Disable sound when you touch a button (Mute?)

General
1

I’m trying to figure out how one would make a button that when pressed would mute codea and any sounds it may have! but can’t seem to find anything. Any ideas?

2

I think you will need to do it programmatically and keep a flag for if the user wants sound or not. I have not seen any master values like this, although there may be a metatable somewhere…

3

Codea doesn’t have a mute functionality, but you could override the sound function, and only call the original when a variable is set. Here is an example:


isSoundMuted = false

local _original_sound = sound
function sound(...)
    if not isSoundMuted then
        return _original_sound(...)
    end
end

function setup()
    
    -- play a sound after 1 second
    tween.delay(1, function()
        print("you should hear a sound")
        sound(SOUND_JUMP, 34360)        
    end)
    
    -- after 2 seconds, mute sound and try to play sound again
    tween.delay(2, function()
        isSoundMuted = true
        print("sound is muted, you should hear nothing")
        sound(SOUND_JUMP, 34360)
    end)
    
    -- after 3 seconds, unmute sound and try to play sound again
    tween.delay(3, function()
        isSoundMuted = false
        print("sound is unmuted, you should hear a sound")
        sound(SOUND_JUMP, 34360)
    end)

end

Basically, just set isSoundMuted to true, and any calls to sound() after that will not play a sound. Set it back to false and sounds will play again whenever the sound() function is called.

Note that this will not cancel any sounds that are already playing.

4

Or you could set a variable for the volume and set this to zero when you want to mute


vol=10 --set this to zero to mute as required


sound(SOUND_JUMP, 12902, vol)
5

@West: Ah! I did not know you could do that. In that case, your way is much better.

6

@West I didn’t see the volume explained in the manual, but volume shows when you edit the code. I tried different values just to see what would happen, but there didn’t seem to be any different between .5 and 100.

edit: The range seems to be from 0 to 1.

7

@dave1707 I’ve only really used the volume to play each sound I’m going to use at zero volume in setup to prevent a stutter the first time it is played in the main draw loop.

A wee test of

    sound(SOUND_PICKUP, 2160,ElapsedTime/100)

Indicates some volume control but it does appear to be valid over the range 0-0.5ish

8

Thanks everyone