Setting_up_inflation_features - CanInBad/KK_wiki GitHub Wiki

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title: Setting up inflation features contributors:

• Naelstrof

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KoboldKare has many alterations that affect player characters, while you

don't need to create any to play right away, the game is much more fun

when characters have the inflation features listed below.

The blendshape names don't need to match, as you specify them manually

in-game while setting up your character.

On the Kobold component (and in various other places), there's a set of

Inflaters. For example the Belly inflater, Fatness inflater, Boobs

inflater, and the Size inflater to name a few.

These are essentially tween handlers that make sure that things inflate

in a pleasing manner (with a fun bouncy curve). What's cool about them

is that they don't care what they send the tween data to, so you can

have a character react in any manner to the incoming inflation data.

Using built-in inflatable listeners, you can have a model respond in

many ways-- most inflations will be driven by blendshapes, but in some

cases you may want to adjust jiggle settings, bone rotations,

transforms, or drive Animation parameters.

You may add as many inflatable listeners as you want to an Inflater, it

uses SerializeReference to embed listeners into the prefab. The rest of

this page will be used to describe some basic inflater configurations

for characters.

I do have a trick for creating radically different blendshapes, taught

to me by my friend Eugene

first start with creating a cube.

Create_Cube.png

Then delete all but one edge, add an edge loop so that you have three

verts in a line.

<img src="Single_edge_with_3_verts.png"

title="Single_edge_with_3_verts.png" />

Single_edge_with_3_verts.png

Then I convert it to a Curve, increase the bevel depth, and set the

resolution to 0.

<video src="Blender_KABRXk6Zle.mp4" title="Blender_KABRXk6Zle.mp4"

controls="">Video

Blender_KABRXk6Zle.mp4

Then I pinch off the ends with the Curve Radius tool, add a Mirror

Modifier, Weld Modifier, and a Subdivision Modifier

CurveBlob.png

Now this curve can be used to block out various organic shapes, like a

breast, or a fat suit, muscles, or whatever else.

<img src="Lilith_bigger_breast_blockout.png"

title="Lilith_bigger_breast_blockout.png" />

Lilith_bigger_breast_blockout.png

Simply by moving the verts around, adjusting their radius, and

subdividing when you need more control points, you can very quickly

block out the new shapes that the character will exhibit.

Now that you have the shape that you want the character to have. I like

to use the shrinkwrap modifier to give me a starting point.

First, create a vertex group that represents what areas you wish to be

shrink-wrapped.

<img src="Lilith_breast_shrinkwrap_weights.png"

title="Lilith_breast_shrinkwrap_weights.png" />

Lilith_breast_shrinkwrap_weights.png

Second, we need to make sure our blockout is manifold, with only one

inside, and one outside. The easiest way to do this is to add a Remesh

modifier and set the voxel size low.

<img src="Lilith_remeshed_breast_blockout.png"

title="Lilith_remeshed_breast_blockout.png" />

Lilith_remeshed_breast_blockout.png

Third, we want to work on a duplicate of the original model, this is so

we can repeatedly apply the shrink wrap modifier as we get it closer to

the final shape. You'll need to delete all shape-keys on the duplicate

so we can apply the shrink wrap modifier.

<img src="Lilith_copy_blendshape_delete.png"

title="Lilith_copy_blendshape_delete.png" />

Lilith_copy_blendshape_delete.png

Finally, we can add a shrinkwrap modifier to the model, using the vertex

group we created earlier as a filter, with our remeshed blockout as the

target. The shrink wrap won't let us target the curve, so we'll have to

quickly convert the blockout to a mesh. You should back up the curve

before you do this though just in case you want to adjust it later.

<img src="Lilith_shrinkwrap_start.png"

title="Lilith_shrinkwrap_start.png" />

Lilith_shrinkwrap_start.png

From here our goal is to adjust the vertices until they rest properly on

the blockout we made. I like to start by proportional editing the

breasts out to match.

<video src="Blender_Dt35q6t7CP.mp4" title="Blender_Dt35q6t7CP.mp4"

controls="">Video

Blender_Dt35q6t7CP.mp4

Each time we make a large adjustment, we can duplicate and apply the

shrinkwrap modifier in order to update the true underlying shape of the

vertices.

With the true underlying shape, we can use the Slide Relax tool to slide

the vertices around on the surface of the blockout to make them line up

nicely, and to evenly distribute the polygons. Holding shift with the

Slide Relax tool "smooths" things, otherwise it slides verts around.

<video src="Blender_YaVeAuOIRx.mp4" title="Blender_YaVeAuOIRx.mp4"

controls="">Video

Blender_YaVeAuOIRx.mp4

Anytime the slide relax tool seems to be working funny, you may need to

re-apply the shrink wrap to update the underlying vert positions.

When you're done adjusting the shape and making it look really nice, you

can select it, then your original mesh, and use the Join as Shapes

option under the Shape Keys data sub menu.

<img src="Lilith_join_as_shapes.png"

title="Lilith_join_as_shapes.png" />

Lilith_join_as_shapes.png

Breasts in KoboldKare are the primary way to distinguish gender, and go

from flat-chested to infinitely large. The current available Breast

Inflators assume that the default shape is with regular sized feminine

breasts, with a shape to make them flat, another shape to make them

large, and a bone to inflate them further.

Takes the character from neutral to flat-chested, one per breast. I have

no special tricks with this one, I just use proportional editing and the

edge-slide relax tool to flatten the chest and make it look as natural

as I can.

<img src="Lilith_FlatChestLeftRight.png"

title="Lilith_FlatChestLeftRight.png" />

Lilith_FlatChestLeftRight.png

If you have a perfectly symmetrical model, you can end the shape name

with "LeftRight", which will split it into two shapes upon import into

Unity. If your model is not perfectly symmetrical, you'll need to make a

unique shape for each breast.

Takes the character from neutral to large-breasted, one per breast. It's

best that this shape prepares the breast to be scaled by a bone that

it's weighted to, since this shape is fully triggered before it begins

scaling the bone.

<img src="Lilith_BiggerBreastLeftRight.png"

title="Lilith_BiggerBreastLeftRight.png" />

Lilith_BiggerBreastLeftRight.png

On the Kobold component of your prefab, add a InflatableBreast listener

to the `Boobs Inflator` listener list.

Base Breast transform is the bone that is scaled.

Jiggle Bone Breast Transform is actually used to look up the JiggleRig

AND JiggleSkin to change it's blend settings. It's set to Nipples in

this configuration since that's a JiggleSkin, and a child of the

JiggleRig.

The Animator receives a float called "BreastSize" that you can use to

animate the breasts spreading apart.

You don't need a jiggle skin if you don't have one, feel free to leave

it blank.

<img src="Lilith_breast_inflator_settings.png"

title="Lilith_breast_inflator_settings.png" />

Lilith_breast_inflator_settings.png

This inflater is to add a chubbiness to the character, as if they ate

too much food.

Lilith_fatsuit_shape.png

I used the blockout technique described above to do it.

<img src="Lilith_fatsuit_blockout.png"

title="Lilith_fatsuit_blockout.png" />

Lilith_fatsuit_blockout.png

Since the fatten effect is so simple, it only uses a

InflatableBlendshape listener targeting the fatten blendshape.

<img src="Lilith_fatness_inflater_setup.png"

title="Lilith_fatness_inflater_setup.png" />

Lilith_fatness_inflater_setup.png

I purposefully unchecked "Clamped", which allows the blendshape to be

overdriven for extremely fat looking shapes. This tends to break the

intended shape so it's up to you if you want the blendshape clamped or

not.

This inflater is used for when the character is being filled (and

overfilled) with fluids. It's somewhat complicated because it's done in

two-stages.

In order to avoid adding more bones and bone weights, its done entirely

through blendshapes.

The first shape is to attempt to make the belly as spherical as

possible. This is so that the next shape can expand it spherically with

no artifacting.

<img src="Lilith_inflate1_shape.png"

title="Lilith_inflate1_shape.png" />

Lilith_inflate1_shape.png

I again used the blockout technique, except I used a sphere as the

underlying shape.

<img src="Lilith_inflate1_blockout.png"

title="Lilith_inflate1_blockout.png" />

Lilith_inflate1_blockout.png

The second shape is only triggered while the first shape is already in

full-effect. This means that the Inflate2 blendshape needs to be an

additive shape, taking the sphere that was made from Inflate1 and making

it expand. It will never be triggered by itself (and it's only shown in

the video below to help display that it's not intended to be triggered

by itself.)

<video src="Blender_s4oNEFiZNi.mp4" title="Blender_s4oNEFiZNi.mp4"

controls="">Video

Blender_s4oNEFiZNi.mp4

How I created the additive shape, is by taking the original blockout

shape for Inflate1 and making it larger. Then creating a completely

regular shape key with it.

<img src="Lilith_inflate2_non_additive.png"

title="Lilith_inflate2_non_additive.png" />

Lilith_inflate2_non_additive.png

Lets call it Inflate2 Non-Additive for now.

Then to make it into an additive shape, all we need to do is select

every vertex in edit mode with Inflate2 Non-Additive selected in the

Shape Keys tab, then do a Blend From Shape command. Select Inflate1 as

the target shape, makes sure "Add" is checked, and set the blend amount

to -1.

<img src="Lilith_inflate2_additive.png"

title="Lilith_inflate2_additive.png" />

Lilith_inflate2_additive.png

Now we have it so that Inflate1 can be fully triggered, then Inflate2

can be triggered from any value from 0 to 10ish to get ridiculous sized

inflations without messing up the round shape!

It uses the two shapes we set up earlier, plus an optional JiggleSkin to

blend. The transform is used to look up which JiggleSkinZone to adjust.

<img src="Lilith_inflate_config.png"

title="Lilith_inflate_config.png" />

Lilith_inflate_config.png

This one is super simple! You could make it more complex and drive some

monstrous or spikey shapes in combination-- though right now all I do is

set up a InflatableTransform listener targeting the root of the prefab

so it gets bigger.

Lilith_size_inflater.png

Right now in KoboldKare, inflaters are hard-coded, but since they are

also totally optional, it's not unreasonable to add some various extra

inflaters in the base-game. Make a github issue and we'll see what we

can do!