NewsForumsCodeLogsGallerySpecsSearch

How do I use the same key twice in the same game?

BlitzPlus Forums/BlitzPlus Programming/How do I use the same key twice in the same game?

indietom(Posted 2014) [#1]
Hi!

I've always made small games with blitzPlus but I recently started a bigger project so I have to use the same key(the keyHit function to be more specific) twice but only the first if statement gets executed.

I've tried putting flushkeys() at the end of every if statement but it doesn't help.

Thanks for any help


RemiD(Posted 2014) [#2]
indeed only the first keyhit seems to be taken into account :


what i would do :


(this is a blitz3d code...)


GfK(Posted 2014) [#3]
Ugly untested code but you get the idea - test once per loop, store the value, compare against the stored value multiple times:
Global KEY_LEFT:Int = whatever key code you want
Global KEY_RIGHT:Int = whatever key code you want
Global KEY_LEFT_PRESSED:Byte
Global KEY_RIGHT_PRESSED:Byte

Repeat
   Cls
   ParseKeys()
   If KEY_LEFT_PRESSED
      'do something
   EndIf
   If KEY_RIGHT_PRESSED
      'do something else
   EndIf
   'Draw Stuff
   Flip
Forever

Function ParseKeys()
   KEY_LEFT_PRESSED = False
   KEY_RIGHT_PRESSED = False
   If KeyHit(KEY_LEFT)
      KEY_LEFT_PRESSED = True
   EndIf
   If KeyHit(KEY_RIGHT)
      KEY_RIGHT_PRESSED = False
   EndIf
End Function



Floyd(Posted 2014) [#4]
Most people treat KeyHit() as True/False, meaning key was or was not hit. But what it really reports is the number of times the key was hit since the previous call to KeyHit().

Graphics3D(640,480,32,2)

; Hit spacebar rapidly, observe keyhit values greater than 1.

While Not KeyHit(1)  
	Print KeyHit(57)
	Delay 500
	Flip()
Wend