Let’s make the game seen in the first part more fun.
Now the aliens go also diagonally, making more difficult to predict.
In this version, each alien object has two speed components, speed_x and speed_y. The aliens move diagonally depending on their speed_x value, which can be -1, 0, or 1, and the direction changes when they hit the screen’s left or right edge. This makes their movement more varied and adds an extra layer of challenge to the game.
import pygame
import random
import time
# Initialize Pygame
pygame.init()
# Constants
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
FPS = 60
# Colors
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
# Set up the display
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption("Avoid the Falling Aliens")
# Clock for controlling the frame rate
clock = pygame.time.Clock()
# Basket properties
basket_width = 100
basket_height = 20
basket_x = (SCREEN_WIDTH - basket_width) // 2
basket_y = SCREEN_HEIGHT - basket_height - 10
basket_speed = 10
# Load sprite sheet and split into individual images
def load_spritesheet(filename, sprite_width, sprite_height, num_sprites):
sheet = pygame.image.load(filename).convert_alpha()
sprites = []
for i in range(num_sprites):
rect = pygame.Rect(i * sprite_width, 0, sprite_width, sprite_height)
image = sheet.subsurface(rect)
sprites.append(image)
return sprites
# Load alien images from sprite sheet
alien_images = load_spritesheet('aliens_spritesheet2.png', 30, 30, 3)
alien_width = alien_images[0].get_width()
alien_height = alien_images[0].get_height()
# Object properties
object_speed = 5
# Create multiple objects
num_objects = 5
objects = [{'x': random.randint(0, SCREEN_WIDTH - alien_width),
'y': -alien_height,
'image': random.choice(alien_images),
'speed_x': random.choice([-1, 0, 1]) * random.randint(1, 3),
'speed_y': random.randint(3, 6)} for _ in range(num_objects)]
# Basket movement
def move_basket(keys, basket_x):
if keys[pygame.K_LEFT] and basket_x > 0:
basket_x -= basket_speed
if keys[pygame.K_RIGHT] and basket_x < SCREEN_WIDTH - basket_width:
basket_x += basket_speed
return basket_x
# Check for collision
def check_collision(basket_x, basket_y, object_x, object_y):
if (object_x < basket_x + basket_width and
object_x + alien_width > basket_x and
object_y < basket_y + basket_height and
object_y + alien_height > basket_y):
return True
return False
# Main game loop
running = True
score = 0
lives = 3
start_time = time.time()
while running:
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
keys = pygame.key.get_pressed()
basket_x = move_basket(keys, basket_x)
# Move the objects
current_time = time.time()
for obj in objects:
obj['x'] += obj['speed_x']
obj['y'] += obj['speed_y']
if obj['x'] < 0 or obj['x'] > SCREEN_WIDTH - alien_width:
obj['speed_x'] *= -1
if obj['y'] > SCREEN_HEIGHT:
obj['y'] = -alien_height
obj['x'] = random.randint(0, SCREEN_WIDTH - alien_width)
obj['image'] = random.choice(alien_images)
obj['speed_x'] = random.choice([-1, 0, 1]) * random.randint(1, 3)
obj['speed_y'] = random.randint(3, 6) + int((current_time - start_time) / 10)
score += 1 # Increase score when the object safely passes
# Check for collision
if check_collision(basket_x, basket_y, obj['x'], obj['y']):
lives -= 1
obj['y'] = -alien_height
obj['x'] = random.randint(0, SCREEN_WIDTH - alien_width)
obj['image'] = random.choice(alien_images)
obj['speed_x'] = random.choice([-1, 0, 1]) * random.randint(1, 3)
obj['speed_y'] = random.randint(3, 6) + int((current_time - start_time) / 10)
if lives <= 0:
running = False
# Fill the screen with a color
screen.fill(WHITE)
# Draw the basket
pygame.draw.rect(screen, BLACK, (basket_x, basket_y, basket_width, basket_height))
# Draw the objects
for obj in objects:
screen.blit(obj['image'], (obj['x'], obj['y']))
# Display the score and lives
font = pygame.font.Font(None, 36)
score_text = font.render(f"Score: {score}", True, BLACK)
lives_text = font.render(f"Lives: {lives}", True, BLACK)
screen.blit(score_text, (10, 10))
screen.blit(lives_text, (10, 50))
# Update the display
pygame.display.flip()
# Control the frame rate
clock.tick(FPS)
pygame.quit()
the repo
https://github.com/formazione/game_falling_aliens
make them bounce on each other
import pygame
import random
import time
# Initialize Pygame
pygame.init()
# Constants
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
FPS = 60
# Colors
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
# Set up the display
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption("Avoid the Falling Aliens")
# Clock for controlling the frame rate
clock = pygame.time.Clock()
# Basket properties
basket_width = 100
basket_height = 20
basket_x = (SCREEN_WIDTH - basket_width) // 2
basket_y = SCREEN_HEIGHT - basket_height - 10
basket_speed = 10
# Load sprite sheet and split into individual images
def load_spritesheet(filename, sprite_width, sprite_height, num_sprites):
sheet = pygame.image.load(filename).convert_alpha()
sprites = []
for i in range(num_sprites):
rect = pygame.Rect(i * sprite_width, 0, sprite_width, sprite_height)
image = sheet.subsurface(rect)
sprites.append(image)
return sprites
# Load alien images from sprite sheet
alien_images = load_spritesheet('aliens_spritesheet2.png', 30, 30, 3)
alien_width = alien_images[0].get_width()
alien_height = alien_images[0].get_height()
# Object properties
object_speed = 5
# Create multiple objects
num_objects = 5
objects = [{'x': random.randint(0, SCREEN_WIDTH - alien_width),
'y': -alien_height,
'image': random.choice(alien_images),
'speed_x': random.choice([-1, 0, 1]) * random.randint(1, 3),
'speed_y': random.randint(3, 6)} for _ in range(num_objects)]
# Basket movement
def move_basket(keys, basket_x):
if keys[pygame.K_LEFT] and basket_x > 0:
basket_x -= basket_speed
if keys[pygame.K_RIGHT] and basket_x < SCREEN_WIDTH - basket_width:
basket_x += basket_speed
return basket_x
# Check for collision with basket
def check_collision(basket_x, basket_y, object_x, object_y):
if (object_x < basket_x + basket_width and
object_x + alien_width > basket_x and
object_y < basket_y + basket_height and
object_y + alien_height > basket_y):
return True
return False
# Check for collision between two objects
def check_object_collision(obj1, obj2):
if (obj1['x'] < obj2['x'] + alien_width and
obj1['x'] + alien_width > obj2['x'] and
obj1['y'] < obj2['y'] + alien_height and
obj1['y'] + alien_height > obj2['y']):
return True
return False
# Main game loop
running = True
score = 0
lives = 3
start_time = time.time()
while running:
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
keys = pygame.key.get_pressed()
basket_x = move_basket(keys, basket_x)
# Move the objects
current_time = time.time()
for obj in objects:
obj['x'] += obj['speed_x']
obj['y'] += obj['speed_y']
if obj['x'] < 0 or obj['x'] > SCREEN_WIDTH - alien_width:
obj['speed_x'] *= -1
if obj['y'] > SCREEN_HEIGHT:
obj['y'] = -alien_height
obj['x'] = random.randint(0, SCREEN_WIDTH - alien_width)
obj['image'] = random.choice(alien_images)
obj['speed_x'] = random.choice([-1, 0, 1]) * random.randint(1, 3)
obj['speed_y'] = random.randint(3, 6) + int((current_time - start_time) / 10)
score += 1 # Increase score when the object safely passes
# Check for collision with basket
if check_collision(basket_x, basket_y, obj['x'], obj['y']):
lives -= 1
obj['y'] = -alien_height
obj['x'] = random.randint(0, SCREEN_WIDTH - alien_width)
obj['image'] = random.choice(alien_images)
obj['speed_x'] = random.choice([-1, 0, 1]) * random.randint(1, 3)
obj['speed_y'] = random.randint(3, 6) + int((current_time - start_time) / 10)
# Check for collisions between objects
for i in range(len(objects)):
for j in range(i + 1, len(objects)):
if check_object_collision(objects[i], objects[j]):
objects[i]['speed_x'], objects[j]['speed_x'] = objects[j]['speed_x'], objects[i]['speed_x']
objects[i]['speed_y'], objects[j]['speed_y'] = objects[j]['speed_y'], objects[i]['speed_y']
if lives <= 0:
running = False
# Fill the screen with a color
screen.fill(WHITE)
# Draw the basket
pygame.draw.rect(screen, BLACK, (basket_x, basket_y, basket_width, basket_height))
# Draw the objects
for obj in objects:
screen.blit(obj['image'], (obj['x'], obj['y']))
# Display the score and lives
font = pygame.font.Font(None, 36)
score_text = font.render(f"Score: {score}", True, BLACK)
lives_text = font.render(f"Lives: {lives}", True, BLACK)
screen.blit(score_text, (10, 10))
screen.blit(lives_text, (10, 50))
# Update the display
pygame.display.flip()
# Control the frame rate
clock.tick(FPS)
pygame.quit()
Increasing speed
Now as time goes by the speed increases, making the game more challenging.
import pygame
import random
import time
# Initialize Pygame
pygame.init()
# Constants
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
FPS = 60
# Colors
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
# Set up the display
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption("Avoid the Falling Aliens")
# Clock for controlling the frame rate
clock = pygame.time.Clock()
# Basket properties
basket_width = 100
basket_height = 20
basket_x = (SCREEN_WIDTH - basket_width) // 2
basket_y = SCREEN_HEIGHT - basket_height - 10
basket_speed = 10
# Load sprite sheet and split into individual images
def load_spritesheet(filename, sprite_width, sprite_height, num_sprites):
sheet = pygame.image.load(filename).convert_alpha()
sprites = []
for i in range(num_sprites):
rect = pygame.Rect(i * sprite_width, 0, sprite_width, sprite_height)
image = sheet.subsurface(rect)
sprites.append(image)
return sprites
# Load alien images from sprite sheet
alien_images = load_spritesheet('aliens_spritesheet2.png', 30, 30, 3)
alien_width = alien_images[0].get_width()
alien_height = alien_images[0].get_height()
# Object properties
base_speed = 3
# Create multiple objects
num_objects = 5
objects = [{'x': random.randint(0, SCREEN_WIDTH - alien_width),
'y': -alien_height,
'image': random.choice(alien_images),
'speed_x': random.choice([-1, 0, 1]) * random.randint(1, 3),
'speed_y': random.randint(base_speed, base_speed + 3)} for _ in range(num_objects)]
# Basket movement
def move_basket(keys, basket_x):
if keys[pygame.K_LEFT] and basket_x > 0:
basket_x -= basket_speed
if keys[pygame.K_RIGHT] and basket_x < SCREEN_WIDTH - basket_width:
basket_x += basket_speed
return basket_x
# Check for collision with basket
def check_collision(basket_x, basket_y, object_x, object_y):
if (object_x < basket_x + basket_width and
object_x + alien_width > basket_x and
object_y < basket_y + basket_height and
object_y + alien_height > basket_y):
return True
return False
# Check for collision between two objects
def check_object_collision(obj1, obj2):
if (obj1['x'] < obj2['x'] + alien_width and
obj1['x'] + alien_width > obj2['x'] and
obj1['y'] < obj2['y'] + alien_height and
obj1['y'] + alien_height > obj2['y']):
return True
return False
# Main game loop
running = True
score = 0
lives = 3
start_time = time.time()
while running:
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
keys = pygame.key.get_pressed()
basket_x = move_basket(keys, basket_x)
# Move the objects
current_time = time.time()
time_elapsed = current_time - start_time
for obj in objects:
obj['x'] += obj['speed_x']
obj['y'] += obj['speed_y'] + time_elapsed * 0.01 # Increase speed over time
if obj['x'] < 0 or obj['x'] > SCREEN_WIDTH - alien_width:
obj['speed_x'] *= -1
if obj['y'] > SCREEN_HEIGHT:
obj['y'] = -alien_height
obj['x'] = random.randint(0, SCREEN_WIDTH - alien_width)
obj['image'] = random.choice(alien_images)
obj['speed_x'] = random.choice([-1, 0, 1]) * random.randint(1, 3)
obj['speed_y'] = random.randint(base_speed, base_speed + 3) + int(time_elapsed / 10)
score += 1 # Increase score when the object safely passes
# Check for collision with basket
if check_collision(basket_x, basket_y, obj['x'], obj['y']):
lives -= 1
obj['y'] = -alien_height
obj['x'] = random.randint(0, SCREEN_WIDTH - alien_width)
obj['image'] = random.choice(alien_images)
obj['speed_x'] = random.choice([-1, 0, 1]) * random.randint(1, 3)
obj['speed_y'] = random.randint(base_speed, base_speed + 3) + int(time_elapsed / 10)
# Check for collisions between objects
for i in range(len(objects)):
for j in range(i + 1, len(objects)):
if check_object_collision(objects[i], objects[j]):
objects[i]['speed_x'], objects[j]['speed_x'] = objects[j]['speed_x'], objects[i]['speed_x']
objects[i]['speed_y'], objects[j]['speed_y'] = objects[j]['speed_y'], objects[i]['speed_y']
if lives <= 0:
running = False
# Fill the screen with a color
screen.fill(WHITE)
# Draw the basket
pygame.draw.rect(screen, BLACK, (basket_x, basket_y, basket_width, basket_height))
# Draw the objects
for obj in objects:
screen.blit(obj['image'], (obj['x'], obj['y']))
# Display the score and lives
font = pygame.font.Font(None, 36)
score_text = font.render(f"Score: {score}", True, BLACK)
lives_text = font.render(f"Lives: {lives}", True, BLACK)
screen.blit(score_text, (10, 10))
screen.blit(lives_text, (10, 50))
# Update the display
pygame.display.flip()
# Control the frame rate
clock.tick(FPS)
pygame.quit()
Subscribe to the newsletter for updates
Tkinter templates
My youtube channelTwitter: @pythonprogrammi - python_pygame
Claude's Games
1. Memory gameVideos
Speech recognition gamePygame's Platform Game
