45 lines
793 B
Go
45 lines
793 B
Go
package engine
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import (
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"encoding/gob"
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"image"
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"github.com/hajimehoshi/ebiten/v2"
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)
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// Ensure Billboard satisfies interfaces.
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var _ interface {
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Identifier
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Drawer
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ParallaxScaler
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Scanner
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} = &Billboard{}
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func init() {
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gob.Register(&Billboard{})
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}
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// Billboard draws an image at a position.
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type Billboard struct {
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ID
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Hidden
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Parallax
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Pos image.Point
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Src ImageRef
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ZOrder
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}
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// Draw draws the image.
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func (b *Billboard) Draw(screen *ebiten.Image, opts ebiten.DrawImageOptions) {
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if b.Hidden {
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return
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}
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var geom ebiten.GeoM
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geom.Translate(float64(b.Pos.X), float64(b.Pos.Y))
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geom.Concat(opts.GeoM)
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opts.GeoM = geom
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screen.DrawImage(b.Src.Image(), &opts)
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}
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// Scan returns a slice containing Src.
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func (b *Billboard) Scan() []interface{} { return []interface{}{&b.Src} }
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