Cached parameter added.

batch.go

@@ -26,7 +26,7 @@ var _ BasicTarget = (*Batch)(nil)
 //
 // Note, that if the container does not support TrianglesColor, color masking will not work.
 func NewBatch(container Triangles, pic Picture) *Batch {
- b := &Batch{cont: Drawer{Triangles: container, Picture: pic}}
+ b := &Batch{cont: Drawer{Triangles: container, Picture: pic, Cached: true}}
  b.SetMatrix(IM)
  b.SetColorMask(Alpha(1))
  return b

drawer.go

@@ -23,6 +23,7 @@ package pixel
 type Drawer struct {
  Triangles Triangles
  Picture Picture
+ Cached bool
 
  targets map[Target]*drawerTarget
  allTargets []*drawerTarget
@@ -91,7 +92,10 @@ func (d *Drawer) Draw(t Target) {
  pic := dt.pics[d.Picture]
  if pic == nil {
  pic = t.MakePicture(d.Picture)
- dt.pics[d.Picture] = pic
+
+ if d.Cached {
+ dt.pics[d.Picture] = pic
+ }
  }
 
  pic.Draw(dt.tris)

sprite.go

@@ -27,7 +27,7 @@ func NewSprite(pic Picture, frame Rect) *Sprite {
  tri := MakeTrianglesData(6)
  s := &Sprite{
  tri: tri,
- d: Drawer{Triangles: tri},
+ d: Drawer{Triangles: tri, Cached: true},
  }
  s.matrix = IM
  s.mask = Alpha(1)
@@ -44,6 +44,13 @@ func (s *Sprite) Set(pic Picture, frame Rect) {
  }
 }
 
+// SetCached makes the sprite cache all the
+// incoming pictures if the argument is true, and
+// doesn't make it do that if the argument is false.
+func (s *Sprite) SetCached(cached bool) {
+ s.d.Cached = cached
+}
+
 // Picture returns the current Sprite's Picture.
 func (s *Sprite) Picture() Picture {
  return s.d.Picture

text/text.go

@@ -136,6 +136,7 @@ func New(orig pixel.Vec, atlas *Atlas) *Text {
 
  txt.transD.Picture = txt.atlas.pic
  txt.transD.Triangles = &txt.trans
+ txt.transD.Cached = true
 
  txt.Clear()