diff options
Diffstat (limited to 'worldedit/functions.lua')
| -rw-r--r-- | worldedit/functions.lua | 707 |
1 files changed, 707 insertions, 0 deletions
diff --git a/worldedit/functions.lua b/worldedit/functions.lua new file mode 100644 index 0000000..2d949c6 --- /dev/null +++ b/worldedit/functions.lua @@ -0,0 +1,707 @@ +--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
+worldedit.set = 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 minetest.registered_nodes[searchnode] == nil then
+ searchnode = "default:" .. searchnode
+ end
+ if minetest.registered_nodes[replacenode] == nil then
+ replacenode = "default:" .. replacenode
+ 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 sphere at `pos` with radius `radius`, composed of `nodename`, returning the number of nodes added
+worldedit.hollow_sphere = function(pos, radius, nodename) --wip: use bresenham sphere for maximum speed
+ local node = {name=nodename}
+ local pos1 = {x=0, y=0, z=0}
+ local full_radius = radius * radius + radius
+ local env = minetest.env
+ for x = -radius, radius do
+ pos1.x = pos.x + x
+ for y = -radius, radius do
+ pos1.y = pos.y + y
+ for z = -radius, radius do
+ if x*x+y*y+z*z >= (radius-1) * (radius-1) + (radius-1) and x*x+y*y+z*z <= full_radius then
+ pos1.z = pos.z + z
+ env:add_node({x=pos.x+x,y=pos.y+y,z=pos.z+z}, node)
+ end
+ end
+ end
+ end
+end
+
+--adds a sphere at `pos` with radius `radius`, composed of `nodename`, returning the number of nodes added
+worldedit.sphere = function(pos, radius, nodename) --wip: use bresenham sphere for maximum speed
+ local node = {name=nodename}
+ local pos1 = {x=0, y=0, z=0}
+ local full_radius = radius * radius + radius
+ local count = 0
+ local env = minetest.env
+ for x = -radius, radius do
+ pos1.x = pos.x + x
+ for y = -radius, radius do
+ pos1.y = pos.y + y
+ for z = -radius, radius do
+ if x*x+y*y+z*z <= full_radius then
+ pos1.z = pos.z + z
+ env:add_node(pos1, node)
+ count = count + 1
+ end
+ end
+ end
+ 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`, composed of `nodename`, 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
+ local step = 1
+ if length < 0 then
+ length = -length
+ step = -1
+ end
+ 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] + step
+ end
+ return count
+end
+
+--adds a cylinder at `pos` along the `axis` axis ("x" or "y" or "z") with length `length` and radius `radius`, composed of `nodename`, 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
+ local step = 1
+ if length < 0 then
+ length = -length
+ step = -1
+ end
+ 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] + step
+ end
+ return count
+end
+
+--adds a pyramid at `pos` with height `height`, composed of `nodename`, returning the number of nodes added
+worldedit.pyramid = function(pos, height, nodename)
+ local pos1x, pos1y, pos1z = pos.x - height, pos.y, pos.z - height
+ local pos2x, pos2y, pos2z = pos.x + height, pos.y + height, pos.z + height
+ local pos = {x=0, y=pos1y, z=0}
+
+ local count = 0
+ local node = {name=nodename}
+ local env = minetest.env
+ while pos.y <= pos2y do --each vertical level of the pyramid
+ pos.x = pos1x
+ while pos.x <= pos2x do
+ pos.z = pos1z
+ while pos.z <= pos2z do
+ env:add_node(pos, node)
+ pos.z = pos.z + 1
+ end
+ pos.x = pos.x + 1
+ end
+ count = count + ((pos2y - pos.y) * 2 + 1) ^ 2
+ pos.y = pos.y + 1
+
+ pos1x, pos2x = pos1x + 1, pos2x - 1
+ pos1z, pos2z = pos1z + 1, pos2z - 1
+
+ end
+ return count
+end
+
+--adds a spiral at `pos` with width `width`, height `height`, space between walls `spacer`, composed of `nodename`, returning the number of nodes added
+worldedit.spiral = function(pos, width, height, spacer, nodename) --wip: clean this up
+ -- spiral matrix - http://rosettacode.org/wiki/Spiral_matrix#Lua
+ av, sn = math.abs, function(s) return s~=0 and s/av(s) or 0 end
+ local function sindex(z, x) -- returns the value at (x, z) in a spiral that starts at 1 and goes outwards
+ if z == -x and z >= x then return (2*z+1)^2 end
+ local l = math.max(av(z), av(x))
+ return (2*l-1)^2+4*l+2*l*sn(x+z)+sn(z^2-x^2)*(l-(av(z)==l and sn(z)*x or sn(x)*z)) -- OH GOD WHAT
+ end
+ local function spiralt(side)
+ local ret, id, start, stop = {}, 0, math.floor((-side+1)/2), math.floor((side-1)/2)
+ for i = 1, side do
+ for j = 1, side do
+ local id = side^2 - sindex(stop - i + 1,start + j - 1)
+ ret[id] = {x=i,z=j}
+ end
+ end
+ return ret
+ end
+ -- connect the joined parts
+ local spiral = spiralt(width)
+ height = tonumber(height)
+ if height < 1 then height = 1 end
+ spacer = tonumber(spacer)-1
+ if spacer < 1 then spacer = 1 end
+ local count = 0
+ local node = {name=nodename}
+ local np,lp
+ for y=0,height do
+ lp = nil
+ for _,v in ipairs(spiral) do
+ np = {x=pos.x+v.x*spacer, y=pos.y+y, z=pos.z+v.z*spacer}
+ if lp~=nil then
+ if lp.x~=np.x then
+ if lp.x<np.x then
+ for i=lp.x+1,np.x do
+ minetest.env:add_node({x=i, y=np.y, z=np.z}, node)
+ count = count + 1
+ end
+ else
+ for i=np.x,lp.x-1 do
+ minetest.env:add_node({x=i, y=np.y, z=np.z}, node)
+ count = count + 1
+ end
+ end
+ end
+ if lp.z~=np.z then
+ if lp.z<np.z then
+ for i=lp.z+1,np.z do
+ minetest.env:add_node({x=np.x, y=np.y, z=i}, node)
+ count = count + 1
+ end
+ else
+ for i=np.z,lp.z-1 do
+ minetest.env:add_node({x=np.x, y=np.y, z=i}, node)
+ count = count + 1
+ end
+ end
+ end
+ end
+ lp = np
+ end
+ 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
+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) --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
+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) --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
+worldedit.stack = function(pos1, pos2, axis, count)
+ 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
+ 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 meta1 = env:get_meta(pos):to_table()
+ local value1, value2 = pos[axis1], pos[axis2]
+ pos[axis1], pos[axis2] = value1 + extent2, value2 + extent1
+ 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
+ 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)
+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 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
+worldedit.rotate = function(pos1, pos2, axis, angle)
+ 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
+
+ if angle == 90 then
+ worldedit.transpose(pos1, pos2, axis1, axis2)
+ worldedit.flip(pos1, pos2, axis2)
+ elseif angle == 180 then
+ worldedit.flip(pos1, pos2, axis1)
+ worldedit.flip(pos1, pos2, axis2)
+ elseif angle == 270 then
+ worldedit.transpose(pos1, pos2, axis1, axis2)
+ worldedit.flip(pos1, pos2, axis1)
+ 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 pos1, pos2 = worldedit.sort_pos(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
+
+--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
+
+--saves the nodes and meta defined by positions `pos1` and `pos2` into a file, returning the number of nodes saved
+worldedit.metasave = function(pos1, pos2, file) --wip: simply work with strings instead of doing IO
+ local path = minetest.get_worldpath() .. "/schems"
+ local filename = path .. "/" .. file .. ".wem"
+ os.execute("mkdir \"" .. path .. "\"") --create directory if it does not already exist
+ local rows = {}
+ local pos1, pos2 = worldedit.sort_pos(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
+ local row = {
+ x = pos.x-pos1.x,
+ y = pos.y-pos1.y,
+ z = pos.z-pos1.z,
+ name = node.name,
+ param1 = node.param1,
+ param2 = node.param2,
+ meta = env:get_meta(pos):to_table(),
+ }
+ table.insert(rows, row)
+ end
+ pos.z = pos.z + 1
+ end
+ pos.y = pos.y + 1
+ end
+ pos.x = pos.x + 1
+ end
+ local err = table.save(rows,filename)
+ if err then return _,err end
+ return count
+end
+
+--loads the nodes and meta from `file` to position `pos1`, returning the number of nodes loaded
+worldedit.metaload = function(pos1, file) --wip: simply work with strings instead of doing IO
+ local filename = minetest.get_worldpath() .. "/schems/" .. file .. ".wem"
+ local rows, err = table.load(filename)
+ if err then return _,err end
+ local pos = {x=0, y=0, z=0}
+ local node = {name="", param1=0, param2=0}
+ local count = 0
+ local env = minetest.env
+ for i,row in pairs(rows) do
+ pos.x = pos1.x + tonumber(row.x)
+ pos.y = pos1.y + tonumber(row.y)
+ pos.z = pos1.z + tonumber(row.z)
+ node.name = row.name
+ node.param1 = row.param1
+ node.param2 = row.param2
+ env:add_node(pos, node)
+ env:get_meta(pos):from_table(row.meta)
+ count = count + 1
+ end
+ return count
+end
\ No newline at end of file |