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Index › Programming Questions & Help › Syntax Questions › switch booleans when M-released
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switch booleans when M-released (Read 274 times)
Al_11
switch booleans when M-released
Mar 17th, 2009, 2:02pm  
  Hi guys! Does somebody knows how to switch state of 2 booleans when MouseReleased? For example:

 void mouseReleased() {

if (boolean1 && !boolean2) {
   boolean1 = false;
   boolean2 = true;
}
if (!boolean1 && boolean2) {
   boolean1 = true;
   boolean2 = false;
}

Maybe there is another way to do this. Please, help.
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sw01
Re: switch booleans when M-released
Reply #1 - Mar 17th, 2009, 2:40pm  
void mouseReleased(){
/* toggle boolean1 and boolean2 */
boolean1 = !boolean1;
boolean2 = !boolean2;
}

if you want the somewhat close logical equivalent of your code, then

void mouseReleased(){
/* toggle boolean1 and boolean2  if not the same*/
if(boolean1 != boolean2){
boolean1 = !boolean1;
boolean2 = !boolean2;
}
}

actually, without an else statement in your original code, this isn't true. it's more like

if(boolean1 != boolean2){
boolean1 = true;
boolean2 = false;
}

but that's probably not intentional.
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cloister
Re: switch booleans when M-released
Reply #2 - Mar 17th, 2009, 5:40pm  
sw01's suggestions are definitely along the lines of what you should probably do, but I should point out that it's impossible to really answer your question because the question is itself vague.  What do you mean by "switch"?

Do you mean "take the values in the two variables, and exchange them so that afterwards, boolean1 holds what boolean2 used to hold, and vice versa"?

Or do you mean "switch each variable to the other logical state?"

If you meant the latter, then you want the first piece of code in sw01's post.  If you want the first (giving each variable the value of the other one) then you want:

void mouseReleased(){
 boolean temp = boolean1;
 boolean1 = boolean2;
 boolean2 = temp;
}
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Al_11
Re: switch booleans when M-released
Reply #3 - Mar 17th, 2009, 9:25pm  
Thank you, guys! Very grateful for quick helpful reply.
I got your posts, the 2nd hepled me...  Smiley
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