Added Misc.forgeDirection, Misc.asInstanceOpt, Misc.getNeighbourTile and ItemUtils.getAccessibleSlotsFromSide helpers

src/net/bdew/lib/Misc.scala

@@ -17,6 +17,8 @@ import cpw.mods.fml.common.versioning.{ArtifactVersion, VersionParser}
 import cpw.mods.fml.common.Loader
 import net.minecraftforge.oredict.ShapedOreRecipe
 import net.minecraft.world.biome.BiomeGenBase
+import net.minecraftforge.common.ForgeDirection
+import net.minecraft.tileentity.TileEntity
 
 object Misc {
   def iterNbtList[X](list: NBTTagList) =
@@ -69,4 +71,16 @@ object Misc {
 
     return true
   }
+
+  // Because writing this every time is awkward
+  def forgeDirection(i: Int) = ForgeDirection.values()(i)
+
+  // Easy replacement for various "if(foo.isInstanceOf[Bar]) foo.asInstanceOf[Bar]" constructs
+  def asInstanceOpt[T](v: Any, cls: Class[T]) =
+    if (cls.isInstance(v)) Some(v.asInstanceOf[T]) else None
+
+  def getNeighbourTile[T](origin: TileEntity, dir: ForgeDirection, cls: Class[T]) =
+    Option(origin.worldObj.getBlockTileEntity(origin.xCoord + dir.offsetX,
+      origin.yCoord + dir.offsetY, origin.zCoord + dir.offsetZ)) flatMap (asInstanceOpt(_, cls))
 }
+

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

@@ -13,9 +13,10 @@ import net.minecraft.entity.item.EntityItem
 import net.minecraft.item.{Item, ItemStack}
 import net.minecraft.world.World
 import net.minecraft.entity.player.EntityPlayer
-import net.minecraft.inventory.IInventory
+import net.minecraft.inventory.{ISidedInventory, IInventory}
 import net.bdew.lib.Misc
 import java.util.Random
+import net.minecraftforge.common.ForgeDirection
 
 object ItemUtils {
   def throwItemAt(world: World, x: Int, y: Int, z: Int, stack: ItemStack) {
@@ -78,6 +79,11 @@ object ItemUtils {
     return stack
   }
 
+  def getAccessibleSlotsFromSide(inv: IInventory, side: ForgeDirection) =
+    (Misc.asInstanceOpt(inv, classOf[ISidedInventory])
+      map (_.getAccessibleSlotsFromSide(side.ordinal()).toList)
+      getOrElse (0 until inv.getSizeInventory))
+
   def findItemInInventory(inv: IInventory, item: Item) =
     Range(0, inv.getSizeInventory).map(x => x -> inv.getStackInSlot(x))
       .find({ case (slot, stack) => stack != null && stack.getItem == item })