- "Repeat" redirects here. For the block that repeats until a certain condition is true, see Repeat Until () (block).
| Repeat () | |
repeat (10) | |
| Category | Control |
| Type | C |
The Repeat () block is a Control block and a C block. Blocks held inside this block will loop a given amount of times, before allowing the script to continue.
If a decimal is put in, the number is rounded up. Furthermore, when a non-positive number is input, the loop does not run, and if "Infinity" is input, then the block runs forever.[1]
This block has a slight delay, so for optimum speed of execution, Single Frame block stacks should be used.
Example Uses
As this block loops pieces of code, it is widely used for saving space and time. Some common uses are:
- Repeating code — using the Repeat () block (and the Repeat Until () block) can save a lot of scripting.
repeat (10) change [variable v] by (1) next costume if <touching [Wall v]?> then erase all broadcast [Reload v] else stamp end
- Animation — rather than coding each costume change and delay individually, the Repeat () block (with the Next Costume block) can be used. This can reduce unnecessary scripting.
repeat (8) wait (0.05) secs next costume
- Continuous checks — a sprite can continuously move and sense, for example.
repeat (20) change y by (3) if <touching [edge v]?> then change [color v] effect by (75)
- Putting one repeat () block inside another is called "nesting". The total repetitions will be the two repeat () block inputs' product. In this case, the nested loops draw 10 times 10, or 100 dots.
set pen size to (2)
go to x:(-100) y:(100)
repeat (10)
repeat (10)
pen down
pen up
change x by (20)
end
set x to (-100)
change y by (-20)
end
Workaround
- Main article: List of Block Workarounds
This block can be replicated with the following code:
set [counter v] to (0) set [number of times v] to (0) // this is the number of times to repeat repeat until <(counter) = (number of times)> . . . change [counter v] by (1)
