# __main__.py
# Walker M. White (wmw2), Lillian Lee (LJL2), Steve Marschner (SRM2)
# Spring 2013
"""__main__ module for Breakout

This is the module with the application code.  Make sure that this module is
in a folder with the following files:

    controller.py (the primary controller class)
    graphics.py   (the graphics widgets for the view)
    graphics.kv   (the layout code for the view)

In addition, you should have the following subfolders

    Fonts         (fonts to use for GLabel)
    Sounds        (sound effects for the game)
    Images        (image files to use in the game)

Moving any of these folders or files will prevent the game from working properly"""
from kivy.app import App
from kivy.config import Config
import controller
import sys


class BreakoutApp(App):
    """Application class for Breakout.

    Extends the Kivy App class.  It integrates the .kv file with .py methods.
    It is invoked at start-up and then never used again."""
    _controller = None # The controller class (held as field to prevent garbage collection)

    def build(self):
        """Creates the new Window and instantiates the game controller."""""
        Config.set('graphics', 'width', str(controller.GAME_WIDTH))
        Config.set('graphics', 'height', str(controller.GAME_HEIGHT))
        self._controller = controller.Breakout()
        return self._controller.view


def fix_bricks(args):
    """Changes constants BRICKS_IN_ROW, BRICK_ROWS, and BRICK_WIDTH to match
    command line arguments.

    If args does not have exactly three elements, or the last two elements
    do not represent positive integers, DON'T DO ANYTHING.

    If args has exactly three elements, and the last two represent positive
    integers, do the following:
    Convert the second element to an int and store it in BRICKS_IN_ROW.
    Convert the third element to an int and store it in BRICK_ROWS.
    Recompute BRICK_WIDTH using the formula given in its declaration in
    module controller.

    Precondition: args is a list of strings, and if contains exactly three
    elements, the last two represent positive integers."""

    # To reset the above three 'constants', note that you can treat global
    # variables in a module just like any other variables:
    #
    #     controller.BRICKS_IN_ROW = new_value

    if args is None or len(args) != 3:
        return
    else:
        bricks_in_row = int(args[1])
        brick_rows    = int(args[2])
        controller.BRICKS_IN_ROW = bricks_in_row
        controller.BRICK_ROWS  = brick_rows
        controller.BRICK_WIDTH = (float(controller.GAME_WIDTH) / bricks_in_row -
                                  controller.BRICK_SEP_H)





# Application code
if __name__ == '__main__':
    fix_bricks(sys.argv)
    BreakoutApp().run()