.zipWithIndex.map(_.swap).toMap)
+    this((inventories flatMap { inv => (0 until inv.getSizeInventory).map((inv, _)) }).zipWithIndex.map(_.swap).toMap)
 
   lazy val inventories = map.values.map(_._1).toSet
   override lazy val getInventoryStackLimit = inventories.map(_.getInventoryStackLimit).min

src/net/bdew/lib/tile/inventory/SidedInventory.scala

@@ -15,7 +15,7 @@ import net.minecraft.item.ItemStack
 trait SidedInventory extends BaseInventory with ISidedInventory {
   var allowSided = false
 
-  def getAccessibleSlotsFromSide(side: Int): Array[Int] = (0 until inv.size).toArray
+  def getAccessibleSlotsFromSide(side: Int): Array[Int] = inv.indices.toArray
 
   def canInsertItem(slot: Int, stack: ItemStack, side: Int) = allowSided && isItemValidForSlot(slot, stack)
 

src/net/bdew/lib/tooltip/FluidTooltipProvider.scala

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) bdew, 2013 - 2015
+ * https://github.com/bdew/bdlib
+ *
+ * This mod is distributed under the terms of the Minecraft Mod Public
+ * License 1.0, or MMPL. Please check the contents of the license located in
+ * http://bdew.net/minecraft-mod-public-license/
+ */
+
+package net.bdew.lib.tooltip
+
+import net.minecraft.item.ItemStack
+import net.minecraftforge.fluids.{FluidContainerRegistry, FluidStack, IFluidContainerItem}
+
+trait FluidTooltipProvider extends TooltipProvider {
+  def getFluid(is: ItemStack): Option[FluidStack] = {
+    if (is.getItem.isInstanceOf[IFluidContainerItem]) {
+      Option(is.getItem.asInstanceOf[IFluidContainerItem].getFluid(is))
+    } else {
+      Option(FluidContainerRegistry.getFluidForFilledItem(is))
+    }
+  }
+
+  override def shouldHandleTooltip(stack: ItemStack): Boolean = getFluid(stack) exists shouldHandleTooltip
+  override def handleTooltip(stack: ItemStack, advanced: Boolean, shift: Boolean): Iterable[String] =
+    getFluid(stack) map (f => handleTooltip(f, advanced, shift)) getOrElse Iterable.empty
+
+  def shouldHandleTooltip(fluid: FluidStack): Boolean
+  def handleTooltip(fluid: FluidStack, advanced: Boolean, shift: Boolean): Iterable[String]
+}

src/net/bdew/lib/tooltip/TooltipHandler.scala

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) bdew, 2013 - 2015
+ * https://github.com/bdew/bdlib
+ *
+ * This mod is distributed under the terms of the Minecraft Mod Public
+ * License 1.0, or MMPL. Please check the contents of the license located in
+ * http://bdew.net/minecraft-mod-public-license/
+ */
+
+package net.bdew.lib.tooltip
+
+import cpw.mods.fml.common.eventhandler.SubscribeEvent
+import net.bdew.lib.{BdLib, Client}
+import net.minecraftforge.common.MinecraftForge
+import net.minecraftforge.event.entity.player.ItemTooltipEvent
+
+object TooltipHandler {
+  var registry = List.empty[TooltipProvider]
+
+  def init() {
+    MinecraftForge.EVENT_BUS.register(this)
+  }
+
+  def register(p: TooltipProvider) = registry :+= p
+
+  @SubscribeEvent
+  def handleTooltipEvent(ev: ItemTooltipEvent): Unit = {
+    if (ev.itemStack == null || ev.itemStack.getItem == null) return
+
+    val toAdd = for (provider <- registry) yield {
+      try {
+        if (provider.shouldHandleTooltip(ev.itemStack))
+          Some(provider.handleTooltip(ev.itemStack, ev.showAdvancedItemTooltips, Client.shiftDown))
+        else
+          None
+      } catch {
+        case t: Throwable =>
+          BdLib.logErrorException("Error in tooltip provider %s", t, provider)
+          None
+      }
+    }
+
+    import scala.collection.JavaConversions._
+
+    ev.toolTip ++= toAdd.flatten.flatten
+  }
+}

src/net/bdew/lib/tooltip/TooltipProvider.scala

@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) bdew, 2013 - 2015
+ * https://github.com/bdew/bdlib
+ *
+ * This mod is distributed under the terms of the Minecraft Mod Public
+ * License 1.0, or MMPL. Please check the contents of the license located in
+ * http://bdew.net/minecraft-mod-public-license/
+ */
+
+package net.bdew.lib.tooltip
+
+import net.minecraft.item.ItemStack
+
+trait TooltipProvider {
+  def shouldHandleTooltip(stack: ItemStack): Boolean
+  def handleTooltip(stack: ItemStack, advanced: Boolean, shift: Boolean): Iterable[String]
+}
+