PLAY (function): Difference between revisions

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* {{Parameter|remaining&}} is the number of notes/samples/seconds left to play in the background music queue.
* {{Parameter|remaining&}} is the number of notes/samples/seconds left to play in the background music queue.
* {{Parameter|numericExpression&}} can be any numeric expression.
* {{Parameter|numericExpression&}} can be any numeric expression.
* See also the important version dependent notes in the Availability section.
* '''See also the important version dependent notes in the Availability section.'''




Line 30: Line 30:
* In '''QB64''' and early '''QB64-PE''', this was just implemented as stub function which always returned zero.
* In '''QB64''' and early '''QB64-PE''', this was just implemented as stub function which always returned zero.
* Since '''QB64-PE v3.1.0''' the function is fully implemented, but unlike '''QuickBASIC''', in '''QB64-PE''' this function does not return the number of notes left, but the number of audio samples.
* Since '''QB64-PE v3.1.0''' the function is fully implemented, but unlike '''QuickBASIC''', in '''QB64-PE''' this function does not return the number of notes left, but the number of audio samples.
* In '''QB64-PE v3.8.0''', if {{Parameter|numericExpression&}} is a number other than zero, then the function will return the amount of time (seconds) left to play.
* Since '''QB64-PE v3.8.0''', if {{Parameter|numericExpression&}} is a number other than zero, then the function will return the amount of time (seconds) left to play.




{{PageExamples}}
{{PageExamples}}
{{CodeStart}}
{{CodeStart}}
{{Cl|PLAY}} "mb l4cf.l8el4fag.l8fl4gl8agl4f.l8fl4a>cl2dl4dl4c.<l8al4afg.l8fl4gl8agl4f.l8dl4dcl2f>l4dc.<l8al4afg.l8fl4g>dc.<l8al4a>cl2dl4dc.<l8al4afg.l8fl4gl8agl4f.l8dl4dcl1f"
{{Cl|PLAY}} {{Text|<nowiki>"mb l4cf.l8el4fag.l8fl4gl8agl4f.l8fl4a>cl2dl4dl4c.<l8al4afg.l8fl4gl8agl4f.l8dl4dcl2f>l4dc.<l8al4afg.l8fl4g>dc.<l8al4a>cl2dl4dc.<l8al4afg.l8fl4gl8agl4f.l8dl4dcl1f"</nowiki>|#FFB100}}


{{Cl|PRINT}} "Playing tune..."
{{Cl|PRINT}} {{Text|<nowiki>"Playing tune..."</nowiki>|#FFB100}}


{{Cl|DO}}
{{Cl|DO}}
     playLeft& = {{Cl|PLAY (function)|PLAY}}(0)
     smplLeft& = {{Cl|PLAY (function)|PLAY}}({{Text|0|#F580B1}})
     {{Cl|LOCATE}} , 1: {{Cl|PRINT}} "Left to play ="; playLeft&; " ";
    timeLeft& = {{Cl|PLAY (function)|PLAY}}({{Text|1|#F580B1}})
{{Cl|LOOP}} {{Cl|WHILE}} playLeft&
     {{Cl|LOCATE}} {{Text|3|#F580B1}}, {{Text|1|#F580B1}}: {{Cl|PRINT}} {{Text|<nowiki>"Samples left to play ="</nowiki>|#FFB100}}; smplLeft&; {{Text|<nowiki>" "</nowiki>|#FFB100}};
 
    {{Cl|LOCATE}} {{Text|4|#F580B1}}, {{Text|1|#F580B1}}: {{Cl|PRINT}} {{Text|<nowiki>"Seconds left to play ="</nowiki>|#FFB100}}; timeLeft&; {{Text|<nowiki>" "</nowiki>|#FFB100}};
{{Cl|PRINT}}: {{Cl|PRINT}} "And we are done!"
{{Cl|DO...LOOP|LOOP WHILE}} smplLeft&


{{Cl|PRINT}}: {{Cl|PRINT}}: {{Cl|PRINT}} {{Text|<nowiki>"And we are done!"</nowiki>|#FFB100}}
{{Cl|END}}
{{Cl|END}}
{{CodeEnd}}
{{CodeEnd}}

Latest revision as of 16:36, 18 June 2023

The PLAY function returns the number of remaining notes/samples/seconds in the background music queue.


Syntax

remaining& = PLAY (numericExpression&)


Parameters

  • remaining& is the number of notes/samples/seconds left to play in the background music queue.
  • numericExpression& can be any numeric expression.
  • See also the important version dependent notes in the Availability section.


Description

  • This function may be used to detect, if the background music queue is still playing.
  • When there is nothing left to play, then this function returns zero.


Availability

  • v0.934

    v0.934

  • v3.1.0

    v3.1.0

  • Apix.png
  • yes

    yes

  • yes

    yes

  • yes

    yes

  • In QB64 and early QB64-PE, this was just implemented as stub function which always returned zero.
  • Since QB64-PE v3.1.0 the function is fully implemented, but unlike QuickBASIC, in QB64-PE this function does not return the number of notes left, but the number of audio samples.
  • Since QB64-PE v3.8.0, if numericExpression& is a number other than zero, then the function will return the amount of time (seconds) left to play.


Examples

PLAY "mb l4cf.l8el4fag.l8fl4gl8agl4f.l8fl4a>cl2dl4dl4c.<l8al4afg.l8fl4gl8agl4f.l8dl4dcl2f>l4dc.<l8al4afg.l8fl4g>dc.<l8al4a>cl2dl4dc.<l8al4afg.l8fl4gl8agl4f.l8dl4dcl1f"

PRINT "Playing tune..."

DO
    smplLeft& = PLAY(0)
    timeLeft& = PLAY(1)
    LOCATE 3, 1: PRINT "Samples left to play ="; smplLeft&; " ";
    LOCATE 4, 1: PRINT "Seconds left to play ="; timeLeft&; " ";
LOOP WHILE smplLeft&

PRINT: PRINT: PRINT "And we are done!"
END


See also


Navigation:
Main Page with Articles and Tutorials
Keyword Reference - Alphabetical
Keyword Reference - By usage
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