Created
August 6, 2014 10:56
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Snake
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import sys | |
import random | |
import pygame | |
pygame.init() | |
grid = (39, 29) | |
cell = (20, 20) | |
width = grid[0] * cell[0] | |
height = grid[1] * cell[1] | |
size = (width, height) | |
screen = pygame.display.set_mode(size) | |
directions = [(0, -1), (0, 1), (1, 0), (-1, 0)] | |
direction = directions[2] | |
actual_direction = directions[2] | |
snake = [] | |
content = [[""] * grid[1] for x in range(grid[0])] | |
pygame.time.set_timer(31, 75) | |
pygame.event.post(pygame.event.Event(31)) | |
def get_mouse_coord(): | |
if len(snake) == grid[0] * grid[1]: | |
pygame.time.set_timer(31, 0) | |
while True: | |
x = random.randint(0, grid[0] - 1) | |
y = random.randint(0, grid[1] - 1) | |
if 's' not in content[x][y]: | |
return x, y | |
def get_rat_coord(): | |
candidates = [] | |
for x in range(grid[0]-1): | |
for y in range(grid[1]-1): | |
if content[x][y] == '' and content[x+1][y] == '' and content[x][y+1] == '' and content[x+1][y+1] == '': | |
candidates += [(x, y)] | |
if len(candidates) == 0: | |
return None | |
return random.choice(candidates) | |
def init(): | |
snake.extend([(grid[0]/2, grid[1]/2), (grid[0]/2-1, grid[1]/2)]) | |
content[grid[0]/2][grid[1]/2] = 's' | |
content[grid[0]/2-1][grid[1]/2] = 's' | |
mouse = get_mouse_coord() | |
content[mouse[0]][mouse[1]] = 'm' | |
init() | |
rat_position = None | |
rat_life = None | |
rat_life_max = 50 | |
rat_cycle = 0 | |
rat_cycle_max = 5 | |
score = 0 | |
while True: | |
event = pygame.event.wait() | |
if event.type == pygame.QUIT: | |
sys.exit() | |
elif event.type == pygame.KEYDOWN: | |
if 273 <= event.key <= 276: | |
dir_ = directions[event.key - 273] | |
if dir_[0] != -1 * actual_direction[0] or dir_[1] != -1 * actual_direction[1]: | |
direction = dir_ | |
elif event.type == 31: | |
head = ((snake[0][0] + direction[0]) % grid[0], (snake[0][1] + direction[1]) % grid[1]) | |
tail = snake[-1] | |
if 'm' in content[tail[0]][tail[1]] or 'r' in content[tail[0]][tail[1]]: | |
content[tail[0]][tail[1]] = 's' | |
else: | |
snake = snake[:-1] | |
content[tail[0]][tail[1]] = '' | |
if rat_life is not None: | |
rat_life -= 1 | |
if rat_life == 0: | |
content[rat_position[0]][rat_position[1]] = '' | |
content[rat_position[0]+1][rat_position[1]] = '' | |
content[rat_position[0]][rat_position[1]+1] = '' | |
content[rat_position[0]+1][rat_position[1]+1] = '' | |
rat_position = None | |
rat_life = None | |
if 's' in content[head[0]][head[1]]: | |
pygame.time.set_timer(31, 0) | |
elif 'r' in content[head[0]][head[1]]: | |
score += 20 + 480 * rat_life / rat_life_max | |
content[rat_position[0]][rat_position[1]] = '' | |
content[rat_position[0]+1][rat_position[1]] = '' | |
content[rat_position[0]][rat_position[1]+1] = '' | |
content[rat_position[0]+1][rat_position[1]+1] = '' | |
content[head[0]][head[1]] = 'sr' | |
rat_position = None | |
rat_life = None | |
snake = [head] + snake | |
elif 'm' in content[head[0]][head[1]]: | |
score += 10 | |
content[head[0]][head[1]] = 'sm' | |
mouse = get_mouse_coord() | |
content[mouse[0]][mouse[1]] = 'm' | |
snake = [head] + snake | |
# Rat | |
rat_cycle += 1 | |
if rat_cycle == rat_cycle_max: | |
rat_position = get_rat_coord() | |
if rat_position is not None: | |
rat_life = rat_life_max | |
content[rat_position[0]][rat_position[1]] = 'r' | |
content[rat_position[0]+1][rat_position[1]] = 'r' | |
content[rat_position[0]][rat_position[1]+1] = 'r' | |
content[rat_position[0]+1][rat_position[1]+1] = 'r' | |
rat_cycle = 0 | |
else: | |
content[head[0]][head[1]] = 's' | |
snake = [head] + snake | |
actual_direction = direction | |
screen.fill((0, 0, 0)) | |
for x in range(grid[0]): | |
for y in range(grid[1]): | |
if content[x][y] == 's': | |
screen.fill((255, 255, 255), pygame.Rect(x * cell[0], y * cell[1], cell[0], cell[1])) | |
elif content[x][y] == 'm': | |
screen.fill((100, 100, 100), pygame.Rect(x * cell[0], y * cell[1], cell[0], cell[1])) | |
elif content[x][y] == 'r': | |
screen.fill((140, 93, 32), pygame.Rect(x * cell[0], y * cell[1], cell[0], cell[1])) | |
elif content[x][y] == 'sm': | |
screen.fill((200, 200, 200), pygame.Rect(x * cell[0], y * cell[1], cell[0], cell[1])) | |
elif content[x][y] == 'sr': | |
screen.fill((138, 117, 90), pygame.Rect(x * cell[0], y * cell[1], cell[0], cell[1])) | |
if snake[0] == (x, y): | |
if direction == directions[0]: # UP | |
screen.fill((200, 100, 100), pygame.Rect(x * cell[0] + 4, y * cell[1] + 2, 4, 8)) | |
screen.fill((200, 100, 100), pygame.Rect(x * cell[0] + 12, y * cell[1] + 2, 4, 8)) | |
elif direction == directions[1]: # DOWN | |
screen.fill((200, 100, 100), pygame.Rect(x * cell[0] + 4, y * cell[1] + 10, 4, 8)) | |
screen.fill((200, 100, 100), pygame.Rect(x * cell[0] + 12, y * cell[1] + 10, 4, 8)) | |
elif direction == directions[2]: # RIGHT | |
screen.fill((200, 100, 100), pygame.Rect(x * cell[0] + 10, y * cell[1] + 4, 8, 4)) | |
screen.fill((200, 100, 100), pygame.Rect(x * cell[0] + 10, y * cell[1] + 12, 8, 4)) | |
elif direction == directions[3]: # LEFT | |
screen.fill((200, 100, 100), pygame.Rect(x * cell[0] + 2, y * cell[1] + 4, 8, 4)) | |
screen.fill((200, 100, 100), pygame.Rect(x * cell[0] + 2, y * cell[1] + 12, 8, 4)) | |
myfont = pygame.font.SysFont("Monospace", 40) | |
label = myfont.render(str(score), 1, (255, 255, 255)) | |
screen.blit(label, (30, 30)) | |
if rat_life is not None: | |
s = pygame.Surface((width, height)).convert_alpha() | |
s.fill((255, 0, 0, 128), pygame.Rect(50, height - 70, (width - 100) * rat_life / rat_life_max, 20)) | |
screen.blit(s, (0, 0), special_flags=pygame.BLEND_RGBA_ADD) | |
pygame.display.flip() |
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