skia2/resources/particles/raincloud.json
Brian Osman 2ae02492a7 Remove use of do-while loops from particle examples
This was unnecessary (closed-form unit-disc picking is simpler), and
these loops don't meet the strict ES2 standards that we'll be applying
to the interpreter soon.

Bug: skia:11095
Change-Id: Ic2617c2807fe49d57ff8e4d57d70b9ed1f015916
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/348895
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2020-12-30 21:30:40 +00:00

101 lines
2.6 KiB
JSON

{
"MaxCount": 128,
"Drawable": {
"Type": "SkCircleDrawable",
"Radius": 2
},
"EffectCode": [
"void effectSpawn(inout Effect effect) {",
" if (effect.loop == 0) {",
" cloud(true);",
" }",
" effect.color = float4(0.1, 0.1, 1.0, 1.0);",
" effect.rate = 10;",
"}",
""
],
"Code": [
"void spawn(inout Particle p) {",
" p.lifetime = 4;",
" p.pos.x = mix(-50, 50, rand(p.seed));",
" p.vel.y = 50;",
"}",
"",
"void update(inout Particle p) {",
" p.vel.y += 20 * dt;",
" if (p.pos.y > 150 && p.scale > 0) {",
" p.scale = 0;",
" splash(false);",
" }",
"}",
""
],
"Bindings": [
{
"Type": "SkEffectBinding",
"Name": "cloud",
"MaxCount": 60,
"Drawable": {
"Type": "SkCircleDrawable",
"Radius": 16
},
"EffectCode": [
"void effectSpawn(inout Effect effect) {",
" effect.color = float4(1, 1, 1, 1);",
" effect.rate = 30;",
"}",
""
],
"Code": [
"float2 circle(inout float seed) {",
" float r = sqrt(rand(seed));",
" float a = rand(seed) * 6.283185;",
" return r * float2(sin(a), cos(a));",
"}",
"",
"void spawn(inout Particle p) {",
" p.lifetime = 2.5;",
" p.pos = circle(p.seed) * float2(50, 10);",
" p.vel.x = mix(-10, 10, rand(p.seed));",
" p.vel.y = mix(-10, 10, rand(p.seed));",
"}",
"",
"void update(inout Particle p) {",
" p.color.a = 1 - (length(p.pos) / 150);",
"}",
""
],
"Bindings": []
},
{
"Type": "SkEffectBinding",
"Name": "splash",
"MaxCount": 8,
"Drawable": {
"Type": "SkCircleDrawable",
"Radius": 1
},
"EffectCode": [
"void effectSpawn(inout Effect effect) {",
" effect.burst = 8;",
" effect.scale = 1;",
"}",
""
],
"Code": [
"void spawn(inout Particle p) {",
" p.lifetime = rand(p.seed);",
" float a = radians(mix(-80, 80, rand(p.seed)) - 90);",
" p.vel.x = cos(a) * 20;",
" p.vel.y = sin(a) * 20;",
"}",
"",
"void update(inout Particle p) {",
" p.vel.y += dt * 20;",
"}",
""
],
"Bindings": []
}
]
}