Minetest-WorldEditAdditions/worldeditadditions/lib/fillcaves.lua

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2020-08-26 18:17:07 +00:00
--- Overlap command. Places a specified node on top of each column.
-- @module worldeditadditions.overlay
function worldeditadditions.fillcaves(pos1, pos2, node_name)
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_replace = minetest.get_content_id(node_name)
local node_id_ignore = minetest.get_content_id("ignore")
-- minetest.log("action", "pos1: " .. worldeditadditions.vector.tostring(pos1))
-- minetest.log("action", "pos2: " .. worldeditadditions.vector.tostring(pos2))
-- z y x is the preferred loop order, but that isn't really possible here
local changes = { replaced = 0 }
for z = pos2.z, pos1.z, -1 do
for x = pos2.x, pos1.x, -1 do
local is_first_node_in_col = true
local prev_is_air = false
local found_toplayer = false
for y = pos2.y, pos1.y, -1 do
local i = area:index(x, y, z)
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local is_air = worldeditadditions.is_airlike(data[i]) or worldeditadditions.is_liquidlike(data[i])
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local is_ignore = data[i] == node_id_ignore
-- If the previous node was air and this one isn't, then we've found the top level
if prev_is_air and not is_air then
found_toplayer = true
elseif is_first_node_in_col and not is_air then
found_toplayer = true
elseif found_toplayer and is_air and not is_ignore then
-- We've found the top layer already and this node is air,
-- so we should fill it in
data[i] = node_id_replace
changes.replaced = changes.replaced + 1
end
is_first_node_in_col = false
prev_is_air = is_air
end
end
end
-- Save the modified nodes back to disk & return
worldedit.manip_helpers.finish(manip, data)
return true, changes
end