Assign textures to different block sides

SpigotMC page

• When a block is converted, the plugin places a marker ArmorStand inside of it
  • its custom name contains the BlockFace & the configured material
  • an additional direction-marker ArmorStand is placed on the clicked block side
• When players move, the plugin checks all nearby marker ArmorStands
  • first, the block location is compared against the player's location, to see if the block face is visible to the player
  • then the plugin checks the direction-marker's line-of-sight to the player
  • if the player can see the BlockFace, a block-change packet is sent to only that player
  • (if they can't see it, a packet to reset the block is sent)
• Since it does the whole checking every time a player moves, it's currently not that resource friendly.