Tutorial: From Blender to FPS Control (Unity) Video Lecture | How to make Video Games: Game Editor Tutorial - Game Development

if you like using blender to create your
game assets you appreciate this video
we've asked the guys from CG kooky calm
to showcase how to set up a scale one
blender so that your assets fit the FPS
control plugin for the Unity game engine
exactly on our opinion GT cooky has some
of the best game art tutorials in the
industry so we're honored that they're
helping you out
enjoy hello everyone this is Jonathan
Williamson from CG kooky calm and in
this video I'm going to show you how to
export assets from blender to unity for
use in FPS control with correct relative
scaling such that all of our assets that
we create in blender just automatically
fit the scene scale that we want in our
FPS control scene so first of all in
blender we have this low poly asset and
we want to bounce it over to unity so
first let's check what we have in unity
as far as world size so looking in the
shellshock scene what I'm using here is
the quick distance tool that was written
by Wes McDermott it's available for free
in the unity asset store and it just
easily allows me to measure from one
point to another point to get a good
frame of reference for the size of my
objects so in this case I've chosen this
door frame this makes it really easy to
see what the scale is you know something
that we walk through every single day
and so using this I can get a good sense
for how big all of my other objects
should be and now if we look at the
distance here if we just select our
point we can see that from the bottom to
the top of the door frame is
approximately 2.3 unity units so this is
one or think of it in terms of cubes
within unity so for example if you
create a game object and we'll just do a
cube and you position it right there at
the base of the floor something you know
approximately like this the cube is one
by one by one and so this doorway is
approximately two and a third cubes tall
and so if we think of it like this this
makes it really easy to then see how
tall the door is so it's two point three
two units tall so what we want to do is
then see what this translates to in
blender so jumping back to blender let's
first see how tall our asset currently
is and if we
hittin to bring up our properties panel
we can see that using the default units
in blender that our asset is three point
nine five units tall well this doesn't
necessarily mean anything to us yet
until we realize that blender along with
unity also works in meters so even
though they have their own units of one
unit one unit you know in it in one
unity unit and then one blender unit
those are actually equal and so one
blender unit equals one unity unit which
also happens to equal one meter so this
is a really really tall fire hydrant and
if we can verify this by looking at
metric we can see that our meters here
is three three meters and ninety five
centimeters noting that I have separate
units enabled or under imperial we've
got twelve feet eleven and a half inches
so this is really really tall this is
much taller even than most doorways and
if we assume for a second than most fire
hydrants are somewhere between you know
around two and a half feet tall just
estimating there this is you know four
or five times taller than we want so
what we want to do is go and just scale
this down first note that my origin
point is right here at the very bottom
center of the object allowing me just to
scale it like this the other thing this
allows me to do is when I move it around
if I enable grid snapping there's set G
and then maybe shift disease just move
it along the X and the y then I can
easily snap to any unit and this also
works in unit even allowing me to keep
everything nicely organized snap to the
grid so you want to be sure that your
your asset is has the origin point right
there at the base so now we can simply
scale this down and again I'm gonna make
it approximately two-and-a-half feet
so I'll just scale it down into two feet
six inches right about there
like that and then just left-click and
then we can zoom right in on it and the
other thing that we need to do now is to
apply our scales right now the scale of
our object is point one nine three so
really all we've done is we've shrunk
our object but we haven't actually told
blender that it's smaller so what we
need to do is we need to apply the
transforms such that blender knows that
that's the actual size the object not
just a shrunken version of the object if
that
any sense and so we're just going to hit
ctrl a and apply the scale you'll see
that the scale goes right back to 1 to 1
to 1 but our actual size the dimensions
of the object in relation to the world
is still the same at 2 feet 6 inches so
we're now ready to export so I can now
just go up to file and export and in
this case I'm gonna use colada you can
really use colada or FBX or obj
personally I like colada because it
handles the textures really well and
we'll go ahead and transfer my textures
right into my export folder no problem
so here in the export settings there's a
couple of settings that I need to enable
the first one is selection only this
just ensures that if I have any other
assets in my scene which in this case I
have a couple different lamps for doing
the GLSL shading inside blender this way
it'll only export what's selected and
then I also want to under the texture
options enable include material textures
this way it's going to first copy the
textures and it the textures it's going
to copy are those that are applied to my
materials that I've already created in
blender you can also choose the ones
that are added to the UV textures or
only the active UV layer so I'll just
choose include material textures I can
use the default name and I will click
export Colada now I can just bounce
right over to unity and it'll pull it
right in
so then jumping into my assets folder
right here we can see that I now have a
fire hydrant folder and inside this I
have a fire hydrant model and then the
textures that are associated with it if
we look over here in the preview we can
see it's just gray at the moment and
this is because right now it's not
grabbing the textures it's not finding
them because they're in the wrong
location so if we just choose change our
material naming from base texture name
to models material and then click apply
that will pull them right in and
automatically assign them correctly now
it's only a sign that a fuse because
that's the only shader we've got set up
but that's alright the other thing that
you want to check is just be sure that
your scale factor is set to 1 since
we've assigned the scale in blender and
we know that those two correlate then we
want to ensure that we're actually using
the scale in blender and not multiplying
it times some value oftentimes if you're
exporting with FBX this default scale
factor and nearly when it imports the
asset will be point zero 1 and so your
object will be really really really tiny
and so just be sure that this is one
unless you have a specific reason
otherwise and so now we can just drop
our fire hydrant right here into our
doorway and you can see it places it if
we zoom in here and just grab our
measurement tool we can just grab these
move them down approximately to the
right position I'm not going to get it
too crazy accurate just something
approximately close so it looks to be
you know somewhere in the range of 0.7
eight units if we look inside you
blender switch back over to the none
units we can see that our fire hydrant
is exactly 0.76 3 units tall and in
unity this is actually accurate because
really our scale here or our measurement
is not exact and there we go so if we
were to go in and get this absolutely
exact then you can see that they match
perfectly so now that we've set up our
scene and we understand what the scale
differences between blender and unity
and how to measure lows in effect since
the scales are exactly the same it makes
it really easy we can now create
everything for our FPS control scene at
exact scale and not have to worry about
objects being either too small or too
large or inconsistent with one another