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snake.py
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snake.py
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import pygame
import random
import sys
import json
from enum import Enum, auto
# Initialize Pygame
pygame.init()
# Constants
WIDTH, HEIGHT = 640, 480
GRID_SIZE = 20
GRID_WIDTH = WIDTH // GRID_SIZE
GRID_HEIGHT = (HEIGHT - 60) // GRID_SIZE # Reduce play area height to make room for info bar
DEFAULT_SPEED = 10
MIN_SPEED = 5
MAX_SPEED = 20
POWER_UP_DURATION = 300
# Colors
class Colors:
WHITE = (255, 255, 255)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)
BLACK = (0, 0, 0)
GRAY = (100, 100, 100)
YELLOW = (255, 255, 0)
# Directions
class Direction(Enum):
UP = (0, -1)
DOWN = (0, 1)
LEFT = (-1, 0)
RIGHT = (1, 0)
# Game States
class GameState(Enum):
MAIN_MENU = auto()
GAME = auto()
SETTINGS = auto()
GAME_OVER = auto()
class PowerUpType(Enum):
SPEED = auto()
INVINCIBILITY = auto()
class Button:
def __init__(self, x, y, width, height, text, color, text_color, font_size=32):
self.rect = pygame.Rect(x, y, width, height)
self.text = text
self.color = color
self.text_color = text_color
self.font = pygame.font.Font(None, font_size)
def draw(self, screen):
pygame.draw.rect(screen, self.color, self.rect)
text_surface = self.font.render(self.text, True, self.text_color)
text_rect = text_surface.get_rect(center=self.rect.center)
screen.blit(text_surface, text_rect)
def is_clicked(self, pos):
return self.rect.collidepoint(pos)
class PowerUp:
def __init__(self, position, type):
self.position = position
self.type = type
self.timer = 200 # Power-up disappears after 200 frames
def draw(self, screen):
color = Colors.BLUE if self.type == PowerUpType.SPEED else Colors.YELLOW
pygame.draw.rect(screen, color, (self.position[0] * GRID_SIZE, self.position[1] * GRID_SIZE + 60, GRID_SIZE, GRID_SIZE))
class SnakeGame:
def __init__(self):
self.screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Snake Xenzia")
self.clock = pygame.time.Clock()
self.font = pygame.font.Font(None, 36)
self.load_settings()
self.game_state = GameState.MAIN_MENU
self.create_menu_buttons()
self.power_up = None
self.power_up_effect = None
self.power_up_timer = 0
self.reset_game()
def create_menu_buttons(self):
self.start_button = Button(WIDTH // 2 - 100, HEIGHT // 2 - 150, 200, 50, "Start Game", Colors.GREEN, Colors.WHITE)
self.settings_button = Button(WIDTH // 2 - 100, HEIGHT // 2 - 50, 200, 50, "Settings", Colors.GRAY, Colors.WHITE)
self.quit_button = Button(WIDTH // 2 - 100, HEIGHT // 2 + 50, 200, 50, "Quit", Colors.RED, Colors.WHITE)
self.walls_button = Button(WIDTH // 2 - 100, HEIGHT // 2 - 100, 200, 50, f"Walls: {'On' if self.walls_on else 'Off'}", Colors.GREEN, Colors.WHITE)
self.speed_up_button = Button(WIDTH // 2 + 50, HEIGHT // 2, 100, 50, "+", Colors.GREEN, Colors.WHITE)
self.speed_down_button = Button(WIDTH // 2 - 150, HEIGHT // 2, 100, 50, "-", Colors.RED, Colors.WHITE)
self.back_button = Button(WIDTH // 2 - 100, HEIGHT // 2 + 100, 200, 50, "Back", Colors.GRAY, Colors.WHITE)
self.restart_button = Button(WIDTH // 2 - 100, HEIGHT // 2, 200, 50, "Restart", Colors.GREEN, Colors.WHITE)
self.menu_button = Button(WIDTH // 2 - 100, HEIGHT // 2 + 100, 200, 50, "Main Menu", Colors.BLUE, Colors.WHITE)
def reset_game(self):
self.snake = [(GRID_WIDTH // 2, GRID_HEIGHT // 2)]
self.direction = Direction.RIGHT
self.food = self.spawn_food()
self.score = 0
self.level = 1
self.power_up = None
self.power_up_effect = None
self.power_up_timer = 0
def load_settings(self):
try:
with open("settings.json", "r") as file:
settings = json.load(file)
self.walls_on = settings.get("walls_on", True)
self.speed = settings.get("speed", DEFAULT_SPEED)
self.high_score = settings.get("high_score", 0)
except (FileNotFoundError, json.JSONDecodeError):
self.walls_on = True
self.speed = DEFAULT_SPEED
self.high_score = 0
def save_settings(self):
settings = {
"walls_on": self.walls_on,
"speed": self.speed,
"high_score": self.high_score
}
with open("settings.json", "w") as file:
json.dump(settings, file)
def spawn_food(self):
while True:
food = (random.randint(0, GRID_WIDTH - 1), random.randint(0, GRID_HEIGHT - 1))
if food not in self.snake and (not self.power_up or food != self.power_up.position):
return food
def spawn_power_up(self):
if random.random() < 0.1: # 10% chance to spawn a power-up
while True:
pos = (random.randint(0, GRID_WIDTH - 1), random.randint(0, GRID_HEIGHT - 1))
if pos not in self.snake and pos != self.food:
return PowerUp(pos, random.choice(list(PowerUpType)))
return None
def move_snake(self):
head = self.snake[0]
new_head = (head[0] + self.direction.value[0], head[1] + self.direction.value[1])
if self.walls_on and self.power_up_effect != PowerUpType.INVINCIBILITY:
if (new_head[0] < 0 or new_head[0] >= GRID_WIDTH or
new_head[1] < 0 or new_head[1] >= GRID_HEIGHT):
return False # Game over
else:
new_head = (new_head[0] % GRID_WIDTH, new_head[1] % GRID_HEIGHT)
if new_head in self.snake and self.power_up_effect != PowerUpType.INVINCIBILITY:
return False # Game over
self.snake.insert(0, new_head)
if new_head == self.food:
self.score += 1
if self.score > self.high_score:
self.high_score = self.score
self.save_settings()
self.food = self.spawn_food()
self.increase_difficulty()
if not self.power_up:
self.power_up = self.spawn_power_up()
else:
self.snake.pop()
if self.power_up and new_head == self.power_up.position:
self.activate_power_up()
self.update_power_ups()
return True
def update_power_ups(self):
if self.power_up:
self.power_up.timer -= 1
if self.power_up.timer <= 0:
self.power_up = None
if self.power_up_effect:
self.power_up_timer -= 1
if self.power_up_timer <= 0:
self.deactivate_power_up()
def activate_power_up(self):
self.power_up_effect = self.power_up.type
self.power_up_timer = POWER_UP_DURATION
if self.power_up_effect == PowerUpType.SPEED:
self.speed = min(self.speed + 2, MAX_SPEED)
self.power_up = None
def deactivate_power_up(self):
if self.power_up_effect == PowerUpType.SPEED:
self.speed = DEFAULT_SPEED
self.power_up_effect = None
def increase_difficulty(self):
if self.score % 5 == 0:
self.level += 1
self.speed = min(self.speed + 1, MAX_SPEED)
def draw_game(self):
self.screen.fill(Colors.BLACK)
# Draw info bar
pygame.draw.rect(self.screen, Colors.GRAY, (0, 0, WIDTH, 60))
self.draw_hud()
# Draw snake
for i, segment in enumerate(self.snake):
color = Colors.GREEN if self.power_up_effect != PowerUpType.INVINCIBILITY else (i * 10 % 256, i * 20 % 256, i * 30 % 256)
pygame.draw.rect(self.screen, color, (segment[0] * GRID_SIZE, segment[1] * GRID_SIZE + 60, GRID_SIZE, GRID_SIZE))
# Draw food
pygame.draw.rect(self.screen, Colors.RED, (self.food[0] * GRID_SIZE, self.food[1] * GRID_SIZE + 60, GRID_SIZE, GRID_SIZE))
# Draw power-up
if self.power_up:
self.power_up.draw(self.screen)
# Draw walls if enabled
if self.walls_on:
pygame.draw.rect(self.screen, Colors.WHITE, (0, 60, WIDTH, HEIGHT - 60), 2)
pygame.display.flip()
def draw_hud(self):
score_text = self.font.render(f"Score: {self.score}", True, Colors.WHITE)
level_text = self.font.render(f"Level: {self.level}", True, Colors.WHITE)
high_score_text = self.font.render(f"High Score: {self.high_score}", True, Colors.WHITE)
speed_text = self.font.render(f"Speed: {self.speed}", True, Colors.WHITE)
self.screen.blit(score_text, (10, 10))
self.screen.blit(level_text, (10, 30))
self.screen.blit(high_score_text, (WIDTH - high_score_text.get_width() - 10, 10))
self.screen.blit(speed_text, (WIDTH - speed_text.get_width() - 10, 30))
def handle_menu(self, pos):
if self.game_state == GameState.MAIN_MENU:
if self.start_button.is_clicked(pos):
self.game_state = GameState.GAME
self.reset_game()
elif self.settings_button.is_clicked(pos):
self.game_state = GameState.SETTINGS
elif self.quit_button.is_clicked(pos):
self.save_settings()
pygame.quit()
sys.exit()
elif self.game_state == GameState.SETTINGS:
if self.walls_button.is_clicked(pos):
self.walls_on = not self.walls_on
self.walls_button.text = f"Walls: {'On' if self.walls_on else 'Off'}"
elif self.speed_up_button.is_clicked(pos):
self.speed = min(self.speed + 1, MAX_SPEED)
elif self.speed_down_button.is_clicked(pos):
self.speed = max(self.speed - 1, MIN_SPEED)
elif self.back_button.is_clicked(pos):
self.game_state = GameState.MAIN_MENU
self.save_settings()
elif self.game_state == GameState.GAME_OVER:
if self.restart_button.is_clicked(pos):
self.game_state = GameState.GAME
self.reset_game()
elif self.menu_button.is_clicked(pos):
self.game_state = GameState.MAIN_MENU
def draw_menu(self):
self.screen.fill(Colors.BLACK)
if self.game_state == GameState.MAIN_MENU:
self.start_button.draw(self.screen)
self.settings_button.draw(self.screen)
self.quit_button.draw(self.screen)
elif self.game_state == GameState.SETTINGS:
self.walls_button.draw(self.screen)
self.speed_up_button.draw(self.screen)
self.speed_down_button.draw(self.screen)
self.back_button.draw(self.screen)
speed_text = self.font.render(f"Current Speed: {self.speed}", True, Colors.WHITE)
self.screen.blit(speed_text, (WIDTH // 2 - speed_text.get_width() // 2, HEIGHT // 2 - 50))
elif self.game_state == GameState.GAME_OVER:
game_over_text = self.font.render("Game Over", True, Colors.RED)
score_text = self.font.render(f"Final Score: {self.score}", True, Colors.WHITE)
self.screen.blit(game_over_text, (WIDTH // 2 - game_over_text.get_width() // 2, HEIGHT // 2 - 100))
self.screen.blit(score_text, (WIDTH // 2 - score_text.get_width() // 2, HEIGHT // 2 - 50))
self.restart_button.draw(self.screen)
self.menu_button.draw(self.screen)
pygame.display.flip()
def run(self):
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
self.save_settings()
pygame.quit()
sys.exit()
elif event.type == pygame.MOUSEBUTTONDOWN:
pos = pygame.mouse.get_pos()
self.handle_menu(pos)
elif event.type == pygame.KEYDOWN:
self.handle_key_event(event)
if self.game_state == GameState.GAME:
if not self.move_snake():
self.game_state = GameState.GAME_OVER
self.draw_game()
else:
self.draw_menu()
self.clock.tick(self.speed)
def handle_key_event(self, event):
if self.game_state == GameState.GAME:
if event.key == pygame.K_UP and self.direction != Direction.DOWN:
self.direction = Direction.UP
elif event.key == pygame.K_DOWN and self.direction != Direction.UP:
self.direction = Direction.DOWN
elif event.key == pygame.K_LEFT and self.direction != Direction.RIGHT:
self.direction = Direction.LEFT
elif event.key == pygame.K_RIGHT and self.direction != Direction.LEFT:
self.direction = Direction.RIGHT
elif event.key == pygame.K_ESCAPE:
if self.game_state == GameState.GAME:
self.game_state = GameState.MAIN_MENU
elif self.game_state == GameState.SETTINGS:
self.game_state = GameState.MAIN_MENU
self.save_settings()
if __name__ == "__main__":
game = SnakeGame()
game.run()