43 lines
787 B
Go
43 lines
787 B
Go
package engine
|
|
|
|
import (
|
|
"encoding/gob"
|
|
"image"
|
|
|
|
"drjosh.dev/gurgle/geom"
|
|
"github.com/hajimehoshi/ebiten/v2"
|
|
)
|
|
|
|
// Ensure Billboard satisfies interfaces.
|
|
var _ interface {
|
|
Identifier
|
|
Drawer
|
|
Scanner
|
|
Transformer
|
|
} = &Billboard{}
|
|
|
|
func init() {
|
|
gob.Register(&Billboard{})
|
|
}
|
|
|
|
// Billboard draws an image at a position.
|
|
type Billboard struct {
|
|
ID
|
|
Hides
|
|
Pos image.Point
|
|
Src ImageRef
|
|
ZPosition
|
|
}
|
|
|
|
// Draw draws the image.
|
|
func (b *Billboard) Draw(screen *ebiten.Image, opts *ebiten.DrawImageOptions) {
|
|
screen.DrawImage(b.Src.Image(), opts)
|
|
}
|
|
|
|
// Scan returns a slice containing Src.
|
|
func (b *Billboard) Scan() []interface{} { return []interface{}{&b.Src} }
|
|
|
|
func (b *Billboard) Transform() (opts ebiten.DrawImageOptions) {
|
|
opts.GeoM.Translate(geom.CFloat(b.Pos))
|
|
return opts
|
|
}
|