Length of key being pressed

KlohaJo

Hi everybody,
is there a way to actually calculate HOW LONG a key is being pressed?
I want a figure in a j'n r game make jump and make the jump height correlate to the length the “arrow up” key is pressed.
Thanks for any hints!
Johannes

awesome-llama

There are lots of ways to do it.

The first thing I think of is using the built-in timer block. You could reset the timer and when the key is released, check what the timer has reached.

... // start this script when the key is pressed
reset timer
wait until <not <key [up arrow v] pressed?>>
say (join (join [key held for ] (timer)) [ secs]) for [2] secs // replace this with your jump code

The maths to convert a time in seconds to a jump height will have to be decided but I can't provide any answer because I don't know what you want it to be. You'll probably also want to have a limit to how high a jump can be, an if-else block is all that's needed for it.

ItsMarlowTime

If you have nothing else being used for the timer, Then awesome-llama’s code should work just fine

If you are using it already, then what you can do is have 3 variables, one named “Time”, another named “TickTime” and another named “HeldTime”
(For a better explanation of what tick is used for, Look into what tick-based projects are)

when Flag clicked
set [Time v] to (0)
other code in this area if necessary, this is only ran once!
forever
broadcast [tick v] and wait
change [Time v] by (Timer)
set [TickTime v] to (Timer)
reset timer
end

and in another block section

when I receive [tick v]
If <key [Up Arrow v] pressed?> then
change [HeldTime v] by (TickTime)
else
if <<not <key [any v] pressed?>> and <not <(HeldTime)=(0)>>> then
Say (join(join[Key Held for ](HeldTime))[ seconds!]
set [HeldTime v] to (0)
end
end

The rest of your project should be able to function like it normally would

Hope this helps

Last edited by ItsMarlowTime (March 8, 2023 18:26:36)

ARandomNumberIs7482

KlohaJo wrote:
Hi everybody,
is there a way to actually calculate HOW LONG a key is being pressed?
I want a figure in a j'n r game make jump and make the jump height correlate to the length the “arrow up” key is pressed.
Thanks for any hints!
Johannes

when green flag clicked
set [len of key press v] to [0]
forever
if <key [any v] pressed?> then
reset timer
wait until <not <key [any v] pressed?>>
set [len of key press v] to (timer)
end
end

Last edited by ARandomNumberIs7482 (March 9, 2023 02:22:31)

KlohaJo

Thanks for all your hints! That is helpful!

LoGaNO_o

KlohaJo wrote:
Hi everybody,
is there a way to actually calculate HOW LONG a key is being pressed?
I want a figure in a j'n r game make jump and make the jump height correlate to the length the “arrow up” key is pressed.
Thanks for any hints!
Johannes

You could do

when [Put your key here...] key pressed
set [Time Pressed] to [0]
repeat until <not <key [Put the same key here...] pressed?>>
wait (0.01) secs
change [Time Pressed] by (0.01)
end

I also have an example project for you if you'd like

https://scratch.mit.edu/projects/817854342/

Last edited by LoGaNO_o (March 13, 2023 13:11:59)

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