ui.py

from data_structures import Stack  # Import stack object from stack.py
from abc import ABC, abstractmethod  # Import abstract base class and abstract method
from application import Application  # Import game application


'''
User Interface class, parent class of 
both Terminal and UI, stores the current 
version of the application.
'''
class UI(ABC):  # User Interface class, inherits from abstract base class (must be inherited to use it)

    VERSION = "v1.0.2"  # Set version

    def __init__(self):  # Constructor
        self._application = Application()  # Create game application
        self._ui_stack = Stack()  # Create new UI stack (for back buttons)
        self._push_ui_to_stack("home")  # Push "home" to stack, represents the home screen first being rendered

    def _push_ui_to_stack(self, ui):  # Push ui to stack method
        self._ui_stack.push(ui)

    def _pop_ui_from_stack(self):  # Pop ui from stack method
        return self._ui_stack.pop()

    def _get_curr_ui(self):  # Get current ui at the top of the stack
        return self._ui_stack.peek()

    @abstractmethod
    def run(self):  # Run method to start the game, must be implemented by children classes
        raise NotImplementedError