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In this lecture we're gonna go through the process of playing sound effects and music in our game.

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Before doing anything we need to have some audio files to use in our project.

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You can use any sound files that you have whether it's MP 3 or that wave but you don't have any available.

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I created these two sound files a while back and I'm including them as part of this lecture.

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We have flipped out wave and nature that Argh.

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This is what that wave sounds like in nature.

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The ARG is a music track.

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Sounds like this

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once you have your files ready we can go into Visual Studio and your project and go to the content folder

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and we're going to create a new folder

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for sounds okay.

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Now when you actually put those files we talked about earlier into this folder so I'm going to copy

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these.

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Then I'm going to go to the game project file and we're going to find our content folder.

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We have our new sounds folder that we created and was going to paste those two files in there.

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Next we're going to open up our content that MDG CV or the content pipeline

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we want to go over here to add existing folder These are sounds folder

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okay and you can see a two full are are two files are in there already.

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Now that they're in there we can do A build actually we should save.

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And then we can do A build

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and as long as you see that it's building sound slash blip that wave and building sounds slash nature

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that ARG.

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Then you know that it's fine because these two have built now they're ready to use in our game.

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So in game one let's see yes we need to load the sounds into our code.

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This is really similar to loading any other asset into our code.

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Before we do anything though we need to actually include a new package actually going to put it up here

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using Microsoft that X and A that framework that audio.

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So this package allows us to use sound effects which is what blip that wave is now to love the sounds.

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We're going to load blip that wave first and here's something we need to keep in mind we only need to

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load the sound once even though we might be using sound effect multiple times say for blip that way.

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Let's let's use blip that wave whenever the player shoots a projectile even though they're shooting

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lots projectiles.

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We only need one reference to the sound file.

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We don't need to load it every single time the projectile fires.

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We want these sounds to be available throughout all the classes.

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So we're going to do is create a static class for this public static class.

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We'll call it my sounds

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and we'll start off with public static sound effect is the type and we call this projectile sound and

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that's our declaration.

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This is a nice trick for when you need some data that's available across all your classes or all of

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your files.

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Because now we just add to say my sounds that protect our sound no matter what file we're in we'll be

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able to access it.

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Now let's go down and actually load it will load it right here I guess we just say my sounds that projectile

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sound equals content that load the tape is sound effect and then we need to give it a path

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which is

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sounds.

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Slash bullet.

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And remember you do not put the extension you just say blip not blip that wave.

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So now our Sound Effect is loaded into the game.

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But we need to actually play it at some point.

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And like I mentioned earlier I want this to play whenever the player shoots a projectile.

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So let's go in to play that C.S.

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and they shoot the projectile right here.

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So right afterwards I'm going to do my sounds that projectile sound that play just like that.

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This line will play the sound.

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And now at this point we're ready to test it

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and it works

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now you should know that this play function was play method actually has some optional parameters that

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we can put in there.

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So we'll do this for example one F

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zero point five F and zero f remember that the f just clarifies that this is a float.

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Now what these parameters actually represent This value represents the volume of the sound effect.

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This one represents the pitch for the sound effect.

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And this one represents the pan.

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So to clarify this is a zero to one value zero being completely quiet and one being full volume same

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volume as the sound file itself.

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This is the pitch.

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So here I signified zero point five f.

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That means that the pitch is going to raise by half an octave.

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Every one is an octave.

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So if I did to f that would mean the pitch would rise by two octaves and you can go down to if I did

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if I did negative to f that would mean the pitch drops by two octaves.

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I'm actually going to change it back to zero point five and then pan pandas refers to the focus of the

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left and right speaker.

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And this is a negative one value to one value if it's negative one it's all the way focus on the left

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speaker if it's positive one is all the way focus on the right speaker so having it at zero would make

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it equal in both so if this changes if I save and start the only thing that changes the pitch

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the pitch of each shot is slightly higher now

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using the standard sound effect type is probably all you're going to need for your games.

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However if you need further control of your sounds.

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Look up these sound effect instance class.

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It's similar buffer is a bit more control if you need it.

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Next we're gonna get our background music playing which is a slightly different process.

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We're gonna go back to Game 1 and see us.

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And actually since it's a song it operates a little bit differently.

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We're going to also include a new package and this one is called Microsoft that X made up framework

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dot media MEAA.

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Then we can declare our song public static song.

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We'll call it BMG music.

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And now to load it we'll go down

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to here.

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We'll do my sounds that B G music equals content that load the type of song and same deal we specify

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the path sounds.

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Slash nature.

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Now you might be wondering why is nature to OG considered to be a song while lip that wave is considered

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to be a sound effect.

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And this is actually because of the file type that waves are by default considered sound effects and

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which are considered songs but this is completely customizable within the content pipeline.

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If we click on one of these audio files we can see right down here what is being signified as our processor

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so blip is being considered a sound effect.

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While nature is considered a song but say we wanted blip to be considered a song as well we could use

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this dropdown and change it to a song.

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Then we just have to save and build again.

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And it would work as a song but we actually went as the sound effects we'll just leave it as is now

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that we have music loaded in.

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We can actually play it and for demonstration purposes I'm just gonna play it right here what you do

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is you do media player that play and then you specify the song you want to play which is my sounds that

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BMG music

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and with that are songs you play when we start up

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and it does

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media player also has some other useful methods that we can use such as media player dat stop.

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There is also media player dat pause and media player dat resume.

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You can use of those methods for different functions.

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So if you want to add the level anyone the use to stop you call stop or if maybe you pause the game

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then you could choose media player dat pause and it would pass a song and then you can resume right

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where the song left off which is pretty neat.

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And that about covers everything you need to know about sound effects and songs in modern game.