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	Add deserializeAlign and various helper functions
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		| @@ -271,3 +271,309 @@ worldedit.deserialize = function(originpos, value) | |||||||
| 	end | 	end | ||||||
| 	return count | 	return count | ||||||
| end | end | ||||||
|  |  | ||||||
|  | -- create a copy of a node added by worldedit.deserializeAligned, then rotate it and replace the original with the correctly aligned copy | ||||||
|  | --   hopefully this function is not required, but is included as it may aid/improve backward compatibility if worldedit.getNewRotation doesn't work properly | ||||||
|  | worldedit.screwdriver_handler = function(pos, axisChange) | ||||||
|  | 	-- This function is hopefully not needed, but is included just in case (for old file formats) | ||||||
|  | 	-- the basis of this is the minetest screwdriver function | ||||||
|  | 	-- it would probably  | ||||||
|  | 	if axisChange == "Z" then return end | ||||||
|  |  | ||||||
|  | 	-- create a copy of the node | ||||||
|  | 	local nodeRot = minetest.get_node({x=pos.x, y=pos.y, z=pos.z}) | ||||||
|  |  | ||||||
|  | 	-- Get ready to set the param2 | ||||||
|  | 	local n = nodeRot.param2 | ||||||
|  |  | ||||||
|  | 	-- screwdriver uses axis direction. not sure why, but leave it there just in case... | ||||||
|  | 	local axisdir = math.floor(n / 4) | ||||||
|  | 	local rotation = n - axisdir * 4 | ||||||
|  | 	-- screwdriver uses a separate function rather than modulus. Not sure why, but this seems to work | ||||||
|  | 	if axisChange == "X" then | ||||||
|  | 		n = axisdir * 4 + ((rotation + 1) % 4) | ||||||
|  | 	elseif axisChange == "z" then | ||||||
|  | 		n = axisdir * 4 + ((rotation + 2) % 4) | ||||||
|  | 	elseif axisChange == "x" then | ||||||
|  | 		n = axisdir * 4 + ((rotation + 3) % 4) | ||||||
|  | 	else | ||||||
|  | 		n = axisdir * 4 | ||||||
|  | 	end | ||||||
|  |  | ||||||
|  | 	-- now replace the node with the copied one | ||||||
|  | 	nodeRot.param2 = n | ||||||
|  | 	minetest.swap_node({x=pos.x, y=pos.y, z=pos.z}, nodeRot) | ||||||
|  | 		 | ||||||
|  | end | ||||||
|  |  | ||||||
|  | -- return the correct orientation for a node within a region being loaded by worldedit.deserializeAligned | ||||||
|  | worldedit.getNewRotation = function(param2, axisChange) | ||||||
|  | 	-- the basis of this is the minetest screwdriver function | ||||||
|  | 	if axisChange == "Z" then return param2 end | ||||||
|  |  | ||||||
|  | 	-- screwdriver uses axisdir. not sure why, but leave it there just in case... | ||||||
|  | 	local axisdir = math.floor(param2 / 4) | ||||||
|  | 	local rotation = param2 - axisdir * 4 | ||||||
|  | 	-- screwdriver uses a separate function rather than modulus. Not sure why, but modulus seems to work without the extra call | ||||||
|  | 	if axisChange == "X" then | ||||||
|  | 		param2 = axisdir * 4 + ((rotation + 1) % 4) | ||||||
|  | 	elseif axisChange == "z" then | ||||||
|  | 		param2 = axisdir * 4 + ((rotation + 2) % 4) | ||||||
|  | 	elseif axisChange == "x" then | ||||||
|  | 		param2 = axisdir * 4 + ((rotation + 3) % 4) | ||||||
|  | 	end | ||||||
|  |  | ||||||
|  | 	-- now return the new param2 | ||||||
|  | 	return param2 | ||||||
|  | end | ||||||
|  |  | ||||||
|  | -- returns true if mod is known, else false. Accepts either a mod, or a mod:node  | ||||||
|  | worldedit.knownMod = function(modName, missingMods) | ||||||
|  | 	local colonLoc = string.find(modName, ":") | ||||||
|  | 	if colonLoc ~= nil then modName = modName:sub(0,colonLoc-1) end | ||||||
|  | 	if not string.find(missingMods, (modName.. ";")) then | ||||||
|  | 		if not minetest.get_modpath(modName) then | ||||||
|  | 			missingMods = missingMods.. modName.. "; " | ||||||
|  | 			print("unknown mod: ".. modName) | ||||||
|  | 			return false, missingMods | ||||||
|  | 		else | ||||||
|  | 			return true, missingMods | ||||||
|  | 		end | ||||||
|  | 	else | ||||||
|  | 		return false, missingMods | ||||||
|  | 	end | ||||||
|  | end | ||||||
|  |  | ||||||
|  | worldedit.minmax = function(posToCheck,posMin,posMax) | ||||||
|  | 	if posToCheck.x < posMin.x then posMin.x = posToCheck.x end | ||||||
|  | 	if posToCheck.y < posMin.y then posMin.y = posToCheck.y end | ||||||
|  | 	if posToCheck.z < posMin.z then posMin.z = posToCheck.z end | ||||||
|  | 	if posToCheck.x > posMax.x then posMax.x = posToCheck.x end | ||||||
|  | 	if posToCheck.y > posMax.y then posMax.y = posToCheck.y end | ||||||
|  | 	if posToCheck.z > posMax.z then posMax.z = posToCheck.z end | ||||||
|  | 	 | ||||||
|  | 	return posMin, posMax | ||||||
|  | 	 | ||||||
|  | end | ||||||
|  |  | ||||||
|  |  | ||||||
|  | --loads the nodes represented by string `value` at position `originpos`, returning the number of nodes deserialized, and locations | ||||||
|  | -- it is essentially an enhancement of worldedit.load with the addition of aligning load to a particular axis, tracking missingmods | ||||||
|  | --   not attempting (and failing) to add nodes to unknown mods, monitoring the bounds of the load region | ||||||
|  |  | ||||||
|  | --   Use .deserializeAlign to replace .deserialize by running with axis="Z":- | ||||||
|  | --worldedit.deserialize = function(originpos, value) | ||||||
|  | --	count = worldedit.deserializeAlign(originpos, value, "Z", false) | ||||||
|  | --	return count | ||||||
|  | --end | ||||||
|  |  | ||||||
|  | --   Use .deserializeAlign to replace .allocate by running with  axis="Z" and runTest=true (as is done internally) | ||||||
|  | --worldedit.allocate(originpos, value) | ||||||
|  | --	count, posMin, posMax, unknownModCnt, missingMods = worldedit.deserializeAlign(originpos, value, "Z", true) | ||||||
|  | --	return 	posMin, posMax, count | ||||||
|  | --end | ||||||
|  |  | ||||||
|  | --contains code based on [table.save/table.load](http://lua-users.org/wiki/SaveTableToFile) by ChillCode, available under the MIT license (GPL compatible) | ||||||
|  | worldedit.deserializeAlign = function(originpos, value, axis, runTest) | ||||||
|  | 	local huge = math.huge | ||||||
|  | 	local posMin = {x=huge, y=huge, z=huge} | ||||||
|  | 	local posMax = {x=-huge, y=-huge, z=-huge} | ||||||
|  | 	local count = 0 | ||||||
|  |  | ||||||
|  | 	if not runTest then | ||||||
|  | 		--make area stay loaded | ||||||
|  | 		-- loop deserializeAlign once to identify posMin and posMax for loading (and holding) the region with voxel_manip | ||||||
|  | 		local count, posMin, posMax = worldedit.deserializeAlign(originpos, value, axis, true) | ||||||
|  | 		local manip = minetest.get_voxel_manip() | ||||||
|  | 		manip:read_from_map(posMin, posMax) | ||||||
|  | 	end | ||||||
|  |  | ||||||
|  | 	local add_node, get_meta = minetest.add_node, minetest.get_meta | ||||||
|  | 	local version = worldedit.valueversion(value) | ||||||
|  | 	local unknownModCnt = 0 | ||||||
|  | 	local missingMods = "" | ||||||
|  |  | ||||||
|  | --	print ("Debug info deserializeAligned: version: ".. version) | ||||||
|  | --	minetest.chat_send_all("Debug info deserializeAligned: version: ".. version) | ||||||
|  |  | ||||||
|  | 	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 | ||||||
|  | 			print ("WorldEdit deserializeAligned: attempting to rotate untested file format version: 1") | ||||||
|  | 			for index = 1, count do | ||||||
|  | 				local entry = nodes[index] | ||||||
|  | 				local pos = entry[1] | ||||||
|  | 				if axis == "x" then | ||||||
|  | 					pos.x, pos.y, pos.z = originpos.x + pos.z, originpos.y - pos.y, originpos.z - pos.x | ||||||
|  | 				elseif axis == "X" then | ||||||
|  | 					pos.x, pos.y, pos.z = originpos.x - pos.z, originpos.y - pos.y, originpos.z + pos.x | ||||||
|  | 				elseif axis == "z" then | ||||||
|  | 					pos.x, pos.y, pos.z = originpos.x + pos.x, originpos.y - pos.y, originpos.z + pos.z | ||||||
|  | 				elseif axis == "Z" then | ||||||
|  | 					pos.x, pos.y, pos.z = originpos.x - pos.x, originpos.y - pos.y, originpos.z - pos.z | ||||||
|  | 				end | ||||||
|  | --				pos.x, pos.y, pos.z = originpos.x - pos.x, originpos.y - pos.y, originpos.z - pos.z | ||||||
|  |  | ||||||
|  | 				posMin,posMax = worldedit.minmax(pos,posMin,posMax)	-- update max and min positions | ||||||
|  |  | ||||||
|  | 				entry[2].param2 = worldedit.getNewRotation(entry[2].param2,axis)	-- adjust param2 (rotation of the node) to match the overall rotation of the load | ||||||
|  | 												-- this has only been tested to work with version == 4 | ||||||
|  | 												-- I'm not sure of the format, so if it wouldn't work then disable and | ||||||
|  | 												-- enable the worldedit.screwdriver_handler after the node has been added | ||||||
|  | 				knownMod, missingMods = worldedit.knownMod(entry[2].name, missingMods)  | ||||||
|  | 				if knownMod then | ||||||
|  | 					if not runTest then add_node(pos, entry[2]) end | ||||||
|  | 				else | ||||||
|  | 					unknownModCnt = unknownModCnt +1 | ||||||
|  | 				end | ||||||
|  | 				-- worldedit.screwdriver_handler({x=pos.x, y=pos.y, z=pos.z}, axis)		-- this would rotate the node after it's been placed (just in case needed for old format) | ||||||
|  | 			end | ||||||
|  | 		else --previous meta flat table format | ||||||
|  | 			print ("WorldEdit deserializeAligned: attempting to rotate untested file format version: 2") | ||||||
|  | 			for index = 1, #nodes do | ||||||
|  | 				local entry = nodes[index] | ||||||
|  | 				if axis == "x" then | ||||||
|  | 					entry.x, entry.y, entry.z = originpos.x - entry.z, originpos.y + entry.y, originpos.z + entry.x | ||||||
|  | 				elseif axis == "X" then | ||||||
|  | 					entry.x, entry.y, entry.z = originpos.x + entry.z, originpos.y + entry.y, originpos.z - entry.x | ||||||
|  | 				elseif axis == "z" then | ||||||
|  | 					entry.x, entry.y, entry.z = originpos.x - entry.x, originpos.y + entry.y, originpos.z - entry.z | ||||||
|  | 				elseif axis == "Z" then | ||||||
|  | 					entry.x, entry.y, entry.z = originpos.x + entry.x, originpos.y + entry.y, originpos.z + entry.z | ||||||
|  | 				end | ||||||
|  | --				entry.x, entry.y, entry.z = originpos.x + entry.x, originpos.y + entry.y, originpos.z + entry.z | ||||||
|  |  | ||||||
|  |  | ||||||
|  | 				posMin,posMax = worldedit.minmax(entry,posMin,posMax)	-- update max and min positions | ||||||
|  | 				entry.param2 = worldedit.getNewRotation(entry.param2,axis)	-- adjust param2 (rotation of the node) to match the overall rotation of the load | ||||||
|  | 											-- this has only been tested to work with version == 4 | ||||||
|  | 											-- I'm not sure of the format, so if it wouldn't work then disable and | ||||||
|  | 											-- enable the worldedit.screwdriver_handler after the node has been added | ||||||
|  |  | ||||||
|  | 				knownMod, missingMods = worldedit.knownMod(entry.name, missingMods)  | ||||||
|  | 				if knownMod then | ||||||
|  | 					if not runTest then add_node(entry, entry) end	--entry acts both as position and as node | ||||||
|  | 				else | ||||||
|  | 					unknownModCnt = unknownModCnt +1 | ||||||
|  | 				end | ||||||
|  | 				-- worldedit.screwdriver_handler({x=entry.x, y=entry.y, z=entry.z}, axis)		-- this would rotate the node after it's been placed (just in case needed for old format) | ||||||
|  |  | ||||||
|  | 				get_meta(entry):from_table(entry.meta) | ||||||
|  | 			end | ||||||
|  | 		end | ||||||
|  |  	elseif version == 3 then --previous list format | ||||||
|  | 		print ("WorldEdit deserializeAligned: attempting to rotate untested file format version: 3") | ||||||
|  | 		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 | ||||||
|  | 			if axis == "x" then | ||||||
|  | 				pos.x, pos.y, pos.z = originpos.x - tonumber(z), originpos.y + tonumber(y), originpos.z + tonumber(x) | ||||||
|  | 			elseif axis == "X" then | ||||||
|  | 				pos.x, pos.y, pos.z = originpos.x + tonumber(z), originpos.y + tonumber(y), originpos.z - tonumber(x) | ||||||
|  | 			elseif axis == "z" then | ||||||
|  | 				pos.x, pos.y, pos.z = originpos.x - tonumber(x), originpos.y + tonumber(y), originpos.z - tonumber(z) | ||||||
|  | 			elseif axis == "z" then | ||||||
|  | 				pos.x, pos.y, pos.z = originpos.x + tonumber(x), originpos.y + tonumber(y), originpos.z + tonumber(z) | ||||||
|  | 			end | ||||||
|  | --			pos.x, pos.y, pos.z = originpos.x + tonumber(x), originpos.y + tonumber(y), originpos.z + tonumber(z) | ||||||
|  | 			node.name, node.param1, node.param2 = name, param1, param2 | ||||||
|  |  | ||||||
|  | 			posMin,posMax = worldedit.minmax(pos,posMin,posMax)	-- update max and min positions | ||||||
|  |  | ||||||
|  | 			node.param2 = worldedit.getNewRotation(node.param2,axis)	-- adjust param2 (rotation of the node) to match the overall rotation of the load | ||||||
|  | 										-- this has only been tested to work with version == 4 | ||||||
|  | 										-- I'm not sure of the format, so if it wouldn't work then disable and | ||||||
|  | 										-- enable the worldedit.screwdriver_handler after the node has been added | ||||||
|  | 			knownMod, missingMods = worldedit.knownMod(node.name, missingMods)  | ||||||
|  | 			if knownMod then | ||||||
|  | 				if not runTest then add_node(pos, node) end | ||||||
|  | 			else | ||||||
|  | 				unknownModCnt = unknownModCnt +1 | ||||||
|  | 			end | ||||||
|  | 			-- worldedit.screwdriver_handler({x=pos.x, y=pos.y, z=pos.z}, axis)		-- this would rotate the node after it's been placed (just in case needed for old format) | ||||||
|  | 			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 = {} | ||||||
|  | 		-- loop through the loaded file, and save each piece of node information to the node table | ||||||
|  | 		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] | ||||||
|  | 			print("Node: name: ".. entry.name) | ||||||
|  |  | ||||||
|  | 			if axis == "x" then | ||||||
|  | 				entry.x, entry.y, entry.z = originpos.x - entry.z, originpos.y + entry.y, originpos.z + entry.x | ||||||
|  | 			elseif axis == "X" then | ||||||
|  | 				entry.x, entry.y, entry.z = originpos.x + entry.z, originpos.y + entry.y, originpos.z - entry.x | ||||||
|  | 			elseif axis == "z" then | ||||||
|  | 				entry.x, entry.y, entry.z = originpos.x - entry.x, originpos.y + entry.y, originpos.z - entry.z | ||||||
|  | 			elseif axis == "Z" then | ||||||
|  | 				entry.x, entry.y, entry.z = originpos.x + entry.x, originpos.y + entry.y, originpos.z + entry.z | ||||||
|  | 			end | ||||||
|  | --			entry.x, entry.y, entry.z = originpos.x + entry.x, originpos.y + entry.y, originpos.z + entry.z | ||||||
|  |  | ||||||
|  | 			posMin,posMax = worldedit.minmax(entry,posMin,posMax)	-- update max and min positions | ||||||
|  |  | ||||||
|  | 			entry.param2 = worldedit.getNewRotation(entry.param2,axis)	-- adjust param2 (rotation of the node) to match the overall rotation of the load | ||||||
|  | 			knownMod, missingMods = worldedit.knownMod(entry.name, missingMods)  | ||||||
|  | 			if knownMod then | ||||||
|  | 				if not runTest then add_node(entry, entry) end		--entry acts both as position and as node | ||||||
|  | 			else | ||||||
|  | 				unknownModCnt = unknownModCnt +1 | ||||||
|  | 			end | ||||||
|  | 		end | ||||||
|  |  | ||||||
|  | 		--load the metadata | ||||||
|  | 		for index = 1, count do | ||||||
|  | 			local entry = nodes[index] | ||||||
|  | 			get_meta(entry):from_table(entry.meta) | ||||||
|  | 		end | ||||||
|  | 	end | ||||||
|  |  | ||||||
|  | 	-- Correct pos1 and pos2 location so markers appear as they would have without rotation (ie when saved with corrected origin) | ||||||
|  | 	if axis == "x" then | ||||||
|  | 		posMin.x, posMax.x = posMax.x, posMin.x | ||||||
|  | 	elseif axis == "X" then | ||||||
|  | 		posMin.z, posMax.z = posMax.z, posMin.z | ||||||
|  | 	elseif axis == "z" then | ||||||
|  | 		posMin.x, posMax.x = posMax.x, posMin.x | ||||||
|  | 		posMin.z, posMax.z = posMax.z, posMin.z | ||||||
|  | 	end | ||||||
|  | 	return count, posMin, posMax, unknownModCnt, missingMods | ||||||
|  | end | ||||||
|   | |||||||
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