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- import pygame
-
- STEP = 44
-
-
- class Food():
- def __init__(self, x, y, surface):
- self.x = x * STEP
- self.y = y * STEP
- self.surface = surface
- self.image = pygame.image.load("food.png").convert()
-
- def draw(self):
- self.surface.blit(self.image, (self.x, self.y))
-
- class Snake():
- def __init__(self, x, y, surface):
- self.x = [x*STEP]
- self.y = [y*STEP] # 用两个列表来存储贪吃蛇每个节点的位置
- self.length = 1 # 贪吃蛇的长度
- self.direction = 0 # 0表示向右, 1表示向下, 2表示向左, 3表示向上
- self.image = pygame.image.load("snake.png").convert() # 加载蛇
- self.surface = surface
- self.step = 44 # 运动步长
- self.updateCount = 0 # 更新次数
-
- # 虽然有这么多节点,但是有length来控制界面上画出多少蛇的节点
- for i in range(1, 100):
- self.x.append(-100)
- self.y.append(-100)
-
- def draw(self):
- for i in range(self.length):
- self.surface.blit(self.image, (self.x[i],self.y[i]))
-
- def moveRight(self):
- self.direction = 0
-
- def moveLeft(self):
- self.direction = 2
-
- def moveUp(self):
- self.direction = 3
-
- def moveDown(self):
- self.direction = 1
-
- def update(self):
- self.updateCount += 1
- if self.updateCount > 2:
- for i in range(self.length-1, 0, -1):
- self.x[i] = self.x[i-1]
- self.y[i] = self.y[i-1]
- if self.direction == 0:
- self.x[0] = self.x[0] + self.step # 向右
- if self.direction == 1:
- self.y[0] = self.y[0] + self.step # 向下
- if self.direction == 2:
- self.x[0] = self.x[0] - self.step # 向左
- if self.direction == 3:
- self.y[0] = self.y[0] - self.step # 向上
- self.updateCount = 0
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