move sceneref into scene.go

engine/scene.go

@@ -2,13 +2,26 @@ package engine
 
 import (
 	"encoding/gob"
+	"image"
+	"io/fs"
+	"path/filepath"
 )
 
+var (
 	// Ensure Scene satisfies Scener.
-var _ Scener = &Scene{}
+	_ Scener = &Scene{}
+
+	// Ensure SceneRef satisfies interfaces.
+	_ interface {
+		Loader
+		Scener
+	} = &SceneRef{}
+)
 
 func init() {
 	gob.Register(&Scene{})
+	gob.Register(&SceneRef{})
+
 }
 
 // Scene just contains a bunch of components.
@@ -22,3 +35,61 @@ type Scene struct {
 
 // Scan returns all immediate subcomponents (including the camera, if not nil).
 func (s *Scene) Scan() []interface{} { return s.Components }
+
+// SceneRef loads a gzipped, gob-encoded Scene from the asset FS.
+// After Load, Scene is usable.
+// This is mostly useful for scenes that refer to other scenes, e.g.
+//
+//    sc := &Scene{
+//	    Components: []interface{}{
+//			&SceneRef{Path: "assets/foo.gob.gz"}  // inflated at Load time
+//		},
+//    }
+type SceneRef struct {
+	Path string
+
+	scene *Scene // not exported for gob reasons
+}
+
+// Load loads the scene from the file.
+func (r *SceneRef) Load(assets fs.FS) error {
+	sc := new(Scene)
+	if err := LoadGobz(sc, assets, r.Path); err != nil {
+		return err
+	}
+	r.scene = sc
+	return nil
+}
+
+// Save saves the scene to a file in the current directory.
+func (r *SceneRef) Save() error { return SaveGobz(r.scene, filepath.Base(r.Path)) }
+
+// The rest of the methods forward to r.scene, as such they will
+// panic if the scene isn't loaded.
+
+// BoundingRect returns the Bounds from the scene.
+func (r SceneRef) BoundingRect() image.Rectangle { return r.scene.BoundingRect() }
+
+// IsDisabled returns the value of IsDisabled from the scene.
+func (r SceneRef) IsDisabled() bool { return r.scene.IsDisabled() }
+
+// Disable calls Disable on the scene.
+func (r SceneRef) Disable() { r.scene.Disable() }
+
+// Enable calls Enable on the scene.
+func (r SceneRef) Enable() { r.scene.Enable() }
+
+// IsHidden returns the value of IsHidden from the scene.
+func (r SceneRef) IsHidden() bool { return r.scene.IsHidden() }
+
+// Hide calls Hide on the scene.
+func (r SceneRef) Hide() { r.scene.Hide() }
+
+// Show calls Show on the scene.
+func (r SceneRef) Show() { r.scene.Show() }
+
+// Ident returns the value of Ident from the scene.
+func (r SceneRef) Ident() string { return r.scene.Ident() }
+
+// Scan returns the components in the scene.
+func (r SceneRef) Scan() []interface{} { return r.scene.Scan() }

engine/sceneref.go

@@ -1,76 +0,0 @@
-package engine
-
-import (
-	"encoding/gob"
-	"image"
-	"io/fs"
-	"path/filepath"
-)
-
-// Ensure SceneRef satisfies interfaces.
-var _ interface {
-	Loader
-	Scener
-} = &SceneRef{}
-
-func init() {
-	gob.Register(&SceneRef{})
-}
-
-// SceneRef loads a gzipped, gob-encoded Scene from the asset FS.
-// After Load, Scene is usable.
-// This is mostly useful for scenes that refer to other scenes, e.g.
-//
-//    sc := &Scene{
-//	    Components: []interface{}{
-//			&SceneRef{Path: "assets/foo.gob.gz"}  // inflated at Load time
-//		},
-//    }
-type SceneRef struct {
-	Path string
-
-	scene *Scene // not exported for gob reasons
-}
-
-// Load loads the scene from the file.
-func (r *SceneRef) Load(assets fs.FS) error {
-	sc := new(Scene)
-	if err := LoadGobz(sc, assets, r.Path); err != nil {
-		return err
-	}
-	r.scene = sc
-	return nil
-}
-
-// Save saves the scene to a file in the current directory.
-func (r *SceneRef) Save() error { return SaveGobz(r.scene, filepath.Base(r.Path)) }
-
-// The rest of the methods forward to r.scene, as such they will
-// panic if the scene isn't loaded.
-
-// BoundingRect returns the Bounds from the scene.
-func (r SceneRef) BoundingRect() image.Rectangle { return r.scene.BoundingRect() }
-
-// IsDisabled returns the value of IsDisabled from the scene.
-func (r SceneRef) IsDisabled() bool { return r.scene.IsDisabled() }
-
-// Disable calls Disable on the scene.
-func (r SceneRef) Disable() { r.scene.Disable() }
-
-// Enable calls Enable on the scene.
-func (r SceneRef) Enable() { r.scene.Enable() }
-
-// IsHidden returns the value of IsHidden from the scene.
-func (r SceneRef) IsHidden() bool { return r.scene.IsHidden() }
-
-// Hide calls Hide on the scene.
-func (r SceneRef) Hide() { r.scene.Hide() }
-
-// Show calls Show on the scene.
-func (r SceneRef) Show() { r.scene.Show() }
-
-// Ident returns the value of Ident from the scene.
-func (r SceneRef) Ident() string { return r.scene.Ident() }
-
-// Scan returns the components in the scene.
-func (r SceneRef) Scan() []interface{} { return r.scene.Scan() }