93 lines
1.9 KiB
Go
93 lines
1.9 KiB
Go
package elements
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import (
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"math"
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"mover/assets"
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"mover/gamedata"
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"github.com/hajimehoshi/ebiten/v2"
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)
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const (
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SPLASH_DIM = 128
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SPLASH_ELEMS = 10
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SPLASH_PRIMARY_SIZE = 46
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)
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type Splash struct {
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Sprite *ebiten.Image
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position gamedata.Coordinates
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cycle int
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opacity float32
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}
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func NewSplash() *Splash {
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sp := &Splash{
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Sprite: ebiten.NewImage(SPLASH_DIM, SPLASH_DIM),
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cycle: 0,
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opacity: 1,
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}
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return sp
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}
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func (sp *Splash) Update() error {
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sp.cycle++
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sp.opacity = sp.opacity - float32(sp.cycle)/(60*60)
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return nil
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}
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func (sp *Splash) Draw() {
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sp.Sprite.Clear()
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/*
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for i := SPLASH_ELEMS; i > 0; i-- {
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percent := float64(i) / SPLASH_ELEMS
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dx := 1 / percent * math.Cos(float64(sp.cycle)/(math.Pi*2))
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dy := -float64(i - SPLASH_ELEMS) //math.Sin(float64(sp.cycle) / (math.Pi * 2))
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op := &ebiten.DrawImageOptions{}
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op.GeoM.Translate(-SPLASH_DIM/2, -SPLASH_DIM/2)
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op.GeoM.Scale(percent, percent)
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//op.GeoM.Rotate(-(float64(sp.cycle - i*30)) / (math.Pi * 2))
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op.GeoM.Translate(SPLASH_DIM/2+dx, SPLASH_DIM/2+dy)
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//op.ColorScale.ScaleAlpha(float32(percent))
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sp.Sprite.DrawImage(assets.ImageBank[assets.Splash], op)
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}*/
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for i := 0; i < SPLASH_ELEMS; i++ {
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percent := float64(SPLASH_ELEMS-i) / SPLASH_ELEMS
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dy := -float64(i)*4 - float64(sp.cycle)/60
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dx := 2 / percent * math.Cos(float64(sp.cycle-i*10)/(math.Pi*2))
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op := &ebiten.DrawImageOptions{}
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op.GeoM.Translate(-48/2, -48/2)
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op.GeoM.Scale(percent, percent)
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op.GeoM.Rotate(-float64(sp.cycle) / (math.Pi * 4))
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op.GeoM.Translate(SPLASH_DIM/2, SPLASH_DIM/2)
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op.GeoM.Translate(dx, dy)
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op.ColorScale.ScaleAlpha(sp.opacity)
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sp.Sprite.DrawImage(assets.ImageBank[assets.Splash], op)
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}
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}
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func (sp *Splash) GetPosition() gamedata.Coordinates {
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return sp.position
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}
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func (sp *Splash) SetPosition(pos gamedata.Coordinates) {
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sp.position = pos
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}
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func (sp *Splash) GetAlpha() float32 {
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return sp.opacity
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}
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