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I believe the next fundamental tool we're going to need to script for our game is the player's flashlight.

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When the players are inside of the basement, we need to give them a flashlight that they can pick up

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from the floor right here, and we got to make that flashlight functional.

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We're also going to have that flashlight slowly drain battery, forcing the players to search for new

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batteries throughout the basement.

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So let's go ahead and get started.

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I've attached this model right here next to the lecture that contains the two animations that we're

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going to be using for our flashlight.

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So you can go ahead and open up your animation editor on this rig.

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And you can go ahead and load the animations that are stored inside of here, which is your idle animation

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for the flashlight and the equipped animation for the flashlight.

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And they're pretty basic.

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That's your equip.

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And this is the idle animation which loops forever.

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Once you get those animations uploaded and you got the IDs copied, you're going to want to head into

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server storage and go to the tools folder.

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And you'll go to the flashlight and you'll update them into their respective animations.

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So upload the equip animation in here and the idle animation inside of there.

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From this point, we can go ahead and open up the flashlight server script and the flashlight local

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script.

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Now our flashlight, which we have an example of right here, has several parts inside of it.

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One of these parts is the light part where our light is going to be emanating out of.

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We have an attachment in here that shows the inner circle for the light as well as an outer circle.

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And we also have a ring to cast a neat little shadow in the center to make the inner light and the outer

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diffused light more distinct from each other.

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We also have this surface light restricted to a very small little area, because when it's enabled,

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it makes it look like the flashlight is glowing inside.

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So for example, if I went and disabled this, as you can see, it doesn't look like the flashlight

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is really glowing anymore.

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But if I go back and enable it.

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And we take a look again.

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Now it looks like that our flashlight is glowing more.

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Now we already have a script in here for when the players click this flashlight giver, it'll clone

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the flashlight tool and put it in their backpack.

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And it looks like I named it incorrectly, so I'll just rename it here real quick.

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We'll just call it Flashlight Giver script.

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This is just a very basic script that we don't need to worry about scripting right now.

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It's already completed for us, but the main thing we're going to want to worry about is the flashlight

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service script and the flashlight local script.

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So inside of the local script, the only service we're going to need is the player service.

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And then we can make a whole bunch of references to different variables.

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We'll make a reference to the flashlight itself, which will be the script dot parent of this local

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script.

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We're going to get the guy that's inside of our flashlight, which will display on the screen to show

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the player the current battery.

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So that is inside of the flashlight.

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And since this tool is going to be cloned to their inventory from server storage, we're going to have

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to wait for everything to replicate inside of the tool.

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So we're going to wait for the flashlight guy inside of our flashlight.

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And then we're also going to reference an event inside of the server script of our flashlight, which

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we are going to use to tell the server to, you know, enable the flashlight on its end.

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So clicked event is equal to flashlight.

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And we're going to wait for the flashlight service script, and then we're going to wait for the clicked

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event.

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From this point, we can make a reference to the local player.

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So players dot local player and we're going to get the character of the local player which is equal

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to the local player dot character or local player dot character added.

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And we'll wait for the player's character in case it doesn't exist.

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We're going to get the humanoid of our character, so that's going to be in the character.

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Wait for child humanoid.

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And they're also going to get the animator.

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So in the humanoid we'll wait for child animator.

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And we can go ahead and denote this as an animator.

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And we can go ahead and denote this as the humanoid.

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After that, we can go ahead and load our equip animation so we can call this Equip track.

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And we'll use the animator.

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And we'll load an animation which is inside of our flashlight wafer child animations, and then wait

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for child equip.

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And then we're just going to do the exact same thing.

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But this time we'll have the idle track and we'll wait for the idle animation.

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And since we've already waited for the animations folder up here, we don't have to do it again down

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here.

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So we can just directly index for the animations folder.

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And then we're going to make a reference to the click sound that's inside of the flashlight.

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So there's a click on sound which is in the flashlight.

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We'll wait for child inside of the handle and we'll wait for the on sound.

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And then there's also a click off sound in the same location.

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So flashlight dot handle and we'll wait for the off sound.

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And then we're going to create two booleans to keep track of different things in the flashlight.

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First we're going to have a click debounce to prevent the player from spam turning on and off the flashlight.

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And we're also going to verify that on the server as well.

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So we'll set this to false by default.

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And then we're also going to have a variable to keep track of whether or not the flashlight is on or

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off.

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So this will be called flashlight on.

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And we'll set that to false.

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And then from this point we can have a private function to listen for when the flashlight is activated

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or the tool is clicked.

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So we can call this flashlight activated.

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And then inside of the handler section the different events we're going to want to listen to.

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First off we want to listen for when our flashlight is equipped.

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We'll connect a Lambda function to this.

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We want to listen to.

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When our flashlight is unequipped.

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We'll connect a lambda function to this as well.

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We want to listen on our flashlight when an attribute changes, because inside of our flashlight we

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have two attributes one that represents the current battery of the flashlight and one that represents

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the maximum battery of the flashlight.

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And we're going to want to get attribute change signal.

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And we want to listen for when the current battery attribute changes.

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And when it does we're going to connect a Lambda function to this.

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We'll also want to listen for when our flashlight is activated.

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And we'll connect our flashlight activated function.

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And lastly, we want to listen for when our flashlight is being destroyed.

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And the reason for this is if we ever have a server script that destroys the player's tools, like when

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they get set to the dead team, then we don't want the guy that we set inside of their player guy folder

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to be stuck.

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That's a common problem that people have with a lot of tools, because they forget to listen for when

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the flashlight is being destroyed, when the flashlight is being destroyed, then the reference that

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we made to the guy, we want to go ahead and destroy that guy, no matter where it is, we want to destroy

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it.

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Okay, so when we equip our flashlight, the first thing we can do is we can set the parent of our guy

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equal to the local player dot player guy folder.

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We can go ahead and play our equip track.

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And then we're also going to play our idle track at the exact same time.

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And this is because the animation priority is higher on the equipped track.

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So even though we're playing them at the exact same time, this one will play first.

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And then once this ends, then this animation will take over.

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When our flashlight gets unequipped, we're going to set the g dot parent back into the flashlight.

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We're going to stop our equip track just in case it was playing.

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And then we're also going to stop our idle track from playing.

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Another thing we want to check is whether or not if our flashlight is on.

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So if our flashlight is on, then we want to play the click off sound when we unequip our flashlight.

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So click off sound and play and then we can set flashlight on equal to false.

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Now when the attribute inside of our flashlight changes, then we're going to want to update the guy

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that's on our screen.

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So what we could do is we could refer to our guy, get the frame.

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And there is a text label in there called the current battery label.

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And we're going to set the text equal to the flashlight get attribute current battery.

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And another thing we want to check in here is if our flashlight get attribute current battery is equal

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to zero.

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If it is then we want to set flashlight on equal to false.

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Now the next function we can fill out is our flashlight activated function.

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So when we click we first want to check whether or not our click Debounce is true.

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If it is then we're just going to return out of the function.

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And then we can set click Debounce equal to true.

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And we're going to check if our flashlight is on.

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If our flashlight is on in the player clicked.

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That means we need to turn off our flashlight.

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So flashlight on we're going to set to false.

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And then we're going to play the click off sound.

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Otherwise, if our flashlight is not on, then we want to turn it on.

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So we'll play the click on sound.

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And then we'll also set flashlight on equal to true.

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After that we can yield for like two seconds, because that's the duration we want to have our cool

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down for.

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And then we can set click debounce equal to false.

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Now, something that's very important now is we need to use our click event to let the server know that

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we have activated the tool on our end, so we can do fire server to fire this event.

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Now the activated event also works on the server as well.

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So there's actually two ways you could do it.

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You could either do it through a remote event, or you could just let the server listen to when the

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tool is activated.

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Technically, either way, it works, but we're going to go ahead and try it out with this remote event.

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That way we're just more comfortable with using them.

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Now inside of our server script, we're going to need the player service again.

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And we're also going to need replicated storage.

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We're going to make a reference to the flashlight, which is equal to script dot parent.

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And then we're also going to refer to the clicked event which is a child of our script.

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So script dot clicked.

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We're going to make a reference to the update GUI event.

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And we're going to use this to let the player know that, hey, when they run out of battery, we can

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give them a small message saying you have no more battery left.

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So replicated storage, dot events, dot remotes, dot update guy and then of course we're going to

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have to get the GUI actions enum.

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So we'll require from replicated storage dot modules dot enums dot gui actions enum.

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We're going to make a reference to the inner light inside of our flashlight.

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So that's in the flashlight dot light part.

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It is an attachment in there.

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And we can get the inner light.

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And then we're also going to get the outer light.

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So that's in the flashlight dot light part dot attachment dot outer.

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What we're going to do here is we're going to create a variable called thread.

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We're going to set this to nil for now.

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But when the flashlight gets equipped and while the flashlight is on, we're going to have a loop that

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constantly runs and slowly drains the battery.

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And then when the flashlight either runs out of battery or the tools unequipped, that while loop will

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either cancel or we will cancel the thread itself when the tool gets unequipped.

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We also want a variable to act as a Debounce, so we can call this.

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Click Debounce and we'll set this to false.

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We'll also have a variable to keep track of whether or not the flashlight is on.

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So flashlight on is equal to false.

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And then we're also going to have a variable to keep track of when the flashlight was last clicked.

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We're going to keep a timestamp of that so we can call it last clicked.

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And this is equal to the tick function.

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And because this script is going to run immediately and the player might want to turn on their flashlight

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immediately, we're going to subtract this tick by two seconds.

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Now we can also define some constants for our flashlight.

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First off, we want to have a color for when the flashlight is turned on.

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So the on color is equal to color three dot from RGB.

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And the color that I found best for our flashlight would be 168 on the red, one, 29 on the green,

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and then 67 on the blue.

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We get this yellowish hue.

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And then we also want to define the color for our neon part when the flashlight turns off.

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And that's just going to be black.

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So color three from RGB 000.

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And then we're also going to define the cooldown which is going to be two seconds.

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Now of course we're going to need some private functions.

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One function is going to change the light.

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And we could have a boolean in here like set on to tell this function whether or not we want to change

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the lights to be on or off.

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We'll have a function to listen to our flashlight event, so we'll just call it Flashlight Event.

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And this will get just passed the player that triggered the event.

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And then we're also going to have a function and we can call it drain battery.

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And this is going to contain the while loop that's going to constantly run to drain the battery.

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And inside of the handler section we can listen for when our flashlight is equipped.

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We'll connect a lambda function to that.

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We can listen to when our flashlight is unequipped.

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Connect a function to this as well.

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We want to listen for when our clicked event is fired.

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So on server event will connect.

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Flashlight event.

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And then we're also going to want to listen to when the attribute changes on our flashlight.

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So get attribute change signal.

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And this is going to be the current battery.

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And we can connect a function to this.

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And we're actually not going to need a main section.

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So I'm going to go ahead and delete that.

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Okay, so when our flashlight is equipped, the first thing we want to do is call our drain battery

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function to start draining the battery when you know the flashlight has no battery in it.

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So all we're going to do in here is we're going to have a while loop that runs forever.

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And it'll have a yield of we'll say two seconds.

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So every two seconds we'll deduct one value off of the current battery.

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So it should last a total of 200 seconds with our battery.

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And what we're going to do is we're going to check first of all if our flashlight is on.

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So if our flashlight is not on then we don't want to drain any battery.

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So we'll just continue looping.

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If our flashlight, let's say get attribute current battery is somehow less than or equal to zero,

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then we're also going to just continue looping.

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Otherwise we can set our flashlight the attribute current battery.

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And we'll set it to the flashlight, get attribute current battery and subtract that value by one.

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And that's all we need to do for our while loop.

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So when the flashlight is equipped, we'll use the task dot spawn function to spawn our drain battery

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function in a new thread.

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00:14:44,060 --> 00:14:49,490
And we're going to get that thread returned back to us so we can store it within our thread, uh, variable.

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And that way when our flashlight gets unequipped, we can check if thread exists.

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So if this thread exists, then we can use the task dot cancel function to stop this while loop from

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executing.

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Then we can set thread equal to nil and we'll set flashlight on equal to false.

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And this is where we would use our change light function to turn off the flashlight.

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So in our change light function what we're going to do is we're going to refer to our inner light.

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And we're going to set enabled equal to the boolean.

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We'll do the same thing for the outer light dot enabled equal to the boolean.

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00:15:24,490 --> 00:15:30,070
And then our flashlight light part dot color is going to be equal to.

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We're going to check set on.

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00:15:32,560 --> 00:15:35,890
And then we're going to pass on color.

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00:15:36,430 --> 00:15:43,450
So if set on is true, then the value that gets returned from this and statement is going to be our

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00:15:43,450 --> 00:15:47,320
on color, which means our color property is going to be set to the correct color.

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Or we're going to pass the off color.

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00:15:51,100 --> 00:15:55,630
So basically we remember we talked about this kind of statement for setting variables.

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When set on is equal to true.

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The value that gets set here is going to be our on color.

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Otherwise if set on evaluates to false then the value that's going to be passed.

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Here is our off color.

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00:16:06,850 --> 00:16:10,900
Alrighty, now the next function we can go ahead and fill out is our flashlight event function.

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The first thing we need to check is who exactly fired this event?

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Because an exploiter could be firing the events in other players flashlights, so we want to make sure

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the player firing this event is the same player that is actually having the flashlight equipped.

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00:16:25,090 --> 00:16:30,730
So if the player that fired this event is not equal to and we're going to use the player service and

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get player from character and we can pass the flashlight dot parent, which should be the character

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00:16:36,520 --> 00:16:37,120
model.

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If this player is not equal to the player who has ownership over the flashlight, then we're just going

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to return.

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00:16:43,450 --> 00:16:50,590
The next thing we're going to check is if the tick, the current tick minus our last tick, or the last

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clicked is less than our cooldown.

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So if it's been less than two seconds, then we don't want to do anything because we're still waiting,

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so we'll just return.

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Otherwise we can set last clicked equal to the current tick.

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Then we can check if our flashlight is on.

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So if it is on and the flashlight event gets fired, then we clearly need to turn off the flashlight.

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So flashlight on is going to be set to false.

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And then we're going to use our change light function and pass false.

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Else if.

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Flashlight on is true.

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00:17:22,920 --> 00:17:30,030
And another condition we want to check is the flashlight get attribute current battery is greater than

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zero.

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So if the battery is greater than zero, then we're all good to go.

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And we can turn on the flashlight.

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So flashlight on.

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Equal to true and then change light will pass true to that.

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Otherwise they are going to be out of battery.

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00:17:45,310 --> 00:17:51,100
Because if this condition didn't evaluate to true meaning that we do not have enough battery, then

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we can use the update GUI event and fire to this particular player here.

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So we'll pass the player.

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00:17:57,950 --> 00:18:05,270
Give the guy actions enum of small message and we can give them a message of like you ran out of batteries.

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00:18:06,510 --> 00:18:11,790
And then just for a little bit of added protection, we're also going to check if our click Debounce

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is true.

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If it is, then we're going to return.

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00:18:14,220 --> 00:18:17,010
And then we can set click Debounce equal to true.

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00:18:17,830 --> 00:18:23,530
And then we'll go down, and then we're going to yield for our, uh.

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00:18:23,530 --> 00:18:24,250
What was it?

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00:18:24,250 --> 00:18:27,520
I believe it was the cooldown.

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00:18:27,970 --> 00:18:33,010
And then we're going to set click the balance back to false after that cooldown ends.

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00:18:33,010 --> 00:18:35,410
So we've kind of got double security here.

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00:18:35,410 --> 00:18:40,990
Technically you could just do one or the other, but why not have more security even if it is a little

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00:18:40,990 --> 00:18:41,740
redundant?

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00:18:42,100 --> 00:18:47,530
Now, the last thing we need to fill out is listening to when our current battery attribute changes.

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00:18:47,530 --> 00:18:53,320
So if the current battery attribute changes, we want to check if the flashlight get attribute current

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00:18:53,320 --> 00:18:56,950
battery is less than or equal to zero.

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00:18:56,950 --> 00:18:59,590
If it is, then we need to turn off the flashlight.

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00:18:59,590 --> 00:19:00,880
So flashlight on.

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00:19:00,880 --> 00:19:02,620
We're going to set to false.

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00:19:02,620 --> 00:19:07,120
And then we're going to change light and set that to false as well.

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00:19:07,120 --> 00:19:07,840
Perfect.

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00:19:07,840 --> 00:19:11,020
And our flashlight should actually be complete.

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00:19:11,020 --> 00:19:17,020
So what we could do to test it real quick is I'm going to copy the flashlight and temporarily put it

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00:19:17,020 --> 00:19:18,280
inside of the starter pack.

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00:19:18,280 --> 00:19:20,440
And we can go ahead and play test our game.

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00:19:21,860 --> 00:19:24,800
All right, let's go ahead and test out our flashlight here.

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00:19:24,800 --> 00:19:27,140
So when we hold it out, there we go.

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00:19:27,140 --> 00:19:28,610
We equip the flashlight.

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00:19:28,850 --> 00:19:36,830
And unfortunately, it doesn't look like our torso tilt is quite working right now which is a little

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00:19:36,830 --> 00:19:41,630
strange, but our flashlight should be tilting along with our torso.

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00:19:41,630 --> 00:19:45,500
We'll figure that out in a moment, but if we turn on the flashlight, there we go.

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00:19:45,500 --> 00:19:51,290
We have our bright light, and as you can see, our current battery is draining every two seconds.

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00:19:51,290 --> 00:19:57,080
If we unequip our flashlight, the flashlight turns off and we shouldn't have any battery drain.

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00:19:57,080 --> 00:19:58,490
So remember it was at 95.

318
00:19:58,490 --> 00:20:02,330
So let's wait a couple of seconds and let's go ahead and check again.

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00:20:02,690 --> 00:20:03,230
Perfect.

320
00:20:03,230 --> 00:20:05,150
The current battery is still at 95.

321
00:20:05,150 --> 00:20:10,100
And now we can go ahead and turn our flashlight back on again and look around our map.

322
00:20:11,480 --> 00:20:17,510
So our torso tilt is working, but unfortunately it looks like our other arm is not wanting to follow

323
00:20:17,510 --> 00:20:23,510
along with the tilt of our torso, which is actually kind of strange.

324
00:20:24,320 --> 00:20:29,000
So let me go ahead and figure out why exactly this isn't working, and we can get back to this in a

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00:20:29,000 --> 00:20:29,780
little bit.

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00:20:30,980 --> 00:20:31,370
All right.

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00:20:31,370 --> 00:20:37,040
After a little bit of digging, I actually figured out why our arm was not rotating with the direction

328
00:20:37,040 --> 00:20:38,090
that we were looking.

329
00:20:38,090 --> 00:20:43,670
And the reason was, is that there's an attribute inside of the workspace called retargeting.

330
00:20:43,670 --> 00:20:47,270
And this is a property that you're going to want to disable.

331
00:20:47,270 --> 00:20:53,030
Unfortunately, this property, when enabled, has some confliction when we try to rotate the keyframe

332
00:20:53,030 --> 00:20:55,700
zero of different motor de constraints.

333
00:20:55,700 --> 00:20:59,420
But by disabling this property, we can go ahead and fix that issue.

334
00:20:59,420 --> 00:21:04,730
And now the animations will follow along with the rotation of the different motor 60s that you have

335
00:21:04,730 --> 00:21:06,200
in your player's character.

336
00:21:06,260 --> 00:21:10,910
So all you need to do inside of the workspace, you'll want to go into the properties section and go

337
00:21:10,910 --> 00:21:13,010
down to where it says retargeting.

338
00:21:13,010 --> 00:21:16,520
And you're going to want to change this from default to disabled.

339
00:21:16,640 --> 00:21:21,890
And that should fix your issue with the rotation of the torso of the player.

340
00:21:21,890 --> 00:21:26,810
So other than that, the next thing we need to do is script a system where batteries will spawn around

341
00:21:26,810 --> 00:21:31,850
the map that players can collect to increase the charge of their flashlight when they are low or running

342
00:21:31,850 --> 00:21:32,720
out of batteries.

343
00:21:32,720 --> 00:21:33,860
So I'll go ahead.

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00:21:33,860 --> 00:21:35,210
See you in the next lecture.