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

package li.cil.oc.common.block

import cpw.mods.fml.relauncher.Side
import cpw.mods.fml.relauncher.SideOnly
import li.cil.oc.OpenComputers
import li.cil.oc.client.Textures
import li.cil.oc.common.GuiType
import li.cil.oc.common.tileentity
import net.minecraft.client.renderer.texture.IIconRegister
import net.minecraft.entity.player.EntityPlayer
import net.minecraft.world.IBlockAccess
import net.minecraft.world.World
import net.minecraftforge.common.util.ForgeDirection

class ServerRack extends RedstoneAware with traits.SpecialBlock with traits.PowerAcceptor {
  override protected def customTextures = Array(
    None,
    None,
    Some("ServerRackSide"),
    Some("ServerRackFront"),
    Some("ServerRackSide"),
    Some("ServerRackSide")
  )

  override def registerBlockIcons(iconRegister: IIconRegister) = {
    super.registerBlockIcons(iconRegister)
    System.arraycopy(icons, 0, Textures.ServerRack.icons, 0, icons.length)
  }

  @SideOnly(Side.CLIENT)
  override def getMixedBrightnessForBlock(world: IBlockAccess, x: Int, y: Int, z: Int) = {
    world.getTileEntity(x, y, z) match {
      case rack: tileentity.ServerRack =>
        def brightness(x: Int, y: Int, z: Int) = world.getLightBrightnessForSkyBlocks(x, y, z, getLightValue(world, x, y, z))
        val value = brightness(x + rack.facing.offsetX, y + rack.facing.offsetY, z + rack.facing.offsetZ)
        val skyBrightness = (value >> 20) & 15
        val blockBrightness = (value >> 4) & 15
        ((skyBrightness * 3 / 4) << 20) | ((blockBrightness * 3 / 4) << 4)
      case _ => super.getMixedBrightnessForBlock(world, x, y, z)
    }
  }

  override def isBlockSolid(world: IBlockAccess, x: Int, y: Int, z: Int, side: ForgeDirection) = side == ForgeDirection.SOUTH

  // ----------------------------------------------------------------------- //

  override def hasTileEntity(metadata: Int) = true

  override def createTileEntity(world: World, metadata: Int) = new tileentity.ServerRack()

  // ----------------------------------------------------------------------- //

  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) {
        player.openGui(OpenComputers, GuiType.Rack.id, world, x, y, z)
      }
      true
    }
    else false
  }
}