The Powder Toy

jacksonmj

Also, tpt.mousex>188 and tpt.mousex<124 can't both be true at the same time (perhaps tpt.mousex<224 instead?)

And it needs another "end" - one to finish the if statement and one to finish the function.

mniip

uuhh yeah, that too

shutterbug

Hmm... It still says " unexpected symbol near ')' "

Although everything that people have said helped, it does not work :/

mrsalit0s

currently i'm working on an element and could use some help. i need something like this:

if type==tpt.el.sprk(with ctype merc).id then

unfortunately i don't know how to write it correctly :/

vertigo

I need to know how to use tpt.el.----.actas

Thanks in advance

baizuo

Lua help needed: How to get the lower boundary of a free table? See, you can get the upper boundary by table.maxn(), but, which I can't understand why, there's no table.minnn()

Example:

mtx={}

mtx[2]=1

mtx[-7]=42

table.maxn(mtx) --output:2

--how to get the -7?

boxmein

@baizuo (View Post)
Arrays only go from 0 to max-length. In Python at least, array[-x] will do array[len(array)-x+1]
It appears so as in Lua tables also do that.
http://www.lua.org/pil/24.2.3.html

Quoting the Lua documentation:

The lua_gettop function returns the number of elements in the stack, which is also the index of the top element. Notice that a negative index -x is equivalent to the positive index gettop - x + 1.

baizuo

@boxmein (View Post)

Seems...not really.

mniip

There is no special data type for arrays in Lua
An array is considered a table with only numeric keys set, and if they continuously go from 1 to n,
where n is array length.
#t, table.len(t) would only work on arrays, they would return some wrong data if used on non-arrays
table.maxn just iterates over all numeric keys and shows the highest
It could be rewritten as
function table.maxn(t)
local l=0
for i in pairs(t) do
if type(i)=="number" and i>l then
l=i
end
end
return l
end

Just write table.minn function as this and use for your needs

baizuo

@mniip (View Post)

Thanks for your reply

I found few documents, they say that, the table in lua act like this:

arr[k] is similar to normal array if k>0

Any situation else, arr[k] is similar to hash table

Did that means, m[{number}] is part of the array, but m[{Non-number}] is in the hash table part?

For example mtx: (in sequence)(pseudo code)

mtx={

'1':xxx

'2':xxx

...

'9999':xxx

'0'.getHash():xxxx

'-2'.getHash():xxxx (And they are ordered by the hash but not the 'key' itself)

}

So in my case, I can use the function below which you suggested instead:

function table.minn(t)
local min=0
for i in pairs(t) do
if type(i)=="number" and i<min then
min=i
end

end
return min
end

BTW, I quit the free table idea already, it's not a good structure indeed. Using offset variable instead.

Lua Help Thread