SceneManager

from HarambobEngine.Scene import Scene

class SceneManager:
    '''
    The SceneManager class manages all scenes that exist within the game
    It holds the current scene, acts as a storage units for scenes currently not in use
    and is able to interact directly with scenes.
    '''

    instance = None
    currentScene = None

    scenes = []

    def AddScene (self, scene: Scene):
        '''
        Adds a scene to the SceneManager.scenes list
        :param scene:
        :return:
        '''

        self.scenes.append (scene)

    def SetCurrentScene (self, sceneName: str):

        for scene in self.scenes:

            if scene.name == sceneName:

                self.currentScene = scene


    @classmethod
    def GetInstance (cls) -> instance:
        '''
        Public static factory method, keeps it's instance in SceneManager.instance
        :return:
        '''

        if isinstance (SceneManager.instance, SceneManager):

            return SceneManager.instance

        SceneManager.instance = SceneManager ()
        return SceneManager.instance