Spell Fluid

Spellfluid is a magical fluid simulator written in Lua, inspired by GridFluids, Fluid–Euler Particle (University of Freiburg). It simulates flowing, glowing, spell-like fluids using a simple grid + particle system, perfect for games, visual effects, or experiments.

Features

• Hybrid Eulerian (grid) + Lagrangian (particle) simulation

• Lightweight — pure Lua, no external dependencies

• Easy to modify and embed into other Lua projects

• Designed for magical / energy visual effects

• Realistic motion with customizable parameters (viscosity, diffusion, etc.)

Usage

Clone and run ( Must have Love2D Installed ) [ FASTER ]:

git clone https://github.com/JakeOJeff/Spellfluid.git
cd Spellfluid
love main.lua

OR

Visit the Online Demo at : https://jakeojeff.github.io/fluid-web ( May have performance issues )

Controls:

Left click / drag → Add fluid or energy Right click / drag → Invert Fluid Middle Mouse / Drag → Move the Circle P → Switch Density Map C → Reset the simulation 1, 2, 3, 4 → Different types of Flow

( FOR DEVELOPERS )

• Adjust simulation settings in main.lua or fluid.lua:

fluid:setViscosity(0.002) fluid:setDiffusion(0.001) fluid:setResolution(128)

• Integrate it into your game or project by calling:

fluid:update(dt) fluid:draw()

Important Source : https://cg.informatik.uni-freiburg.de/intern/seminar/gridFluids_fluid-EulerParticle.pdf