Minetest-WorldEditAdditions/worldeditadditions/lib/layers.lua

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--- Overlap command. Places a specified node on top of each column.
-- @module worldeditadditions.overlay
function worldeditadditions.layers(pos1, pos2, node_weights)
pos1, pos2 = worldedit.sort_pos(pos1, pos2)
-- pos2 will always have the highest co-ordinates now
-- Fetch the nodes in the specified area
local manip, area = worldedit.manip_helpers.init(pos1, pos2)
local data = manip:get_data()
local node_id_ignore = minetest.get_content_id("ignore")
local node_ids, node_ids_count = worldeditadditions.unwind_node_list(node_weights)
-- minetest.log("action", "pos1: " .. worldeditadditions.vector.tostring(pos1))
-- minetest.log("action", "pos2: " .. worldeditadditions.vector.tostring(pos2))
for i,v in ipairs(node_ids) do
print("[layer] i", i, "node id", v)
end
-- z y x is the preferred loop order, but that isn't really possible here
local changes = { replaced = 0, skipped_columns = 0 }
for z = pos2.z, pos1.z, -1 do
for x = pos2.x, pos1.x, -1 do
local next_index = 1 -- We use table.insert() in make_weighted
local placed_node = false
for y = pos2.y, pos1.y, -1 do
local i = area:index(x, y, z)
local is_air = worldeditadditions.is_airlike(data[i])
local is_ignore = data[i] == node_id_ignore
if not is_air and not is_ignore then
-- It's not an airlike node or something else odd
data[i] = node_ids[next_index]
next_index = next_index + 1
changes.replaced = changes.replaced + 1
-- If we're done replacing nodes in this column, move to the next one
if next_index > #node_ids then
break
end
end
end
if not placed_node then
changes.skipped_columns = changes.skipped_columns + 1
end
end
end
-- Save the modified nodes back to disk & return
worldedit.manip_helpers.finish(manip, data)
return changes
end