resources/particles/curves.json

{
   "MaxCount": 1000,
   "Drawable": {
      "Type": "SkCircleDrawable",
      "Radius": 2
   },
   "EffectCode": [
      "void effectSpawn(inout Effect effect) {",
      "  effect.rate = 200;",
      "  effect.color = float4(1, 0, 0, 1);",
      "}",
      ""
   ],
   "Code": [
      "void spawn(inout Particle p) {",
      "  p.lifetime = 3 + rand(p.seed);",
      "  p.vel.y = -50;",
      "}",
      "",
      "void update(inout Particle p) {",
      "  float w = mix(15, 3, p.age);",
      "  p.pos.x = sin(radians(p.age * 320)) * mix(25, 10, p.age) + mix(-w, w, rand(p.seed));",
      "  if (rand(p.seed) < 0.5) { p.pos.x = -p.pos.x; }",
      "",
      "  p.color.g = (mix(75, 220, p.age) + mix(-30, 30, rand(p.seed))) / 255;",
      "}",
      ""
   ],
   "Bindings": []
}