Babylon.js/assets/particles/systems/fire.json

{
  "type": "fire",
  "emitterType": "box",
  "capacity": 2000,
  "textureFile": "flare.png",
  "minEmitBox": { "x": -0.5, "y": 1, "z": -0.5 },
  "maxEmitBox": { "x": 0.5, "y": 1, "z": 0.5 },
  "color1": { "r": 1, "g": 0.5, "b": 0, "a": 1.0 },
  "color2": { "r": 1, "g": 0.5, "b": 0, "a": 1.0 },
  "colorDead": { "r": 0, "g": 0, "b": 0, "a": 0.0 },
  "minSize": 0.3,
  "maxSize": 1,
  "minLifeTime": 0.2,
  "maxLifeTime": 0.4,
  "emitRate": 600,
  "blendMode": 0,
  "gravity": { "x": 0, "y": 0, "z": 0 },
  "direction1": { "x": 0, "y": 4, "z": 0 },
  "direction2": { "x": 0, "y": 4, "z": 0 },
  "minAngularSpeed": 0,
  "maxAngularSpeed": 3.141592653589793,
  "minEmitPower": 1,
  "maxEmitPower": 3,
  "updateSpeed": 0.007
}