Minetest-WorldEdit/worldedit/manipulations.lua

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worldedit = worldedit or {}
--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
--sets a region defined by positions `pos1` and `pos2` to `nodename`, returning the number of nodes filled
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worldedit.set = function(pos1, pos2, nodename, env)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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if env == nil then env = minetest.env end
local node = {name=nodename}
local pos = {x=pos1.x, y=0, z=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
env:add_node(pos, node)
pos.z = pos.z + 1
end
pos.y = pos.y + 1
end
pos.x = pos.x + 1
end
return worldedit.volume(pos1, pos2)
end
--replaces all instances of `searchnode` with `replacenode` in a region defined by positions `pos1` and `pos2`, returning the number of nodes replaced
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worldedit.replace = function(pos1, pos2, searchnode, replacenode, env)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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if env == nil then env = minetest.env end
if minetest.registered_nodes[searchnode] == nil then
searchnode = "default:" .. searchnode
end
local pos = {x=pos1.x, y=0, z=0}
local node = {name=replacenode}
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
if env:get_node(pos).name == searchnode then
env:add_node(pos, node)
count = count + 1
end
pos.z = pos.z + 1
end
pos.y = pos.y + 1
end
pos.x = pos.x + 1
end
return count
end
--replaces all nodes other than `searchnode` with `replacenode` in a region defined by positions `pos1` and `pos2`, returning the number of nodes replaced
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worldedit.replaceinverse = function(pos1, pos2, searchnode, replacenode, env)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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if env == nil then env = minetest.env end
if minetest.registered_nodes[searchnode] == nil then
searchnode = "default:" .. searchnode
end
local pos = {x=pos1.x, y=0, z=0}
local node = {name=replacenode}
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 name = env:get_node(pos).name
if name ~= "ignore" and name ~= searchnode then
env:add_node(pos, node)
count = count + 1
end
pos.z = pos.z + 1
end
pos.y = pos.y + 1
end
pos.x = pos.x + 1
end
return count
end
--copies the region defined by positions `pos1` and `pos2` along the `axis` axis ("x" or "y" or "z") by `amount` nodes, returning the number of nodes copied
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worldedit.copy = function(pos1, pos2, axis, amount, env)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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if env == nil then env = minetest.env end
if amount < 0 then
local pos = {x=pos1.x, y=0, z=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 = env:get_node(pos) --obtain current node
local meta = env:get_meta(pos):to_table() --get meta of current node
local value = pos[axis] --store current position
pos[axis] = value + amount --move along axis
env:add_node(pos, node) --copy node to new position
env:get_meta(pos):from_table(meta) --set metadata of new node
pos[axis] = value --restore old position
pos.z = pos.z + 1
end
pos.y = pos.y + 1
end
pos.x = pos.x + 1
end
else
local pos = {x=pos2.x, y=0, z=0}
while pos.x >= pos1.x do
pos.y = pos2.y
while pos.y >= pos1.y do
pos.z = pos2.z
while pos.z >= pos1.z do
local node = minetest.env:get_node(pos) --obtain current node
local meta = env:get_meta(pos):to_table() --get meta of current node
local value = pos[axis] --store current position
pos[axis] = value + amount --move along axis
minetest.env:add_node(pos, node) --copy node to new position
env:get_meta(pos):from_table(meta) --set metadata of new node
pos[axis] = value --restore old position
pos.z = pos.z - 1
end
pos.y = pos.y - 1
end
pos.x = pos.x - 1
end
end
return worldedit.volume(pos1, pos2)
end
--moves the region defined by positions `pos1` and `pos2` along the `axis` axis ("x" or "y" or "z") by `amount` nodes, returning the number of nodes moved
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worldedit.move = function(pos1, pos2, axis, amount, env)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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if env == nil then env = minetest.env end
if amount < 0 then
local pos = {x=pos1.x, y=0, z=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 = env:get_node(pos) --obtain current node
local meta = env:get_meta(pos):to_table() --get metadata of current node
env:remove_node(pos)
local value = pos[axis] --store current position
pos[axis] = value + amount --move along axis
env:add_node(pos, node) --move node to new position
env:get_meta(pos):from_table(meta) --set metadata of new node
pos[axis] = value --restore old position
pos.z = pos.z + 1
end
pos.y = pos.y + 1
end
pos.x = pos.x + 1
end
else
local pos = {x=pos2.x, y=0, z=0}
while pos.x >= pos1.x do
pos.y = pos2.y
while pos.y >= pos1.y do
pos.z = pos2.z
while pos.z >= pos1.z do
local node = env:get_node(pos) --obtain current node
local meta = env:get_meta(pos):to_table() --get metadata of current node
env:remove_node(pos)
local value = pos[axis] --store current position
pos[axis] = value + amount --move along axis
env:add_node(pos, node) --move node to new position
env:get_meta(pos):from_table(meta) --set metadata of new node
pos[axis] = value --restore old position
pos.z = pos.z - 1
end
pos.y = pos.y - 1
end
pos.x = pos.x - 1
end
end
return worldedit.volume(pos1, pos2)
end
--duplicates the region defined by positions `pos1` and `pos2` along the `axis` axis ("x" or "y" or "z") `count` times, returning the number of nodes stacked
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worldedit.stack = function(pos1, pos2, axis, count, env)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local length = pos2[axis] - pos1[axis] + 1
if count < 0 then
count = -count
length = -length
end
local amount = 0
local copy = worldedit.copy
for i = 1, count do
amount = amount + length
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copy(pos1, pos2, axis, amount, env)
end
return worldedit.volume(pos1, pos2)
end
--transposes a region defined by the positions `pos1` and `pos2` between the `axis1` and `axis2` axes, returning the number of nodes transposed, the new position 1, and the new position 2
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worldedit.transpose = function(pos1, pos2, axis1, axis2, env)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local compare
local extent1, extent2 = pos2[axis1] - pos1[axis1], pos2[axis2] - pos1[axis2]
if extent1 > extent2 then
compare = function(extent1, extent2)
return extent1 > extent2
end
else
compare = function(extent1, extent2)
return extent1 < extent2
end
end
--calculate the new position 2 after transposition
local newpos2 = {x=pos2.x, y=pos2.y, z=pos2.z}
newpos2[axis1] = pos1[axis1] + extent2
newpos2[axis2] = pos1[axis2] + extent1
local pos = {x=pos1.x, y=0, z=0}
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if env == nil then env = minetest.env end
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 extent1, extent2 = pos[axis1] - pos1[axis1], pos[axis2] - pos1[axis2]
if compare(extent1, extent2) then --transpose only if below the diagonal
local node1 = env:get_node(pos)
local meta1 = env:get_meta(pos):to_table()
local value1, value2 = pos[axis1], pos[axis2] --save position values
pos[axis1], pos[axis2] = pos1[axis1] + extent2, pos1[axis2] + extent1 --swap axis extents
local node2 = env:get_node(pos)
local meta2 = env:get_meta(pos):to_table()
env:add_node(pos, node1)
env:get_meta(pos):from_table(meta1)
pos[axis1], pos[axis2] = value1, value2 --restore position values
env:add_node(pos, node2)
env:get_meta(pos):from_table(meta2)
end
pos.z = pos.z + 1
end
pos.y = pos.y + 1
end
pos.x = pos.x + 1
end
return worldedit.volume(pos1, pos2), pos1, newpos2
end
--flips a region defined by the positions `pos1` and `pos2` along the `axis` axis ("x" or "y" or "z"), returning the number of nodes flipped
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worldedit.flip = function(pos1, pos2, axis, env)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local pos = {x=pos1.x, y=0, z=0}
local start = pos1[axis] + pos2[axis]
pos2[axis] = pos1[axis] + math.floor((pos2[axis] - pos1[axis]) / 2)
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if env == nil then env = minetest.env end
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 node1 = env:get_node(pos)
local meta1 = env:get_meta(pos):to_table()
local value = pos[axis]
pos[axis] = start - value
local node2 = env:get_node(pos)
local meta2 = env:get_meta(pos):to_table()
env:add_node(pos, node1)
env:get_meta(pos):from_table(meta1)
pos[axis] = value
env:add_node(pos, node2)
env:get_meta(pos):from_table(meta2)
pos.z = pos.z + 1
end
pos.y = pos.y + 1
end
pos.x = pos.x + 1
end
return worldedit.volume(pos1, pos2)
end
--rotates a region defined by the positions `pos1` and `pos2` by `angle` degrees clockwise around axis `axis` (90 degree increment), returning the number of nodes rotated
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worldedit.rotate = function(pos1, pos2, axis, angle, env)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local axis1, axis2
if axis == "x" then
axis1, axis2 = "z", "y"
elseif axis == "y" then
axis1, axis2 = "x", "z"
else --axis == "z"
axis1, axis2 = "y", "x"
end
angle = angle % 360
local count
if angle == 90 then
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worldedit.flip(pos1, pos2, axis1, env)
count, pos1, pos2 = worldedit.transpose(pos1, pos2, axis1, axis2, env)
elseif angle == 180 then
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worldedit.flip(pos1, pos2, axis1, env)
count = worldedit.flip(pos1, pos2, axis2, env)
elseif angle == 270 then
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worldedit.flip(pos1, pos2, axis2, env)
count, pos1, pos2 = worldedit.transpose(pos1, pos2, axis1, axis2, env)
end
return count, pos1, pos2
end
--rotates all oriented nodes in a region defined by the positions `pos1` and `pos2` by `angle` degrees clockwise (90 degree increment) around the Y axis, returning the number of nodes oriented
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worldedit.orient = function(pos1, pos2, angle, env)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local nodes = minetest.registered_nodes
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if env == nil then env = minetest.env end
local wallmounted = {
[90]={[0]=0, [1]=1, [2]=5, [3]=4, [4]=2, [5]=3},
[180]={[0]=0, [1]=1, [2]=3, [3]=2, [4]=5, [5]=4},
[270]={[0]=0, [1]=1, [2]=4, [3]=5, [4]=3, [5]=2}
}
local facedir = {
[90]={[0]=1, [1]=2, [2]=3, [3]=0},
[180]={[0]=2, [1]=3, [2]=0, [3]=1},
[270]={[0]=3, [1]=0, [2]=1, [3]=2}
}
angle = angle % 360
if angle == 0 then
return 0
end
local wallmounted_substitution = wallmounted[angle]
local facedir_substitution = facedir[angle]
local count = 0
local pos = {x=pos1.x, y=0, z=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 = env:get_node(pos)
local def = nodes[node.name]
if def then
if def.paramtype2 == "wallmounted" then
node.param2 = wallmounted_substitution[node.param2]
local meta = env:get_meta(pos):to_table()
env:add_node(pos, node)
env:get_meta(pos):from_table(meta)
count = count + 1
elseif def.paramtype2 == "facedir" then
node.param2 = facedir_substitution[node.param2]
local meta = env:get_meta(pos):to_table()
env:add_node(pos, node)
env:get_meta(pos):from_table(meta)
count = count + 1
end
end
pos.z = pos.z + 1
end
pos.y = pos.y + 1
end
pos.x = pos.x + 1
end
return count
end
--fixes the lighting in a region defined by positions `pos1` and `pos2`, returning the number of nodes updated
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worldedit.fixlight = function(pos1, pos2, env)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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if env == nil then env = minetest.env end
local count = 0
local pos = {x=pos1.x, y=0, z=0}
while pos.x <= pos2.x do
pos.y = pos1.y
while pos.y <= pos2.y do
pos.z = pos1.z
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while pos.z <= pos2.z do
if env:get_node(pos).name == "air" then
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env:dig_node(pos)
count = count + 1
end
pos.z = pos.z + 1
end
pos.y = pos.y + 1
end
pos.x = pos.x + 1
end
return count
end