The 'for' statement, in a nutshell:
'for' statement: Repeats a piece of code through the variables specified.
for i = B,F,S do end
i = The variable.
B - Number where the variable starts.
F - Number where the variable should stop.
S - Number that is added to the variable each repeat.
Example:
for i = 1,3 do
number = i
end
The first time around, 'number' will equal 1. The second time around, 'number' will equal 2. The third time around, 'number' will equal 3. At that point, because 'i' has reached the limit (which is 3), it will stop repeating.
More Examples:
for n = 0,10,2 print(n) end
prints out...
0
2
4
6
8
10
This also works for stepping down...
for i = 9,0,-3 do print(i) end
prints out...
9
6
3
0
The default step is 1...
for p = 1,3 do print(p) end
prints out...
1
2
3
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Tables:
The 'for' statement is often used to do something to each object in a table.
Example:
table = {"A","B","C"}
for i = 1,#table do
print(table[i])
end
prints out...
A
B
C
'#' returns the number of objects in a table, which in the example, is 3.
'[]' gets an individual object of a table. So, in the previous example,
table[2]
returns
"B"
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"GetChildren()" function:
The GetChildren() function returns a table of all abjects located within the object it was called with.
Example:
Say that Bob, Mary, and John, are in your place, and you wanted to get each of their names. You'd start out with the GetChildren() function,
players = game.Players:GetChildren()
if we were to write the table out manually, it would look like this,
players = {"Bob","Mary","John"}
Now you want to print out each of their names. So you'd use a '#' to get the number of objects in the table, and the '[]' to get an individual object in the table,
for n = 1,#players do
print(players[n].Name)
end
This would appear in the output:
Bob
Mary
John
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For futher information, see the following sites:
http://lua-users.org/wiki/ForTutorial
http://lua-users.org/wiki/TablesTutorial
?-Anaminus-?