Keyboard - if pressed as opposed to if down???

[xHoly-Divinity]

Is there a command in turing that will just get when a button is pressed? E.g. if i press and hold k, using Input.KeyDown, u would get kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk. Now, what im wondering if i can do is if i press and hold k it only does it once until it is pressed again. Thanks

[Windsurfer]

Use an array of booleans and test to see if the position of the key changed since the last time you checked.
Eg. At the start, the whole array would be false.
Start Loop.
Check all keys.
If one key is pressed down AND the corresponding boolean is false, turn the boolean to true and do a command.
If a key is not pressed AND the boolean is true, turn the boolean to false.
Loop back.

[ericfourfour]

I think you are trying to ask if you can stop the program from checking if 'k' is pressed until the 'k' is released. In that case you would simply use a boolean variable. First you would check if k is down and if it is you would check if the k was down last cycle (loop) by checking the boolean variable. If it was not down the previous cycle then you would do the 'k' down stuff. If 'k' was not down you would set the boolean to say that in this cycle the 'k' was not down.

code:

boolean k_down = false loop      get keyboard status      if 'k' is down then           if not k_down then                do k down stuff                k_down = true      else           k_down = false

Or you could use Input.hasch (I think that is it). If it returns true then there is a key in the input buffer. After that call Input.getchar which returns a string that is the current input. Or you can use Input.getch which returns a string with a length of 1.

code:

var input : char loop      if Input.hasch then           input = Input.getchar      end if end loop

[xHoly-Divinity]

Hmmm.... windsurfer that doesn't seem efficient cuzz look

code:

var check : boolean := true var chars : array char of boolean loop Input.KeyDown (chars) if chars (' ') and check = true then check := false put "HELLO!" end if check := true end loop

That still doesn't change it, it processes too quickly. Unless that's not exactly what u mean

[xHoly-Divinity]

Ooooo, u actually brought me upon another command. Input.Flush, i think that's what im lookin for

[Windsurfer]

Perhaps you need to re-read my English code...
This is what i meant, sort of, in terms of your code, in Turing code:

code:

var check : boolean := true var chars : array char of boolean loop     Input.KeyDown (chars)     if chars (' ') and check = true then         check := false         put "HELLO!"     elsif not chars (' ') and check = false then         check := true     end if end loop

[ericfourfour]

windsurfer??? I don't see anyone named windsurfer in this thread.

Anyway, I guess I didn't explain it well enough. I took the time to translate the code to Turing from pseudo.

code:

var down : boolean := false var chars : array char of boolean loop     Input.KeyDown (chars)     if chars ('k') then         if not down then             put "k was pressed"             down := true         end if     else         down := false     end if end loop

And I realized the second one wasn't made that well either. It really should look like this:

code:

var down : boolean := false var input : char loop     if Input.hasch () then         if not down then             input := Input.getchar ()             put "You entered ", input             down := true         end if     else         down := false     end if end loop

[ericfourfour]

Haha. I didn't even see that windsurfer was in this thread.

[Windsurfer]

And yes, you got the idea in your code. Very nicely done. Except... ah never mind, i never believed in those teaching principles anyways.

[xHoly-Divinity]

Nicely done boys, that was quite helpful

[bruized]

Well, I actually had the same question to ask and was going to until I saw this. The thing is I'm not sure I get the gist of what you guys are saying. Well I do but I don't understand how it works like that in the code. I was wondering if you could explain it a little more.

[ericfourfour]

My second example is the easiest to implement. I'll add comments beside what is going on.

code:

var down : boolean := false %Whether there was a key down in the last frame (loop). var input : char %The character input by the user. loop     if Input.hasch () then %Checks if a key is currently being pressed         if not down then %Checks if there were no keys down last frame             input := Input.getchar () %Get the input             put "You entered ", input             down := true %Now the program knows that a key was down this frame.         end if     else %Checks if there were no keys pressed this frame         down := false %Now the program knows no keys were down this frame     end if end loop