Minetest-WorldEdit/functions.lua

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dofile(minetest.get_modpath("worldedit") .. "/spirals.lua")
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--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
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--sets a region defined by positions `pos1` and `pos2` to `nodename`, returning the number of nodes filled
worldedit.set = function(pos1, pos2, nodename)
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local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local env = minetest.env
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
worldedit.replace = function(pos1, pos2, searchnode, replacenode)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local env = minetest.env
if searchnode:find(":") == 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
--adds a hollow cylinder at `pos` along the `axis` axis ("x" or "y" or "z") with length `length` and radius `radius`, returning the number of nodes added
worldedit.hollow_cylinder = function(pos, axis, length, radius, nodename)
local other1, other2
if axis == "x" then
other1, other2 = "y", "z"
elseif axis == "y" then
other1, other2 = "x", "z"
else --axis == "z"
other1, other2 = "x", "y"
end
local env = minetest.env
local currentpos = {x=pos.x, y=pos.y, z=pos.z}
local node = {name=nodename}
local count = 0
for i = 1, length do
local offset1, offset2 = 0, radius
local delta = -radius
while offset1 <= offset2 do
--add node at each octant
local first1, first2 = pos[other1] + offset1, pos[other1] - offset1
local second1, second2 = pos[other2] + offset2, pos[other2] - offset2
currentpos[other1], currentpos[other2] = first1, second1
env:add_node(currentpos, node) --octant 1
currentpos[other1] = first2
env:add_node(currentpos, node) --octant 4
currentpos[other2] = second2
env:add_node(currentpos, node) --octant 5
currentpos[other1] = first1
env:add_node(currentpos, node) --octant 8
local first1, first2 = pos[other1] + offset2, pos[other1] - offset2
local second1, second2 = pos[other2] + offset1, pos[other2] - offset1
currentpos[other1], currentpos[other2] = first1, second1
env:add_node(currentpos, node) --octant 2
currentpos[other1] = first2
env:add_node(currentpos, node) --octant 3
currentpos[other2] = second2
env:add_node(currentpos, node) --octant 6
currentpos[other1] = first1
env:add_node(currentpos, node) --octant 7
count = count + 8 --wip: broken
--move to next location
delta = delta + (offset1 * 2) + 1
if delta >= 0 then
offset2 = offset2 - 1
delta = delta - (offset2 * 2)
end
offset1 = offset1 + 1
end
currentpos[axis] = currentpos[axis] + 1
end
return count
end
--adds a cylinder at `pos` along the `axis` axis ("x" or "y" or "z") with length `length` and radius `radius`, returning the number of nodes added
worldedit.cylinder = function(pos, axis, length, radius, nodename)
local other1, other2
if axis == "x" then
other1, other2 = "y", "z"
elseif axis == "y" then
other1, other2 = "x", "z"
else --axis == "z"
other1, other2 = "x", "y"
end
local env = minetest.env
local currentpos = {x=pos.x, y=pos.y, z=pos.z}
local node = {name=nodename}
local count = 0
for i = 1, length do
local offset1, offset2 = 0, radius
local delta = -radius
while offset1 <= offset2 do
--connect each pair of octants
currentpos[other1] = pos[other1] - offset1
local second1, second2 = pos[other2] + offset2, pos[other2] - offset2
for i = 0, offset1 * 2 do
currentpos[other2] = second1
env:add_node(currentpos, node) --octant 1 to 4
currentpos[other2] = second2
env:add_node(currentpos, node) --octant 5 to 8
currentpos[other1] = currentpos[other1] + 1
end
currentpos[other1] = pos[other1] - offset2
local second1, second2 = pos[other2] + offset1, pos[other2] - offset1
for i = 0, offset2 * 2 do
currentpos[other2] = second1
env:add_node(currentpos, node) --octant 2 to 3
currentpos[other2] = second2
env:add_node(currentpos, node) --octant 6 to 7
currentpos[other1] = currentpos[other1] + 1
end
count = count + (offset1 * 4) + (offset2 * 4) + 4 --wip: broken
--move to next location
delta = delta + (offset1 * 2) + 1
offset1 = offset1 + 1
if delta >= 0 then
offset2 = offset2 - 1
delta = delta - (offset2 * 2)
end
end
currentpos[axis] = currentpos[axis] + 1
end
return count
end
--adds a spiral at `pos` with size `size`, returning the number of nodes changed
worldedit.spiral = function(pos, size, nodename)
local shift_x,shift_y
sa = spiralt(size)
shift_y = #sa -- "Height" of the Array
local fe = sa[1]
shift_x = #fe -- "Width" of the Array
fe = nil
local count = 0
for x,v in ipairs(sa) do
for y, z in ipairs(v) do
minetest.env:add_node({x=pos.x-shift_x+x,y=pos.y-shift_y+y,z=pos.z+z}, {name=nodename})
count = count + 1
end
end
return count
end
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--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)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local env = minetest.env
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)
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local value = pos[axis]
pos[axis] = value + amount
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env:add_node(pos, node)
pos[axis] = value
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)
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local value = pos[axis]
pos[axis] = value + amount
minetest.env:add_node(pos, node)
pos[axis] = value
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
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--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)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local env = minetest.env
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)
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env:remove_node(pos)
local value = pos[axis]
pos[axis] = value + amount
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env:add_node(pos, node)
pos[axis] = value
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)
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env:remove_node(pos)
local value = pos[axis]
pos[axis] = value + amount
minetest.env:add_node(pos, node)
pos[axis] = value
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
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--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)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local length = pos2[axis] - pos1[axis] + 1
local amount = 0
local copy = worldedit.copy
if count < 0 then
count = -count
length = -length
end
for i = 1, count do
amount = amount + length
copy(pos1, pos2, axis, amount)
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
worldedit.transpose = function(pos1, pos2, axis1, axis2)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local pos = {x=pos1.x, y=0, z=0}
local env = minetest.env
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 extent1 < extent2 then
local node1 = env:get_node(pos)
local value1, value2 = pos[axis1], pos[axis2]
pos[axis1], pos[axis2] = pos1[axis1] + extent1, pos1[axis2] + extent2
local node2 = env:get_node(pos)
env:add_node(pos, node1)
pos[axis1], pos[axis2] = value1, value2
env:add_node(pos, node2)
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
--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
worldedit.flip = function(pos1, pos2, axis)
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)
local env = minetest.env
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 value = pos[axis]
pos[axis] = start - value
local node2 = env:get_node(pos)
env:add_node(pos, node1)
pos[axis] = value
env:add_node(pos, node2)
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 the y axis (supporting 90 degree increments only), returning the number of nodes rotated
worldedit.rotate = function(pos1, pos2, angle)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
angle = angle % 360
local pos = {x=pos1.x, y=0, z=0}
local newpos = {x=0, y=0, z=0}
local offsetx, offsetz
local env = minetest.env
if angle == 90 then
worldedit.transpose(pos1, pos2, "x", "z")
pos1.x, pos1.z = pos1.z, pos1.x
pos2.x, pos2.z = pos2.z, pos2.x
worldedit.flip(pos1, pos2, "z")
elseif angle == 180 then
worldedit.flip(pos1, pos2, "x")
worldedit.flip(pos1, pos2, "z")
elseif angle == 270 then
worldedit.transpose(pos1, pos2, "x", "z")
pos1.x, pos1.z = pos1.z, pos1.x
pos2.x, pos2.z = pos2.z, pos2.x
worldedit.flip(pos1, pos2, "x")
else
return 0
end
return worldedit.volume(pos1, pos2)
end
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--digs a region defined by positions `pos1` and `pos2`, returning the number of nodes dug
worldedit.dig = function(pos1, pos2)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
local env = minetest.env
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:dig_node(pos)
pos.z = pos.z + 1
end
pos.y = pos.y + 1
end
pos.x = pos.x + 1
end
return worldedit.volume(pos1, pos2)
end
--converts the region defined by positions `pos1` and `pos2` into a single string, returning the serialized data and the number of nodes serialized
worldedit.serialize = function(pos1, pos2)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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local pos = {x=pos1.x, y=0, z=0}
local count = 0
local result = {}
local env = minetest.env
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)
if node.name ~= "air" and node.name ~= "ignore" then
count = count + 1
result[count] = pos.x - pos1.x .. " " .. pos.y - pos1.y .. " " .. pos.z - pos1.z .. " " .. node.name .. " " .. node.param1 .. " " .. node.param2
end
pos.z = pos.z + 1
end
pos.y = pos.y + 1
end
pos.x = pos.x + 1
end
result = table.concat(result, "\n")
return result, count
end
--loads the nodes represented by string `value` at position `originpos`, returning the number of nodes deserialized
worldedit.deserialize = function(originpos, value)
local pos = {x=0, y=0, z=0}
local node = {name="", param1=0, param2=0}
local count = 0
local env = minetest.env
for x, y, z, name, param1, param2 in value:gmatch("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)%s+([^%s]+)%s+(%d+)%s+(%d+)[^\r\n]*[\r\n]*") do
pos.x = originpos.x + tonumber(x)
pos.y = originpos.y + tonumber(y)
pos.z = originpos.z + tonumber(z)
node.name = name
node.param1 = param1
node.param2 = param2
env:add_node(pos, node)
count = count + 1
end
return count
end
--loads the nodes represented by string `value` at position `originpos`, returning the number of nodes deserialized
--based on [table.save/table.load](http://lua-users.org/wiki/SaveTableToFile) by ChillCode, available under the MIT license (GPL compatible)
worldedit.deserialize_old = function(originpos, value)
--obtain the node table
local count = 0
local get_tables = loadstring(value)
if get_tables == nil then --error loading value
return count
end
local tables = get_tables()
--transform the node table into an array of nodes
for i = 1, #tables do
for j, v in pairs(tables[i]) do
if type(v) == "table" then
tables[i][j] = tables[v[1]]
end
end
end
--load the node array
local env = minetest.env
for i, v in ipairs(tables[1]) do
local pos = v[1]
pos.x, pos.y, pos.z = originpos.x + pos.x, originpos.y + pos.y, originpos.z + pos.z
env:add_node(pos, v[2])
count = count + 1
end
return count
end