1{
2   "MaxCount": 200,
3   "Drawable": {
4      "Type": "SkCircleDrawable",
5      "Radius": 8
6   },
7   "Code": [
8      "void effectSpawn(inout Effect effect) {",
9      "  effect.lifetime = 2;",
10      "}",
11      "",
12      "void effectUpdate(inout Effect effect) {",
13      "  if (effect.age < 0.25 || effect.age > 0.75) { effect.rate = 0; }",
14      "  else { effect.rate = 200; }",
15      "}",
16      "",
17      "void spawn(inout Particle p) {",
18      "  int idx = int(rand(p.seed) * 4);",
19      "  p.color.rgb = (idx == 0) ? float3(0.87, 0.24, 0.11)",
20      "              : (idx == 1) ? float3(1.00, 0.90, 0.20)",
21      "              : (idx == 2) ? float3(0.44, 0.73, 0.24)",
22      "              :              float3(0.38, 0.54, 0.95);",
23      "",
24      "  p.lifetime = (1 - effect.age) * effect.lifetime;",
25      "  p.scale = mix(0.6, 1, rand(p.seed));",
26      "}",
27      "",
28      "void update(inout Particle p) {",
29      "  p.color.a = 1 - p.age;",
30      "",
31      "  float a = radians(rand(p.seed) * 360);",
32      "  float invAge = 1 - p.age;",
33      "  p.vel = float2(cos(a), sin(a)) * mix(250, 550, rand(p.seed)) * invAge * invAge;",
34      "}",
35      ""
36   ],
37   "Bindings": []
38}