ZacharyZhang-NY
8be66c09f2
Palette cycling, sky, sun and moon, clouds, starfield, rain, snow, petals, leaves, fireflies, waterfall, ocean, campfire, lava, aurora, lightning, mountains and a season scene; scanlines, vignette, screen shake, flash, dither fades, iris wipes, dissolves, mosaics, glitches, sparkles, explosions and confetti. Home opens on a live scene in the palette's season and a strip of all eight palettes. pixel adds Canvas.Cycled, Sprite.At, SpriteOf, Kit.Toward and Kit.Shot, which spends a cue under Reduce Motion so it never replays; display exports Reduce. Gallery grids and the sidebar are one Tab stop each.
39 lines
1019 B
Go
39 lines
1019 B
Go
package fx
|
|
|
|
import (
|
|
"github.com/egoist/mygo/ui"
|
|
|
|
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
|
|
)
|
|
|
|
type FirefliesOptions struct {
|
|
// Width and Height are dots; zeros mean 160 by 96.
|
|
Width, Height int
|
|
Label string
|
|
}
|
|
|
|
// Fireflies wander and glow: bright, dim, then dark a while.
|
|
func Fireflies(c *ui.Context, o FirefliesOptions) *ui.Element {
|
|
k := pixel.K(c)
|
|
w, h := size("Fireflies", o.Width, o.Height, 160, 96)
|
|
return box(c, k, o.Label, w, h).Draw(func(p *ui.Painter, r ui.Rect) {
|
|
g := k.Canvas(p, r)
|
|
g.Clip(0, 0, g.W, g.H, func() { fireflies(g, g.Step(8)) })
|
|
})
|
|
}
|
|
|
|
func fireflies(g pixel.Canvas, step int) {
|
|
for i := range max(3, g.W*g.H/600) {
|
|
x := rnd(i, 70)%g.W + sway(step+rnd(i, 71), 40+rnd(i, 72)%24, 8)
|
|
y := rnd(i, 73)%g.H + sway(step+rnd(i, 74), 28+rnd(i, 75)%20, 5)
|
|
switch t := wrap(step+rnd(i, 76), 16); {
|
|
case t < 6:
|
|
g.Rect(x-1, y, 3, 1, pixel.Good)
|
|
g.Rect(x, y-1, 1, 3, pixel.Good)
|
|
g.Dot(x, y, pixel.Warn)
|
|
case t < 9:
|
|
g.Dot(x, y, pixel.Good)
|
|
}
|
|
}
|
|
}
|