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# 貪食蛇
## 簡介
這是一個簡單的貪食蛇遊戲程式，使用了 Pygame 庫來進行遊戲畫面渲染和音效處理。遊戲中包含了基本的貪食蛇功能，如控制蛇的移動、增加蛇的長度、與食物互動、與自己或牆壁碰撞等。
## Code
```python=
import pygame
from pygame import mixer
import random, math, os
import string
pygame.mixer.pre_init(44100,-16,2,512)
mixer.init() # 初始化音樂撥放
pygame.init()
# 視窗設定
screen_width = 700
screen_height = 600
screen = pygame.display.set_mode((screen_width,screen_height))
clock = pygame.time.Clock() # 時間控制
# 讀取儲存檔案
with open(os.path.join('file','save.txt'),'r') as file:
SCORE_SAVE = file.readlines()
# 音效設定
dead_sound = pygame.mixer.Sound(os.path.join('music','dead_sound.wav'))
dead_sound.set_volume(0.3)
eat_sound = pygame.mixer.Sound(os.path.join('music','eat_sound.wav'))
eat_sound.set_volume(0.43)
pygame.mixer.music.load(os.path.join('music','background_music.mp3'))
pygame.mixer.music.play(-1,0)
pygame.mixer.music.set_volume(0.5)
# 變數
RED = (255,0,0)
GREEN = (0,255,0)
BLACK = (0,0,0)
WHITE = (255,255,255)
YELLOW = (255,255,87)
PINK = (255,140,250)
GREEN_BLUE = (10,209,139)
GREY = (150,150,150)
GREY2 = (130,130,130)
DARK_YELLOW = (228,128,16)
FPS = 15
score = 0
# 蛇設定 (頭、身體還會在主畫面設定初始化)
snake_size = 18
snake_speed = 20
snake_body = [(80,100),(60,100),(40,100)] # 蛇身體
snake_head = snake_body[0] # 蛇頭
snake_len = len(snake_body)
# 顏色設定
snake_color = PINK
food_color = GREEN_BLUE
score_color = BLACK
# 食物物件
class Food():
def __init__(self,x,y):
self.img = pygame.Surface((20,20))
self.img.fill(food_color)
self.rect = self.img.get_rect()
self.rect.x = x
self.rect.y = y
def update(self):
screen.blit(self.img, self.rect)
# 顯示文字函數
def text_draw(text, font, color, x,y):
img = font.render(text, True, color)
screen.blit(img, (x,y))
# 遊戲字形設定
score_font = pygame.font.SysFont('Bauhaus 93', 40) # 分數字形
title_font = pygame.font.SysFont('Bauhaus 93', 70) # title 字形
rules_font = pygame.font.SysFont('Bauhaus 93', 25) # rule 字形
start_font = pygame.font.SysFont('Bauhaus 93', 35) # start 字形
die_font = pygame.font.SysFont('Bauhaus 93', 55) # start 字形
c_font = pygame.font.SysFont('Bauhaus 93', 25) # 繼續字形
rank_font = pygame.font.SysFont('Bauhaus 93', 45)
new_record_font = pygame.font.SysFont('Bauhaus 93', 30)
# 遊戲主畫面內容設定
title = 'Greedy Snake'
rules = '[WASD] to control the Snake!'
start = 'PRESS [SPACE] TO START'
Fake_snake = [(520,222),(500,222),(480,222),(460,222)]
# 死亡顯示畫面設定
die = 'YOU ARE DEAD!!'
score_text = 'YOUR SCROE: '
Continue = 'PRESS [SPACE] TO CONTINUE'
# 遊戲迴圈前置設定
running = True
direction = 1 # 預設往右移動
food_check = False # 確認是否有食物
menu = 0 # 畫面
save = False # 使否已儲存分數
new_record = 99 # 進到榜單的名次
new_high = False # 是否破紀錄
# 遊戲迴圈
while(running):
clock.tick(FPS)
screen.fill(YELLOW)
# 取得事件===================================
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
if event.type == pygame.KEYDOWN:
if (event.key == pygame.K_SPACE) and (menu != 1):
menu += 1
# 顯示主菜單=================================
if menu==0:
text_draw(title,title_font,PINK, 140,screen_height/4) # 印出標題
text_draw(rules,rules_font,GREY, 200,360) # 印出規則
text_draw(start,start_font,GREEN_BLUE, 170,(screen_height/3)*2) # 印出開始
for i in range(len(Fake_snake)): # 印出假蛇
pygame.draw.rect(screen, snake_color, pygame.Rect(Fake_snake[i][0],Fake_snake[i][1],snake_size, snake_size))
# 初始化遊戲
snake_body = [(80,100),(60,100),(40,100)] # 蛇身體
snake_head = snake_body[0] # 蛇頭
direction = 1
food_check = False
save = False
score = 0
new_record = 99
new_high = False
# 開始遊戲===================================
elif menu==1:
# 生成食物
if food_check==False:
x = random.randrange(0,screen_width-20)
y = random.randrange(0,screen_height-20)
food = Food(x,y)
food_check = True
# 蛇移動和自我碰撞-----------------------------------------------------------------------
# 取得蛇移動方向
key_pressed = pygame.key.get_pressed()
if key_pressed[pygame.K_d] and (direction !=2): # 往右
direction = 1
if key_pressed[pygame.K_a] and (direction !=1): # 往左
direction = 2
if key_pressed[pygame.K_w] and (direction !=4): # 往上
direction = 3
if key_pressed[pygame.K_s] and (direction !=3): # 往下
direction = 4
# 蛇移動
if direction == 1:
snake_head = (snake_head[0]+snake_speed, snake_head[1])
elif direction == 2:
snake_head = (snake_head[0]-snake_speed, snake_head[1])
elif direction == 3:
snake_head = (snake_head[0], snake_head[1]-snake_speed)
elif direction == 4:
snake_head = (snake_head[0], snake_head[1]+snake_speed)
# 與自己身體碰撞
head_rect = pygame.Rect(snake_head[0],snake_head[1],snake_size,snake_size) # 蛇頭 Rect設定
for body in snake_body:
body_rect = pygame.Rect(body[0],body[1],snake_size,snake_size) # 蛇身 Rect設定
if pygame.Rect.colliderect(head_rect, body_rect): # 碰撞產生
menu = -1
dead_sound.play()
# 加蛇頭、去蛇尾
snake_body.insert(0,snake_head)
snake_body.pop(len(snake_body)-1)
# 碰撞--------------------------------------------------------------------------------
# 與食物碰撞
if pygame.Rect.colliderect(head_rect, food.rect):
eat_sound.play()
if direction == 1:
snake_head = (snake_head[0]+10, snake_head[1])
if direction == 2:
snake_head = (snake_head[0]-10, snake_head[1])
if direction == 3:
snake_head = (snake_head[0], snake_head[1]-10)
if direction == 4:
snake_head = (snake_head[0], snake_head[1]+10)
snake_body.insert(0,snake_head) # 增加蛇長度
score += 10 # 分數增加
del food # 刪除食物
food_check = False
# 與邊界碰撞
if snake_head[0]+(snake_size) >= screen_width or snake_head[0]<=0:
menu = -1
dead_sound.play()
if snake_head[1]+(snake_size) >= screen_height or snake_head[1]<=0:
menu = -1
dead_sound.play()
# 螢幕顯示-----------------------------------------------------------------------------
if food_check==True: # 如果食物存在
food.update() # 顯示食物
snake_len = len(snake_body) # 蛇長度更新
for i in range(snake_len): # 顯示蛇
pygame.draw.rect(screen, snake_color, pygame.Rect(snake_body[i][0],snake_body[i][1],snake_size, snake_size))
text_draw(str(score),score_font,score_color,15,10) # 分數顯示
# 顯示分數畫面===============================
elif menu == -1:
# 儲存分數紀錄(如果有進前五名)
if save == False:
change_index = 0
save_sure = False
for i in range(5):
if int(SCORE_SAVE[i]) <= score : # 如果原始分數<=新分數
if int(SCORE_SAVE[i]) == score: # 相同分數不增加紀錄
new_record = i
break
if i == 4: # 如果新分數是第五名
SCORE_SAVE[i]=str(score) # 將新分數加入排行榜(覆蓋原儲存分數)
new_record = i
break
else:
if i == 0: # 檢查是否破紀錄
new_high = True
new_record = i
save_sure = True # 是否確定儲存
change_index = i # 要加入排行的名次
break
# 更新儲存分數
index = 4 # 最後排行開始更新
while save_sure:
if index == 4: # 最後一名(第五名)更新
st = SCORE_SAVE[index-1].replace('\n',' ')
SCORE_SAVE[index]= st
#print(st)
elif index==change_index: # 到達要更換(刷新)的名次
SCORE_SAVE[index]=str(score)+'\n'
save_sure = False
else: # 其他名次更新
SCORE_SAVE[index]=SCORE_SAVE[index-1]
index -= 1
# 回傳給檔案
with open(os.path.join('file','save.txt'),'w') as file:
file.writelines(SCORE_SAVE)
save = True
# 顯示畫面
for i in range(snake_len): # 顯示蛇死亡狀態
pygame.draw.rect(screen, snake_color, pygame.Rect(snake_body[i][0],snake_body[i][1],snake_size, snake_size))
text_draw(die, die_font, RED, 150,50) # 顯示[死亡]字樣
text_draw(score_text, score_font, GREEN_BLUE, 150,110) # 顯示[分數標題]字樣
text_draw(str(score), score_font, GREEN_BLUE, 430,110) # 顯示[分數]字樣
text_draw(Continue, c_font, BLACK, 190,480) # 顯示[繼續]字樣
# 顯示排行分數
for i in range(5):
n = i+1
text_draw(f'No.{n}: ', rank_font, GREY2, 160, 170+48*i)
text_draw(SCORE_SAVE[i].replace('\n',' '), rank_font, GREY2, 280, 170+48*i)
# 顯示新分數在榜單上名次 and 是否破紀錄
if new_record < 5:
n = new_record+1
text_draw(f'No.{n}: ', rank_font, DARK_YELLOW, 160+3, 170+48*new_record+2)
text_draw(SCORE_SAVE[new_record].replace('\n',' '), rank_font, DARK_YELLOW, 280+3, 170+48*new_record+2)
if new_high:
text_draw('# New Record!!', new_record_font, RED, 410, 180)
text_draw('______________', new_record_font, RED, 410, 183)
# 螢幕更新==================================
pygame.display.update()
print(score)
pygame.quit()
```
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