Function SetScene

scene.go:68–118

SetScene sets the currentScene to the given Scene, and optionally forcing to create a new ecs.World that goes with it.

(s Scene, forceNewWorld bool)

// SetScene sets the currentScene to the given Scene, and
// optionally forcing to create a new ecs.World that goes with it.
func SetScene(s Scene, forceNewWorld bool) {
	// Break down currentScene
	if currentScene != nil {
		if hider, ok := currentScene.(Hider); ok {
			hider.Hide()
		}
	}

	// Register Scene if needed
	sceneMutex.RLock()
	wrapper, registered := scenes[s.Type()]
	sceneMutex.RUnlock()

	if !registered {
		RegisterScene(s)

		sceneMutex.RLock()
		wrapper = scenes[s.Type()]
		sceneMutex.RUnlock()
	}

	// Initialize new Scene / World if needed
	var doSetup bool

	if wrapper.update == nil || forceNewWorld {
		t := reflect.Indirect(reflect.ValueOf(currentUpdater)).Type()
		v := reflect.New(t)
		wrapper.update = v.Interface().(Updater)
		wrapper.mailbox = &MessageManager{}

		doSetup = true
	}

	// Do the switch
	currentScene = s
	currentUpdater = wrapper.update
	Mailbox = wrapper.mailbox

	// doSetup is true whenever we're (re)initializing the Scene
	if doSetup {
		s.Preload()

		wrapper.mailbox.listeners = make(map[string][]HandlerIDPair)

		s.Setup(wrapper.update)
	} else {
		if shower, ok := currentScene.(Shower); ok {
			shower.Show()
		}
	}
}

// RegisterScene registers the `Scene`, so it can later be used by `SetSceneByName`
func RegisterScene(s Scene) {