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

package li.cil.oc.common.container

import li.cil.oc.api.component.RackMountable
import li.cil.oc.common.Slot
import li.cil.oc.common.tileentity
import li.cil.oc.util.ExtendedNBT._
import net.minecraft.entity.player.InventoryPlayer
import net.minecraft.nbt.NBTTagCompound
import net.minecraft.nbt.NBTTagIntArray
import net.minecraftforge.common.util.Constants.NBT
import net.minecraftforge.common.util.ForgeDirection

class Rack(playerInventory: InventoryPlayer, val rack: tileentity.Rack) extends Player(playerInventory, rack) {
  addSlotToContainer(20, 23, Slot.RackMountable)
  addSlotToContainer(20, 43, Slot.RackMountable)
  addSlotToContainer(20, 63, Slot.RackMountable)
  addSlotToContainer(20, 83, Slot.RackMountable)
  addPlayerInventorySlots(8, 128)

  final val MaxConnections = 4
  val nodePresence = Array.fill(4)(Array.fill(4)(false))

  override def updateCustomData(nbt: NBTTagCompound): Unit = {
    super.updateCustomData(nbt)
    nbt.getTagList("nodeMapping", NBT.TAG_INT_ARRAY).map((sides: NBTTagIntArray) => {
      sides.func_150302_c().map(side => if (side >= 0) Option(ForgeDirection.getOrientation(side)) else None)
    }).copyToArray(rack.nodeMapping)
    nbt.getBooleanArray("nodePresence").grouped(MaxConnections).copyToArray(nodePresence)
    rack.isRelayEnabled = nbt.getBoolean("isRelayEnabled")
  }

  override protected def detectCustomDataChanges(nbt: NBTTagCompound): Unit = {
    super.detectCustomDataChanges(nbt)
    nbt.setNewTagList("nodeMapping", rack.nodeMapping.map(sides => toNbt(sides.map {
      case Some(side) => side.ordinal()
      case _ => -1
    })))
    nbt.setBooleanArray("nodePresence", (0 until rack.getSizeInventory).flatMap(slot => rack.getMountable(slot) match {
      case mountable: RackMountable => (Seq(true) ++ (0 until math.min(MaxConnections - 1, mountable.getConnectableCount)).map(index => mountable.getConnectableAt(index) != null)).padTo(MaxConnections, false)
      case _ => Array.fill(MaxConnections)(false)
    }).toArray)
    nbt.setBoolean("isRelayEnabled", rack.isRelayEnabled)
  }
}