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In this lecture, we're going to be scripting the next trap in our RB, which are small tripwires that

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can knock you over and cause you to fall to your death.

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So let's get started.

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So we're just going to follow the exact same procedure that we did for the wood break handler is that

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we're going to create a new module script.

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The name for this module script is going to be my tripwire handler.

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And then I'm going to use the same template.

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Once again paste that in here and I'm going to rename this to my tripwire handler.

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And we're only going to need an initialize function because we're going to get the collection service

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and grab all of the tripwires in our game that have the tag of tripwire.

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So I can go ahead and define my tag.

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Which is just the string of tripwire.

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And then we can go ahead and listen to the collection service, get instance added signal, pass my

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tag and then go ahead and get my instance.

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And this is where we're going to use our class to create new tripwire objects.

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Now inside of my RB model two you can see that I have a tripwire in here tagged with tripwire.

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And inside of it it's very simple, just some parts and a detect part that we're going to listen for

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when a player touches and when our player touches it, we're going to trip them over.

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So we can go ahead and create another new module script that's going to be a child of our tripwire handler.

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And we're going to call this one our tripwire class.

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And inside of here.

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Same deal.

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We're going to use our class template and I'm going to name this to tripwire class.

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And I'll just rename this table here to Tripwire Objects.

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Then we can go ahead and get my class inside of my tripwire handler.

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So I'll call it tripwire class.

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And that's equal to require script dot tripwire class.

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So anytime a new tripwire is added into the workspace, we're going to use the tripwire dot new constructor

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and pass that instance.

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Inside our tripwire class, we're going to need a couple services.

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One is going to be the player service.

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And then we're also going to need the sound service.

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And that's because we're going to make a reference to a couple of things.

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First, we want to get the local player which is equal to players dot local player.

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We're going to get the tripwire sound that's inside of the sound service.

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So that's in the SFX folder and it's called tripwire.

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And then we can go ahead and get a random generator.

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So random dot new.

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And then we can also define a constant for this class.

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And I'm going to call this constant cooldown.

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And this is going to represent how long we should wait before the tripwire should be able to trip a

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player again.

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And we're going to set it to like two seconds.

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So that way when the player touches the tripwire, they aren't like tripped multiple times instantaneously,

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right?

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We want to add a little bit of a cooldown.

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Now inside of our constructor we can go ahead and make a reference to our object.

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And then we can go ahead and have that same kind of debounce that we had in our wood break class.

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So we'll call this on cooldown and by default it's going to be equal to false.

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And then we're going to listen for when the detect zone part in our model is touched.

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We'll get that other part.

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And then we can go ahead and check to see if a player touched it.

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So we're going to do players get player from character pass other part dot parent.

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And if there isn't a player, then we're just going to return.

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Otherwise we can just trip ourselves so we can go ahead and add a function to the meta table.

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And we can call this function trip player.

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And because this is going to be run on the client, the only player we can really trip here is the local

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player.

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So you could define a player to be passed to this function.

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Or you could just leave it blank and just trip the local player.

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By default.

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It doesn't really matter whatever you'd like to do, and we're going to be calling this function from

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the lambda function connected to the touched event.

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So we could do self trip player.

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And that means we got to make sure we aren't on a cooldown.

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So if self dot cooldown is true then we're just going to return.

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Otherwise we can set self to on cooldown equal to true.

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And then what we're going to do is we're going to clone that tripwire sound.

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We're going to set the parent of that sound equal to, um, we'll set it to the wire part that's inside

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of our trip wire.

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So that'll be self dot model dot wire.

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And then we'll set play on remove equal to true.

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And then we will destroy this clone.

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So that way it plays a sound.

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And then it cleans it up for us automatically.

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And then we can go ahead and get the humanoid from our player.

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So that would be, uh, local player.

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Dot character and find first child, which is a humanoid.

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And then we'll also get the root part of our players character.

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So that's equal to local player dot character dot humanoid root part.

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And this is because we need to change a state in our humanoid.

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So we'll use the change state function.

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And we want to change it to the humanoid state type of falling down.

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So we trip our player and then to basically have them fall forward, we can apply a small force to the

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root parts assembly linear velocity.

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So root part dot assembly linear velocity.

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That's going to be equal to.

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Um, we'll actually just add it to itself.

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That's going to be equal to the root part dot c frame dot look vector.

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And we can multiply this value by whatever we want.

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So maybe like a value of 20.

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And then what we could do is wait or yield for that cool down to set on, cool down, back to false,

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to trip up ourselves again.

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That's really all we need to do for this particular tripwire trap.

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So any time a tripwire is added to our game because we clone a model and parent it to the workspace,

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then we're going to set up that tripwire and trip our local player when they touch that detect zone

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apart.

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So now we can actually just go and play, test the game and make sure everything works perfectly.

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And let's see if we generate any models that have the tripwire inside of it.

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So I'll walk around a little bit here and I'll catch you when I find one.

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All right.

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Here's one of the tripwire models.

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And if I go and walk and touch it, as you can see, it knocked me forward right on my face.

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And if I go and touch it again, there you go.

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I tripped again, so pretty neat.

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As we walk forward, it trips us on our face.

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And this would be a killer combo if a bridge spawned in front of this tripwire.

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So if you did not see this tripwire and there was a bridge in front of you, you would trip fall on

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those wood.

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Those wood pieces would break and you would fall to your death.

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So a cool little hidden trap that's also a little bit annoying for our players.

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That's all for this lecture, and I'll catch you in the next one.