Array of sounds and looping them

[imnotanerd]

How would i iterate through an array of sounds and loop through them? Here's what I have for audio:

Code: Select all

src1 = {love.audio.newSource("harmoney.mp3"), love.audio.newSource("ghosts-n-stuff.mp3")}

src1:setVolume(1.0)
src1:setLooping(true)

function love.keypressed(key, unicode)
	if key == 'p' then
		src1:pause()
	end
	
	if key == 'r' then
		src1:resume()
	end
	for i = 1, src1.getn(src1) do
		if key == 's' then
			love.audio.play(src1[i])
		end
	end
end

I feel like i'm doing everything wrong. :-/

[tentus]

You need to do some rearranging. Also, I'd avoid src1, since it implies that it is which is isn't. It's not the first source, it all the sources, so I renamed it in the code below.

Code: Select all

function love.load()
	sources = {
		love.audio.newSource("harmoney.mp3"),
		love.audio.newSource("ghosts-n-stuff.mp3")
	}
	for i=1, #sources do
		sources[i]:setVolume(1.0)
		sources[i]:setLooping(true)
		love.audio.play(sources[i])
	end
end

function love.keypressed(key, unicode)
	if key == 'p' then
		for i=1, #sources do
			sources[i]:pause()
		end
	end
	if key == 'r' then
		for i=1, #sources do
			sources[i]:resume()
		end
	end
end

Basically, you need to loop through all of your sources and do the gruntwork to each of them individually. A table can't have a volume, but a sound in a table can.

[imnotanerd]

Great! That fixed it, but now everything is running simultaneously. Is there a love.audio method or Source: method that can check to see which source is playing?

[tentus]

Not that I know of, you'll want to keep another table to tell you that. See what I did below:

Code: Select all

function love.load()
	sources = {
		love.audio.newSource("harmoney.mp3"),
		love.audio.newSource("ghosts-n-stuff.mp3")
	}
	selections = {
		true,
		true
	}
	for i=1, #sources do
		sources[i]:setVolume(1.0)
		sources[i]:setLooping(true)
		love.audio.play(sources[i])
	end
end

function love.draw()
	for i=1, #sources do
		local text = "Source "..i.." is playing"
		if not selections[i] then
			text = "Source "..i.." is not playing"
		end
		love.graphics.print(text, 8, 32 * i)
	end
end

function love.keypressed(key, unicode)
	if key == 'p' then
		for i=1, #sources do
			pauseSource(i)
		end
	end
	if key == 'r' then
		for i=1, #sources do
			resumeSource(i)
		end
	end
	if key == '1' or key == '2' then
		local keyNumber  = tonumber(key)
		if selections[keyNumber] then
			pauseSource(keyNumber)
		else
			resumeSource(keyNumber)
		end
	end
end

function pauseSource(which)
	sources[which]:pause()
	selections[which] = false
end

function resumeSource(which)
	sources[which]:resume()
	selections[which] = true
end

Several things to get from this. One, you can have tables which parallel to each other, so you can reuse key values. Two, it became a good idea to define some functions to do the pausing and resuming. Three, tonumber() is awesome. And four, having a draw function to show us what is happening is also awesome.

If you have any questions about the above code, please ask (what are locals, why does #sources work, etc). I'm not sure how much you know and I don't want to step on any toes, or just hand you solutions that work and you don't know how.

[BlackBulletIV]

Can I ask what that hash (#) before the name of the sources table does? Is it the length of the table?

[thelinx]

Yeah.

[BlackBulletIV]

Thanks.