minetest.register_node('rob_opr_base:ceiling_tile', {
   description = 'Ceiling Tile',
   tiles = {{name='rob_opr_base_ceiling_tile.png', align_style='world', scale=8},{name='rob_opr_base_ceiling_tile.png', align_style='world', scale=8},{name='rob_opr_base_ducting.png', align_style='world', scale=8}},
   groups = {oddly_breakable_by_hand = 3}
})

minetest.register_node('rob_opr_base:ceiling_ridge_steel', {
   description = 'Ridged Steel Ceiling',
   tiles = {{name='rob_opr_base_ceiling_ridged_steel.png', align_style='world', scale=8}},
   groups = {oddly_breakable_by_hand = 3}
})

minetest.register_node('rob_opr_base:ducting', {
   description = 'Ducting',
   tiles = {{name='rob_opr_base_ducting.png', align_style='world', scale=8}},
   groups = {oddly_breakable_by_hand = 3},
})

minetest.register_node('rob_opr_base:floor_concrete', {
   description = 'A nice concrete floor',
   tiles = {{name='rob_opr_base_floor_concrete.png', align_style='world', scale=8}},
   groups = {oddly_breakable_by_hand = 3}
})

minetest.register_node('rob_opr_base:floor_concrete_slab', {
   description = 'A nice concrete floor (slab)',
   drawtype = 'nodebox',
   paramtype = 'light',
   paramtype2 = 'facedir',
   node_box = {
         type = "fixed",
         fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
      },
   tiles = {{name='rob_opr_base_floor_concrete.png', align_style='world', scale=8}},
   groups = {oddly_breakable_by_hand = 3}
})

minetest.register_node('rob_opr_base:floor_carpet', {
   description = 'A nice carpet floor',
   tiles = {{name='rob_opr_base_floor_carpet.png', align_style='world', scale=4}},
   groups = {oddly_breakable_by_hand = 3}
})

minetest.register_node('rob_opr_base:floor_tile', {
   description = 'Tile flooring',
   tiles = {{name='rob_opr_base_floor_tile.png', align_style='world', scale=8}},
   groups = {oddly_breakable_by_hand = 3}
})

minetest.register_node('rob_opr_base:floor_wood_tile', {
   description = 'Wodoen tile flooring',
   tiles = {{name='rob_opr_base_floor_wood_tile.png', align_style='world', scale=4}},
   groups = {oddly_breakable_by_hand = 3}
})

minetest.register_node('rob_opr_base:wall_blast', {
   description = 'Blast Wall',
   tiles = {{name='rob_opr_base_wall_blast.png', align_style='world', scale=8}},
   groups = {oddly_breakable_by_hand = 3}
})

minetest.register_node('rob_opr_base:wall_brick', {
   description = 'Brick Wall',
   tiles = {{name='rob_opr_base_wall_brick.png', align_style='world', scale=8}},
   groups = {oddly_breakable_by_hand = 3}
})

minetest.register_node('rob_opr_base:wall_wallpaper', {
   description = 'Wallpapered Wall',
   tiles = {{name='rob_opr_base_wall_wallpaper.png', align_style='world', scale=8}},
   groups = {oddly_breakable_by_hand = 3}
})

minetest.register_node('rob_opr_base:void', {
   description = 'A nice dark block for under the puzzles.',
   tiles = {{name='rob_opr_base_void.png', align_style='world', scale=4}},
   groups = {oddly_breakable_by_hand = 3}
})
