32 lines
803 B
Go
32 lines
803 B
Go
package scene
|
|
|
|
import (
|
|
"unsafe"
|
|
|
|
"aego/core/errs"
|
|
"aego/schema"
|
|
)
|
|
|
|
type Overlay interface {
|
|
Bag(s *Scene, h NodeHandle, td *schema.TypeDescriptor) (unsafe.Pointer, bool)
|
|
}
|
|
|
|
func (t *Types) SetOverlay(o Overlay) {
|
|
t.overlay = o
|
|
}
|
|
|
|
func (s *Scene) target(h NodeHandle, t schema.TypeID) (unsafe.Pointer, *schema.TypeDescriptor, error) {
|
|
if st, ok := s.storesByID[t]; ok {
|
|
if p, ok := st.pointer(h); ok {
|
|
return p, st.descriptor(), nil
|
|
}
|
|
return nil, nil, errs.New(errs.SceneNoComponent, "node does not have this component")
|
|
}
|
|
if td, ok := s.registry.ByID(t); ok && td.Kind == schema.TypeScript && s.types.overlay != nil {
|
|
if p, ok := s.types.overlay.Bag(s, h, td); ok {
|
|
return p, td, nil
|
|
}
|
|
}
|
|
return nil, nil, errs.New(errs.SceneNoComponent, "node does not have this component")
|
|
}
|