li/cil/oc/common/block/Computer.scala

package li.cil.oc.common.block

import li.cil.oc.common.tileentity
import net.minecraft.entity.player.EntityPlayer
import net.minecraft.world.{World, IBlockAccess}
import net.minecraftforge.common.ForgeDirection

abstract class Computer extends Delegate {
  override def hasTileEntity = true

  override def canConnectRedstone(world: IBlockAccess, x: Int, y: Int, z: Int, side: ForgeDirection) =
    world.getBlockTileEntity(x, y, z) match {
      case computer: tileentity.Computer => computer.isOutputEnabled
      case _ => false
    }

  override def isProvidingStrongPower(world: IBlockAccess, x: Int, y: Int, z: Int, side: ForgeDirection) =
    isProvidingWeakPower(world, x, y, z, side)

  override def isProvidingWeakPower(world: IBlockAccess, x: Int, y: Int, z: Int, side: ForgeDirection) =
    world.getBlockTileEntity(x, y, z) match {
      case computer: tileentity.Computer => computer.output(side) max 0 min 15
      case _ => super.isProvidingWeakPower(world, x, y, z, side)
    }

  override def onBlockActivated(world: World, x: Int, y: Int, z: Int, player: EntityPlayer,
                                side: ForgeDirection, hitX: Float, hitY: Float, hitZ: Float) = {
    if (!player.isSneaking) {
      if (!world.isRemote) {
        world.getBlockTileEntity(x, y, z) match {
          case t: tileentity.Computer if !t.computer.isPaused => t.computer.start()
          case _ =>
        }
      }
    }
    super.onBlockActivated(world, x, y, z, player, side, hitX, hitY, hitZ)
  }

  override def onNeighborBlockChange(world: World, x: Int, y: Int, z: Int, blockId: Int) =
    world.getBlockTileEntity(x, y, z) match {
      case computer: tileentity.Computer => computer.checkRedstoneInputChanged()
      case _ => // Ignore.
    }
}