Repeat & forever

There are two loops you'll use constantly, and choosing between them is easy once you know the question to ask.

• repeat 10 runs the blocks inside exactly ten times, then moves on to whatever comes next.
• forever runs them over and over until the program stops. Nothing after a forever loop ever runs.

The question to ask: does this have a natural end? Blink three times has an end — use repeat. Watch for the player touching an enemy never ends while the game is on — use forever.

This catches everyone once.

forever
    move 5 steps
say "Finished!"

The sprite moves forever. "Finished!" never appears — the loop never ends, so the script never reaches it.

If you need something to happen after repetition, either use a counted repeat, or put the thing you need inside the forever loop with a condition around it.