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.
28 lines
828 B
Go
28 lines
828 B
Go
package fx
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import (
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type ScreenShakeOptions struct {
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// Cue shakes the content each time it changes.
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Cue int
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// Amount is the widest jolt in dots; zero means 3.
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Amount int
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}
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// quakes are the jolts, a step each, in Amount thirds.
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var quakes = [...][2]int{{3, -2}, {-3, 2}, {2, 3}, {-3, -2}, {2, 1}, {-1, -2}, {1, 1}, {-1, 0}, {0, 0}}
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// ScreenShake jolts its content both ways, settling as it goes.
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func ScreenShake(c *ui.Context, o ScreenShakeOptions, content func()) *ui.Element {
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k := pixel.K(c)
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a := pixel.Or("ScreenShake Amount", o.Amount, 3)
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e := ui.Box(c)
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q := quakes[k.Shot(c, e, o.Cue, 15, len(quakes)-1)]
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dx, dy := q[0]*a/3, q[1]*a/3
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return e.Padding(k.D(a+dy), k.D(a-dx), k.D(a-dy), k.D(a+dx)).Children(content)
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}
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