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function mesecon:move_node(pos, newpos)
local node = minetest.get_node(pos)
local meta = minetest.get_meta(pos):to_table()
minetest.remove_node(pos)
minetest.add_node(newpos, node)
minetest.get_meta(pos):from_table(meta)
end
--[[ new functions:
mesecon:flattenrules(allrules)
mesecon:rule2bit(findrule, allrules)
mesecon:rule2meta(findrule, allrules)
dec2bin(n)
mesecon:getstate(nodename, states)
mesecon:getbinstate(nodename, states)
mesecon:get_bit(binary, bit)
mesecon:set_bit(binary, bit, value)
mesecon:invertRule(r)
--]]
function mesecon:flattenrules(allrules)
--[[
{
{
{xyz},
{xyz},
},
{
{xyz},
{xyz},
},
}
--]]
if allrules[1] and
allrules[1].x then
return allrules
end
local shallowrules = {}
for _, metarule in ipairs( allrules) do
for _, rule in ipairs(metarule ) do
table.insert(shallowrules, rule)
end
end
return shallowrules
--[[
{
{xyz},
{xyz},
{xyz},
{xyz},
}
--]]
end
function mesecon:rule2bit(findrule, allrules)
--get the bit of the metarule the rule is in, or bit 1
if (allrules[1] and
allrules[1].x) or
not findrule then
return 1
end
for m,metarule in ipairs( allrules) do
for _, rule in ipairs(metarule ) do
if mesecon:cmpPos(findrule, rule) then
return m
end
end
end
end
function mesecon:rule2meta(findrule, allrules)
--get the metarule the rule is in, or allrules
if allrules[1].x then
return allrules
end
if not(findrule) then
return mesecon:flattenrules(allrules)
end
for m, metarule in ipairs( allrules) do
for _, rule in ipairs(metarule ) do
if mesecon:cmpPos(findrule, rule) then
return metarule
end
end
end
end
if convert_base then
print(
"base2dec is tonumber(num,base1)\n"..
"commonlib needs dec2base(num,base2)\n"..
"and it needs base2base(num,base1,base2),\n"..
"which is dec2base(tonumber(num,base1),base2)"
)
else
function dec2bin(n)
local x, y = math.floor(n / 2), n % 2
if (n > 1) then
return dec2bin(x)..y
else
return ""..y
end
end
end
function mesecon:getstate(nodename, states)
for state, name in ipairs(states) do
if name == nodename then
return state
end
end
error(nodename.." doesn't mention itself in "..dump(states))
end
function mesecon:getbinstate(nodename, states)
return dec2bin(mesecon:getstate(nodename, states)-1)
end
function mesecon:get_bit(binary,bit)
bit = bit or 1
local c = binary:len()-(bit-1)
return binary:sub(c,c) == "1"
end
function mesecon:set_bit(binary,bit,value)
if value == "1" then
if not mesecon:get_bit(binary,bit) then
return dec2bin(tonumber(binary,2)+math.pow(2,bit-1))
end
elseif value == "0" then
if mesecon:get_bit(binary,bit) then
return dec2bin(tonumber(binary,2)-math.pow(2,bit-1))
end
end
return binary
end
function mesecon:invertRule(r)
return {x = -r.x, y = -r.y, z = -r.z}
end
function mesecon:addPosRule(p, r)
return {x = p.x + r.x, y = p.y + r.y, z = p.z + r.z}
end
function mesecon:cmpPos(p1, p2)
return (p1.x == p2.x and p1.y == p2.y and p1.z == p2.z)
end
function mesecon:tablecopy(table) -- deep table copy
local newtable = {}
for idx, item in pairs(table) do
if type(item) == "table" then
newtable[idx] = mesecon:tablecopy(item)
else
newtable[idx] = item
end
end
return newtable
end
|
