Difference between revisions of "Load.sound"

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load.sound(n);
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The '''load.sound''' command loads a [[sound]] resource on to the [[memory heap]].
  
Loads into memory the SOUND resource number n, i.e. Sound(n). Note that there is no way of loading a sound with indirection. The command load.sound.v does not exist.
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== Syntax ==
  
 
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load.sound([[number|byt]] SOUNDNUM);
== See Also ==
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== Remarks ==
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This command loads [[sound]] '''SOUNDNUM''' onto the [[memory heap]]. [[Sound]] resources must be loaded before being [[played]]. If you try to play a sound before it is loaded, AGI will raise [[trappable error #9]].
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In early [[versions]] of AGI, there was no way to unload a [[sound]] resource once it was loaded. Beginning with [[version 2.936]], AGI included a '''[[discard.sound]]''' command that allows a programmer to unload unneeded [[sound]] resources, but '''only in non-PC versions of AGI'''; in the PC version, this command points to a null function that doesn't do anything, and in fact will usually cause AGI to crash; see the '''[[discard.sound]]''' command for details.
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AGI adds a script entry to the [[script stack]] each time a [[sound]] resource is loaded.
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== Possible Errors ==
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If you attempt to load a [[sound]] that does not exist, AGI will raise a [[runtime error]] and crash.
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== Example ==
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<div class="CodeBlockHeader">Code:</div>
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<syntaxhighlight lang="agi">
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[ assume the resource ID for a sound is 'Theme'
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load.sound(Theme);
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sound(Theme, f55);
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if(isset(f55))
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  {
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  reset(f55);
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  print("Thank you for listening to our theme song!");
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  }
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</syntaxhighlight>
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== Technical Information ==
  
* [[AGI Specifications: Chapter 4 - The LOGIC Language#load.sound|AGI Specifications: Chapter 4 - The LOGIC Language load.sound]]
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{| border="1" cellpadding="2"
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| style="background-color: #efefef" width="200" | '''Required Interpreter Version:'''
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| width="175" | Available in all AGI versions.
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|-
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| style="background-color: #efefef" | '''Byte-Code Value:'''
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| 98 (0x62 hex)
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|}
  
&nbsp;
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== See Also ==
  
[[Category:Sound Commands]]
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[[Sound Commands]]<br />
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[[Memory Management]]<br />
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[[AGI Scripts]]<br />
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[[Category:Commands]]<br />

Latest revision as of 20:34, 10 April 2019

The load.sound command loads a sound resource on to the memory heap.

Syntax

load.sound(byt SOUNDNUM);

Remarks

This command loads sound SOUNDNUM onto the memory heap. Sound resources must be loaded before being played. If you try to play a sound before it is loaded, AGI will raise trappable error #9.

In early versions of AGI, there was no way to unload a sound resource once it was loaded. Beginning with version 2.936, AGI included a discard.sound command that allows a programmer to unload unneeded sound resources, but only in non-PC versions of AGI; in the PC version, this command points to a null function that doesn't do anything, and in fact will usually cause AGI to crash; see the discard.sound command for details.

AGI adds a script entry to the script stack each time a sound resource is loaded.

Possible Errors

If you attempt to load a sound that does not exist, AGI will raise a runtime error and crash.

Example

Code:
[ assume the resource ID for a sound is 'Theme'
load.sound(Theme);
sound(Theme, f55);
if(isset(f55)) 
  {
  reset(f55);
  print("Thank you for listening to our theme song!");
  }

Technical Information

Required Interpreter Version: Available in all AGI versions.
Byte-Code Value: 98 (0x62 hex)

See Also

Sound Commands
Memory Management
AGI Scripts