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DrawDFS uses Children

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This commit is contained in:
Josh Deprez 2021-09-30 10:39:23 +10:00
parent 8ec3ef2a58
commit fb2c9a1474
1 changed files with 12 additions and 7 deletions
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11
engine/drawdfs.go
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@ -25,6 +25,8 @@ func init() {
type DrawDFS struct {
Child interface{}
Hides
game *Game
}
func (d *DrawDFS) Draw(screen *ebiten.Image, opts *ebiten.DrawImageOptions) {
@ -56,13 +58,16 @@ func (d *DrawDFS) drawRecursive(component interface{}, screen *ebiten.Image, opt
return
}
// Has subcomponents? recurse
// TODO: use g.Children or g.Query - but need to go in Scan order...
if sc, ok := component.(Scanner); ok {
sc.Scan(func(x interface{}) error {
// TODO: use g.Query?
d.game.Children(component).Scan(func(x interface{}) error {
d.drawRecursive(x, screen, opts)
return nil
})
}
func (d *DrawDFS) Prepare(g *Game) error {
d.game = g
return nil
}
// Scan visits d.Child.