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Welcome back, my fellow
game developers.

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This is a very quick
and short video.

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This is just a small tweak
that we want to make.

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And the way our
player moves around,

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we don't have major cold,

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we don't have major principles.

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We do have a little
lesson on mathematics,

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which is acknowledged the most

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exciting part in
game development.

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Yay, that's what you came
here for math, right?

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Anyways, let's not
waste any more time.

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And you can see that

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the velocity when we move
diagonal is the same

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as when we are moving up
or down or left and right.

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Anyways, let's not waste

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any more time and
let's get started.

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Oh, okay.

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So let's see what's
happening in here.

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As I've told you,

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whenever we are moving
left and right,

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we are moving at a
certain velocity.

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But when we are moving left
or right and we're moving up,

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we are moving at a
much faster speed.

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So if you're not convinced,

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let's test this out.

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Maybe I am lying.

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I'm going to go down here.

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I'm going to write
debug dot log.

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And in here I'm
going to say walking

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with a speed of and I'm

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going to go ahead and add the
layer rigid body velocity.

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Let's save that and
let's see what we have.

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Now this might not work.

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If I click on the Console,

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you'll notice that we have 00.

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So now if I move it,

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you wouldn't see it stand.

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When I move away,

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it's minus 10 when I move
up and to the right,

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you can see that it's 10 by 10,

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and that's the movement speed
that we have right here.

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But we don't want to see

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how the vector of
the velocity is.

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We want to see the magnitude.

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So I'm going to add something
called the magnitude.

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If you don't know what
the magnitude is,

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I'm going to explain
it in just a bit.

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So again, we run the game.

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Now we have the magnitude 0.

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If I walk to the right,

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we have done to the
left, we have ten.

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If I move up, it's still 10.

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You can see it
increasing in here.

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If I move down, it's still 10.

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But now if I move to the right,

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end up, we can see that it's 14.

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So Michael, your instructor,

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does not lie. Never.

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You can see that we are moving

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faster when we are
moving diagonally,

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up or down by pressing two keys.

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Why is that happening?

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Well, it comes back.

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Simple mathematics.

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You can see that we have

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the velocity on the y and
the velocity on the x.

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That's what we were seeing
before we added the magnitude,

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which is 10 by 10.

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So what happens here
is we're adding both

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of these vectors as we
are moving diagonally.

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And we have the final
player velocity,

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which is faster than those two.

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Now, if you want,

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you can keep this in

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your game if it's part
of your gameplay.

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But usually we don't
want the player to

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move faster when he's
moving in a diagonal.

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This is not something logical.

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So what we'll do is
we'll normalize.

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We do by normalizing
is recreate this arc.

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And this means this
becomes a circle,

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which means that the velocity on

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the x plus the velocity on

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the y is the same as

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the velocity when we are
moving in a diagonal.

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So this is a normalized vector,

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or when we say
normalizing a vector.

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So let's go ahead
and do just that.

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So back in our code,

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let's go to Visual Studio.

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And now let's see where do we

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have our velocity being added?

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It's right here.

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So I'm going to add a,

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another line or I'm sorry,

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before we add this
to the velocity,

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I'm going to take

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the movement input and I'm
going to normalize it.

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Save that.

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So now when we go
back into our game,

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and by the way, the
whole process here,

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you know that this one
is just taking a value.

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Movement speed doesn't change.

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So the only variable that's

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changing is the movement input.

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That's why I normalize
the movement input.

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Hence, the velocity
stays the same.

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So just if you were confused,

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why we're changing the movement
input, not the velocity.

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So we go back in here,

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we run our game.

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And now you can see we
walked to the right.

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It Stan, to the
left is still 10,

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up, Stan down, it's 10.

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When we move in a diagonal.

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There we go.

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You can see that
it is still done.

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How cool is that?

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It's amazing.

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On a final note, maybe
you want to keep it.

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Maybe you want to
make the player

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faster as you move diagonally.

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That's not a problem.

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You can do whatever you want.

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This is your game,

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add your own flavor to it.

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But this is a battle
game development habit

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that you should have as

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you progress through
your journey.

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Well, that said this was
a quick and short video.

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Make sure to commit
your changes.

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I forgot to commit them
last time, but no worries.

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I can keep this player
controller as we've only

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changed the debug
dot log in here.

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And the normalized,
I can stage these,

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commit these changes and
then commit the other ones.

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So, well that said,

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I hope you enjoy it.

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And I believe this is the end of

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section 2 where we are going
to be setting up our player.

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In the next section,

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we are actually
going to start using

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our gun to shooting by
adding shooting mechanics.

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So I'll see you then.