使用箭头键移动 pygame 目标图像（范围）时出现问题
Problems making pygame target image (scope) move with arrow keys
当我们 运行 我们 pygame 的代码时，我们的目标范围图像不会移动，但我们的机器人会生成。我们正在尝试使用我们的箭头键来移动它们，我包含了我们所有的代码。
在我们最新的移动试用代码下注释掉的是我们尝试过的另外两件事。
import pygame, sys
from graphics import *
import time
import random
pygame.init()
level=1
bg = pygame.image.load('bg.png')
bg_width = 800
pygame.display.set_caption('Robot Apocalypse')
surfacew = 1054
surfacel = 562
surface = pygame.display.set_mode((surfacew,surfacel))
black = (0, 0, 0)
score = 0
#player_health = 99
alive=True
targetImg = pygame.image.load('target.png')
targetImg = pygame.transform.scale(targetImg, (40, 40))
targetxy = targetImg.get_rect()
targetx = targetxy[0]
targety = targetxy[1]
def move_target(targetImg):
pygame.event.clear()
while alive == True:
keys_pressed = pygame.key.get_pressed()
if keys_pressed[pygame.K_LEFT]:
targetx -= 5
if keys_pressed[pygame.K_RIGHT]:
targetx += 5
if keys_pressed[pygame.K_UP]:
targety -= 5
if keys_pressed[pygame.K_DOWN]:
targety += 5
pygame.display.update()
# pygame.event.clear()
# for event in pygame.event.get():
# if event.type ==KEYDOWN:
# if event.key == K_LEFT:
# direction = MOVE_LEFT
# elif event.key == K_RIGHT:
# direction = MOVE_RIGHT
# elif event.type == KEYUP:
# if event.key == K_LEFT:
# direction = 0
# elif event.key == K_RIGHT:
# direction = 0
# if(direction == MOVE_LEFT):
# targetx-=10
# elif(direction == MOVE_RIGHT):
# targetx+=10
# for event in pygame.event.get():
# print(event)
# if event.type==QUIT:
# pygame.quit()
# sys.exit()
# if event.type == KEYDOWN:
# if event.key == K_LEFT:
# targetx-=5
# elif event.key == K_RIGHT:
# targetx+=5
# elif event.key == K_UP:
# targety-=5
# elif event.key == K_DOWN:
# targety+=5
# pygame.display.update()
def shoot():
#while True:
shot = False
pos = (targetx, targety)
t = screen.blit(robot, (64,64))
if t.collidepoint(pos):
shot = True
return shot
def generate_robot(x,y):
#while displayrobot == True
robot=pygame.draw.rect(surface, (255,0,0), (x,y,64,64), 0)
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_SPACE:
shoot()
if shot == True:
displayrobot = False
cover = surface.blit(bg, (x,y))
pygame.display.update()
return x, y
#if shot == True:
def die():
message("YOU DIED")
pygame.display.update()
def win(level):
level+=1
def text_objects(text, font):
textSurface = font.render(text, True, black)
return textSurface, textSurface.get_rect()
def message(text):
largeText = pygame.font.Font('freesansbold.ttf',60)
TextSurf, TextRect = text_objects(text, largeText)
TextRect.center = ((surfacew/6),(surfacel/2))
surface.blit(TextSurf, TextRect)
pygame.display.update()
time.sleep(2)
def main(alive):
#displayrobot = True:
robot=0
score=0
surface.fill(black)
surface.blit(bg, (0,0))
message("Level "+ str(level))
mouse = pygame.mouse.get_pos()
target = surface.blit(targetImg, (mouse))
while alive==True:
# robot = enemy(64, 64)
x=random.randint(40,760)
y=random.randint(40,560)
generate_robot(x,y)
pygame.display.update()
robot+=1
time.sleep(8/level)
if robot>50 and robot>score:
alive=False
# if pygame.mouse.get_pressed()==True:
# shoot() #maybe??
if shot==True:
score+=1
robot-=1
if robot==10/(level/2): #if 10- robots on screen then...
die()
if score>25*(level/2):
win()
move_target(targetImg)
main(alive)
pygame.quit()
quit()
。
没有错误消息，但它不会移动。我们已经尝试了很多不同的东西（不包括在内）并查找了很多网站，所以请帮助我们。谢谢
看起来我原来的功能评论仍然是"in force"：你的代码没有移动任何游戏对象。
targetxy = targetImg.get_rect()
targetx = targetxy[0]
targety = targetxy[1]
此时，targetxy 是对游戏对象边界矩形的引用。
targetx 和 targety 是 rect 位置值的副本。
def move_target(targetImg):
pygame.event.clear()
while alive == True:
keys_pressed = pygame.key.get_pressed()
if keys_pressed[pygame.K_LEFT]:
targetx -= 5
...
您已经更改了 x-coordinate 的本地副本。这不会影响 targetImg 的位置。您需要更改对象的属性，例如
targetxy.x -= 5
之后，您需要update游戏画面。
要移动对象，您不仅要更改 x,y 和更新屏幕（将缓冲区发送到显示它的视频卡），还要清理缓冲区，在缓冲区的新位置绘制图像（blit()).
此代码仅显示有效 move_target。我跳过了其余代码。
我保持 target_rect 的位置，即 pygame.Rect。你可以用它来 blit(img,rect) 但以后你也可以用它来检查碰撞 rect.colliderect(other_rect)
import pygame
# --- constants --- (UPPER_CASE_NAMES)
BLACK = (0, 0, 0)
SURFACE_WIDTH = 1054
SURFACE_HEIGHT = 562
# --- functions --- (lower_case_names)
def move_target(target_img, target_rect):
alive = True
clock = pygame.time.Clock()
while alive:
# --- events ---
for event in pygame.event.get():
if event.type == pygame.QUIT:
alive = False
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
alive = False
# --- updates/changes ---
keys_pressed = pygame.key.get_pressed()
if keys_pressed[pygame.K_LEFT]:
target_rect.x -= 5
if keys_pressed[pygame.K_RIGHT]:
target_rect.x += 5
if keys_pressed[pygame.K_UP]:
target_rect.y -= 5
if keys_pressed[pygame.K_DOWN]:
target_rect.y += 5
# --- draws ---
surface.fill(BLACK)
surface.blit(target_img, target_rect)
pygame.display.update()
# the same game's speed on all computers = 60 FPS
clock.tick(60)
# --- main --- (lower_case_names)
pygame.init()
pygame.display.set_caption('Robot Apocalypse')
surface = pygame.display.set_mode((SURFACE_WIDTH, SURFACE_HEIGHT))
target_img = pygame.image.load('target.png')
target_img = pygame.transform.scale(target_img, (40, 40))
target_rect = target_img.get_rect()
move_target(target_img, target_rect)
pygame.quit()
当我们 运行 我们 pygame 的代码时，我们的目标范围图像不会移动，但我们的机器人会生成。我们正在尝试使用我们的箭头键来移动它们，我包含了我们所有的代码。
在我们最新的移动试用代码下注释掉的是我们尝试过的另外两件事。
import pygame, sys
from graphics import *
import time
import random
pygame.init()
level=1
bg = pygame.image.load('bg.png')
bg_width = 800
pygame.display.set_caption('Robot Apocalypse')
surfacew = 1054
surfacel = 562
surface = pygame.display.set_mode((surfacew,surfacel))
black = (0, 0, 0)
score = 0
#player_health = 99
alive=True
targetImg = pygame.image.load('target.png')
targetImg = pygame.transform.scale(targetImg, (40, 40))
targetxy = targetImg.get_rect()
targetx = targetxy[0]
targety = targetxy[1]
def move_target(targetImg):
pygame.event.clear()
while alive == True:
keys_pressed = pygame.key.get_pressed()
if keys_pressed[pygame.K_LEFT]:
targetx -= 5
if keys_pressed[pygame.K_RIGHT]:
targetx += 5
if keys_pressed[pygame.K_UP]:
targety -= 5
if keys_pressed[pygame.K_DOWN]:
targety += 5
pygame.display.update()
# pygame.event.clear()
# for event in pygame.event.get():
# if event.type ==KEYDOWN:
# if event.key == K_LEFT:
# direction = MOVE_LEFT
# elif event.key == K_RIGHT:
# direction = MOVE_RIGHT
# elif event.type == KEYUP:
# if event.key == K_LEFT:
# direction = 0
# elif event.key == K_RIGHT:
# direction = 0
# if(direction == MOVE_LEFT):
# targetx-=10
# elif(direction == MOVE_RIGHT):
# targetx+=10
# for event in pygame.event.get():
# print(event)
# if event.type==QUIT:
# pygame.quit()
# sys.exit()
# if event.type == KEYDOWN:
# if event.key == K_LEFT:
# targetx-=5
# elif event.key == K_RIGHT:
# targetx+=5
# elif event.key == K_UP:
# targety-=5
# elif event.key == K_DOWN:
# targety+=5
# pygame.display.update()
def shoot():
#while True:
shot = False
pos = (targetx, targety)
t = screen.blit(robot, (64,64))
if t.collidepoint(pos):
shot = True
return shot
def generate_robot(x,y):
#while displayrobot == True
robot=pygame.draw.rect(surface, (255,0,0), (x,y,64,64), 0)
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_SPACE:
shoot()
if shot == True:
displayrobot = False
cover = surface.blit(bg, (x,y))
pygame.display.update()
return x, y
#if shot == True:
def die():
message("YOU DIED")
pygame.display.update()
def win(level):
level+=1
def text_objects(text, font):
textSurface = font.render(text, True, black)
return textSurface, textSurface.get_rect()
def message(text):
largeText = pygame.font.Font('freesansbold.ttf',60)
TextSurf, TextRect = text_objects(text, largeText)
TextRect.center = ((surfacew/6),(surfacel/2))
surface.blit(TextSurf, TextRect)
pygame.display.update()
time.sleep(2)
def main(alive):
#displayrobot = True:
robot=0
score=0
surface.fill(black)
surface.blit(bg, (0,0))
message("Level "+ str(level))
mouse = pygame.mouse.get_pos()
target = surface.blit(targetImg, (mouse))
while alive==True:
# robot = enemy(64, 64)
x=random.randint(40,760)
y=random.randint(40,560)
generate_robot(x,y)
pygame.display.update()
robot+=1
time.sleep(8/level)
if robot>50 and robot>score:
alive=False
# if pygame.mouse.get_pressed()==True:
# shoot() #maybe??
if shot==True:
score+=1
robot-=1
if robot==10/(level/2): #if 10- robots on screen then...
die()
if score>25*(level/2):
win()
move_target(targetImg)
main(alive)
pygame.quit()
quit()
。 没有错误消息，但它不会移动。我们已经尝试了很多不同的东西（不包括在内）并查找了很多网站，所以请帮助我们。谢谢
看起来我原来的功能评论仍然是"in force"：你的代码没有移动任何游戏对象。
targetxy = targetImg.get_rect()
targetx = targetxy[0]
targety = targetxy[1]
此时，targetxy 是对游戏对象边界矩形的引用。
targetx 和 targety 是 rect 位置值的副本。
def move_target(targetImg):
pygame.event.clear()
while alive == True:
keys_pressed = pygame.key.get_pressed()
if keys_pressed[pygame.K_LEFT]:
targetx -= 5
...
您已经更改了 x-coordinate 的本地副本。这不会影响 targetImg 的位置。您需要更改对象的属性，例如
targetxy.x -= 5
之后，您需要update游戏画面。
要移动对象，您不仅要更改 x,y 和更新屏幕（将缓冲区发送到显示它的视频卡），还要清理缓冲区，在缓冲区的新位置绘制图像（blit()).
此代码仅显示有效 move_target。我跳过了其余代码。
我保持 target_rect 的位置，即 pygame.Rect。你可以用它来 blit(img,rect) 但以后你也可以用它来检查碰撞 rect.colliderect(other_rect)
import pygame
# --- constants --- (UPPER_CASE_NAMES)
BLACK = (0, 0, 0)
SURFACE_WIDTH = 1054
SURFACE_HEIGHT = 562
# --- functions --- (lower_case_names)
def move_target(target_img, target_rect):
alive = True
clock = pygame.time.Clock()
while alive:
# --- events ---
for event in pygame.event.get():
if event.type == pygame.QUIT:
alive = False
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
alive = False
# --- updates/changes ---
keys_pressed = pygame.key.get_pressed()
if keys_pressed[pygame.K_LEFT]:
target_rect.x -= 5
if keys_pressed[pygame.K_RIGHT]:
target_rect.x += 5
if keys_pressed[pygame.K_UP]:
target_rect.y -= 5
if keys_pressed[pygame.K_DOWN]:
target_rect.y += 5
# --- draws ---
surface.fill(BLACK)
surface.blit(target_img, target_rect)
pygame.display.update()
# the same game's speed on all computers = 60 FPS
clock.tick(60)
# --- main --- (lower_case_names)
pygame.init()
pygame.display.set_caption('Robot Apocalypse')
surface = pygame.display.set_mode((SURFACE_WIDTH, SURFACE_HEIGHT))
target_img = pygame.image.load('target.png')
target_img = pygame.transform.scale(target_img, (40, 40))
target_rect = target_img.get_rect()
move_target(target_img, target_rect)
pygame.quit()