Hyle Studio Log in Register
Simulation · Published v2

Ember Archipelago

A spreading fire crosses a planted island, leaving charcoal behind. Nearby heat ignites trees; each burning cell consumes its fuel. Recompile to restore the forest, or paint Fire to start another front.

By @hyle · 3 source files · 0 dependencies

Open in Studio
No preview

Inside this simulation

Every named building block is public and reusable. These are the exact versions published with this simulation.

Properties 2

Fuel@hyle · v1Heat@hyle · v1

Behaviors 3

BurnFuel@hyle · v1Charcoal@hyle · v1Ignite@hyle · v1

Appearance 3

Char@hyle · v1Flame@hyle · v1Forest@hyle · v1

Models 3

Ash@hyle · v1Fire@hyle · v1Pine@hyle · v1

Source

// Separate phases let ignition observe burning neighbors before fuel is consumed.
property Fuel { fuel: Float<1.0> [0.0 1.0]; }
property Heat { heat: Float<1.0> [0.0 1.0]; }
model Ash : Fuel { fuel<0.0>; };
model Fire : Fuel, Heat;
model Pine : Fuel;
world { dimensions 3; cell Cube; neighborhood VonNeumann; }
behavior Ignite for Fuel { transform into Fire when sum n in neighbors[Heat] { n.heat } > 0.25 { set target.fuel = self.fuel; set target.heat = 1.0; } }
behavior BurnFuel for Fuel + Heat { update { set self.fuel = max(0.0, self.fuel - 0.06); set self.heat = max(0.1, self.fuel); } }
behavior Charcoal for Fuel + Heat { transform into Ash when self.fuel < 0.08; }
phase ignition { run Ignite on Pine; }
phase combustion { run BurnFuel on Fire; }
phase cooling { run Charcoal on Fire; }
visual Char for Fuel { color { rgba(0.16, 0.12, 0.20, 1.0) } }
visual Flame for Fuel + Heat { color { rgba(1.0, 0.12 + self.fuel * 0.65, 0.02 + self.fuel * 0.08, 1.0) } }
visual Forest for Fuel { color { rgba(0.10, 0.43 + self.fuel * 0.28, 0.21, 1.0) } }
visualize Ash with Char;
visualize Fire with Flame;
visualize Pine with Forest;