solitaire_03.py Full Listing

solitaire_03.py
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"""
Solitaire clone.
"""
import arcade

# Screen title and size
SCREEN_WIDTH = 1024
SCREEN_HEIGHT = 768
SCREEN_TITLE = "Drag and Drop Cards"

# Constants for sizing
CARD_SCALE = 0.6

# How big are the cards?
CARD_WIDTH = 140 * CARD_SCALE
CARD_HEIGHT = 190 * CARD_SCALE

# How big is the mat we'll place the card on?
MAT_PERCENT_OVERSIZE = 1.25
MAT_HEIGHT = int(CARD_HEIGHT * MAT_PERCENT_OVERSIZE)
MAT_WIDTH = int(CARD_WIDTH * MAT_PERCENT_OVERSIZE)

# How much space do we leave as a gap between the mats?
# Done as a percent of the mat size.
VERTICAL_MARGIN_PERCENT = 0.10
HORIZONTAL_MARGIN_PERCENT = 0.10

# The Y of the bottom row (2 piles)
BOTTOM_Y = MAT_HEIGHT / 2 + MAT_HEIGHT * VERTICAL_MARGIN_PERCENT

# The X of where to start putting things on the left side
START_X = MAT_WIDTH / 2 + MAT_WIDTH * HORIZONTAL_MARGIN_PERCENT

# Card constants
CARD_VALUES = ["A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K"]
CARD_SUITS = ["Clubs", "Hearts", "Spades", "Diamonds"]

class Card(arcade.Sprite):
    """ Card sprite """

    def __init__(self, suit, value, scale=1):
        """ Card constructor """

        # Attributes for suit and value
        self.suit = suit
        self.value = value

        # Image to use for the sprite when face up
        self.image_file_name = f":resources:images/cards/card{self.suit}{self.value}.png"

        # Call the parent
        super().__init__(self.image_file_name, scale, calculate_hit_box=False)

class MyGame(arcade.Window):
    """ Main application class. """

    def __init__(self):
        super().__init__(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)

        # Sprite list with all the cards, no matter what pile they are in.
        self.card_list = None

        arcade.set_background_color(arcade.color.AMAZON)

        # List of cards we are dragging with the mouse
        self.held_cards = None

        # Original location of cards we are dragging with the mouse in case
        # they have to go back.
        self.held_cards_original_position = None

    def setup(self):
        """ Set up the game here. Call this function to restart the game. """

        # List of cards we are dragging with the mouse
        self.held_cards = []

        # Original location of cards we are dragging with the mouse in case
        # they have to go back.
        self.held_cards_original_position = []

        # Sprite list with all the cards, no matter what pile they are in.
        self.card_list = arcade.SpriteList()

        # Create every card
        for card_suit in CARD_SUITS:
            for card_value in CARD_VALUES:
                card = Card(card_suit, card_value, CARD_SCALE)
                card.position = START_X, BOTTOM_Y
                self.card_list.append(card)

    def on_draw(self):
        """ Render the screen. """
        # Clear the screen
        arcade.start_render()

        # Draw the cards
        self.card_list.draw()

    def pull_to_top(self, card):
        """ Pull card to top of rendering order (last to render, looks on-top) """
        # Find the index of the card
        index = self.card_list.index(card)
        # Loop and pull all the other cards down towards the zero end
        for i in range(index, len(self.card_list) - 1):
            self.card_list[i] = self.card_list[i + 1]
        # Put this card at the right-side/top/size of list
        self.card_list[len(self.card_list) - 1] = card

    def on_mouse_press(self, x, y, button, key_modifiers):
        """ Called when the user presses a mouse button. """

        # Get list of cards we've clicked on
        cards = arcade.get_sprites_at_point((x, y), self.card_list)

        # Have we clicked on a card?
        if len(cards) > 0:

            # Might be a stack of cards, get the top one
            primary_card = cards[-1]

            # All other cases, grab the face-up card we are clicking on
            self.held_cards = [primary_card]
            # Save the position
            self.held_cards_original_position = [self.held_cards[0].position]
            # Put on top in drawing order
            self.pull_to_top(self.held_cards[0])

    def on_mouse_release(self, x: float, y: float, button: int,
                         modifiers: int):
        """ Called when the user presses a mouse button. """

        # If we don't have any cards, who cares
        if len(self.held_cards) == 0:
            return

        # We are no longer holding cards
        self.held_cards = []

    def on_mouse_motion(self, x: float, y: float, dx: float, dy: float):
        """ User moves mouse """

        # If we are holding cards, move them with the mouse
        for card in self.held_cards:
            card.center_x += dx
            card.center_y += dy


def main():
    """ Main method """
    window = MyGame()
    window.setup()
    arcade.run()


if __name__ == "__main__":
    main()