158 lines
4.0 KiB
Lua
158 lines
4.0 KiB
Lua
local function rshift(x, by)
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return math.floor(x / 2 ^ by)
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end
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local directions = {
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{x = 1, y = 0, z = 0},
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{x = 0, y = 0, z = 1},
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{x = -1, y = 0, z = 0},
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{x = 0, y = 0, z = -1},
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{x = 0, y = -1, z = 0},
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}
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local function update_wall(pos)
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if minetest.env:get_node(pos).name:find("cobble_wall:wall") == nil then
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return
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end
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local sum = 0
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for i = 1, 4 do
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local node = minetest.env:get_node({x = pos.x + directions[i].x, y = pos.y + directions[i].y, z = pos.z + directions[i].z})
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if minetest.registered_nodes[node.name].walkable then
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sum = sum + 2 ^ (i - 1)
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end
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end
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local node = minetest.env:get_node({x = pos.x, y = pos.y+1, z = pos.z})
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if sum == 5 or sum == 10 then
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if minetest.registered_nodes[node.name].walkable then
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sum = sum + 11
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end
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end
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--if sum == 0 then
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--sum = 15
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--end
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minetest.env:add_node(pos, {name = "cobble_wall:wall_"..sum})
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end
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local function update_nearby(pos)
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for i = 1,5 do
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update_wall({x = pos.x + directions[i].x, y = pos.y + directions[i].y, z = pos.z + directions[i].z})
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end
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end
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local half_blocks = {
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{4/16, -0.5, -3/16, 0.5, 5/16, 3/16},
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{-3/16, -0.5, 4/16, 3/16, 5/16, 0.5},
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{-0.5, -0.5, -3/16, -4/16, 5/16, 3/16},
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{-3/16, -0.5, -0.5, 3/16, 5/16, -4/16}
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}
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local pillar = {-4/16, -0.5, -4/16, 4/16, 0.5, 4/16}
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local full_blocks = {
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{-0.5, -0.5, -3/16, 0.5, 5/16, 3/16},
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{-3/16, -0.5, -0.5, 3/16, 5/16, 0.5}
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}
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for i = 0, 15 do
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local need = {}
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local need_pillar = false
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for j = 1, 4 do
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if rshift(i, j - 1) % 2 == 1 then
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need[j] = true
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end
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end
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local take = {}
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if need[1] == true and need[3] == true then
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need[1] = nil
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need[3] = nil
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table.insert(take, full_blocks[1])
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end
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if need[2] == true and need[4] == true then
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need[2] = nil
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need[4] = nil
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table.insert(take, full_blocks[2])
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end
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for k in pairs(need) do
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table.insert(take, half_blocks[k])
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need_pillar = true
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end
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if i == 15 or i == 0 then need_pillar = true end
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if need_pillar then table.insert(take, pillar) end
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minetest.register_node("cobble_wall:wall_"..i, {
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drawtype = "nodebox",
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tile_images = {"default_cobble.png"},
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paramtype = "light",
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groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3},
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drop = "cobble_wall:wall",
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node_box = {
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type = "fixed",
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fixed = take
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},
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})
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end
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minetest.register_node("cobble_wall:wall_0", {
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drawtype = "nodebox",
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tile_images = {"default_cobble.png"},
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paramtype = "light",
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groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3},
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drop = "cobble_wall:wall",
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node_box = {
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type = "fixed",
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fixed = pillar
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},
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})
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minetest.register_node("cobble_wall:wall_16", {
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drawtype = "nodebox",
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tile_images = {"default_cobble.png"},
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paramtype = "light",
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groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3},
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drop = "cobble_wall:wall",
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node_box = {
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type = "fixed",
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fixed = {pillar, full_blocks[1]}
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},
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})
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minetest.register_node("cobble_wall:wall_21", {
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drawtype = "nodebox",
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tile_images = {"default_cobble.png"},
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paramtype = "light",
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groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3},
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drop = "cobble_wall:wall",
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node_box = {
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type = "fixed",
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fixed = {pillar, full_blocks[2]}
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},
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})
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minetest.register_node("cobble_wall:wall", {
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description = "Cobblestone Wall",
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tile_images = {"default_cobble.png"},
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stack_max = 64,
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drawtype = "nodebox",
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node_box = {
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type = "fixed",
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fixed = pillar
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},
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on_construct = update_wall
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})
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minetest.register_on_placenode(update_nearby)
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minetest.register_on_dignode(update_nearby)
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minetest.register_craft({
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output = 'cobble_wall:wall 16',
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recipe = {
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{'default:cobble', 'default:cobble', 'default:cobble'},
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{'default:cobble', 'default:cobble', 'default:cobble'}
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}
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})
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