Minetest-WorldEdit/functions.lua

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2012-07-14 03:46:33 +02:00
--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
--fills a region defined by positions `pos1` and `pos2` with `nodename`, returning the number of nodes filled
worldedit.fill = function(pos1, pos2, nodename)
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
--copies the region defined by positions `pos1` and `pos2` along the `axis` axis by `amount` nodes, returning the number of nodes copied
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, node)
local value = pos[axis]
pos[axis] = value - amount
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, node)
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
--moves the region defined by positions `pos1` and `pos2` along the `axis` axis by `amount` nodes, returning the number of nodes moved
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, node)
env:remove_node(pos)
local value = pos[axis]
pos[axis] = value - amount
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, node)
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
--duplicates the region defined by positions `pos1` and `pos2` along the `axis` axis `count` times, returning the number of nodes stacked
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
--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 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