当你试图收集寿司时，我试图让忍者追逐忍者。但是当我尝试运行代码时，它只是让警卫向右移动（到屏幕上运行的地方但从未返回到屏幕上）并且不会试图追逐忍者。我希望能够让警卫在屏幕上追逐忍者。如果我的代码没有充分理解，我会提前道歉。这对我来说都是新的。我目前正在使用Python 3.2.5来运行此代码。我如何把它带到守卫追逐忍者的地方？
import pygame
import time
import random
pygame.init()
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)
green = (0, 155, 0)
display_width = 800
display_height = 600
gameDisplay = pygame.display.set_mode((display_width, display_height))
pygame.display.set_caption('The Hungry Sushi Warrior')
clock = pygame.time.Clock()
block_size = 40
SushiThickness = 40
GuardThickness = 50
FPS = 15
direction = "right"
smallfont = pygame.font.SysFont("comicsansms", 18)
medfont = pygame.font.SysFont("comicsansms", 40)
largefont = pygame.font.SysFont("comicsansms", 80)
def pause():
paused = True
while paused:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_c:
paused = False
elif event.key == pygame.K_q:
pygame.quit()
quit()
gameDisplay.fill(white)
message_to_screen("Paused",
black,
-100,
size = "large")
message_to_screen("Press C to continue or Q to quit.",
black,
25)
pygame.display.update()
clock.tick(5)
def gamelives(lives):
text = smallfont.render("Lives: "+str(lives), True, black)
gameDisplay.blit(text, [700, 0])
def score(score):
text = smallfont.render("Score: "+str(score), True, black)
gameDisplay.blit(text, [0, 0])
def ninjaGuardGen():
randGuardX = round(random.randrange(0, display_width-GuardThickness))
randGuardY = round(random.randrange(0, display_height-GuardThickness))
return randGuardX, randGuardY
def randSushiGen():
randSushiX = round(random.randrange(0, display_width-SushiThickness))
randSushiY = round(random.randrange(0, display_height-SushiThickness))
return randSushiX, randSushiY
def game_intro():
intro = True
while intro:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_c:
intro = False
if event.key == pygame.K_q:
pygame.quit()
quit()
gameDisplay.fill(white)
message_to_screen("Welcome to The Hungry Sushi Warrior",
green,
-100,
size = "medium")
message_to_screen("The objective of the game is to eat the different sushi",
black,
-30)
message_to_screen("The more sushi you eat the faster the guards move and the more upgrades you get",
black,
10)
message_to_screen("If you run into the edges or if you run into a guard you die!",
black,
50)
message_to_screen("Press C to play, P to pause, or Q to quit.",
black,
180)
pygame.display.update()
clock.tick(15)
def guard(block_size, guardList):
global guardHead
if guardDirection == "rght":
guardHead = pygame.transform.rotate(guardimg, 0)
elif guardDirection == "left":
gaurdHead = pygame.transform.rotate(guardimg, 0)
elif guardDirection == "up":
guardHead = guardimg
else:
guardHead = pygame.transform.rotate(guardimg, 0)
if len(guardList) == 1:
gameDisplay.blit(guardHead, (guardList[0][0], guardList[0][1]))
else:
gameDisplay.blit(guardHead, (guardList[-1][0], guardList[-1][1]))
def ninja(block_size, ninjaList):
if direction == "right":
head = pygame.transform.rotate(ninjaimg, 270)
if direction == "left":
head = pygame.transform.rotate(ninjaimg, 90)
if direction == "up":
head = ninjaimg
if direction == "down":
head = pygame.transform.rotate(ninjaimg, 180)
if len (ninjaList) == 1:
gameDisplay.blit(head,(ninjaList[0][0], ninjaList[0][1]))
else:
gameDisplay.blit(head, (ninjaList[-1][0], ninjaList[-1][1]))
# for XnY in ninjaList[:-1]:
# pygame.draw.rect(gameDisplay, green, [XnY[0], XnY[1], block_size, block_size])
def text_objects(text, color, size):
if size == "small":
textSurface = smallfont.render(text, True, color)
elif size == "medium":
textSurface = medfont.render(text, True, color)
elif size == "large":
textSurface = largefont.render(text, True, color)
return textSurface, textSurface.get_rect()
def message_to_screen(msg, color, y_displace = 0, size = "small"):
textSurf, textRect = text_objects(msg, color, size)
textRect.center = (display_width/2), (display_height/2) + y_displace
gameDisplay.blit(textSurf, textRect)
def gameLoop():
guardStartX, guardStartY = ninjaGuardGen()
global direction
global guardDirection
ninjascore = 0
lives = 3
direction = 'right'
guardDirection = 'right'
gameExit = False
gameOver = False
lead_x = display_width/2
lead_y = display_height/2
speed = 15
guardSpeed = 7
guardX = guardStartX
guardY = guardStartY
guardXChange = guardSpeed
guardYChange = 0
lead_x_change = speed
lead_y_change = 0
guardList = []
guardLength = 1
ninjaList = []
ninjaLength = 1
randSushiX, randSushiY = randSushiGen()
randGuardX, randGuardY = ninjaGuardGen()
while not gameExit:
while gameOver == True:
gameDisplay.fill(white)
message_to_screen("Game Over",
red, -50,
size = "large")
message_to_screen("Press C to play agian or Q to quit",
black,
50,
size = "medium")
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameOver = False
gameExit = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_q:
gameExit = True
gameOver = False
if event.key == pygame.K_c:
gameLoop()
pygame.display.update()
gameLives = False
while gameOver == False:
GuardDirections = ['left', 'right', 'up', 'down']
GetGuardDirectionNum = round(random.randrange(0, len(GuardDirections)))
guardDirection = GuardDirections[GetGuardDirectionNum]
if guardDirection == 'left':
GuardXChange = -guardSpeed
GuardYChange = 0
elif guardDirection == 'right':
GuardXChange = guardSpeed
GuardYChange = 0
elif guardDirection == 'up':
GuardYChange = -guardSpeed
GuardXChange = 0
elif guardDirection == 'down':
GuardYChange = guardSpeed
GuardXChange = 0
for event in pygame.event.get():
if event.type == pygame.QUIT:
gameExit = True
gameOver = False
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
direction = "left"
lead_x_change = -speed
lead_y_change = 0
elif event.key == pygame.K_RIGHT:
direction = "right"
lead_x_change = speed
lead_y_change = 0
elif event.key == pygame.K_UP:
direction = "up"
lead_y_change = -speed
lead_x_change = 0
elif event.key == pygame.K_DOWN:
direction = "down"
lead_y_change = speed
lead_x_change = 0
elif event.key == pygame.K_p:
pause()
if lead_x >= display_width or lead_x < 0 or lead_y >= display_height or lead_y < 0:
gameOver = True
lead_x += lead_x_change
lead_y += lead_y_change
guardX += guardXChange
guardY += guardYChange
gameDisplay.fill(white)
gameDisplay.blit(sushiimg, (randSushiX, randSushiY))
guardHead = []
guardHead.append(guardX)
guardHead.append(guardY)
guardList.append(guardHead)
ninjaHead = []
ninjaHead.append(lead_x)
ninjaHead.append(lead_y)
ninjaList.append(ninjaHead)
## if len(ninjaHead) > ninjaLength:
## del ninjaList[0]
score(ninjascore)
gamelives(lives)
guard(block_size, guardList)
ninja(block_size, ninjaList)
pygame.display.update()
if lead_x > randGuardX and lead_x < randGuardX + GuardThickness or lead_x + block_size > randGuardX and lead_x + block_size < randGuardX + GuardThickness:
if lead_y > randGuardY and lead_y < randGuardY + GuardThickness:
randGuardX, randGuardY = ninjaGuardGen()
lives -= 1
if lives == 0:
gameOver = True
gameDisplay.fill(white)
message_to_screen("Game Over",
red, -50,
size = "large")
message_to_screen("Press C to play agian or Q to quit",
black,
50,
size = "medium")
else:
gameOver = False
elif lead_y + block_size > randGuardY and lead_y + block_size < randGuardY + GuardThickness:
randGuardX, randGuardY = ninjaGuardGen()
lives -= 1
if lives == 0:
gameOver = True
gameDisplay.fill(white)
message_to_screen("Game Over",
red, -50,
size = "large")
message_to_screen("Press C to play agian or Q to quit",
black,
50,
size = "medium")
else:
gameOver = False
if lead_x > randSushiX and lead_x < randSushiX + SushiThickness or lead_x + block_size > randSushiX and lead_x + block_size < randSushiX + SushiThickness:
if lead_y > randSushiY and lead_y < randSushiY + SushiThickness:
randSushiX, randSushiY = randSushiGen()
ninjascore += 1
elif lead_y + block_size > randSushiY and lead_y + block_size < randSushiY + SushiThickness:
randSushiX, randSushiY = randSushiGen()
ninjascore += 1
if ninjascore != 0 and ninjascore % 10 == 0 and gameLives == False:
lives += 1
gameLives = True
speed += 5
elif ninjascore % 10 == 1:
gameLives == False
pygame.display.update()
clock.tick(FPS)
pygame.quit()
quit()
game_intro()
gameLoop()
答案 0 :(得分：-1)
警卫方向代码中存在错误。寻找GuardYChange = 10。 （我想应该是0。）
那就是说，我没有看到主循环中的任何逻辑将守卫的位置与忍者的比较。尝试减去后卫的X和领先的X，后卫的Y和领先的Y，并比较哪些是更大的差异。然后让警卫走向那个方向。
就是这样：
dx = lead_x - GuardX
dy = lead_y - GuardY
if abs(dx) > abs(dy):
# chase left-right
guardDirection = 'right' if dx > 0 else 'left'
else:
# chase up-down
guardDirection = 'down' if dy > 0 else 'up'