PLAY (function): Difference between revisions
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* 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. | ||
* | * 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}} | ||
smplLeft& = {{Cl|PLAY (function)|PLAY}}({{Text|0|#F580B1}}) | |||
{{Cl|LOCATE}} , 1: {{Cl|PRINT}} " | timeLeft& = {{Cl|PLAY (function)|PLAY}}({{Text|1|#F580B1}}) | ||
{{Cl| | {{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|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}} | ||
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
v3.1.0
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