I stumbled upon this in a Roblox wiki or something. What does it mean?
array[16][12] of 16-bit intergers
✓ ANSWER ACCEPTED
Unknown Table Stuff?
2 answers
✓ Accepted answer
Brackets are the "actual" access operators in Lua.
The dot . access operator is typically used in place of string-indexes with the brackets:
Table.thing
--is equivalent to
Table["thing"]
What that code is doing is using the array Table, and accessing the 16th member of that, which is also a Table, and then accessing the 12th member of it.
2 comments
0
So how do you create tables inside of tables? Just bricks[1] = colors{} somthing like that?
0
You have to think of Tables as any other data type. How do you set a variable to a number? How do you set a variable to a Table? How do you set a Table member to a number?
-- Simple version:
local array = {}
array[16] = {}
array[16][12] = 255
-- Common version:
local array = {}
for n=1,16 do
array[n] = {}
end
array[16][12] = 255
-- Simple type declaration:
Array2 = {
new = function(rows,columns)
local array = {}
for x=1,rows do
array[x] = {}
for y=1,columns do
array[x][y] = 0
end
end
return array
end,
}
array = Array2.new(16,12)
array[16][12] = 255
By the way, a "array[16][12]" is a 2-dimensional array (grid) with the dimensions 16,12 (Like the code above shows: A table with 16 elements, with the value of every element set to another table with 12 elements, with the value of every element set to 0. Lua however doesn't make a difference between ints, float, doubles or bytes. In Lua these are all called "numbers", and thus a array[16][12] of 16-bit integers is basicly a array[16][12] of numbers, with all default values set to full numbers between 0 and 65535, and assuming you will not set any value that's not a full number or is below 0/above 65535.
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2 comments
Whats the wiki link? It should tell you what kind of table it is.
I actually just went back and searched for it and it was in a script. Heres the line(it goes on to define things in the table, but I can not figure out based on what its defining): Cells[x][y] = {