All language subtitles for lesson101

Rights of the enemies can hurt player but the player

Really hurt the enemy right it's not really fair system where we can hurt

The enemies

Alright so let's first just create a variable called health

Pretty anime

We have a private integer called health and by the fault it's going to be 100

And then we can have a private integer Max health

That's going to be 100 as well ok is very somewhere to a new player here

Can you play a has a

Health and also a Max health value

The same is true for enemies here

Ok

So what we're going to do here

Is Russia going to create something called

Hitbox

And hitbox is going to be

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On a player you can also put them on enemies as well but in this case we're just going to put it on our player

And what is allows us to do

Is create an invisible field in front of the player

Hurt enemies if it touches those enemies

Usually you will activate this by clicking your mouse button or may be pressing I don't know x on you

Keyboard in activate that invisible field ok

What we're going to do is Russia going to create something called

An attack fox some people will call it a hitbox some people might even colder hurtbox and

I like that word because it implies that maybe the players getting hurt as opposed to the player hurting an enemy

Play Like a word attack box I think that's a really specific word

How to spell understand what is saying actually does ok

So I'm going to do is just a simple box Collider 2D

And we're just going to say is Trigger is true

Now I'm going to do is

Simply

Dragging over here to about 1 position of 1

Maybe we should put it right snow against the player that looks good so maybe .8 instead

Ok

We have this attack box

So the idea is that

When I press a key on the keyboard so the attack key or right click the mouse this will appear

Inherit the enemies that touch this box

So this could be swinging a sword or punching in this attack box is invisible

The way for us to you have an idea of where the enemy has to be to get hurt when they're in front of the player

So just be clear let's go ahead and just add a Sprite renderer of this

I can really see what's going on and

Looks like we don't have a square Sprite so just going to level one here and I just create

Google Pixel that we can use

Actually like to have

A single spray called white pixel in my games so that I can use it wherever I need to

To use that white pixel

On our attack box

What's an import here there we go

Dragon in there

Now we have a box Collider that's way bigger than my pixel so what happens is you can actually remove the box Collider

Inad again

And it's going to be now decide about pixel and then we could use the right tool

Just scale it up pretty big here

What's the job done here we go hold shift scale down to see her

Right here and let's make it red

So we get an idea what is actual attackbox is ok

Alright so

What's Tesla sell last thing you want to do is just make sure to trigger

Now it's tested out

Ok

So obviously I can't do anything when I touch the enemy but the idea for this box Collider

Is that one

We need to have it actually flip so when the players going left

Is a turn that's one thing we need to do

And also we wanted to be by default deactivated

When we press the attack key or maybe click the mouse

Quickly flash

My cat

Not obviously won't actually show that Red Box

For the purposes of creating this game right now you're going to show the box

When we click the mouse or press the attack

The first and foremost let's go ahead in make the player flip

When he's going in a certain Direction

What's the weather going to do that is simply go into the update

Create a new condition

Reddit comment here that says flip the players

Local scale

The xx

GIF

The move speed

Is greater than

Say 0.01 or West End negative 2.01 ok

Sophie's

Moving to the right

Is new speed is greater than 1 there for

Is

Logo scale should be positive

Otherwise it should be negative ok

Tell displayways to do this and is also really smart genius ways of doing this out of friend's name the araki actually

My game never song and he could probably condense down what I'm about to write into one line of code

But because we're all going to treat this tutorial as a layman's tutorial

Pretty rudimentary about how we write it's ok

If

Target velocity

That

X is smaller than -1

We're just going to set the transformed at local scale

2

New vector2

Where did you -1

And we'll keep why the same

You do lcf

Target velocity

Directions greater than 101

Just putting back

21

Ok

To this should flip the players local scale

If he's moving to left or is moving to the right

Stridor sound

Tiplee

Awesome

Just for clarification guys

It has the attack box

Is a child of the player

When we flip the -1

The attack box is going to do that as well

All I said when we click on the attack box there is a scale is still the same here

But it's being influenced

Buy essentially a multiplier

On the parrot

Which is -1

Even though it's scale is 10 essentially 10

Because the players x scale is -1

It flips the child inside of it think of nesting dolls that are really good way of thinking about if you turn a parrot nesting

Around may be flooded upside down

What's inside of it is locally basically the same but globally

Based on the parents rotation

Drogheda rotating side

Alright there we go

Alright so he flips now so now we get erase and code

Dad will

Make the box appear only

When we attack and I actually really like attack to be a mouse click you guys can make it worse

Why if you want to be the X key or whatever that's totally fine so first off the very first thing you need to do is go

Project settings

Emily go to work input manager remember this and we go to

Fire 1

Fire one is ok it's the positive line is left control or

Ok so it looks like we can use the input

Stream name of Fire 1

Actually make this thing appear

So let's try and do that really quick

Let's do some pseudocode here if

We press

Fire 1

Then

Set

The attackbox

To active

Otherwise

Set active to fos

Ok I will do this wireless give it a shot must you

Input

Diet

Get

Button

Down

Fire 1

Then we need to say attack box set active

True

We have a little zig zag haircuts this variable doesn't exist so that variable appear

Betsy here I think putting it somewhere around here is fine will organise over variables in a cleaner

Section of a tutorial but for now we're just gonna put the right here and let's go how to make a private but we do want it cereal

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Serializefield

Private

Silly a game object

Check tax

Go back in the unity here

And now

We have the attack box showing up here but there is no reference to it to Unity doesn't really know

The gameobject is supposed to be all in those that it is a gameobject unity

Is this

If you go back into the scripture

If input.get letting down fire 1

Will make the attack box

Activate

Not obviously guys there's cleaner ways of reading this code we can compress this down into one line

But again for the purposes of this tutorial I want to make sure everything is as clear as day to you guys especially with

Conditions

It's a bit out here going unity

Hopefully when we play here this looking really deactivate because when I actually pressing the mouse

Click it

Quickly appears

Now you'll notice that it's really fast I mean sometimes you can't even see it it'll disappear immediately

Well we need to actually write a function

See the active for a set amount of seconds ok

Because clicking a mouse

Is so fast

Times you can barely even see the attack box and I can imagine that would be very third of a player because who knows

Maybe that attack box doesn't last long enough

Even hurt the enemy

So instead of having it immediately disappear in a scripture

What can I use as something called a coroutine

And I know what you're thinking that's a really weird word what the heck are we talking about Thomas and

I'd ever later saying hey guys feel I really do because I don't even know if I'm saying it right it doesn't matter with me

I know what it's use is right so take a look at what a cuppa routine is

Inside of Unity

It says the execution of a current team can be passed at any point using the yield stable

When a years statements used the curry team passes execution in America

Resume that the next frame business what the heck are they talking about basically all occurrence

Is guys is it allows us

To start a function

And that function can actually pause for a certain amount of seconds

And then continue

So why is this valuable to us

Easter Mouse is clicked

I want to start a function called what's a show a tack box

I want to wait maybe half a second

And then disable the attack box

So let's go ahead in create that so let's just write out some pseudocode here but

Start routine

Activate attack

Ok

That's going to be r function so we're starting a curry teen and it's called

Activate attack

Now let's just put it right below here just so we can see it this is going to be activate attack

Punching ok that's just a comment for me to know what this is

Create a function the status in tax year is public void

Activate

Tag

And then we're going to activate the attack box so attack box set active true

Then we're going to wait point

5 seconds

And then we're going to send it back

Boss

Licence

How we actually write this code out to go back to the unity documentation

You can see here we can use this command here

Yield return new waitforseconds is just basically a way of saying a unity I need to wait

Stop reading stop your speed reading and just wait

Return new wife for s a m 2.5 s

So we're getting this red zigzag here what is that mean well

Guys don't rush things right always look at your documentation what's exactly 2

Wrong is well we didn't read the documentation in the documentation it says this is actually how

We declare

A function that uses

Await time

It's cold

In saying that right I'm leaving now but I'm getting it doesn't matter what matters is

You know what these things are used for ok and then you can do

You know Google and unity documentation

So when using a function that waits and stops reading for just a second

You going to make it a type of a numerator ok

Cell

Instead of void

What we're going to write is

Ienumerator there is not a memorable but I numerator

I don't even know what that means

Ok well I know that we can now use this way time

Tell

I'm coming to sell start coroutine

Activate attack so when we press fire

It's going to start a career team meeting is going to start a function that uses

Away time

And that's called activate attack

And here's the function

It looks a little bit different than a regular function because it is use void actually utilising in ienumerator mean

We can now wait so this is one of those things in unity guys where I still to this day

Will have to Google how exactly to write this stuff

Just know

When you want to put a wait time in your function and have a wade

Username generator

Mm to actually call this function you need to make sure you type start a routine before you actually call

Stop the function ok

That doesn't make sense it's ok we can use these a couple times in a game

Tell this is the only time we're going to use it so don't panic

Don't make sense the more you use it

What before we hit playlist just make sure attackbox is deactivated by default

To play

And what should happen as when we click

Unity should literally stop

Reading the code it's just wait

In that function is Gonna Go hold on I'm gonna wait as like Thomas told me to

And then deactivate the attackbox cyclic

Activate wait deactivate

Activate wait deactivate

That allows us to have

Some kind of control

Over the length of the Punch

Set a little bit too long isn't it so we could do is actually just

We can do it this way .1 f

Or another way of doing it is

Attack decoration

Yep

Exist there is the exact line that's ok

Now we can

Free specific year 8 serializefield private float attack

Direction

Now we can go into unity in actually tweek the attack duration at runtime

To get to feeling perfect right now I think

500 start with Dad

Play here that's a little too long isn't it

What's make it 1

Have you got a fair

I'm at a time

To activate that attack box for the player

So now I need to write a script

That will check to see if the attack box is hitting anything

We could technically put this script

Anyway really we can put it inside of the player we can also put it inside of the enemy script as well

But I'm actually couldn't create a new script called a tack box

Because honestly we can use this script

Across various game objects not just for the player

Are you guys or Cy in future videos

For now I guess I just asked you to trust me and we can create a new attack box script

My guys are getting weird warnings weird errors

Affecting your game that's part of the course of Unity outlets drag the attack box here

Now we have the attack back script

On her attackbox game object

Because this is a Trigger

We can actually diffuse the on trigger function

Witches Google there

Unity on trigger enter 2D

Let's see

Where are you there is

Happiness

Pasted into a script again guys

Writing code is it necessarily writing code

Actually physically typing it right sometimes has just researching it finding it and using it

So this case we're just going to use this right here void ontriggerenter2d

And I will do as soon as cold here

Yes I touch

An enemy

The enemy

Ok

Sort this out if

The collider2d which is called col col

Game object

Let's see how can we identify if it's an enemy what would you actually do game object that name =

Anime do it that way

I touched an enemy

Ok

Does say they're out for now and just see if that works

Ok

It's like this year

His name is anime

Closest

Play and see what happens

Ready

I touched an enemy

Looks like it's doing it pretty buggy pretty good to you right now but that's ok we're gonna clean that later

So that works great but honestly not every enemies name is going to be enemy right

So what if we did something like

He said if

Col call gameobject get component

Anime

Collider 2D has a component called enemy

Then

Do this debug reason why we do that is because if inside of you nearly here

My copy and paste and put another Enemy here

You need is going to add a printer says one here

By default

And that means that it would no longer be able to check

Using old method if the name is actually anime

But because it has enemy class

That's a great way to check if you're actually hitting in enemy

Turn it down

Attached an enemy

That's great

Ego

Alright

So that's working great so all we're going to do here is simply just go

Call gameobject

Getcomponent

Enemy

Health

- equals

1

Why is this health got a red zigzag and I need it what's going on

Well remember we got your enemy we can look at our health is actually private

This is an instance where we actually want to make it public otherwise we'll never be able to change

Then

The last thing we want to do is just in the update

Are we going to do is good condition

Something like if health is smaller than 0

Destroy Me

The way we write that is if

My health

Is smaller than 0

Destroy

Game object

Obviously guys there's two ways of doing this you can actually destroy a gameobject

What you can just do gameobject set active

But I'm ok with destroying

Something that you should know that is destroying a game object or cos he very slight

Slight drop in frame rate

In your game

But if you're doing it

Not that often saucy work killing an enemy every 30 seconds it's not that bad song in half

Destroy function just completely destroy

This game object from the game

I see here just delete this enemy here we don't need this

And it's only focus on this enemy right here

Let's watch it health

As we take it

Get down a 99

Ego

So we definitely don't want

Only go down by one unit at a time

And I want this game feeling like more went when you first start out I want you to be able to kill an enemy in maybe

It's ok

So if 100 is going to be the max health across the board for enemies and the player

Then I say we want to decrease by 4 hit so

Value of 25 + decreased by a value of 25

So

Attack power on the enemy here

What actually happened attack power on the new player as well

Then we can subtract that attack power

From the Enemy

Public editor

Attack power

What's my day

25

Now when the attackbox hits in enemy

Simply Go

Decrease by new player that instance

Now we can have some kind of RPG elements in this game

We can actually increase the attack power maybe take a purchase increase in attack power maybe every time that beat

Herbal beginning increase in attack power

Tell if we go to iPlayer here

Protect H 25

I mean it's going to take

4 hits

How to kill the enemy

1

2

34

His health is currently 0 so it actually going to take 5 hits

Easily just jump into your enemy here

Change this to if health is smaller than or equal to 0

Destroy gameobject

No you guys me have noticed that

The attackbox is actually causing the playlist stock rate

Stuck in various places

That's because when a Collider

Even though it's a Trigger

Is a child of another Collider

In this case

Is the child of this capsule Collider here

Double click here in June in this attack box

Is actually because this capsulitis here

It's been treated as another

Collider

You know it's still said to trigger is it just a weird idiosyncrasy with unity they're not gonna get too much detail about

By the way that we fix this is just simply add a rigidbody 2D to it

And then we're going to make that kinematic and all kinematic means is

Exactly influenced by Gravity it's not good actually fall or move like a rigid body would

Just going to be stable so I can remove it all

And also that use for kinematic contact

Is quite

A little bit of a weird

Problem

Are you going to have but just had a rigid body

Gearbox Coletta new speaker

Tested out now

Get stuck to things

But I'm still going to get that triggering

And I can kill you

Are hydrate beautiful her just a beautiful too

I'm up games

Not yet that's ok though how are doing is getting the basics down

To the concert skinning it later

I want to do guys make sure you guys get this number right you just want to set the attack direction to something that

Like so I would say .05 it's great for me

A really quick Direction

There we go that's perfect

I know right perfect now there's plenty of things here guys that we could fix right

We need to add a type of feedback to the player meaning if we get hurt we need to flash the screen if we

Hurting enemy we need a flash that enemy

Things that we need to do and we can talk about that in future videos