Я недавно создал эту простую игру со змеями go, и я хотел попробовать запустить ее, и по какой-то причине окно не запускается на моей машине. Я уверен, что код работал раньше. Я пытался отладить некоторое время, но не могу понять, почему я застрял на черном экране. Кажется, что обнаружена нажатая клавиша, но на экране ничего не отображается.
import pygame
from pygame.locals import *
import random
# Global Color Variables
RED = (255, 0, 0)
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
CYAN = (0,255, 255)
# Set the speed of the Snake --> lower = faster
timeDelaySpeed = 0
class App:
def __init__(self):
self._running = True
self._display_surf = None
self.size = self.weight, self.height = 600, 700
# create the boarder
self.boarder = self.generateBoard()
# Initial Snake array with 3 Snake Blocks starting at (50, 50) and going left
self.snake = [Snake(WHITE, 10, 10, 150, 260), Snake(WHITE, 10, 10, 140, 260), Snake(WHITE, 10, 10, 130, 260)]
def on_init(self):
pygame.init()
self._display_surf = pygame.display.set_mode(self.size, pygame.HWSURFACE | pygame.DOUBLEBUF)
self._display_surf.fill(BLACK)
self._running = True
# Create Score Board
self.score = 0
self.displayScore(self.score, 45)
# Create Initial Food
self.initFood = Food(RED, 10, 10)
self._display_surf.blit(self.initFood.image, self.initFood.rect)
# display the initial Snake array
for i in range(len(self.snake)):
self._display_surf.blit(self.snake[i].image, self.snake[i].rect)
# display the board
for i in range(len(self.boarder)):
self._display_surf.blit(self.boarder[i].image, self.boarder[i].rect)
pygame.display.update()
"""
Helper Method that will run the events that are clicked on by the user
"""
def on_event(self):
# Checks if Snake crashes with itself - LOSE
for i in range(1, len(self.snake)):
if pygame.sprite.collide_rect(self.snake[0], self.snake[1]):
self.spaceToRestartText(20)
self.gameRestart()
if pygame.sprite.collide_rect(self.snake[0], self.snake[i]):
self.spaceToRestartText(20)
self.gameRestart()
# Check if Snake hits the boarder - LOSE
for i in range(len(self.boarder)):
if pygame.sprite.collide_rect(self.snake[0], self.boarder[i]):
self.spaceToRestartText(20)
self.gameRestart()
# Checks if Snake eats Food
if pygame.sprite.collide_rect(self.snake[0], self.initFood):
self.eatFood()
# set the direction based of key that is pressed
for event in pygame.event.get():
if event.type == pygame.QUIT:
self._running = False
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
# check for self collision before eating any food - weird collision method error fix
if self.move == 'right':
self.spaceToRestartText(20)
self.gameRestart()
break
self.move = 'left'
if event.key == pygame.K_RIGHT:
# check for self collision before eating any food
if self.move == 'left':
self.spaceToRestartText(20)
self.gameRestart()
break
self.move = 'right'
if event.key == pygame.K_UP:
# check for self collision before eating any food
if self.move == 'down':
self.spaceToRestartText(20)
self.gameRestart()
break
self.move = 'up'
if event.key == pygame.K_DOWN:
# check for self collision before eating any food
if self.move == 'up':
self.spaceToRestartText(20)
self.gameRestart()
break
self.move = 'down'
# if stored current direction is right
if self.move == 'right':
print("RIGHT")
# Reset the Board
self.boardReset()
# Store the current head of the snake
snakeHead = self.snake[0]
# remove the last block of the snake
self.snake.pop()
# create a new head for the snake that is shifted toward the right
newHead = snakeHead.moveRight()
# add the newly created head to the front of the list - make head
self.snake.insert(0, newHead)
# displays moved snake
for i in range(len(self.snake)):
self._display_surf.blit(self.snake[i].image, self.snake[i].rect)
pygame.display.update()
pygame.time.delay(timeDelaySpeed)
# if stored current direction is left
if self.move == 'left':
print("LEFT")
# Reset the Board
self.boardReset()
# Store the current head of the snake
snakeHead = self.snake[0]
# remove the last block of the snake
self.snake.pop()
# create a new head for the snake that is shifted toward the right
newHead = snakeHead.moveLeft()
# add the newly created head to the front of the list - make head
self.snake.insert(0, newHead)
# displays moved snake
for i in range(len(self.snake)):
self._display_surf.blit(self.snake[i].image, self.snake[i].rect)
pygame.display.update()
pygame.time.delay(timeDelaySpeed)
# if stored current direction is up
if self.move == 'up':
print("UP")
# Reset the Board
self.boardReset()
# Store the current head of the snake
snakeHead = self.snake[0]
# remove the last block of the snake
self.snake.pop()
# create a new head for the snake that is shifted toward the right
newHead = snakeHead.moveUp()
# add the newly created head to the front of the list - make head
self.snake.insert(0, newHead)
# displays moved snake
for i in range(len(self.snake)):
self._display_surf.blit(self.snake[i].image, self.snake[i].rect)
pygame.display.update()
pygame.time.delay(timeDelaySpeed)
# if stored current direction is down
if self.move == 'down':
print("DOWN")
# Reset the Board
self.boardReset()
# Store the current head of the snake
snakeHead = self.snake[0]
# remove the last block of the snake
self.snake.pop()
# create a new head for the snake that is shifted toward the right
newHead = snakeHead.moveDown()
# add the newly created head to the front of the list - make head
self.snake.insert(0, newHead)
# displays moved snake
for i in range(len(self.snake)):
self._display_surf.blit(self.snake[i].image, self.snake[i].rect)
pygame.display.update()
pygame.time.delay(timeDelaySpeed)
"""
Helper method that displays the current score on the screen.
"""
def displayScore(self, score, size):
font = pygame.font.SysFont("Comic Sans MS", size)
ScoreBoard = font.render("SCORE: {}".format(score), False, (WHITE))
self._display_surf.blit(ScoreBoard, [90, 100])
pygame.display.update()
"""
Helper method that will reset the screen:
Make screen Black
Add the current Food block
Add the current Score
"""
def boardReset(self):
# Erases the current screen
self._display_surf = pygame.display.set_mode(self.size, pygame.HWSURFACE | pygame.DOUBLEBUF)
self._display_surf.fill(BLACK)
# Create Score Board
self.displayScore(self.score, 45)
# Add Food
self._display_surf.blit(self.initFood.image, self.initFood.rect)
# Add Boarder
for i in range(len(self.boarder)):
self._display_surf.blit(self.boarder[i].image, self.boarder[i].rect)
"""
Eating food helper method
"""
def eatFood(self):
# Create a new Food at random location and display it
self.initFood = Food(RED, 10, 10)
self._display_surf.blit(self.initFood.image, self.initFood.rect)
# Create Score Board
self.score += 1
self.displayScore(self.score, 45)
# for i in range(len(self.snake)):
# self._display_surf.blit(self.snake[i].image, self.snake[i].rect)
#
# Store the last and second to last blocks of the snake
lastSnakeBlock = self.snake[-1]
secondToLastBlock = self.snake[-2]
# if the last two blocks are on the same horizontal line and the last block is to the left of the
# second to last block, add a block to the left side of the last block
if lastSnakeBlock.rect.y == secondToLastBlock.rect.y and lastSnakeBlock.rect.x < secondToLastBlock.rect.x:
newX = lastSnakeBlock.rect.x - 10
newSnakeBlock = Snake(lastSnakeBlock.color, lastSnakeBlock.width, lastSnakeBlock.height, newX,
lastSnakeBlock.rect.y)
self.snake.append(newSnakeBlock)
# if the last two blocks are on the same horizontal line and the last block is to the right of the
# second to last block, add a block to the right side of the last block
if lastSnakeBlock.rect.y == secondToLastBlock.rect.y and lastSnakeBlock.rect.x > secondToLastBlock.rect.x:
newX = lastSnakeBlock.rect.x + 10
newSnakeBlock = Snake(lastSnakeBlock.color, lastSnakeBlock.width, lastSnakeBlock.height, newX,
lastSnakeBlock.rect.y)
self.snake.append(newSnakeBlock)
# if the last two blocks are on the same vertical line and the last block is above the
# second to last block, add a block above the last block
if lastSnakeBlock.rect.x == secondToLastBlock.rect.x and lastSnakeBlock.rect.y < secondToLastBlock.rect.y:
newY = lastSnakeBlock.rect.y - 10
newSnakeBlock = Snake(lastSnakeBlock.color, lastSnakeBlock.width, lastSnakeBlock.height,
lastSnakeBlock.rect.x, newY)
self.snake.append(newSnakeBlock)
# if the last two blocks are on the same vertical line and the last block is below the
# second to last block, add a block below the last block
if lastSnakeBlock.rect.x == secondToLastBlock.rect.x and lastSnakeBlock.rect.y > secondToLastBlock.rect.y:
newY = lastSnakeBlock.rect.y + 10
newSnakeBlock = Snake(lastSnakeBlock.color, lastSnakeBlock.width, lastSnakeBlock.height,
lastSnakeBlock.rect.x, newY)
self.snake.append(newSnakeBlock)
for i in range(len(self.snake)):
self._display_surf.blit(self.snake[i].image, self.snake[i].rect)
"""
Takes the player back to initial start state
"""
def gameRestart(self):
# Erase the Board
self._display_surf = pygame.display.set_mode(self.size, pygame.HWSURFACE | pygame.DOUBLEBUF)
self._display_surf.fill(BLACK)
self._running = True
# Recreate the Snake
self.snake = [Snake(WHITE, 10, 10, 150, 260), Snake(WHITE, 10, 10, 140, 260), Snake(WHITE, 10, 10, 130, 260)]
# Create Score Board
self.score = 0
self.displayScore(self.score, 45)
# Create Initial Food
self.initFood = Food(RED, 10, 10)
self._display_surf.blit(self.initFood.image, self.initFood.rect)
# set current move to nothing
self.move = ''
# draw in the boarder
for i in range(len(self.boarder)):
self._display_surf.blit(self.boarder[i].image, self.boarder[i].rect)
# display the initial Snake array
for i in range(len(self.snake)):
self._display_surf.blit(self.snake[i].image, self.snake[i].rect)
pygame.display.update()
"""
Creates a List of Blocks that outline the Boarder of the snake game
"""
def generateBoard(self):
boardCorners = []
boardTop = []
boardSide1 = []
boardSide2 = []
boardBottom = []
# Makes (0,0) of board = (100, 210)
# top left corner
boardCorners.append(Snake(CYAN, 10, 10, 90, 200))
# top right corner
boardCorners.append(Snake(CYAN, 10, 10, 500, 200))
# bottom left corner
boardCorners.append(Snake(CYAN, 10, 10, 90, 610))
# bottom right corner
boardCorners.append(Snake(CYAN, 10, 10, 500, 610))
# top and bottom sides
topCoord = 100
for i in range(40):
boardTop.append(Snake(CYAN, 10, 10, topCoord, 200))
boardBottom.append(Snake(CYAN, 10, 10, topCoord, 610))
topCoord += 10
# sides of board
sideCoord = 210
for i in range(40):
boardSide1.append(Snake(CYAN, 10, 10, 90, sideCoord))
boardSide2.append(Snake(CYAN, 10, 10, 500, sideCoord))
sideCoord += 10
# combine all parts
allBoarder = boardCorners + boardTop + boardSide1 + boardSide2 + boardBottom
# return list of blocks
return allBoarder
"""
Allows player to restart a game by pressing space bar - displays losing screen
"""
def spaceToRestartText(self, size):
self._display_surf = pygame.display.set_mode(self.size, pygame.HWSURFACE | pygame.DOUBLEBUF)
self._display_surf.fill(BLACK)
self.youLoseText(50)
self.yourScoreText(25)
font = pygame.font.SysFont("Comic Sans MS", size)
text_surface = font.render("Press space bar to play again", True, WHITE)
text_rect = text_surface.get_rect(center=(self.weight / 2, self.height / 2))
self._display_surf.blit(text_surface, text_rect)
pygame.display.flip()
done = False
while not done:
for event in pygame.event.get():
if event.type == pygame.QUIT:
self.running = False
done = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_SPACE:
done = True
"""
Helper function that prints 'YOU LOSE!'
"""
def youLoseText(self, size):
font = pygame.font.SysFont("Comic Sans MS", size)
text_surface = font.render("YOU LOSE!", True, WHITE)
# Shift height up so no collision with space bar text
text_rect = text_surface.get_rect(center=(self.weight / 2, (self.height / 2) - 75))
self._display_surf.blit(text_surface, text_rect)
pygame.display.flip()
"""
Helper function that prints your score at loss
"""
def yourScoreText(self, size):
font = pygame.font.SysFont("Comic Sans MS", size)
text_surface = font.render("Your Score was: " + str(self.score), True, WHITE)
# Shift height up so no collision with space bar text
text_rect = text_surface.get_rect(center=(self.weight / 2, (self.height / 2) - 35))
self._display_surf.blit(text_surface, text_rect)
pygame.display.flip()
def on_loop(self):
pass
def on_render(self):
pass
def on_cleanup(self):
pygame.quit()
"""
Game Loop
"""
def on_execute(self):
if self.on_init() == False:
self._running = False
self.move = ''
while (self._running):
self.on_event()
self.on_loop()
self.on_render()
self.on_cleanup()
"""
Class to create a Food at a random coordinate
"""
class Food(pygame.sprite.Sprite):
def __init__(self, color, width, height):
# Call the parent class (Sprite) constructor
pygame.sprite.Sprite.__init__(self)
# Create an image of the block, and fill it with a color.
# This could also be an image loaded from the disk.
self.image = pygame.Surface([width, height])
self.image.fill(color)
# Fetch the rectangle object that has the dimensions of the image
# Update the position of this object by setting the values of rect.x and rect.y
self.rect = self.image.get_rect()
# set the position of the Food
# TODO: change values in randint to use the input width and height
randX = random.randint(10,49) * 10
randY = random.randint(21,60) * 10
self.rect.x = randX
self.rect.y = randY
class Snake(pygame.sprite.Sprite):
# TODO: Make Snake a chain of Blocks
def __init__(self, color, width, height, positionX, positionY):
# Call the parent class (Sprite) constructor
pygame.sprite.Sprite.__init__(self)
# Create an image of the block, and fill it with a color.
# This could also be an image loaded from the disk.
self.image = pygame.Surface([width, height])
self.image.fill(color)
# Fetch the rectangle object that has the dimensions of the image
# Update the position of this object by setting the values of rect.x and rect.y
self.rect = self.image.get_rect()
# set the position of the snake
self.rect.x = positionX
self.rect.y = positionY
# set the inputs the usable variables for later code
self.color = color
self.width = width
self.height = height
"""
Method the will change the direction of the Snake towards the left
"""
def moveLeft(self):
newX = self.rect.x - 10
return Snake(self.color, self.width, self.height, newX, self.rect.y)
"""
Method that will change the direction of the Snake toward the right
"""
def moveRight(self):
newX = self.rect.x + 10
return Snake(self.color, self.width, self.height, newX, self.rect.y)
"""
Method that will change the direction of the Snake to go upward
"""
def moveUp(self):
newY = self.rect.y - 10
return Snake(self.color, self.width, self.height, self.rect.x, newY)
"""
Method that will change the direction of the Snake to go downward
"""
def moveDown(self):
newY = self.rect.y + 10
return Snake(self.color, self.width, self.height, self.rect.x, newY)
if __name__ == "__main__":
theApp = App()
theApp.on_execute()
