Stairs, slabs, trapdoors and doors

shape: makes a block that works exactly like that vanilla kind: stairs connect, slabs stack into double slabs, doors and trapdoors open by hand and with redstone.

marble_stairs:
  type: block
  shape: stairs
  texture: marble.png          # or textures: with top, bottom and side

marble_slab:
  type: block
  shape: slab
  textures: { top: marble_top.png, side: marble_side.png }

ruby_trapdoor:
  type: block
  shape: trapdoor
  texture: ruby_trapdoor.png

ruby_door:
  type: block
  shape: door
  textures:
    top: ruby_door_top.png
    bottom: ruby_door_bottom.png
  item-texture: ruby_door_item.png   # the icon; defaults to the top half
  open-by-hand: false                # only redstone opens it

Doors and trapdoors can have holes in their texture but no half-transparent pixels. Stairs and slabs are always drawn solid. Shaped blocks can’t have model, rotation or light.

Shaped blocks have a hard limit, because each design has to borrow a whole set of vanilla states: 3 stairs, 3 slabs, 24 trapdoors and 25 doors. Past that, loading tells you the shape is full.

For what they drop, see Drops.

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Stairs, slabs, trapdoors and doors