Scratch

there already is timer block in the sensing section.
try

when i receive 
reset timer 
wait until (timer = 120)
do stuff

I would assume your way should work, I see no reason it shouldn't.

when gf clicked
set [clock v] to (120)
repeat until <(clock) < (1)>
    wait (0.99) secs
    change [clock v] by (-1)
end
broadcast [timer finished v]

ScratchBotEater wrote:

Hi, I made a great game called Scratch Snatch! It WAS going to be my first project, but then scratch died down, and I had to restart the WHOLE thing! *gives evil eye*    Anyways, when I was doing it again, there were some glitches, I fixed them. Then I had 2 scripts left. Yes, you heard me right.  But then, unfortunately  I couldn't figure out how I made a timer. This is what I did, but then it didn't work!  I did: When I receive [broadcast], Set Remaining Seconds too 120, [forever] Wait one second, Change Remaining seconds my -1, [end forever.] Is it wrong in any way?

Maybe
[When GF clicked]
[Set (variable) to 120]
[--Repeat until (<variable=0>)]
[Change (variable) by 1]
[Wait (1) second]
--
forever
  [--if (variable=0)]
   [Stop all]
  --
--

I  hope that helps, even though that's unclear. I forget/ don't know how to do the blocks.

CheeseMunchy wrote:

Quite simple really.

when gf clicked
set (time) to [120]
repeat until <(time) = [0]>
change (time) by [-1]

No, That would be 3 seconds in Scratch player, 4 seconds in java and 0.0012 seconds in flash. You need a

wait (1) secs

Or you could make it complex. (Example in my Fireworks Game lists and player sensor)

Last edited by Splodgey (2012-02-14 08:34:08)

I have a problem. I have a game I'm trying to perfect: Adventure Mormon. It needs a timer. I've made a variable "time" but I need to know how to pause it when you hit the pause button. How would I do that? I already have 2 broadcasts: Pause and Resume. What now?

Magnie wrote:

jimyandboby13 wrote:

I have a problem. I have a game I'm trying to perfect: Adventure Mormon. It needs a timer. I've made a variable "time" but I need to know how to pause it when you hit the pause button. How would I do that? I already have 2 broadcasts: Pause and Resume. What now?

when gf clicked
set [time v] to (120)
set [paused? v] to (0)
repeat until <(time) = (0)>
    wait until <(paused?) = (0)>
    wait (0.99) secs
    change [time v] by (-1)
end

Instead of broadcasts for pausing and resuming, you should use variables. For the pause and resume button, you could add/replace it with this script:

(Modified from here.)

when gf clicked
set [paused? v] to (0)
forever
    wait until <<touching [mouse-pointer v]?> and <mouse down?>>
    set [paused? v] to ((1) - (paused?))
    wait until <<not <touching [mouse-pointer v]?>> or <not <mouse down?>>>

There is one problem with that. If they pause when it is waiting 0.99 seconds it won't pause. It could be fixed like this, but it is a little complex:

when gf clicked
set [player v] to [Scratch Player]
broadcast [((0)/(0))]
set [player v] to [Java]
Obsolete!
set [player v] to [flash]

See the wiki for more information on "online/offline detection"

when gf clicked
wait (0.1) secs
set [timer counter v] to [0]
set [time v] to [120]
if <(player) = [scratch player]>
 repeat until <(time) = [0]>
  wait until <(paused?) = (0)>
  change [timer counter v] by (1)
  if <(timer counter) = [40]>
   change [time v] by (-1)
   set [timer counter v] to [0]
  end
 end
else
 if <(player) = [java]>
  repeat until <(time) = [0]>
   wait until <(paused?) = (0)>
   change [timer counter v] by (1)
   if <(timer counter) = [30]>
    change [time v] by (-1)
    set [timer counter v] to [0]
   end
  end
else
 repeat until <(time) = [0]>
  wait until <(paused?) = (0)>
  change [timer counter v] by (1)
  if <(timer counter) = [100000]>
   change [time v] by (-1)
   set [timer counter v] to [0]
  end
 end

Looking at it now it seems way to long. There is another way. That isn't quite so long. It uses the first script too but slightly differently:

when gf clicked
set [player v] to [1]
broadcast [((0)/(0))]
set [player v] to [2]
Obsolete!
set [player v] to [3]

add [40] to [player speed v]
add [30] to [player speed v]
add [100000] to [player speed v]

Those must be in a list.

when gf clicked
wait (0.1) secs
set [timer counter v] to [0]
set [time v] to [120]
repeat until <(time) = [0]>
 wait until <(paused?) = [0]>
 change [timer counter v] by (1)
 if <(timer counter) = (item (player) of [player speed v])>
  change [time v] by (-1)
  set [timer counter v] to [0]
 end
end

I would use this method just to make it (almost) perfect timing.

Last edited by Splodgey (2012-02-18 03:30:31)

Magnie wrote:

Actually Splodgey, it will pause even during the wait (0.99) secs.    Or at least, when you press the pause button during the wait, then it'll finish the wait, decrease by one then it'll stop.

Though I guess this would be better:

when gf clicked
set [time v] to (120)
set [paused? v] to (0)
repeat until <(time) = (0)>
    change [time v] by (-1)
    wait (0.99) secs
    wait until <(paused?) = (0)>
end

I just switched the change, wait, and wait-until blocks around. So while it's "waiting" and if the user pauses the timer during the wait, then it won't decrease the time.

But then it won't wait one second before the time at 120 decreases by 1 at the first. So either you need to replace 120 with 121 or put a "wait (0.99) secs" before the repeat until.

You put a stop script inside the forever block, right? If so, that's your problem.