"When button is pressed"...
Author
How do you make it where you can only press a button once then you have to let go to receive action?
Example:
Without one-press action -> Gun shoots non-stop
With one-press action -> Gun only shoots once until you press the button again.
So how do you do this with a similar: if(GetKeyState(VK_KEY) & 0x80
Thank you,
Axesor
You want to keep a previous key state. That way you can figure out what "action" happened to a key.
Example: Say the 'A' key shoots.
Previous state: 'A' key up
Current state: 'A' key down
Event: 'A' key press
Processing:
If weapon is automatic, start shooting
Otherwise, fire single shot
Previous state: 'A' key down
Current state: 'A' key down
Event: 'A' key held down
Processing:
If weapon is automatic, continue shooting
Otherwise, do nothing
Previous state: 'A' key down
Current state: 'A' key up
Event: 'A' key release
Processing:
If weapon is automatic, stop shooting
Otherwise, do nothing
Previous state: 'A' key up
Current state: 'A' key up
Event: 'A' key not pressed
Processing: Do nothing
Hope this helps.
jfl.
Example: Say the 'A' key shoots.
Previous state: 'A' key up
Current state: 'A' key down
Event: 'A' key press
Processing:
If weapon is automatic, start shooting
Otherwise, fire single shot
Previous state: 'A' key down
Current state: 'A' key down
Event: 'A' key held down
Processing:
If weapon is automatic, continue shooting
Otherwise, do nothing
Previous state: 'A' key down
Current state: 'A' key up
Event: 'A' key release
Processing:
If weapon is automatic, stop shooting
Otherwise, do nothing
Previous state: 'A' key up
Current state: 'A' key up
Event: 'A' key not pressed
Processing: Do nothing
Hope this helps.
jfl.
Author
I know this. This is what I am asking. How would you program it though? I think you would use a boolean ,but how would it read if the key is let go?
What about :
Is this what you wanted? a source code sample?
bool oldstate = false;void Update(){bool newstate = (GetKeyState(VK_KEY) & 0x80) != 0;if(!oldstate && newstate) { /*manage key just pressed*/ }if(oldstate && newstate) { /*manage key still pressed*/ }if(oldstate && !newstate) { /*manage key just released*/ }if(!oldstate && !newstate) { /*manage key still released*/ }oldstate = newstate;}Is this what you wanted? a source code sample?
Author
Actually, I just needed clarafication and a small code snippet to fully understand, but thanks. I'll try that.
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