WEBVTT

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Utilizing montages and handling shooting direction

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Hello, my name is Young hoon Lee

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In this lesson, we will learn about how to utilize montages

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And we will learn about how to create shooting effect

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In this chapter, we will learn how to create animation motages

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And how to play them

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In animation blueprints

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Additionally, we will learn

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How to attach grenade launchers and sniper rifles

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To the hands

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And how to handle camera motion during shooting

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Animation Montage Creation

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Let's implement an animation of shooting gun

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Where the main character fires a weapon

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If you take a look at this animations folder

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And search for fire

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You will be able to find an animation called Fire Rifle Ironsights

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We will implement this animation

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This animation include character's shoulder movement

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Now, we will control this animation

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By inserting it into the animation blueprint like this

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It seems a bit challenging to insert it into the existing state machine

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Of course, you can do it here

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Like this, add the state

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You can add shoulder movement, state of attacking

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Instead of doing it that way

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It's better for the animation to return to the original state after activating

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So, we will control the animation to have that effect

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There is a feature that gathers animations into one place

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It collects animation sequences

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Making into one allowing us to control them more easily

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In Unreal Engine, we call it an Animation Montage

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Let's take a look at the definition of montage

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This is what it means

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Often used in movies and films

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Combining multiple scenes together

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So, montage is the concept of combining

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Multiple elements into a single animation

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Now, Let's create a montage and control it

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Let's name the montage as Fire

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In the Blueprint folder, right click and create an Animation Montage

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By selecting Create Animation Montage, from the context menu

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Now, you'll need to select the skeleton

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We are using this now

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Set it up like this

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Since it's a montage

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I'll rename it as Montage Fire

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Now, let's open it

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This is how it will look like

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A montage is structured like this

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There is montage

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And then, at the top

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This part is called sections

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If you right click here

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It's name appears, sections

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The very top one is called sections

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The second one is called a slot

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Basically, montages are linked together through slots like this

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Montage is a slot

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That's how you should remember it

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We can add slots

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These slot names you see here are

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Just basic default setting

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You can add new slots

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And when you do that

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There is something called slot manager

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If you click it

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you can add slots right here

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This menu is over here as well

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If you look at the top over here

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Should be in the window catergory

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You can see Anim Slot Manger in the window category

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This has the same features

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Clicking this also adds a tab

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So that was about how you can create a new slot

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You'll see notifications and whatnot

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Now, let's insert an animation here

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I will bring Fire animation

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From this asset browser

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Because that's what I told you we were going to do

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Okay, this is it

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Drag it over here

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Then now, you have composed a single animation sequence

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Of course, you can add more into it

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Like so, you can add more

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So then, two, three mixed together

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And when you play this

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You can see multiple animation

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Forming one single sequence

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This is what we call an animation montage

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Alright, for now in the part where the player controls shooting

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Let's try controlling it

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With just one animation sequence inserted

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Like this

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Here on the left side, you can see there's a concept called Blends

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Blends are the concept where they provide smooth transitions

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Between existing animations

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And a new animation during the transition

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For example, you can think of it in this way

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If the animation ends like this

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But the shooting animation is set up like this

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Then the arm movement wouldn't be smooth

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Transitioning directly like this

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Would feel very awkward and abrupt

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But if you use blends, it will be like this

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Additional frames are automatically generated

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So, the arm gradually stiffens like this

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Gradually lifts up

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I'm not good at drawing, but anyway

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I want to say that it's done in a way that gives this kind of feeling

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Like this, and then it transitions into this

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It would be nice if it could be drawn more beautifully like this

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This is how you create intermediate frames like this

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This is what we call blending

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There are various terms

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The term blend is used

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And sometimes terms like cross

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Or crossfade are also used

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People also use terms like fade

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And terms like blend

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In Unreal Engine

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We use the term blend

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So, there's certain time for blending

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If you hold down a keyboard control key

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And then scroll the mouse wheel, you can reduce it like this

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Alright, let's continue like this No, that's not it

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Timeline bar at the top here

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If you drag it like this

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The total time is 0.23 seconds

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If the blend time is 0.25 seconds

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The animation wouldn't work

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It will not even move

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If blending is done while moving

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The movement will not be made

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Therefore, we need to reduce the time

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Will reduce a lot to 0.05 seconds

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I'll reduce this to 0.05 seconds to use it effectively

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Let's set it up like this for now

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And let's save it

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Then I'd like to integrate this

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Into the animation blueprint

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Since we haven't created a separate state here

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What you want is to smoothly transition

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From the current animation

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To briefly play the shooting animation when you shoot

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And then return to the original animation

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We can do that by inserting animation

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In the middle of the action

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Let's try

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If you left click here

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And search default slot, this comes up

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You can add slots like this

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Like this, connect the slot

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For now, create a node

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named Default Slot and insert it

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Then select this slot

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And on the right side, you can see the option to rename the slot

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You can change it like this

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The existing names

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May not be suitable for what I'm trying to do

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So, I'll add a new slot

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And write it here

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Then you go to the Slot Manager here

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And click Add Slot

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I will name it fire

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Click add slot and create and name it FireSlot

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Name it like this

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You can delete all the default slots

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You can insert in the middle like this

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Or create a new group

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For now, I'll just add a slot

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To the default

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Well, just adding it like this isn't enough

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This is labeled as Default Slot right now

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We should rename it

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Let's rename it as FireSlot

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If the animation isn't reflecting properly for a moment

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Try detaching it briefly and then reattaching it

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This should make it reflect correctly

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It works right?

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This is it

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If it doesn't work for you

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Then, save everything

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Try closing it and opening it again

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After adding and renaming

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Switch back to the Animation Blueprint

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Then proceed to rename the slot

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Select it like this and replace it with FireSlot

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Compile them

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What happens is

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That there is no chage

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Because once we've inserted this slot

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It will perform its action when triggered

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Just inserting it alone isn't enough

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So, in a way, you can think of the concept of slots

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As intercepting or capturing

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So, when we shoot the gun

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We intercept and handle it through this mechanism

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Let's test it briefly in the blueprint

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To see how it works

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Open up the main character blueprint

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TPS Player

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Yes, this one

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In the legacy input settings

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For the left mouse button

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it's already registered as Fire

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It's not there, let me add one then

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 let's name it fire like this

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Let's do this and register the left mouse button

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I'm not going to use this

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I just created it for testing purposes

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Once you've done it

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Let's go back to our main character

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Then you would use 'fire' here

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I see an event

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Since we've configured the enhanced input now

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We don't need to use it

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But I'm just trying to do a test

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When we shoot a gun

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In real life we left click on our mouse

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Then we play the shoulder movement animation

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And this is how

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Search Play Anim Montage

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This one here

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Create a Play Anim Montage node

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There are several nodes for playing animation montages

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If you search Play Montage

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Play Montage is one of them

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There's also a Play Anim Montage node

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Like so, these are examples

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Use whatever suits you

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I will use this one

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Once you are done, connect these pins

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When you press it and indicate that you want it to perform this action

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Next, expand it to see

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Which montage you want to play

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And here you'll see our created montage listed like this

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Then, select it like this

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So the returned value

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It will return the entire time

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Playing the actual animation

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If there's only one animation montage registered

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Only that montage will be played

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If there are multiple montages, it returns a combined value

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You can control animations using this value if you want to

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However, when you control animations

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In the middle tab here

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You can see it set up like this

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In this tab, you can play animations for each section individually

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Also, when you look at playing here

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You'll see at the very bottom it says Start Section Name

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So, sections here refer to segments or intervals

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You can control playback for each segment separately

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In such cases, it's important to note that

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You're not necessarily returning the time of each section

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So don't rely too much on that

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So there are other ways to handle that

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Let's try this method first and see how it goes

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After doing this, compile and run it

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And when you try it out, the shoulders should go twitch, twitch, twitch

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You should be able to see the movement like this

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No matter what gun we choose

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Pressing the left mouse button

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Will make the shoulders twitch like this

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Well, there's a bit of an issue with this

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Let me walk forward

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And shoot my gun

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Do you see the problem?

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Look at the leg when I shoot

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The shoulder movement is played with standing posture

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And If you shoot while walking

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The leg stops while walking

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And tries to stand

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So we need to deal with this problem

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Well, one way to solve this is

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When playing the animation

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We can separate the upper and lower body

278
00:13:41.279 --> 00:13:43.400
And play the animation separately

279
00:13:43.400 --> 00:13:48.720
So we'll use this approach to control this

280
00:13:49.420 --> 00:13:52.660
In order to fix this

281
00:13:52.660 --> 00:13:54.710
The base animation

282
00:13:54.710 --> 00:13:57.599
And the animation through this montage

283
00:13:57.599 --> 00:14:01.559
Need to be differentiated and handled separately

284
00:14:01.559 --> 00:14:05.280
In Unreal Engine, if animations are set up like this

285
00:14:05.280 --> 00:14:07.719
They can be temporarily cached

286
00:14:07.719 --> 00:14:09.319
When we typically talk about caching

287
00:14:09.319 --> 00:14:12.799
It refers to temporarily storing data

288
00:14:12.799 --> 00:14:15.379
I'd like to cache the results

289
00:14:15.379 --> 00:14:18.359
From this move FSM if possible

290
00:14:18.359 --> 00:14:22.590
So I'll capture this and set it up for caching like this

291
00:14:23.640 --> 00:14:25.960
I will use New Cached Pose

292
00:14:25.960 --> 00:14:30.520
This way, we can temporarily save it like this

293
00:14:30.520 --> 00:14:33.960
Since the name is move FSM

294
00:14:33.960 --> 00:14:39.200
We should call this save move FSM

295
00:14:41.400 --> 00:14:45.039
Let me jot this down briefly

296
00:14:45.039 --> 00:14:47.039
So, when you retrieve this

297
00:14:47.039 --> 00:14:51.359
If you try using move FSM again

298
00:14:51.359 --> 00:14:53.559
You can retrieve the cached data

299
00:14:53.559 --> 00:14:55.320
It looks like this

300
00:14:55.320 --> 00:14:58.119
As I mentioned earlier

301
00:14:58.119 --> 00:15:01.239
We're going to separate the upper and lower body animations

302
00:15:01.239 --> 00:15:04.599
we'll use the original animation for the lower body

303
00:15:04.599 --> 00:15:08.899
And for the upper body

304
00:15:08.899 --> 00:15:11.119
we'll use the result from the fire slot

305
00:15:11.119 --> 00:15:13.440
We need to divide it into these two parts

306
00:15:13.440 --> 00:15:15.890
But when using this slot

307
00:15:15.890 --> 00:15:18.280
The original animation should come in

308
00:15:18.280 --> 00:15:21.680
And based on that

309
00:15:21.680 --> 00:15:23.520
we'll decide which new animation to select

310
00:15:23.520 --> 00:15:28.440
And then it will return in this structured manner

311
00:15:28.440 --> 00:15:32.000
So, we need to place this cache here as well

312
00:15:32.000 --> 00:15:35.320
You have to fill this up to prevent any errors from occurring

313
00:15:35.320 --> 00:15:39.200
Shall we look at these two animations like this?

314
00:15:39.200 --> 00:15:42.409
Let's disconnect this for a moment

315
00:15:43.409 --> 00:15:47.490
The structure is formed like this

316
00:15:50.340 --> 00:15:53.119
Yes this is the structure

317
00:15:53.119 --> 00:15:56.519
To achieve separating upper and lower body animations

318
00:15:56.519 --> 00:15:58.730
We'll need some functionality that allows us to do that

319
00:15:58.730 --> 00:16:11.409
There's a node called Layered Blend Per Bone for that

320
00:16:12.359 --> 00:16:13.740
We'll be using this one

321
00:16:13.740 --> 00:16:16.440
Add the original animation

322
00:16:16.440 --> 00:16:17.840
Into the base pose

323
00:16:17.840 --> 00:16:22.090
Then add the new animation to be performed

324
00:16:22.090 --> 00:16:24.569
Into the blend pose

325
00:16:26.719 --> 00:16:28.239
This is it

326
00:16:28.239 --> 00:16:31.039
For better understanding

327
00:16:31.039 --> 00:16:33.520
Think of it this way

328
00:16:33.520 --> 00:16:36.080
There is the structure

329
00:16:36.080 --> 00:16:38.760
We will be standing on it

330
00:16:38.760 --> 00:16:42.060
The player's character makes A pose

331
00:16:42.060 --> 00:16:44.799
Standing like this

332
00:16:44.799 --> 00:16:45.599
Little odd

333
00:16:45.599 --> 00:16:48.769
Anyway, the character will be standing like this

334
00:16:48.769 --> 00:16:50.559
The character's pose

335
00:16:50.559 --> 00:16:52.640
We call it the A pose

336
00:16:52.640 --> 00:16:55.320
This here should be its feet

337
00:16:55.320 --> 00:16:58.320
The Bottom center of the feet

338
00:16:58.320 --> 00:17:00.679
Here is where the first pivot point is now

339
00:17:00.679 --> 00:17:01.960
Typically

340
00:17:01.960 --> 00:17:04.040
 Here we have these bones

341
00:17:04.040 --> 00:17:05.760
You see bones, like in the feet

342
00:17:05.760 --> 00:17:08.359
Knees, or hips

343
00:17:08.359 --> 00:17:09.520
Typically positioned centrally

344
00:17:09.520 --> 00:17:11.359
The hips

345
00:17:11.359 --> 00:17:15.000
Shoulders

346
00:17:15.000 --> 00:17:16.400
Elbows

347
00:17:16.400 --> 00:17:19.160
Hands, neck, head

348
00:17:19.160 --> 00:17:20.839
Be aware of these skeletons

349
00:17:20.839 --> 00:17:23.160
They can be found in such places like this

350
00:17:23.160 --> 00:17:25.199
So, with these skeletons

351
00:17:25.199 --> 00:17:27.839
The order of the skeleton usually

352
00:17:27.839 --> 00:17:29.880
Goes up from the bottom like this

353
00:17:29.880 --> 00:17:33.520
Earlier we had the base

354
00:17:33.520 --> 00:17:36.160
There was a blend

355
00:17:36.160 --> 00:17:39.479
Let's take a look, we have base pose here

356
00:17:39.479 --> 00:17:41.760
And we have blend pose

357
00:17:41.760 --> 00:17:44.000
Given that

358
00:17:44.000 --> 00:17:45.160
We are starting from the bottom

359
00:17:45.160 --> 00:17:47.319
Then, the bottom should be the base pose

360
00:17:47.319 --> 00:17:49.319
From where to where should the base

361
00:17:49.319 --> 00:17:50.439
And from where to where should be the blend

362
00:17:50.439 --> 00:17:51.959
Is the basic concept of this

363
00:17:51.959 --> 00:17:55.940
So, we need to define a specific point where we establish

364
00:17:55.940 --> 00:17:59.000
The boundary between the blend and the base

365
00:17:59.000 --> 00:18:01.400
So, I'll set the boundary at the middle of the spine

366
00:18:01.400 --> 00:18:04.520
Around the waist area

367
00:18:04.520 --> 00:18:08.000
So, the lower body will be from this spine

368
00:18:08.000 --> 00:18:09.599
Down to the beginning and from the spine

369
00:18:09.599 --> 00:18:11.479
To the remaining end

370
00:18:11.479 --> 00:18:13.920
That's how we'll distinguish it now

371
00:18:13.920 --> 00:18:17.610
Let's take a quick look at the skeleton

372
00:18:19.610 --> 00:18:23.800
Here, you can see an image at the top

373
00:18:23.800 --> 00:18:25.160
If you look here, the one all the way on the left

374
00:18:25.160 --> 00:18:27.239
Is what's really a skeleton

375
00:18:27.239 --> 00:18:28.880
If you click this

376
00:18:28.880 --> 00:18:31.359
You should see the skeletons

377
00:18:31.359 --> 00:18:32.880
There's the pelvis

378
00:18:32.880 --> 00:18:34.000
And then there's the spine

379
00:18:34.000 --> 00:18:36.920
And it's set up like that

380
00:18:36.920 --> 00:18:38.640
So, I'm going to divide it like this

381
00:18:38.640 --> 00:18:41.719
Using the waist spine 01 as the reference point

382
00:18:41.719 --> 00:18:42.800
So spine 01

383
00:18:42.800 --> 00:18:45.520
I'm going to copy the name itself

384
00:18:45.520 --> 00:18:48.199
Copy

385
00:18:48.199 --> 00:18:50.439
Go over here

386
00:18:50.439 --> 00:18:54.040
Select Layered Blend per Bone

387
00:18:54.040 --> 00:18:55.560
Go to the right side

388
00:18:55.560 --> 00:18:57.119
It's set up like this

389
00:18:57.119 --> 00:18:59.520
And in details, we have layer set up

390
00:18:59.520 --> 00:19:01.280
If you expand it

391
00:19:01.280 --> 00:19:03.439
You can add

392
00:19:03.439 --> 00:19:05.079
What's called a branch filter

393
00:19:05.079 --> 00:19:06.760
Click this

394
00:19:06.760 --> 00:19:09.199
If you open it up, it looks like this

395
00:19:09.199 --> 00:19:11.239
Right here, in the name section

396
00:19:11.239 --> 00:19:14.640
Remember the name, Spine 01?

397
00:19:14.640 --> 00:19:17.149
Let's paste it in here

398
00:19:18.199 --> 00:19:19.160
If you put it here

399
00:19:19.160 --> 00:19:21.599
This Spine 01 which is about where the waist is

400
00:19:21.599 --> 00:19:25.680
The body will be distinguished as upper and under parts

401
00:19:25.680 --> 00:19:30.560
And there is a space

402
00:19:30.560 --> 00:19:32.680
It can spin or handle like this

403
00:19:32.680 --> 00:19:34.719
If we have divided bodies

404
00:19:34.719 --> 00:19:38.599
The real animation is made

405
00:19:38.599 --> 00:19:40.040
Using the transform information

406
00:19:40.040 --> 00:19:43.239
The concept is that we will be seeing

407
00:19:43.239 --> 00:19:46.160
The replay of the recorded transform

408
00:19:46.160 --> 00:19:48.160
That is the animation of the Unreal Engine right?

409
00:19:48.160 --> 00:19:51.760
So the spin and whatnot are included in there

410
00:19:51.760 --> 00:19:54.040
So we should enable this

411
00:19:54.040 --> 00:19:56.000
so that the character can make the spin

412
00:19:56.000 --> 00:19:59.479
In the MeshSpace

413
00:19:59.479 --> 00:20:01.760
Here's a simpler way to put it

414
00:20:01.760 --> 00:20:05.040
You have your own space and then there's the world space

415
00:20:05.040 --> 00:20:07.920
So instead of just processing things in world space

416
00:20:07.920 --> 00:20:11.520
you first handle them in your own space

417
00:20:11.520 --> 00:20:12.800
And then move that to the world space

418
00:20:12.800 --> 00:20:14.479
Just remember it like this

419
00:20:14.479 --> 00:20:17.000
So I'll go ahead and do just that

420
00:20:17.000 --> 00:20:20.119
Implement these changes and then compile.

421
00:20:20.119 --> 00:20:21.920
Then after that, we'll need to connect it here

422
00:20:21.920 --> 00:20:26.510
I'll set it up so that this becomes the output like this

423
00:20:27.160 --> 00:20:29.880
So after doing this, when you come back and test it

424
00:20:29.880 --> 00:20:33.119
If you shoot the gun, you'll notice that

425
00:20:33.119 --> 00:20:34.800
The lower body doesn't move anymore

426
00:20:34.800 --> 00:20:38.030
You'll see that only the upper body jerks or moves

427
00:20:40.280 --> 00:20:44.839
Then I'll now try implementing this in C

428
00:20:44.839 --> 00:20:48.880
Excluding the animation is done here

429
00:20:48.880 --> 00:20:51.599
the shooting part was handled by the character

430
00:20:51.599 --> 00:20:55.089
Now I will delete this part

431
00:20:59.239 --> 00:21:03.080
Now let's go to our main character

432
00:21:05.880 --> 00:21:09.160
currently, the shooting action

433
00:21:09.160 --> 00:21:12.880
Is handled by the protagonist

434
00:21:12.880 --> 00:21:16.000
So, when we go to the protagonist's header file to process it

435
00:21:16.000 --> 00:21:21.000
Ultimately the animation will be controlled

436
00:21:21.000 --> 00:21:23.079
Through that when shooting the gun

437
00:21:23.079 --> 00:21:24.479
Right?

438
00:21:24.479 --> 00:21:26.599
So, it's set up like this

439
00:21:26.599 --> 00:21:30.239
I'll  implement it on the TPS player side for now

440
00:21:30.239 --> 00:21:33.079
If you come down like this

441
00:21:33.079 --> 00:21:45.119
In the bottom, write, I want to play a montage of

442
00:21:45.119 --> 00:21:48.880
Shoulder movement when shooting

443
00:21:48.880 --> 00:21:52.280
So, we want this

444
00:21:52.280 --> 00:21:54.000
Then, we need to make a montage

445
00:21:54.000 --> 00:22:01.520
UPROPERTY, EditAnywhere

446
00:22:01.520 --> 00:22:03.040
Class and then

447
00:22:03.040 --> 00:22:09.400
UAnimMontage

448
00:22:09.400 --> 00:22:11.239
With this

449
00:22:11.239 --> 00:22:13.969
This one we use Fire

450
00:22:13.969 --> 00:22:18.679
FireAnimMontage

451
00:22:18.679 --> 00:22:25.980
Like so

452
00:22:32.530 --> 00:22:35.560
And then

453
00:22:35.560 --> 00:22:38.959
We go back to our character

454
00:22:38.959 --> 00:22:43.800
We can find the shooting part over here

455
00:22:43.800 --> 00:22:44.920
Right here

456
00:22:44.920 --> 00:22:46.640
OnIAFire

457
00:22:46.640 --> 00:22:49.319
Right here we shoot guns

458
00:22:49.319 --> 00:22:52.160
Doesn't matter what kind of weapon it is for the shoulder movement

459
00:22:52.160 --> 00:22:55.359
So, we write it here

460
00:22:55.359 --> 00:22:58.479
Use function called PlayAnimMontage

461
00:22:58.479 --> 00:23:03.960
Let's add FireAnimMontage here

462
00:23:07.760 --> 00:23:10.439
And we should do this when the value is not null

463
00:23:10.439 --> 00:23:14.599
So, check for the null

464
00:23:14.599 --> 00:23:19.439
Write it like this

465
00:23:19.439 --> 00:23:22.920
Compile this

466
00:23:30.370 --> 00:23:35.279
Come to the main character and in the class default

467
00:23:38.287 --> 00:23:39.199
Right here

468
00:23:39.199 --> 00:23:44.429
In here let's put our custom made Montage Fire

469
00:23:47.479 --> 00:23:51.079
When you start the game, it works just fine

470
00:23:51.079 --> 00:23:53.490
Shoulder twitches

471
00:23:56.640 --> 00:23:57.936
Upper and under body parts are separated well

472
00:23:57.936 --> 00:24:01.386
Camera motion handling while shooting

473
00:24:01.689 --> 00:24:05.400
Let's synchronize the gun and try it out

474
00:24:05.400 --> 00:24:07.199
Right now, the gun is separated

475
00:24:07.199 --> 00:24:08.479
If you look here

476
00:24:08.479 --> 00:24:12.769
I'll attach the gun directly to the hand and try controlling it that way

477
00:24:15.019 --> 00:24:16.640
Do you remember when we added the socket

478
00:24:16.640 --> 00:24:21.560
For shooting the gun to handle this?

479
00:24:21.560 --> 00:24:23.760
So, we'll add the socket here

480
00:24:23.760 --> 00:24:26.520
And use the coordinates for that

481
00:24:26.520 --> 00:24:29.170
In a similar way

482
00:24:29.170 --> 00:24:31.560
We'll create a socket on the hand for each of these weapons

483
00:24:31.560 --> 00:24:34.010
And attach them accordingly

484
00:24:34.010 --> 00:24:36.160
To control them like this

485
00:24:36.160 --> 00:24:38.010
If you look at the mesh

486
00:24:38.010 --> 00:24:41.760
this is the one the character uses

487
00:24:41.760 --> 00:24:44.599
Let's double click to open it

488
00:24:44.599 --> 00:24:47.359
And If you look, there's the skeleton

489
00:24:47.359 --> 00:24:50.920
I will attach it on the right hand of the skeleton

490
00:24:50.920 --> 00:24:53.359
Find the right hand

491
00:24:53.359 --> 00:24:56.040
It's not easy to find

492
00:24:56.040 --> 00:25:00.119
From here, you should look for the right hand

493
00:25:00.119 --> 00:25:03.390
Let's search for it

494
00:25:03.890 --> 00:25:07.560
Let's try hand

495
00:25:07.560 --> 00:25:09.319
There, I see the hand

496
00:25:09.319 --> 00:25:11.479
The name is Hand r

497
00:25:11.479 --> 00:25:14.280
I'll add a socket here

498
00:25:14.280 --> 00:25:16.599
Like this

499
00:25:16.599 --> 00:25:17.900
Right here

500
00:25:17.900 --> 00:25:20.400
Select this and right click on it

501
00:25:20.400 --> 00:25:23.809
Use Add Socket to add a new socket

502
00:25:26.359 --> 00:25:28.040
So, add one like this

503
00:25:28.040 --> 00:25:30.920
Let's use the name

504
00:25:30.920 --> 00:25:33.400
Hand rSocket

505
00:25:33.400 --> 00:25:35.239
Make sure to save it

506
00:25:35.239 --> 00:25:38.400
Let's go ahead and save then come back

507
00:25:38.400 --> 00:25:41.640
Let's go to the source file

508
00:25:41.640 --> 00:25:45.710
I'll move to the character's constructor to check this

509
00:25:47.060 --> 00:25:53.319
Here you can see that we have the gun mesh and the sniper rifle mesh like this

510
00:25:53.319 --> 00:25:57.640
We've created them and attached them like this

511
00:25:57.640 --> 00:25:59.400
You can see them in two places

512
00:25:59.400 --> 00:26:04.479
When attaching these, you can see here that as the second parameter

513
00:26:04.479 --> 00:26:07.280
You can input the socket name like this

514
00:26:07.280 --> 00:26:09.479
Then if you just write the socket name here

515
00:26:09.479 --> 00:26:11.479
It will attach to that socket

516
00:26:11.479 --> 00:26:14.239
So I'll write the name here

517
00:26:14.239 --> 00:26:16.800
Let's say Text

518
00:26:16.800 --> 00:26:19.119
so doing it like this

519
00:26:19.119 --> 00:26:20.680
you can replace the name hand rSocket if you want

520
00:26:20.680 --> 00:26:24.920
But I'll go ahead and use the automatically generated name for now

521
00:26:24.920 --> 00:26:26.040
Do it like this

522
00:26:26.040 --> 00:26:29.950
And here as well, I'll attach it the same way

523
00:26:31.350 --> 00:26:33.839
I'll restart Unreal Engine once

524
00:26:33.839 --> 00:26:37.150
And then build it here

525
00:26:50.500 --> 00:26:54.180
Let's go ahead and run it

526
00:27:00.680 --> 00:27:02.789
Let's go to the character

527
00:27:08.439 --> 00:27:11.079
If you look at it, the gun is attached

528
00:27:11.079 --> 00:27:13.479
But it's way up there

529
00:27:13.479 --> 00:27:16.329
So we need to really attach it

530
00:27:16.329 --> 00:27:18.319
And adjust its location

531
00:27:18.319 --> 00:27:20.920
So, let me proceed with these tasks

532
00:27:20.920 --> 00:27:23.439
Let's do this one by one

533
00:27:23.439 --> 00:27:24.680
Temporarily turn the sniper rifle off

534
00:27:24.680 --> 00:27:26.520
Let's set up the gun first

535
00:27:26.520 --> 00:27:33.319
I'll turn the visible of the sniper rifle off

536
00:27:33.319 --> 00:27:36.520
And it will be hard to control if it moves

537
00:27:36.520 --> 00:27:40.959
If you look here in the mesh, you can stop the animation

538
00:27:40.959 --> 00:27:42.559
Expand this

539
00:27:42.559 --> 00:27:45.880
Expand the advanced settings in animation

540
00:27:45.880 --> 00:27:47.199
You can make a pose

541
00:27:47.199 --> 00:27:49.760
Pause the character

542
00:27:49.760 --> 00:27:53.760
Now let's place the gun

543
00:27:53.760 --> 00:27:58.860
bring it down like this

544
00:27:59.610 --> 00:28:03.099
And place it nicely

545
00:28:18.599 --> 00:28:22.079
We've placed it

546
00:28:22.079 --> 00:28:26.920
If you use the menu over here, it would be better

547
00:28:26.920 --> 00:28:29.959
With Perspective menu, like front, you can micro manage the location

548
00:28:29.959 --> 00:28:33.880
I think it's good enough

549
00:28:33.880 --> 00:28:36.959
Go to the right side perspective

550
00:28:36.959 --> 00:28:40.319
adjust a bit

551
00:28:40.319 --> 00:28:43.439
If it's too big,let's turn off this setting and adjust the spacing

552
00:28:43.439 --> 00:28:45.689
Turn this thing off

553
00:28:45.689 --> 00:28:48.760
Try to place it nicely

554
00:28:51.760 --> 00:28:53.319
Feels like the gun is too big

555
00:28:53.319 --> 00:28:54.560
Will go for it

556
00:28:54.560 --> 00:28:56.520
Now second one, will do the same for the sniper rifle

557
00:28:56.520 --> 00:28:59.520
Turn off the gun as well for this one

558
00:28:59.520 --> 00:29:02.959
Visible routine

559
00:29:02.959 --> 00:29:05.000
Turn off the reserve like this

560
00:29:05.000 --> 00:29:08.199
And then turn the sniper rifle on

561
00:29:08.199 --> 00:29:12.319
This one also is out of place

562
00:29:12.319 --> 00:29:16.079
Place it near where it's supposed to be

563
00:29:22.079 --> 00:29:27.280
Just like before, front perspective

564
00:29:27.280 --> 00:29:30.249
I'll give it a little spin

565
00:29:46.599 --> 00:29:51.089
Place it in a suitable position

566
00:30:04.239 --> 00:30:08.400
Just place it nicely like this, and it should be good

567
00:30:08.400 --> 00:30:09.640
Now, once you are done with the setting

568
00:30:09.640 --> 00:30:11.160
Now we should make sure it's fully visible

569
00:30:11.160 --> 00:30:13.640
Turn on the visible routine again

570
00:30:13.640 --> 00:30:16.440
The animation with the pose

571
00:30:16.440 --> 00:30:19.320
Must be placed on the right spot

572
00:30:21.920 --> 00:30:28.199
And then you will see it working well

573
00:30:28.199 --> 00:30:30.940
The camera follows well

574
00:30:30.940 --> 00:30:34.380
Press number 2, the gun is set nicely

575
00:30:36.880 --> 00:30:40.680
By doing this, you can synchronize the animation with the gun's position

576
00:30:40.680 --> 00:30:44.079
And handle it smoothly and naturally

577
00:30:44.079 --> 00:30:47.179
Then adding a slight shake when shooting the gun

578
00:30:47.179 --> 00:30:50.719
can enhance the impactfulness

579
00:30:50.719 --> 00:30:54.019
So, I'll go ahead and try creating a feature that shakes

580
00:30:54.019 --> 00:30:56.439
The camera like this for added effect

581
00:30:56.439 --> 00:30:58.400
I'll start by creating the blueprint for this

582
00:30:58.400 --> 00:31:01.810
Try right clicking here like this

583
00:31:03.160 --> 00:31:04.839
Find Blueprint class

584
00:31:04.839 --> 00:31:07.800
Then select All classes like this

585
00:31:07.800 --> 00:31:12.809
I'll search for camera shake here

586
00:31:14.959 --> 00:31:20.359
Okay, so there's a Camera Shake Base available

587
00:31:20.359 --> 00:31:24.680
Alright, select this Camera Shake Base, and then click Select

588
00:31:24.680 --> 00:31:32.920
Okay, then I'll name this BP CameraShake

589
00:31:35.520 --> 00:31:38.640
if you double click to open it

590
00:31:38.640 --> 00:31:42.160
you'll see it looks something like this, empty

591
00:31:42.160 --> 00:31:44.520
But here on the right side in the details

592
00:31:44.520 --> 00:31:47.520
You'll see there's something called Camera Shake Pattern

593
00:31:47.520 --> 00:31:49.520
If you look at the root camera pattern

594
00:31:49.520 --> 00:31:52.479
You'll see there are four options listed here like this

595
00:31:52.479 --> 00:31:54.319
Then if you look below

596
00:31:54.319 --> 00:31:56.839
You'll see there's this Wave Oscillator

597
00:31:56.839 --> 00:31:59.989
Which is what we typically think of as

598
00:31:59.989 --> 00:32:01.880
Camera vibration or oscillation

599
00:32:01.880 --> 00:32:05.230
So creating an amplitude with this allows us

600
00:32:05.230 --> 00:32:08.880
To shake the camera using that concept

601
00:32:08.880 --> 00:32:11.680
If you look at the second one, there's something called a sequence

602
00:32:11.680 --> 00:32:16.079
Sequence, as the name suggests, is used to create animations

603
00:32:16.079 --> 00:32:19.040
We typically refer to animation sequences as animation sequences

604
00:32:19.040 --> 00:32:19.920
Right?

605
00:32:19.920 --> 00:32:21.359
Okay, so we have this here

606
00:32:21.359 --> 00:32:24.560
The concept of Perlin noise

607
00:32:24.560 --> 00:32:28.079
Involves defining a specific region

608
00:32:28.079 --> 00:32:30.680
And then varying the intensity within that area

609
00:32:30.680 --> 00:32:34.880
It uses values between 0 and 1 as coordinates

610
00:32:34.880 --> 00:32:36.640
It can also be used for rotation

611
00:32:36.640 --> 00:32:40.079
So it represents randomness in this way

612
00:32:40.079 --> 00:32:42.199
Think of it as embodying this concept

613
00:32:42.199 --> 00:32:44.499
Finally, Composite refers to using

614
00:32:44.499 --> 00:32:47.439
A combination of these three concepts together

615
00:32:47.439 --> 00:32:50.760
So, let's go ahead and create a Wave Oscillator first

616
00:32:50.760 --> 00:32:54.339
Click on this

617
00:32:55.839 --> 00:32:59.400
If you expand it, it looks like this

618
00:32:59.400 --> 00:33:02.550
Then I'll adjust just the rotation value once

619
00:33:02.550 --> 00:33:05.280
I'll go ahead and adjust

620
00:33:05.280 --> 00:33:07.980
The rotation values to see how it moves

621
00:33:07.980 --> 00:33:13.070
It's designed so you can adjust three values, pitch yaw and roll

622
00:33:14.920 --> 00:33:17.359
So

623
00:33:17.359 --> 00:33:20.359
I'll set this one

624
00:33:20.359 --> 00:33:23.560
At the top to 1

625
00:33:23.560 --> 00:33:27.000
Usually, amplitude refers to intensity

626
00:33:27.000 --> 00:33:32.079
And frequency refers to the concept of frequency or rate

627
00:33:32.079 --> 00:33:37.430
So you can use this to control as needed

628
00:33:39.680 --> 00:33:44.359
Set Pitch to 0.5

629
00:33:44.359 --> 00:33:46.710
And Frequency to 10 like this

630
00:33:47.760 --> 00:33:51.160
And Yaw controls the rotation from side to side, like nodding up and down

631
00:33:51.160 --> 00:33:52.680
I mean yaw rotation

632
00:33:52.680 --> 00:33:53.719
I won't do this one

633
00:33:53.719 --> 00:33:56.439
Let's set this one to 0

634
00:33:56.439 --> 00:33:57.839
In a sense, pitch corresponds to nodding up and down

635
00:33:57.839 --> 00:33:58.640
While yaw corresponds to swaying side to side

636
00:33:58.640 --> 00:34:02.160
Think of this as a swaying motion

637
00:34:02.160 --> 00:34:06.479
The thing is how are we going to rotate the camera?

638
00:34:06.479 --> 00:34:12.879
And I'll set Roll to just 0.2 like this

639
00:34:12.879 --> 00:34:17.479
Set this one to 0

640
00:34:17.479 --> 00:34:22.040
Next, there's the FOV and timing options here

641
00:34:22.040 --> 00:34:23.919
In the timing section, it looks like this

642
00:34:23.919 --> 00:34:26.479
The duration is set to 1 here

643
00:34:26.479 --> 00:34:28.520
And there's also a blend time like this

644
00:34:28.520 --> 00:34:31.439
So, I'll reduce the blend time a bit

645
00:34:31.439 --> 00:34:33.479
This one with 0.05

646
00:34:33.479 --> 00:34:37.000
You can think of the blend time as similar to when you blend animations earlier

647
00:34:37.000 --> 00:34:38.800
You have the camera

648
00:34:38.800 --> 00:34:40.439
In its original controlled state

649
00:34:40.439 --> 00:34:43.679
And then you want it to momentarily shake

650
00:34:43.679 --> 00:34:45.439
Before returning to its original state

651
00:34:45.439 --> 00:34:48.879
That's what we're talking about when we mention the blend time

652
00:34:48.879 --> 00:34:52.229
Make it short, like 0.05 seconds

653
00:34:52.229 --> 00:34:55.320
Let's set it up like this and give it a try

654
00:34:55.320 --> 00:34:58.719
Since this is now in blueprint

655
00:34:58.719 --> 00:35:01.719
To use it in the source files

656
00:35:01.719 --> 00:35:04.069
we'll need to create a variable for it

657
00:35:04.069 --> 00:35:06.919
And retrieve it for use

658
00:35:06.919 --> 00:35:13.239
So let's go to the character

659
00:35:13.239 --> 00:35:14.320
Not the animation

660
00:35:14.320 --> 00:35:16.399
And handle it from this side

661
00:35:16.399 --> 00:35:19.220
Under the montage

662
00:35:22.270 --> 00:35:27.470
We need to declare variables

663
00:35:29.120 --> 00:35:35.990
For handling camera shake

664
00:35:36.040 --> 00:35:40.479
So we'll also use U Property for this

665
00:35:40.479 --> 00:35:44.500
Edit Anywhere

666
00:35:44.500 --> 00:35:46.239
I'm going to use T SubclassOf

667
00:35:46.239 --> 00:35:49.120
Instead of 'class' for this

668
00:35:49.120 --> 00:35:51.080
That's also the concept of U Class

669
00:35:51.080 --> 00:35:53.080
So I'll call it a class

670
00:35:53.080 --> 00:35:56.730
Basically, that will be UCameraShakeBase

671
00:35:57.980 --> 00:35:59.280
Here it is

672
00:35:59.280 --> 00:36:01.159
Set up like this

673
00:36:01.159 --> 00:36:06.489
Alright, I'll name this camera shake

674
00:36:06.489 --> 00:36:10.199
Let's go to where we shot the gun earlier

675
00:36:10.199 --> 00:36:14.639
It should be located below

676
00:36:15.439 --> 00:36:19.739
Here, this is it

677
00:36:21.639 --> 00:36:24.879
Let's make sure to include the shake here as well when we do this

678
00:36:24.879 --> 00:36:28.929
So we'll only do the camera shake

679
00:36:28.929 --> 00:36:32.160
When the shake variable is not null

680
00:36:33.210 --> 00:36:35.280
So to shake the camera

681
00:36:35.280 --> 00:36:36.840
We need to access

682
00:36:36.840 --> 00:36:40.280
The player controller's camera manager

683
00:36:40.280 --> 00:36:43.239
Or player camera manager

684
00:36:43.239 --> 00:36:48.189
I'll use Get World

685
00:36:48.189 --> 00:36:52.360
To retrieve Get First Player Controller

686
00:36:52.360 --> 00:36:59.479
Here you can see there's a Player Camera Manager

687
00:36:59.479 --> 00:37:07.679
Here you'll find constants like Start Camera Shake

688
00:37:07.679 --> 00:37:09.600
Here we'll put in

689
00:37:09.600 --> 00:37:13.199
the T-SubclassOf type we created earlier

690
00:37:13.199 --> 00:37:16.929
Let's assign camera shake here like this

691
00:37:18.879 --> 00:37:21.779
Well, actually, going straight ahead like this

692
00:37:21.779 --> 00:37:24.399
Can be a bit risky

693
00:37:24.399 --> 00:37:27.879
For example, while it's unlikely

694
00:37:27.879 --> 00:37:29.729
Most of the time when we fetch this

695
00:37:29.729 --> 00:37:31.639
It could be null, right?

696
00:37:31.639 --> 00:37:34.719
So, in cases like this, it's often a good practice

697
00:37:34.719 --> 00:37:37.019
To assign it to a variable

698
00:37:37.019 --> 00:37:40.399
Check if it's null, and then proceed accordingly

699
00:37:40.399 --> 00:37:43.639
Well, since we don't expect that possibility

700
00:37:43.639 --> 00:37:47.150
I'll go ahead and write it like this

701
00:37:49.800 --> 00:37:53.480
I'll go ahead and compile it in Unreal

702
00:38:02.080 --> 00:38:05.760
And we'll have to fill up the value

703
00:38:05.760 --> 00:38:12.840
Here you select Class Defaults

704
00:38:12.840 --> 00:38:14.959
Right here

705
00:38:14.959 --> 00:38:18.320
Then choose our BP Camera Shake that we created

706
00:38:18.320 --> 00:38:22.159
Replace it with that, compile

707
00:38:22.159 --> 00:38:26.239
And then run it to see if the camera shakes when you shoot

708
00:38:26.239 --> 00:38:28.760
It shakes quite vigorously

709
00:38:28.760 --> 00:38:30.810
Now you can adjust

710
00:38:30.810 --> 00:38:34.660
These shaking values to your liking

711
00:38:35.760 --> 00:38:38.360
Let's adjust the settings then

712
00:38:38.399 --> 00:38:41.589
I'll set this one to 0.1

713
00:38:42.439 --> 00:38:45.089
this one to 1

714
00:38:49.439 --> 00:38:51.560
And it seems the duration of the shake is a bit long

715
00:38:51.560 --> 00:38:54.560
So I'll reduce it to 0.1

716
00:38:54.560 --> 00:38:56.760
This one here, maybe we can speed it up a bit

717
00:38:56.760 --> 00:38:57.800
Let's try 0.5

718
00:38:57.800 --> 00:38:59.280
You can continue tweaking these values

719
00:38:59.280 --> 00:39:02.239
Until you find the right fit

720
00:39:02.239 --> 00:39:04.949
If it's too intense, it might not feel right

721
00:39:08.399 --> 00:39:10.360
So adjusting like this

722
00:39:10.360 --> 00:39:13.510
Should help you

723
00:39:13.510 --> 00:39:16.569
Decide what works best

724
00:39:17.919 --> 00:39:20.080
let's try making some sound

725
00:39:20.080 --> 00:39:25.019
To make sound, we need to look at

726
00:39:25.769 --> 00:39:29.239
Where the sound files are located in our model

727
00:39:29.239 --> 00:39:31.619
Right here

728
00:39:32.919 --> 00:39:33.800
Right here

729
00:39:33.800 --> 00:39:35.120
Rifle

730
00:39:35.120 --> 00:39:38.320
Let me go ahead and play this sound for you

731
00:39:38.320 --> 00:39:42.719
Similarly, let's go to the main character header file

732
00:39:42.719 --> 00:39:44.760
Right here

733
00:39:44.760 --> 00:39:48.919
Put in UPROPERTY

734
00:39:48.919 --> 00:39:51.600
And EditAnywhere

735
00:39:51.600 --> 00:39:53.560
Write Class

736
00:39:53.560 --> 00:39:57.959
USoundbase

737
00:39:57.959 --> 00:40:01.239
Like this

738
00:40:01.239 --> 00:40:05.740
And then BulletSound

739
00:40:13.040 --> 00:40:15.740
So we've been filling this out

740
00:40:15.740 --> 00:40:18.080
In the blueprint all along

741
00:40:18.080 --> 00:40:22.040
Shall we fill this in the constructor this time?

742
00:40:22.040 --> 00:40:25.239
Let's go to the constructor of the protagonist here

743
00:40:25.289 --> 00:40:30.650
Come down to the bottom, and fill it out

744
00:40:30.650 --> 00:40:35.719
We'll also use Constructor Helpers for this

745
00:40:35.719 --> 00:40:40.159
Put in FObjectFinder

746
00:40:40.159 --> 00:40:45.360
This one should be USoundBase

747
00:40:45.360 --> 00:40:49.439
And then TempSound

748
00:40:49.439 --> 00:40:53.479
I mean TempBulletSound

749
00:40:53.479 --> 00:40:56.170
I'll name it like this

750
00:40:59.120 --> 00:41:01.560
Then we need to know the path for that

751
00:41:01.560 --> 00:41:06.000
Select it like this, and you can copy the reference for this as well

752
00:41:06.000 --> 00:41:07.800
I'll paste it here

753
00:41:07.800 --> 00:41:09.560
And it should look like this

754
00:41:09.560 --> 00:41:11.320
And for the asset

755
00:41:11.320 --> 00:41:14.879
Like this, using F-Object Finder from Constructor Helpers

756
00:41:14.879 --> 00:41:17.399
Alternatively, you can use F-Class Finder

757
00:41:17.399 --> 00:41:19.520
To read everything at once

758
00:41:19.520 --> 00:41:22.000
After doing this

759
00:41:22.000 --> 00:41:26.879
Write If TempBulletSound

760
00:41:26.879 --> 00:41:31.159
If it succeeded

761
00:41:31.159 --> 00:41:32.959
Assign BulletSound to the variables

762
00:41:32.959 --> 00:41:40.399
You can directly insert the object of

763
00:41:40.399 --> 00:41:43.230
Temp-Bullet Sound here

764
00:41:45.080 --> 00:41:48.239
You just need to insert it like this

765
00:41:48.239 --> 00:41:50.639
There's also the option to insert it through a function like this

766
00:41:50.639 --> 00:41:51.840
They are the same

767
00:41:51.840 --> 00:41:54.800
Ultimately, since the object's type is

768
00:41:54.800 --> 00:41:57.159
Exactly what we want as the sound base

769
00:41:57.159 --> 00:41:59.910
You can simply insert it like this

770
00:42:01.560 --> 00:42:03.919
Do this and save it

771
00:42:03.919 --> 00:42:06.159
Compile again and see the result

772
00:42:06.159 --> 00:42:07.679
But since we've made change in the header file

773
00:42:07.679 --> 00:42:13.050
In that case, it's usually a good idea to reopen Unreal Engine

774
00:42:21.000 --> 00:42:23.919
Then, we should definitely try shooting the gun to see

775
00:42:23.919 --> 00:42:28.159
Let's move down and shoot the gun

776
00:42:28.159 --> 00:42:30.639
Right here

777
00:42:30.639 --> 00:42:31.959
I'll make the sound

778
00:42:31.959 --> 00:42:35.959
If Bullet Sound is not null

779
00:42:35.959 --> 00:42:39.479
Then we can proceed like this

780
00:42:39.479 --> 00:42:45.000
UGameplayStatics PlaySound2D

781
00:42:45.000 --> 00:42:46.560
Let's use this one

782
00:42:46.560 --> 00:42:47.560
Here I add in the world

783
00:42:47.560 --> 00:42:49.479
And then the sound file

784
00:42:49.479 --> 00:42:55.159
Then, put in GetWorld and BulletSound

785
00:42:55.159 --> 00:43:02.539
Let's compile this in Unreal Engine and see the results

786
00:43:14.639 --> 00:43:19.479
Run it and you should see that the sound plays correctly

787
00:43:23.179 --> 00:43:27.720
I will now summarize the content we learned in this chapter

788
00:43:28.125 --> 00:43:29.325
Animation Montage creation
Animation Montage
Produce animation Montage using the Fire Rifle Inronsights asset in the Animations folder

789
00:43:29.325 --> 00:43:30.625
Drag Fire Rifle Ironsights from the asset browser and place it into the slot
Modified the animation montage blend time

790
00:43:30.625 --> 00:43:31.775
An animation montage applied via blueprint
Inserted a shooting animation into the middle of the existing animations in the ABP TPSP animation blueprint

791
00:43:31.775 --> 00:43:32.975
Set spine 01 as the pivot point to divide the upper body for shooting and the lower body for movement animations in handling

792
00:43:32.975 --> 00:43:34.125
Blueprint applied animation montage
Declared the shooting animation montage and its playback function in TPSPlayer.h file

793
00:43:34.125 --> 00:43:35.125
Added the implementation of the shooting animation playback function in TPSPlayer.cpp file
Assign Montage_Fire to the Fire Anim Montage field in the details panel of BP TPSPlayer

794
00:43:35.125 --> 00:43:36.075
Handling camera motion during shooting
Handling camera motion during shooting perspective
Create a Blueprint Class inheriting from CameraShakeBase and name it BP CameraShake

795
00:43:36.075 --> 00:43:36.975
Set Root Shake Pattern to Wave Oscillator Camera Shake Pattern and assign values to each property

796
00:43:36.975 --> 00:43:37.925
Declared properties for camera shake handling in TPSPlayer.h file
Using the GetFirstPlayerController function to access the PlayerCameraManager

797
00:43:37.925 --> 00:43:38.825
Getting the member variable and passing it as an argument to the StartCameraShake function

798
00:43:38.825 --> 00:43:39.725
In the details panel, assign BP CameraShake to the Camera Shake field
Handling the playback of shooting sound
Added a variable for bullet firing sound in TPSPlayer.h file

799
00:43:39.725 --> 00:43:40.675
Declared a variable TempBulletSound of type USoundBase using ConstructorHelpers' FObjectFinder in TPSPlayer.h

800
00:43:40.675 --> 00:43:41.625
Copied and pasted the asset path for Rifle Sound Wave into TEXT as a constructor argument
When the load is successful using the Succeeded function

801
00:43:41.625 --> 00:43:42.575
Assigned the loaded value to the BulletSound variable
Played BulletSound using UGameplayStatics' PlaySound2D function