[CF-Devel] About sounds

[crossfire-devel at archives.real-time.com]

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       With the change in spells, the sound handling for them sort of broke.
     
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       Before the change, each spell had a unique number.  There was a sound 
     
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      associated with each of those numbers.
     
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       With the spell code, there is no longer a unique number per spell, so 
     
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      there is no way to simply identify a fireball based on the object (you 
     
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      can identify spells by subtype, but firebolt should obviously have a 
     
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      different sound than lightning bolt).
     
     
What about sending the spell's name to the client, so it could play the 
'right' sound? Like 'fireball', 'frostbolt', ...

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       The proper way to deal this is to re-do the sound system.
     
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       the general idea I have is to add a new structure like:
     
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      struct soundlist {
     
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         char    *sound_name;
     
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         uint8 volume
     
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         uint8 play_event
     
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         ... any other flags..
     
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         struct soundlist *next;
     
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      }
     
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       where play_event could be set to things like SPELL_CAST, SPELL_END, 
     
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      APPLY, MOVE, etc..
     
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       Thus when an object is used, check to see if any of the events apply, 
     
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      and if so, send the appropriate sound event to the client (to speed 
     
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      things up, probably add something like a sound_flags to the object 
     
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      structure itself, and have the play_event be a bitmask, so if an object 
     
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      is applied, the code can simply look at the sound_flags, and only if the 
     
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      event there is matched, do we have to bother going through the sound list).
     
     
Seems nice, but I don't see the need for the volume - since it's a 
client setting, not a server one.
And, if we redo the sound structure, could I suggest adding sound 
direction/propagation information too? This way, in the future, clients 
could add doppler effects to sounds, making'em coming towards, stuff 
like that.

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       Believe they are at 11025 sample rate.  I'm not sure if the sounds 
     
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      themselves are stereo, or if the sound module converts them to stereo 
     
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      when played.
     
     
Many thanks.

Nicolas 'Ryo'

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