VoxeLibre/mods/random_struct/init.lua

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local init = os.clock()
random_struct ={}
random_struct.get_struct = function(file)
local localfile = minetest.get_modpath("random_struct").."/build/"..file
local file, errorload = io.open(localfile, "rb")
if errorload ~= nil then
minetest.log("action", '[Random_Struct] error: could not open this struct "' .. localfile .. '"')
return nil
end
local allnode = file:read("*a")
file:close()
return allnode
end
2015-07-04 04:56:02 +02:00
-- World edit function
random_struct.valueversion_WE = function(value)
if value:find("([+-]?%d+)%s+([+-]?%d+)%s+([+-]?%d+)") and not value:find("%{") then --previous list format
return 3
elseif value:find("^[^\"']+%{%d+%}") then
if value:find("%[\"meta\"%]") then --previous meta flat table format
return 2
end
return 1 --original flat table format
elseif value:find("%{") then --current nested table format
return 4
end
return 0 --unknown format
end
random_struct.allocate_WE = function(originpos, value)
local huge = math.huge
local pos1x, pos1y, pos1z = huge, huge, huge
local pos2x, pos2y, pos2z = -huge, -huge, -huge
local originx, originy, originz = originpos.x, originpos.y, originpos.z
local count = 0
local version = random_struct.valueversion_WE (value)
if version == 1 or version == 2 then --flat table format
--obtain the node table
local get_tables = loadstring(value)
if get_tables then --error loading value
return originpos, originpos, 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
local nodes = tables[1]
--check the node array
count = #nodes
if version == 1 then --original flat table format
for index = 1, count do
local entry = nodes[index]
local pos = entry[1]
local x, y, z = originx - pos.x, originy - pos.y, originz - pos.z
if x < pos1x then pos1x = x end
if y < pos1y then pos1y = y end
if z < pos1z then pos1z = z end
if x > pos2x then pos2x = x end
if y > pos2y then pos2y = y end
if z > pos2z then pos2z = z end
end
else --previous meta flat table format
for index = 1, count do
local entry = nodes[index]
local x, y, z = originx - entry.x, originy - entry.y, originz - entry.z
if x < pos1x then pos1x = x end
if y < pos1y then pos1y = y end
if z < pos1z then pos1z = z end
if x > pos2x then pos2x = x end
if y > pos2y then pos2y = y end
if z > pos2z then pos2z = z end
end
end
elseif version == 3 then --previous list format
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 --match node entries
local x, y, z = originx + tonumber(x), originy + tonumber(y), originz + tonumber(z)
if x < pos1x then pos1x = x end
if y < pos1y then pos1y = y end
if z < pos1z then pos1z = z end
if x > pos2x then pos2x = x end
if y > pos2y then pos2y = y end
if z > pos2z then pos2z = z end
count = count + 1
end
elseif version == 4 then --current nested table format
--wip: this is a filthy hack that works surprisingly well
value = value:gsub("return%s*{", "", 1):gsub("}%s*$", "", 1)
local escaped = value:gsub("\\\\", "@@"):gsub("\\\"", "@@"):gsub("(\"[^\"]*\")", function(s) return string.rep("@", #s) end)
local startpos, startpos1, endpos = 1, 1
local nodes = {}
while true do
startpos, endpos = escaped:find("},%s*{", startpos)
if not startpos then
break
end
local current = value:sub(startpos1, startpos)
table.insert(nodes, minetest.deserialize("return " .. current))
startpos, startpos1 = endpos, endpos
end
table.insert(nodes, minetest.deserialize("return " .. value:sub(startpos1)))
--local nodes = minetest.deserialize(value) --wip: this is broken for larger tables in the current version of LuaJIT
count = #nodes
for index = 1, count do
local entry = nodes[index]
local x, y, z = originx + entry.x, originy + entry.y, originz + entry.z
if x < pos1x then pos1x = x end
if y < pos1y then pos1y = y end
if z < pos1z then pos1z = z end
if x > pos2x then pos2x = x end
if y > pos2y then pos2y = y end
if z > pos2z then pos2z = z end
end
end
local pos1 = {x=pos1x, y=pos1y, z=pos1z}
local pos2 = {x=pos2x, y=pos2y, z=pos2z}
return pos1, pos2, count
end
random_struct.deserialise_WE = function(originpos, value)
--make area stay loaded
local pos1, pos2 = random_struct.allocate_WE(originpos, value)
local manip = minetest.get_voxel_manip()
manip:read_from_map(pos1, pos2)
local originx, originy, originz = originpos.x, originpos.y, originpos.z
local count = 0
local add_node, get_meta = minetest.add_node, minetest.get_meta
local version = random_struct.valueversion_WE(value)
if version == 1 or version == 2 then --original flat table format
--obtain the node table
local get_tables = loadstring(value)
if not get_tables 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
local nodes = tables[1]
--load the node array
count = #nodes
if version == 1 then --original flat table format
for index = 1, count do
local entry = nodes[index]
local pos = entry[1]
pos.x, pos.y, pos.z = originx - pos.x, originy - pos.y, originz - pos.z
add_node(pos, entry[2])
end
else --previous meta flat table format
for index = 1, #nodes do
local entry = nodes[index]
entry.x, entry.y, entry.z = originx + entry.x, originy + entry.y, originz + entry.z
add_node(entry, entry) --entry acts both as position and as node
get_meta(entry):from_table(entry.meta)
end
end
elseif version == 3 then --previous list format
local pos = {x=0, y=0, z=0}
local node = {name="", param1=0, param2=0}
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 --match node entries
pos.x, pos.y, pos.z = originx + tonumber(x), originy + tonumber(y), originz + tonumber(z)
node.name, node.param1, node.param2 = name, param1, param2
add_node(pos, node)
count = count + 1
end
elseif version == 4 then --current nested table format
--wip: this is a filthy hack that works surprisingly well
value = value:gsub("return%s*{", "", 1):gsub("}%s*$", "", 1)
local escaped = value:gsub("\\\\", "@@"):gsub("\\\"", "@@"):gsub("(\"[^\"]*\")", function(s) return string.rep("@", #s) end)
local startpos, startpos1, endpos = 1, 1
local nodes = {}
while true do
startpos, endpos = escaped:find("},%s*{", startpos)
if not startpos then
break
end
local current = value:sub(startpos1, startpos)
table.insert(nodes, minetest.deserialize("return " .. current))
startpos, startpos1 = endpos, endpos
end
table.insert(nodes, minetest.deserialize("return " .. value:sub(startpos1)))
--local nodes = minetest.deserialize(value) --wip: this is broken for larger tables in the current version of LuaJIT
--load the nodes
count = #nodes
for index = 1, count do
local entry = nodes[index]
entry.x, entry.y, entry.z = originx + entry.x, originy + entry.y, originz + entry.z
add_node(entry, entry) --entry acts both as position and as node
end
--load the metadata
for index = 1, count do
local entry = nodes[index]
get_meta(entry):from_table(entry.meta)
end
end
return count
end
-- End of world edit deserialise part
-- The call of Struct
random_struct.call_struct= function(pos, struct_style)
-- 1 : City , 2 : Temple Sand
if struct_style == 1 then
random_struct.generatecity(pos)
elseif struct_style == 2 then
random_struct.generate_temple_sand(pos)
end
end
random_struct.generatecity = function(pos)
-- No Generating for the moment only place it :D
local city = random_struct.get_struct("pnj_town_1.we")
local newpos = {x=pos.x,y=pos.y,z=pos.z}
if newpos == nil then
return
end
random_struct.deserialise_WE(newpos, city )
end
random_struct.generate_temple_sand = function(pos)
-- No Generating for the temple ... Why using it ? No Change
local temple = random_struct.get_struct("desert_temple.we")
local newpos = {x=pos.x,y=pos.y-12,z=pos.z}
if newpos == nil then
return
end
random_struct.deserialise_WE(newpos, temple)
end
-- Debug command
minetest.register_chatcommand("spawnstruct", {
params = "",
description = "Spawn a Struct.",
func = function(name, param)
local pos= minetest.get_player_by_name(name):getpos()
if not pos then
return
end
if param == "" or param == "help" then
minetest.chat_send_player(name, "Please use instruction /spawnstruct TYPE")
minetest.chat_send_player(name, "TYPE avaiable : town, temple_sand")
end
if param == "town" then
random_struct.generatecity(pos)
minetest.chat_send_player(name, "Town Created")
end
if param == "temple_sand" then
random_struct.generate_temple_sand(pos)
minetest.chat_send_player(name, "Temple Sand Created")
end
end
})
local time_to_load= os.clock() - init
print(string.format("[MOD] "..minetest.get_current_modname().." loaded in %.4f s", time_to_load))