MineClone2/mods/mcl_walls/init.lua

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local function rshift(x, by)
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return math.floor(x / 2 ^ by)
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end
local directions = {
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{x = 1, y = 0, z = 0},
{x = 0, y = 0, z = 1},
{x = -1, y = 0, z = 0},
{x = 0, y = 0, z = -1},
{x = 0, y = -1, z = 0},
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}
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local function update_wall(pos)
local thisnode = minetest.get_node(pos)
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if minetest.get_item_group(thisnode.name, "wall") == 0 then
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return
end
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-- Get the node's base name, including the underscore since we will need it
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local colonpos = thisnode.name:find(":")
local underscorepos
local itemname, basename
if colonpos ~= nil then
itemname = thisnode.name:sub(colonpos+1)
end
underscorepos = itemname:find("_")
if underscorepos == nil then -- New wall
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basename = thisnode.name .. "_"
else -- Already placed wall
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basename = "mcl_walls:" .. itemname:sub(1, underscorepos)
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end
local sum = 0
-- Neighbouring walkable nodes
for i = 1, 4 do
local dir = directions[i]
local node = minetest.get_node({x = pos.x + dir.x, y = pos.y + dir.y, z = pos.z + dir.z})
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if minetest.registered_nodes[node.name].walkable then
sum = sum + 2 ^ (i - 1)
end
end
-- Torches or walkable nodes above the wall
local upnode = minetest.get_node({x = pos.x, y = pos.y+1, z = pos.z})
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if sum == 5 or sum == 10 then
if minetest.registered_nodes[upnode.name].walkable or upnode.name == "torches:floor" then
sum = sum + 11
end
end
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--[[if sum == 0 then
sum = 15
end]]
minetest.add_node(pos, {name = basename..sum})
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end
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local function update_wall_global(pos)
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for i = 1,5 do
local dir = directions[i]
update_wall({x = pos.x + dir.x, y = pos.y + dir.y, z = pos.z + dir.z})
end
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end
local half_blocks = {
{4/16, -0.5, -3/16, 0.5, 5/16, 3/16},
{-3/16, -0.5, 4/16, 3/16, 5/16, 0.5},
{-0.5, -0.5, -3/16, -4/16, 5/16, 3/16},
{-3/16, -0.5, -0.5, 3/16, 5/16, -4/16}
}
local pillar = {-4/16, -0.5, -4/16, 4/16, 0.5, 4/16}
local full_blocks = {
{-0.5, -0.5, -3/16, 0.5, 5/16, 3/16},
{-3/16, -0.5, -0.5, 3/16, 5/16, 0.5}
}
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--[[ Adds a new wall type.
* nodename: Itemstring of base node. Must not contain an underscore
* name: Item name, visible to user
* texture: Wall texture
* invtex: Inventory image ]]
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local function register_wall(nodename, name, texture, invtex)
for i = 0, 15 do
local need = {}
local need_pillar = false
for j = 1, 4 do
if rshift(i, j - 1) % 2 == 1 then
need[j] = true
end
end
local take = {}
if need[1] == true and need[3] == true then
need[1] = nil
need[3] = nil
table.insert(take, full_blocks[1])
end
if need[2] == true and need[4] == true then
need[2] = nil
need[4] = nil
table.insert(take, full_blocks[2])
end
for k in pairs(need) do
table.insert(take, half_blocks[k])
need_pillar = true
end
if i == 15 or i == 0 then need_pillar = true end
if need_pillar then table.insert(take, pillar) end
minetest.register_node(nodename.."_"..i, {
collision_box = {
type = 'fixed',
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fixed = {-4/16, -0.5, -4/16, 4/16, 1, 4/16}
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},
drawtype = "nodebox",
is_ground_content = false,
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tiles = {texture},
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paramtype = "light",
groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,wall=1,not_in_creative_inventory=1},
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drop = nodename,
node_box = {
type = "fixed",
fixed = take
},
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sounds = default.node_sound_stone_defaults(),
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})
end
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minetest.register_node(nodename.."_16", {
drawtype = "nodebox",
collision_box = {
type = 'fixed',
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fixed = {-4/16, -0.5, -4/16, 4/16, 1, 4/16}
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},
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tiles = {texture},
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paramtype = "light",
is_ground_content = false,
groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,wall=1,not_in_creative_inventory=1},
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drop = nodename,
node_box = {
type = "fixed",
fixed = {pillar, full_blocks[1]}
},
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sounds = default.node_sound_stone_defaults(),
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})
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minetest.register_node(nodename.."_21", {
drawtype = "nodebox",
collision_box = {
type = 'fixed',
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fixed = {-4/16, -0.5, -4/16, 4/16, 1, 4/16}
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},
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tiles = {texture},
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paramtype = "light",
is_ground_content = false,
groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,wall=1,not_in_creative_inventory=1},
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drop = nodename,
node_box = {
type = "fixed",
fixed = {pillar, full_blocks[2]}
},
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sounds = default.node_sound_stone_defaults(),
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})
-- Inventory item
minetest.register_node(nodename, {
description = name,
paramtype = "light",
is_ground_content = false,
groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,wall=1,deco_block=1},
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tiles = {texture},
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inventory_image = invtex,
stack_max = 64,
drawtype = "nodebox",
node_box = {
type = "fixed",
fixed = pillar
},
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collision_box = {
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type = 'fixed',
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fixed = {-4/16, -0.5, -4/16, 4/16, 1, 4/16}
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},
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collisionbox = {-0.2, 0, -0.2, 0.2, 1.4, 0.2},
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on_construct = update_wall,
sounds = default.node_sound_stone_defaults(),
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})
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end
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-- Cobblestone wall
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register_wall("mcl_walls:cobble", "Cobblestone Wall", "default_cobble.png", "mcl_walls_cobble.png")
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minetest.register_craft({
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output = 'mcl_walls:cobble 6',
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recipe = {
{'default:cobble', 'default:cobble', 'default:cobble'},
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{'default:cobble', 'default:cobble', 'default:cobble'}
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}
})
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-- Mossy wall
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register_wall("mcl_walls:mossycobble", "Mossy Cobblestone Wall", "default_mossycobble.png", "mcl_walls_mossycobble.png")
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minetest.register_craft({
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output = 'mcl_walls:mossycobble 6',
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recipe = {
{'default:mossycobble', 'default:mossycobble', 'default:mossycobble'},
{'default:mossycobble', 'default:mossycobble', 'default:mossycobble'}
}
})
minetest.register_on_placenode(update_wall_global)
minetest.register_on_dignode(update_wall_global)