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Hey there.

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Welcome back and thanks for joining me.

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We're going to continue where we left off with our wave system by adding sound effects, giving money

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to our players when they complete a wave, and highlighting the last alive zombie on the map inside

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of the workspace, I have a folder that was originally within our assets pack called sounds.

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Inside of here are going to be the different sounds I want to play when a wave is going on.

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For example, when we have a wave in progress, we're going to randomly pick one of these sound instances

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to play, such as this song or this song.

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We'll just randomly pick one of these sounds to play during a wave, and when we're in the intermission,

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we're going to be playing this intermission.

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Music.

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When the players win, a game will play this victory sound victory.

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And then when they fail or all the players die and they lose, we'll play this sound instead.

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And then at the start of every single round, before we start spawning zombies on the map, I want to

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go ahead and play this sound.

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So let's go ahead and implement these sounds as well as a couple of other things into our wave system.

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So inside of our game handler, what I'm going to do is I'm going to create a new section first to define

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the different kind of cash rewards I want to give out to players when they complete a wave.

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So I'm going to call this wave Cash Rewards.

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And then we can have a key for each wave and what the reward should be.

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For example, all the players that survive wave one will give them like 20 bucks for wave two.

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We'll also give them 20 bucks for wave three.

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We could do 20 bucks, wave four, wheel up it to 30 bucks for wave five.

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We'll set that to 30 as well.

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Wave six.

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We'll keep it at 30 and then wave seven.

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We're going to set that to 40.

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Wave eight we'll set to 50.

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Wave nine we'll set to 60.

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And then for wave ten we'll set that to 70.

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These are just some random values I'm sitting here.

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You can of course change these to whatever you'd like when you want to go and balance out your game.

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But I'm just going to leave them at these values for now.

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And I'm going to make some variables to refer to the different sounds that are in my workspace.

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So we'll get that sounds folder, which is just equal to workspace dot sounds.

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And then we're also going to get all of the possible music we can play for a wave.

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So we'll call this wave music.

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And that's equal to our sounds folder dot wave music.

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And we're going to get all the children in there.

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And then I want to keep track of what song is currently playing, whether that's the intermission music

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or if that's a song playing during a wave.

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We'll call it current playing music.

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And that's because when I need to fade out the music and switch it to the intermission.

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So, for example, let's say we're in a wave and we're killing zombies, and then we kill all the zombies,

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and then we switch to the intermission stage.

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Well, we want to fade out the music that was playing during the wave and fade it into the intermission

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music, so we can go ahead and create a dedicated function for doing that.

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I'll go down and create a new function.

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And I'm going to call this function fade sound.

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And we're just going to pass a sound instance to this function that we should either fade in or fade

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out.

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And we can check if we need to fade it in or fade it out if the sound is plain.

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So if the sound is plain, then that means we should stop playing the sound.

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But first we need to fade it out.

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So what I'm going to do is I'm going to use the tween service to fade the volume of my sound instance.

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So let's go ahead and get the tween service.

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And I also want to be able to keep track of the original volume of this sound instance that gets passed

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to the function.

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So first we're going to create our tween using the tween service create on our sound.

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We could do a tween info of like three seconds.

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And we want to set the volume equal to zero.

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Now before we start playing this tween we're going to go ahead and set an attribute on our sound instance.

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And we can call it original volume.

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And we're going to set it equal to the sound's original volume.

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That way we can always keep track of it.

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Then we can go ahead and play this fade tween.

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And then I also want this function to yield because let's say in the section where we're starting a

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wave, I want to play that howling sound.

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And before I start spawning zombies on the map, I want to wait for that howling sound to have fully

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faded in.

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So we're going to wait for the completed event for our tween to fire.

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So we'll call wait on it.

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And of course, this is for when we're fading out a sound.

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So when we're fading out, we're going to wait.

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And then once the event fires, then we can go ahead and stop playing the sound.

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Otherwise, if the sound is not playing, we need to fade it in and start playing it.

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So what I'm going to do is I'm going to check if the volume of the sound.

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Is not equal to zero.

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If it's not equal to zero, then we need to go ahead and set an original volume attribute on our sound.

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So sound set attribute original volume.

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We're going to set that to sound dot volume.

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And then we can go ahead and set the sound's volume equal to zero.

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And then we'll play the sound.

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And here we'll use the tween service once more.

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So I'll call this Fade Tween, and we'll create a new tween on the sound instance with a tween info

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dot new of three seconds.

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And we're going to fade the volume to be equal to the sound's original volume.

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So we'll do sound git attribute original volume.

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And then we can go ahead and play this tween, and then we'll wait for this tween to finish.

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So we'll do completed and then we'll yield right here.

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Now, for example, what we can do when we first start our game.

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We want to go ahead and start playing the intermission music that is in our workspace.

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So after we have told the players that we're waiting for someone to join the live team, after a player

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has joined the live team and we start the countdown, then we can go ahead and start playing the intermission

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music.

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So I'm going to set currently playing music equal to our sounds folder.

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Intermission.

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And then I don't want to yield here for the tween to finish fading in this intermission music.

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I want to go straight away to my countdown, so I'll just spawn my fade sound function in a new thread

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and we can just pass our fade sound function.

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And then the other argument we need to provide to our fade sound function is that sound instance.

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So we'll just pass current playing music and this will fade our intermission music to start playing.

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And then what we can go ahead and do is when we want to start a wave, we can play one of the howling

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sounds for the horde.

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So what I'm going to do is I'm going to use my game event, and I'm first going to fire to all my players

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that I want them to update some text on their screen, and I want to tell them that a wave is starting.

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So we'll say wave starting, and then we'll play our howling sound.

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So we'll do sounds folder dot horde howl will play that.

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And then we're going to fade the current playing music.

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So if we were in the intermission stage and now we need to go into the zombie fighting stage, then

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we're going to fade out the intermission music and we're going to wait for that.

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Then what we can go ahead and do is update our currently playing music to a new sound instance.

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So inside of our wave music folder, we can go ahead and pick a random one of those sound instances.

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So we'll do RNG next integer one to the length of wave music.

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And then we're going to fade that music in and we're going to not yield.

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So I'll spawn our fade sound function in a new thread and pass our currently playing music.

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So this will fade the intermission music out, and then we randomly pick a song to play for this wave,

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and then we start playing it.

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Then when we get placed inside an intermission, we need to go ahead and fade out the current playing

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music.

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So if we just came from a wave into the intermission, we need to fade out that wave music and then

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fade in the intermission music again.

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So what we can go ahead and do here is I'm going to not yield.

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So I'll spawn the fade sound function and a new thread.

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And we're going to fade out the current playing music.

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And then we're going to set current playing music equal to the sounds folder dot intermission.

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And then we're going to fade that sound in at the same time.

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So we'll do fade sound and then we'll pass current playing music.

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So this will fade the intermission music back into the game.

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And then what I want to do is when we lose the game, I want to fade out any music that's currently

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playing, whether it's the intermission music or it's the wave music, I want to completely fade it

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out and then I want to play either that failure sound or the victory sound that I showed you earlier.

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So when we lose the game, we want to fade out whatever current music that is playing.

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And then inside of our sounds folder, we want to play that failure sound.

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And then we can copy this and do the exact same thing in the game over win function.

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But this time we want to play our victory sound.

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And I believe that's all the sounds we're going to implement for our wave system.

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Now, the next thing I said I wanted to do is I wanted to award money to players when they complete

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a particular wave.

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So we're going to be using our wave cash rewards, and we're going to go through all the players and

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award them however much money for a particular wave they completed.

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What we're going to go ahead and do is we're going to our function that listens to when a zombie dies.

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And before we set the game state to the intermission state to start a new wave, we should go ahead

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and award all of our players for completing this particular wave.

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So let's go ahead and loop through every single player that's in our game.

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So we're going to do players, get players.

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And what we're going to do is we're going to refer to this player's leaderstats folder, get their money

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and then get the value and increment it by our wave cash rewards for the current wave that we're at.

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So we're going to pass wave and then index this with the current wave.

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So all of our players are going to get the money for the wave they completed.

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Now, the last thing I said I wanted to do is I wanted to create a highlight around the last zombie

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that's alive on our map.

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So if you know what a highlight instance is, if, for example, I add a highlight instance to this

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park bench, it highlights the park bench and you can see the park bench even through other parts or

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through other areas.

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So that way all the players on the map can see where the last zombie is located.

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So what we can go ahead and do is inside of our died event, inside of the function.

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Listening to that event, we can check if the number of zombies that are left is equal to one.

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Then we can go ahead and create a highlight on that last zombie.

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And the way we can do that is by looping through every single zombie that's inside of our zombies workspace

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folder.

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So we'll get all of the children in there.

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And we're going to try to find the zombie in this folder that is alive.

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So we can check this zombie that's in the folder.

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And if there humanoid's health is greater than zero, then that means yes, they are definitely alive.

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So we can go ahead and create a highlight over this zombie.

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So let's go ahead and create a function for doing that.

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I'll call this function.

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Create highlight and we'll get past the parent for this highlight as well as any properties we would

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like to manipulate for this highlight.

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And we'll create a new highlight instance that's equal to instance dot new highlight.

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And then for any of the properties that we get past here, we'll loop through every single property

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and value.

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In the properties and we'll apply that on our highlight.

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And then we can go ahead and set the parent of that highlight equal to that zombie and return highlight

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just in case we need it.

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Now we can go ahead and go back down.

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And when we find our live zombie, we can go ahead and call our create highlight function on this zombie.

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So the parent is going to be the zombie.

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And then one of the properties I want to manipulate is going to be the fill color property.

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I want to go ahead and change this to a different color from the default of red.

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And instead I'm going to pick like a yellowish orange type color, something like that.

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And then I'm actually going to merge these two into an if or else if statement.

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So if the amount of zombies left is equal to one, we'll do this.

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Otherwise, if the number of zombies left is equal to zero and we're still in the wave in progress state,

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then we'll go ahead and move to the next wave.

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So now our wave system should be totally complete.

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We should have sound effects playing like music, and we should highlight the last zombie that's alive.

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And we should also earn money from whenever we complete a wave.

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So to make this easier to test, I'm going to go ahead and decrease these intermission values.

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I'm just going to set them to five seconds so I don't have to wait as long.

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And then we can go and play test our game.

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We'll hit play here.

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Okay.

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Waves are starting in three, two, one.

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Let's go ahead and kill these zombies.

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And.

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Okay.

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Perfect.

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We had the horrid sound play.

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If you heard earlier, we also had our intermission music.

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And now we are having the wave music playing for this first wave.

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So let me go ahead and kill all these guys.

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Okay, we've got three zombies left.

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If I kill these first two, hopefully the last zombie should have a highlight applied around him.

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So once I kill this guy, there you go.

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As you can see, a highlight has been created around the last zombie in our game.

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So I'm still able to see the zombie even through these walls and that notifies all the players.

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Okay, the last zombie is here.

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Let's go kill him.

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And then when I kill this zombie, hopefully I should get awarded some extra money.

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There we go.

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So, as you can see, I got awarded a bunch of extra money for killing that zombie as well as for for

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the wave ending.

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And we already went through the intermission.

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But you did hear the intermission music and now we are in wave two and now I have 20 zombies to fight.

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And now a different wave music is playing.

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Now, if all of these zombies kill me, it should play that.

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Uh.

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We failed.

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There we go.

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We failed.

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Game over.

224
00:15:40,220 --> 00:15:43,550
Zombies win and I can't spawn into the map.

225
00:15:43,880 --> 00:15:46,610
And hopefully all these guys will get cleaned up.

226
00:15:47,180 --> 00:15:47,600
There we go.

227
00:15:47,600 --> 00:15:48,470
They all get deleted.

228
00:15:48,470 --> 00:15:50,060
We're cleaning up the game.

229
00:15:52,330 --> 00:15:55,060
Starting a new game in eight seconds.

230
00:15:55,060 --> 00:16:00,700
So, so far it seems that our wave loop system is working just fine.

231
00:16:02,180 --> 00:16:07,100
When I press this play button, it should start to play the intermission music as you heard.

232
00:16:07,100 --> 00:16:11,510
So let's go hop back in and there's the intermission music playing.

233
00:16:11,510 --> 00:16:15,230
And once this timer is up, it should play the zombie howl.

234
00:16:15,260 --> 00:16:16,190
There we go.

235
00:16:17,240 --> 00:16:20,900
And now we are playing the wave music.

236
00:16:21,290 --> 00:16:23,540
So everything is working well.

237
00:16:24,530 --> 00:16:25,190
All right.

238
00:16:25,190 --> 00:16:27,260
That's all I have for you in this lecture.

239
00:16:27,260 --> 00:16:29,450
And I'll see you in the next one.