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worldedit = worldedit or {}
local minetest = minetest --local copy of global
--modifies positions `pos1` and `pos2` so that each component of `pos1` is less than or equal to its corresponding conent of `pos2`, returning two new positions
worldedit.sort_pos = function(pos1, pos2)
pos1 = {x=pos1.x, y=pos1.y, z=pos1.z}
pos2 = {x=pos2.x, y=pos2.y, z=pos2.z}
if pos1.x > pos2.x then
pos2.x, pos1.x = pos1.x, pos2.x
end
if pos1.y > pos2.y then
pos2.y, pos1.y = pos1.y, pos2.y
end
if pos1.z > pos2.z then
pos2.z, pos1.z = pos1.z, pos2.z
end
return pos1, pos2
end
--determines the volume of the region defined by positions `pos1` and `pos2`, returning the volume
worldedit.volume = function(pos1, pos2)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
return (pos2.x - pos1.x + 1) * (pos2.y - pos1.y + 1) * (pos2.z - pos1.z + 1)
end
minetest.register_node("worldedit:placeholder", {
drawtype = "airlike",
paramtype = "light",
sunlight_propagates = true,
diggable = false,
groups = {not_in_creative_inventory=1},
})
--hides all nodes in a region defined by positions `pos1` and `pos2` by non-destructively replacing them with invisible nodes, returning the number of nodes hidden
worldedit.hide = function(pos1, pos2)
--make area stay loaded
local manip = minetest.get_voxel_manip()
manip:read_from_map(pos1, pos2)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local pos = {x=pos1.x, y=0, z=0}
local get_node, get_meta, add_node = minetest.get_node, minetest.get_meta, minetest.add_node
while pos.x <= pos2.x do
pos.y = pos1.y
while pos.y <= pos2.y do
pos.z = pos1.z
while pos.z <= pos2.z do
local node = get_node(pos)
if node.name ~= "worldedit:placeholder" then
local data = get_meta(pos):to_table() --obtain metadata of original node
data.fields.worldedit_placeholder = node.name --add the node's name
node.name = "worldedit:placeholder" --set node name
add_node(pos, node) --add placeholder node
get_meta(pos):from_table(data) --set placeholder metadata to the original node's metadata
end
pos.z = pos.z + 1
end
pos.y = pos.y + 1
end
pos.x = pos.x + 1
end
return worldedit.volume(pos1, pos2)
end
--suppresses all instances of `nodename` in a region defined by positions `pos1` and `pos2` by non-destructively replacing them with invisible nodes, returning the number of nodes suppressed
worldedit.suppress = function(pos1, pos2, nodename)
--ignore placeholder supression
if nodename == "worldedit:placeholder" then
return 0
end
--make area stay loaded
local manip = minetest.get_voxel_manip()
manip:read_from_map(pos1, pos2)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local nodes = minetest.find_nodes_in_area(pos1, pos2, nodename)
local get_node, get_meta, add_node = minetest.get_node, minetest.get_meta, minetest.add_node
for _, pos in ipairs(nodes) do
local node = get_node(pos)
local data = get_meta(pos):to_table() --obtain metadata of original node
data.fields.worldedit_placeholder = node.name --add the node's name
node.name = "worldedit:placeholder" --set node name
add_node(pos, node) --add placeholder node
get_meta(pos):from_table(data) --set placeholder metadata to the original node's metadata
end
return #nodes
end
--highlights all instances of `nodename` in a region defined by positions `pos1` and `pos2` by non-destructively hiding all other nodes, returning the number of nodes found
worldedit.highlight = function(pos1, pos2, nodename)
--make area stay loaded
local manip = minetest.get_voxel_manip()
manip:read_from_map(pos1, pos2)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local pos = {x=pos1.x, y=0, z=0}
local get_node, get_meta, add_node = minetest.get_node, minetest.get_meta, minetest.add_node
local count = 0
while pos.x <= pos2.x do
pos.y = pos1.y
while pos.y <= pos2.y do
pos.z = pos1.z
while pos.z <= pos2.z do
local node = get_node(pos)
if node.name == nodename then --node found
count = count + 1
elseif node.name ~= "worldedit:placeholder" then --hide other nodes
local data = get_meta(pos):to_table() --obtain metadata of original node
data.fields.worldedit_placeholder = node.name --add the node's name
node.name = "worldedit:placeholder" --set node name
add_node(pos, node) --add placeholder node
get_meta(pos):from_table(data) --set placeholder metadata to the original node's metadata
end
pos.z = pos.z + 1
end
pos.y = pos.y + 1
end
pos.x = pos.x + 1
end
return count
end
--restores all nodes hidden with WorldEdit functions in a region defined by positions `pos1` and `pos2`, returning the number of nodes restored
worldedit.restore = function(pos1, pos2)
--make area stay loaded
local manip = minetest.get_voxel_manip()
manip:read_from_map(pos1, pos2)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local nodes = minetest.find_nodes_in_area(pos1, pos2, "worldedit:placeholder")
local get_node, get_meta, add_node = minetest.get_node, minetest.get_meta, minetest.add_node
for _, pos in ipairs(nodes) do
local node = get_node(pos)
local data = get_meta(pos):to_table() --obtain node metadata
node.name = data.fields.worldedit_placeholder --set node name
data.fields.worldedit_placeholder = nil --delete old nodename
add_node(pos, node) --add original node
get_meta(pos):from_table(data) --set original node metadata
end
return #nodes
end
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