From Test-Scratch-Wiki

This eng is about the block. For more information on the value this block holds, see Timer (value).

2.0 Timer.png
Category Sensing
Type Reporter

The Timer block is a Sensing block and a Reporter block. The block starts at 0 when Scratch is launched and increases gradually; every second it will have increased by 1. This block is almost always used with the Reset Timer block — usually the timer must be reset at the beginning of a project for the Timer block to hold the right value.

This block can be displayed as a Stage monitor.

Example Uses

— in One Sprite One Script projects, in order to keep it Single Frame (scroll to see the whole script)

when gf clicked
set [PersonX v] to (pick random (-240) to (240))
set [PersonY v] to (pick random (-180) to (180))
  switch to costume [Mouse pointer v]
  go to x: (mouse x) y: (mouse y)
  switch to costume [Hiding person v]
  go to x: (PersonX) y: (PersonY) 
  if <(touching [mouse pointer v]?) and (mouse down?)> then
    say [You found me!] for (2) secs
    stop [this script v]
    if <(timer) > (5)> then
      reset timer
      set [PersonX v] to (pick random (-240) to (240))
      set [PersonY v] to (pick random (-180) to (180))
  • Showing how long a Scratcher is taking in a project (a variable can also be used for this, but it is not as accurate)
when I receive [Start the homework quiz! v]//the variable timer is showing
reset timer
say [Don't forget to look at the timer to see how much time you've taken up!]
  • Checking if an amount of time is acceptable for advancing to another stage of the project
when I receive [new level v]
reset timer

when I receive [level completion v]
if <(timer) < (30)> then
  say [You beat the level! Let's move onto the next one.] for (3) secs
  broadcast [new level v]
  say [You didn't finish in 30 seconds. Maybe next time.] for (3) secs
  stop [all v]
  • Reacting to the length a button is held down by changing a variable faster:
when this sprite clicked //when the button is clicked
reset timer
change [points v] by (1) //first incrementation
wait until <(timer) > (.4)>
repeat until <<not <mouse down>> or <not <touching [mouse-pointer v]?>> //since the button has been held long
change [points v] by (1) //add points faster
wait (.1) secs //wait a small amount of time

Multiple timers

Multiple timers can be simulated with variables which record the time at the beginning of the session.

when gf clicked
reset timer
wait (1) secs
set [timerA v] to (timer)
wait (2) secs
say (join [The old timer is:] (timer)) for (1) secs
say (join [The new timer is:] ((timer) - (timerA))) for (1) secs

See Also

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