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outdrive

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we are back and ready to start building
out some in the actual gameplay

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in our game and that's gonna begin by
creating

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and enemy character the weekend interact
with so let's start off by going back to

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our C plus plus classes jumped and or
twin stick shooter folder

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and here's our base character c plus
plus class once again

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I want you right click on that go over
to create

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blueprint class based on base character

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click and we're gonna name this one

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an army character such creative name
Drake

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now won a place that in the blue prints
folder as well

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click on the create blueprint class
button wait a second and it magically

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appears

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so well it's drag this up to the top in
adjuster panels when can I see all the

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different bits and pieces again

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we do have our summer the same stuff we
do with the hero to do so let's elect or

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mash component

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we will and the SK manikins skeletal
mash

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and will place this inside the capsule
just like before

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and rotate that ninety degree so it's
facing former

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now I don't want the enemies to be the
same color as the hero that's going to

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be confusing

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just too much to look at so let's figure
out

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how we can change that color if we take
the skeletal national double click it

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that's gonna open this colossal mash up
in Persona

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and it's going to take us right to the
mashed ap so we can pan around them and

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see how

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awesome this character looks and he does
look pretty cool not gonna lie

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but we can also see the materials that
are applied to

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and there to love them there is that the
you reform and

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body and reform and chest logo which is

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actually yes the should be in instance
Arvada

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the top on so let's take the arm and
body your uniform and body material its

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DoubleClick that now open that up

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material under now there's not that much
going on here it's really just blending

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together a few

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layered materials that you have some
areas that look like Nadal

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and dark grey plastic in this

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days plastic which kinda dominate the
whole character will

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that Bayesian color is a is better
Preminger

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and it's named body-color so if we make
a dynamic version at this material

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and we change body-color we can thereby
change the color I love this entire

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character which is pretty cool

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but note the spelling there its body
color without spaces matter fact

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I'm gonna selected here inside the
details dental and it controls

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sees I don't have to actually typing
leader now let's go back over to our

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enemy character

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let's go straight to the construction
script I'm gonna drag

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a reference to that skeletal mash here
into the construction script

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rehab now if you drag a wire of this
what we need

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is a dynamic version up the material
that's applied to

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index 0 how do I know it'd index here
what we jump back over

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to persona notes with element 0 an
element 1

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11:00 is the main material element one
is the little chest logo which is just

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giving us

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the little you re for logo that you see
here were taken some

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right up on so let's not jump back out

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struggle wire of and I want to just take
the word

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dynamic her if you can spot dynamic I
apparently can't

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I was so there's create dynamic material
instance

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now this is Kennedy do it all at once
node I love this nude

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what this is doing is it's grabbing
whatever material was found

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in element index 0 it is converting over
to a dynamic version so that you can

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change

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any parameters that are found inside it
and then once its done that it really

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applies it back to that same

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element number so will connect that up

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and then we just want to do I are we
could set this to a value

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you know let's do that nothing will ever
use at less do anyway let's take this a

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new dynamic

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material we just created promoted to a
variable and we're gonna name it

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Dina

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then

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after we done take the return value that
new

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I'm variable drag a wire of it and see

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set vector parameter value

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like so now this is going to ask you

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what primary wanna talk to remember
earlier we copied

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body-color so control V there it is
body-color

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no spaces but what color we gonna send
it to

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well this is where you just decide what
color you want your an immediate be so

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let's go with some shade

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a red sick animal arms too bright
pregnant

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eg so just screams danger

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and if you take a look over in the the
ports actually

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compile look over the port he turns

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bright red which is pretty cool I now if
you want to

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you can right click on that value
promote that to a variable

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and call this and any color like so

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and so now if you take a look at the
viewport you could go over to

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enemy color and in the if you compile
this you can now go over the details

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panel

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and you can set this any shade you want
so you enemy can be

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anything he could be bright yellow if
that's your thing

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are or he could be orange or on a plane
back to read

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will just lead I will decide at rated
just a little bit

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there you go said look super dangerous
now you'll notice

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this is not changing the color the logo
that's fine

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I will just leave it as a a nice little
white logo on his chest or

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beige logo whenever but now we've got a
nice visual I differentiation between

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our hero in our enemy some issue that
should make it a lot easier to tell one

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from the other

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on the screen which is great now with
that done

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let's setup the controller

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the AI controller that is gonna drive
this

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enemy around now I'm only doing this cuz
we're only like six minutes into this

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video

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and it's such a simple thing that I
didn't really want to put it off into

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its own video to be really really short

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cell I to set this up let's go back out
to our content browser

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and

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and let's sell right click hearings on a
blue prints folder

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and let's make a new blueprint class we
want to base this

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offered AI controller which does not
appear in our common classes list

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to find a I controller need to click on
all classes

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and its easiest to just search that the
search for AI

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controller you'll see it really quick
select AI controller and then click on

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the green

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Select button listening this enemy

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AI and will open it up

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as just a blueprint like any other cell

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has all the same panels will put us all
back like they were and come over to the

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event graph

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now it's got some components to help it
do some stuffs right so it's got

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a transform component it's got it passed
following component which is gonna make

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use a nap mash

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and then actions on a comp are actions
component which gonna be used for a

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for various I behaviors now this as I
mentioned

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is going to be a very very simple

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AI controller so bledsoe right click

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and let's make a custom event

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we're gonna call this event track

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player as all gonna do

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or you could call chase player track
player hun player whatever

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I told me the same thing and what it's
gonna do is a special function

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called AI move to what this does is this
takes upon

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and tell that to move toward a
destination or toward a target

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actor and once it gets within the
acceptance radius it stops

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the nice thing about this is it will
keep hunting it'll keep moving the pawn

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toward that target actor

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until it hit the acceptance radius
meaning we don't have to call this node

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very often

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in order to have something to chase is
our player pretty much all the time

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we do need to feed at the pawn that is
being driven

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and we need feet at the target the pawn
is being driven is

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pretty easy we can just right-click
since this is the AI controller

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this controller will be plugged like a
cartridge into the sidebar

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our enemy characters head which at a
metaphor that's

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not really how it's gonna

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there's no cartridge hang upside his
head go with me let's right click

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and see get control upon

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so that is literally a reference to the
pawn

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this I controller is controlling and
will plug that

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into pot alright

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next we need the target actor for this
let's say

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gets player character and there it is

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to get the player character and that
becomes the target after

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that's all we need to do we just need to
use their so now

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when I whenever this is called the enemy
will just move toward the hero

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until it gets within five units in five
minutes is fine we don't need to change

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that

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however we do need to have something
that keeps

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calling track player over and over just
he's picking hey

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keep checking the player keep checking
the player because if we ever get within

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this radius

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this hey I moved to will stop firing and
then I'll never chased the player again

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if we don't explicitly tell into to do
that we are going to you

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set a timer a timer is released

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it's actually just like the timer on a
camera there will be a countdown and at

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the end the countdown

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is going to call some function and you
just type the name in the function

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right inside here so we're gonna tell it
to call

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track player how often do we want to
track it well let's do it every

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one second and this will be looping so
it's gonna keep calling

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every second now when do we had noticed
this is not an event right we need

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something that's gonna

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called it something or plugin to this
execute a bullpen

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so let's grab begin play

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what this means is the moment this AI
character spawns or the moment the game

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begins

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this set timer will be called and that
is going to keep calling track player

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once a second keep telling the hey i'd
chase the player

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over and over so it's compile

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let's save then we're gonna take are
enemy character

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and said a few things up so let's go
into it class

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defaults and we are going to come down
to the

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AI controller class property and we can
set that too

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enemy AI like cell compile and save

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now watch this we take our enemy
character

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and Dragon in the world and then hit
play

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actually nothing's gonna happen yet
let's just move over to him

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is just sitting here being boring so his
behavior is actually there he's got me

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in the the requisite microchips in his
hand so to speak

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to make a move around we doesn't have
yet is

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and navigation mesh and navigation
measures are super easy to do and

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unreal watch this governor volumes
Anderson in the place in browser click

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on the volumes category and you should
find

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the now mash downs volume drag that on
your floor

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now this needs to penetrate down into
the floor some move it down a little bit

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and then grab your steel tool just gala
doubts were completely covers the floor

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and hit the P key to visualize your mash

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and there you go there's a navigation
ish

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already done so again super super easy
so now if we hit play

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oh my goodness the he so fast

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we can get away from him that's that's
actually kinda ridiculous we need to

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slow him down

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so would stop playing let's go to you

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our enemy character local right into the
movement component or character moment

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component

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and let's grab the max walk speed I'm
gonna pull that down to you

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IRC she to

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and read that apply make the game too
easy but you can always tweak it later

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soul compile and save now will hit play
and there you go

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he is just chasing us and he'll keep
right on chasing us

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over No if he touches us he'll wait a
second then Hill go again

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so there you go we have

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and any with his own little AI that is
just chasing the player

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which is pretty awesome so let's go
ahead and get outta here

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that is going to wrap things up for this
video

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thanks a lot

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for