前回、シーンの作成方法をご紹介しましたが、リアルなシーン作成に欠かせないのが、液体表現だと思います。涎、尿など、関連する液体は多様です。こちらの表現は、静止画の場合はいくつかありますが、アニメーションの場合はFluidというmod一択だと思います。Fluidは物理演算を用いた液体表現modです。
Last time, I showed you how to create scenes, but I believe that realistic liquid effects are essential for creating realistic scenes. There are many different types of liquids involved, such as saliva and urine. While there are several options for rendering these effects in still images, when it comes to animation, I think the “Fluid” mod is the only choice. Fluid is a mod that uses physics simulations to render liquids.
Fluidも設定はそれほど難しくはなく、アイテムとして呼び出して、置きたい場所に設置し、「i」キーを押して細かい設定をするだけです。
Setting up Fluid isn’t particularly difficult: simply call it up as an item, place it where you want it, and press the “i” key to adjust the detailed settings.
Fluidは作者により以下の10種類が用意されていますので、状況に応じて使い分けることができます。
The creator of Fluid has provided the following 10 types, so you can choose the one that best suits your situation.
- [fluid]01:濃い目のドロっとした大量の液体が、一定間隔で流れ落ちる
[fluid]01: A large amount of thick, viscous liquid flows down at regular intervals - [fluid]01_loop:01が絶え間なく流れ落ちる
[fluid]01_loop: 01 flows down continuously - [fluid]02:少し薄目のドロドロ液体が、一定間隔で流れ落ちる
[fluid]02: A slightly thinner, viscous liquid flows down at regular intervals - [fluid]02_loop:02が絶え間なく流れ落ちる
[fluid]02_loop: 02 flows down continuously - [fluid]03:サラサラの液体が、一定間隔で流れ落ちる
[fluid]03: A thin, runny liquid flows down at regular intervals - [fluid]03_loop:03が絶え間なく流れ落ちる
[fluid]03_loop: 03 flows down continuously - [fluid]drip:雨粒上の液体が一定間隔で落ちる
[fluid]drip: Liquid in the form of raindrops falls at regular intervals - [fluid]drip_wax:dripより大き目で粘着力のありそうな液体が一定間隔で落ちる
[fluid]drip_wax: A liquid that appears slightly larger and stickier than “drip” falls at regular intervals - [fluid]shoot:水鉄砲のように高スピードで、一定間隔で液体が発射される
[fluid]shoot: Liquid is fired at high speed, like a water gun, at regular intervals - [fluid]shoot_fast:shootが絶え間なく発射される
[fluid]shoot_fast: “shoot” is fired continuously
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| 左から From left to right, [fluid]01_loop, [fluid]02_loop, [fluid]03_loop, [fluid]drip, [fluid]wax, [fluid]shoot_fast |
また、fluidには、液体アイテムとセットで、液体との衝突を表現するためのColliderがついています。Colliderも8つありまして、それぞれ形や衝突の仕方が異なります。
Additionally, each fluid comes with a Collider that works in conjunction with the liquid item to simulate collisions with the liquid. There are eight Colliders in total, each with a different shape and collision behavior.
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| 左から From left to right, [collider]cube, [collider]sphere, [collider]capsule, [collider]chara_capsule, [collider]bucket, [collider]head |
Of these, [collider]capsule and [collider]chara_capsule have nearly identical shapes, but the movement of the liquid after a collision differs. [collider]chara_capsule seems to stay in place more often.
では、よく使う場面ごとに、Fluidの設定をご説明します。
Now, I’ll explain the Fluid settings for each common scenario.
零れ落ちる白い液体 [Dripping White Liquid
[fluid]01 設定値(「i」キー押下で設定):上から300/2/0.5/0.8/1/3/0.18
[fluid]01 Settings (set by pressing the “i” key): From the top: 300/2/0.5/0.8/1/3/0.18
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| Fluid設定値 Fluid Settings |
滴る半透明の液体 Dripping Translucent Liquid
[fluid]03_loop 設定値(「i」キー押下で設定):上から680/1.5/0.5/0.1/2/2/0.12
[fluid]03_loop Settings (set by pressing the “i” key): From top to bottom: 680/1.5/0.5/0.1/2/2/0.12
[fluid]shoot_fast settings (set by pressing the “i” key): From top to bottom: 175/1.2/8/0.12/30/1/0.12
ついでに、女性の「頭中心」に[Collider]head、「口」に[Collider]sphereを親子付けして、Fluidの液体が「当たる」ようにすると、よりリアルになります。
Additionally, if you parent a [Collider]head to the “center of the head” and a [Collider]sphere to the “mouth” of the female character so that the Fluid liquid “hits” them, it will look more realistic.
| Fluid設定値 Fluid Settings |
Note that when you set up a parent-child relationship between Fluid and elements like Scripted Dick to synchronize them with the animation, the tip of the object may move violently up and down during the climax. This can cause the nozzle and the fluid jet to become misaligned, resulting in an animation that feels anticlimactic. To mitigate this misalignment, we recommend linking the S-Dick’s `stick_07` to the Fluid object itself using `NodesConstraints`—this is especially recommended if you’re aiming for a more realistic look.
[fluid]shoot_fast settings (set by pressing the “i” key): From the top: 80/0.7/8/0.1/30/4/0.12
Effect of Liquid Spraying Out from Inside Upon Firing
外国のアニメ等で見られる、中で発射した際に少量の液体が勢いよく噴き出すシーンも、Fluidで表現可能です。ここでは、Fluidと、それに付随する専用Colliderの[collider]capsuleと[collider]bucketを使います。下記の画像のような配置で、状況を再現します。
Scenes where a small amount of liquid sprays out forcefully from inside upon firing—as seen in foreign animations—can also be created using Fluid. Here, we’ll use Fluid along with its dedicated Colliders: [collider]capsule and [collider]bucket. We’ll recreate the effect using the setup shown in the image below.
Insert a rod-shaped Collider into a pot-like Collider and have the Fluid liquid spurt out from the tip of the rod Collider. Ideally, we’d want to shoot the liquid toward the back of the jar, but since it won’t come out that way, the key is to shoot it toward the outside of the jar instead. (This is probably different from how it actually works, but this method works better.)
これで液体表現も加わり、さらにリアルなシーンになるはずです。念のため、シーンデータも貼っておきます。
With this liquid effect added, the scene should look even more realistic. Just to be safe, I’ve included the scene data below.
*Please refrain from reprinting or modifying the images and videos in this blog.








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