/**
  * Runnable method to materialise the TARDIS Police Box. Tries to mimic the transparency of
  * materialisation by building the Police Box first with GLASS, then ICE, then the normall wall
  * block (BLUE WOOL or the chameleon material).
  *
  * @param plugin instance of the TARDIS plugin
  * @param tmd the TARDISMaterialisationData
  * @param preset the Chameleon preset currently in use by the TARDIS
  * @param lamp the id of the lamp block
  * @param cham_id the chameleon block id for the police box
  * @param cham_data the chameleon block data for the police box
  */
 public TARDISDematerialisationPreset(
     TARDIS plugin,
     TARDISMaterialisationData tmd,
     PRESET preset,
     int lamp,
     int cham_id,
     byte cham_data) {
   this.plugin = plugin;
   this.tmd = tmd;
   this.loops = 18;
   this.preset = preset;
   this.i = 0;
   this.lamp = lamp;
   this.cham_id = cham_id;
   this.cham_data = cham_data;
   column = plugin.getPresets().getColumn(preset, tmd.getDirection());
   stained_column = plugin.getPresets().getStained(preset, tmd.getDirection());
   glass_column = plugin.getPresets().getGlass(preset, tmd.getDirection());
 }