Aspen_Collisions

 Worked through a new Aspen tutorial illustrating collision detection. We now have 

both the dog sprite and the food sprites defined in OOP ie with classes and '.self' reference. 

This game consists of the pooch scoring the food bowls. The scoring has yet to be 

worked through...

                                                                         

import pygame
import random

# Pygame Setup Stuff
pygame.init()
WINDOW_WIDTH = 800
WINDOW_HEIGHT = 500
screen = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
pygame.display.set_caption('Codemy.com - Aspen Classes')
clock = pygame.time.Clock()
running = True

dt = 0
player_pos = pygame.Vector2(screen.get_width() / 2, screen.get_height() / 2)


# Define an Aspen Class
class Aspen(pygame.sprite.Sprite):
    def __init__(self, x, y, food_group):
        super().__init__()
        # Define our image
        self.image = pygame.image.load("images/aspen2.png")
        # Get Rect
        self.rect = self.image.get_rect()
        # Position the image
        self.rect.topleft = (x, y)
        # Move the image
        self.velocity = 5
        # Add food group to aspen class
        self.food_group = food_group

    def update(self):
        self.move()
        self.check_collisions()

    def move(self):
        keys = pygame.key.get_pressed()
        if keys[pygame.K_LEFT]:
            self.rect.x -= self.velocity
        if keys[pygame.K_RIGHT]:
            self.rect.x += self.velocity
        if keys[pygame.K_UP]:
            self.rect.y -= self.velocity
        if keys[pygame.K_DOWN]:
            self.rect.y += self.velocity

    def check_collisions(self):
        if pygame.sprite.spritecollide(self, self.food_group, True):
            print(len(self.food_group))


# Define an Food Class

class Food(pygame.sprite.Sprite):
    def __init__(self, x, y):
        super().__init__()
        # Define our image
        self.image = pygame.image.load("images/food2.png")
        # Get Rect
        self.rect = self.image.get_rect()
        # Position the image
        self.rect.topleft = (x, y)
        # Move the image
        self.velocity = random.randint(1, 2)



    def update(self):
        self.rect.y += self.velocity


# Create an food group
food_group = pygame.sprite.Group()

# Create 5 aspens
for i in range(8):
    food = Food(i * 100, 10)
    food_group.add(food)

# Create aspen group
aspen_group = pygame.sprite.Group()
# Create and position aspen
aspen = Aspen(200, 400, food_group)
# Add aspen to the group
aspen_group.add(aspen)

while running:
    # poll for events
    # pygame.QUIT event means that the user clicked the X to close the window
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # Pick the screen color
    screen.fill("silver")

    # Blit (copy) screen object at a given coordinates
    # screen.blit(aspen, aspen_rect)

    # Draw and Move Food and Aspen sprite
    food_group.update()
    food_group.draw(screen)
    aspen_group.update()
    aspen_group.draw(screen)

    # flip the display to output our work to the screen
    pygame.display.flip()

    # Set the clock stuff / delta time in seconds since the last frame
    # used for framerate independent physics
    dt = clock.tick(60) / 1000

pygame.quit()