Author Topic: Key press. (Read 9295 times)

Viruses · « **on:** February 11, 2012, 09:55:21 pm »

How do you check for a SINGLE key press? So you want to check if spacebar has been PRESSED and then RELEASED. So checking for one tap.

Tex Killer · « **Reply #1 on:** February 11, 2012, 10:08:30 pm »

Viruses, you can pull events from the window and check for release events, as the key will be released only once.

Viruses · « **Reply #2 on:** February 12, 2012, 08:37:00 pm »

Could you please be more specific as to HOW i could implement this?

Tex Killer · « **Reply #3 on:** February 12, 2012, 08:50:10 pm »

Read this tutorial:
http://www.sfml-dev.org/tutorials/1.6/window-events.php

If you are using SFML 2.0, use PollEvent instead of GetEvent.

Viruses · « **Reply #4 on:** February 12, 2012, 10:08:59 pm »

I don't get it..

texus · « **Reply #5 on:** February 12, 2012, 11:21:56 pm »

Quote

So checking for one tap.

That is not possible, you can only check press or release separately.

But Tex Killer is completely right: if the key was released then it has been tabbed (or pressed for a while).

If you want to be sure that the key went up and down within a second (so when it was tapped and not held down for a while) then you have to write it yourself.
- Set a boolean to true when a button is pressed.
- Reset a timer.
- When the button is released you check how many time was passed. Less than one second -> key was tapped, more than one second -> ignore it.
- Set the boolean to false.

But yet again: just check for key release and save yourself a lot of trouble.

dotty · « **Reply #6 on:** February 13, 2012, 12:42:14 pm »

Code: [Select]


w_pressed = false

if w is held
	if w_pressed is false
		do something while W is pressed (not held)
		w_pressed = true
	else
		do something while W is held		
else
	w_pressed = false