嘿，伙计们是pygame的新手。我开发了一个简单的游戏，其中球相互反弹。它运作良好。
我添加了一个带有按钮的ui，其中包含new game，loadgame，options等选项。
我需要的是当用户点击new game button时，他必须看到球弹跳。我的代码是
import pygame
import math
from itertools import cycle
def magnitude(v):
return math.sqrt(sum(v[i]*v[i] for i in range(len(v))))
def add(u, v):
return [ u[i]+v[i] for i in range(len(u)) ]
def sub(u, v):
return [ u[i]-v[i] for i in range(len(u)) ]
def dot(u, v):
return sum(u[i]*v[i] for i in range(len(u)))
def normalize(v):
vmag = magnitude(v)
return [ v[i]/vmag for i in range(len(v)) ]
screen = pygame.display.set_mode((300, 300))
clock = pygame.time.Clock()
class Ball(object):
def __init__(self, path):
self.x, self.y = (0, 0)
self.img = pygame.image.load('ball.jpg')
self.speed = 2.5
self.color = (200, 200, 200)
self.path = cycle(path)
self.set_target(next(self.path))
self.sound = pygame.mixer.music.load('yeah.mp3')
@property
def pos(self):
return self.x, self.y
# for drawing, we need the position as tuple of ints
# so lets create a helper property
@property
def int_pos(self):
return map(int, self.pos)
@property
def target(self):
return self.t_x, self.t_y
@property
def int_target(self):
return map(int, self.target)
def next_target(self):
self.set_target(self.pos)
self.set_target(next(self.path))
def set_target(self, pos):
self.t_x, self.t_y = pos
def update(self):
# if we won't move, don't calculate new vectors
if self.int_pos == self.int_target:
return self.next_target()
target_vector = sub(self.target, self.pos)
# a threshold to stop moving if the distance is to small.
# it prevents a 'flickering' between two points
if magnitude(target_vector) < 2:
return self.next_target()
# apply the balls's speed to the vector
move_vector = [c * self.speed for c in normalize(target_vector)]
# update position
self.x, self.y = add(self.pos, move_vector)
def draw(self):
screen.blit(self.img, self.int_pos)
pygame.mixer.music.play()
class Option:
hovered = False
def __init__(self, text, pos):
self.text = text
self.pos = pos
self.set_rect()
self.draw()
def draw(self):
self.set_rend()
screen.blit(self.rend, self.rect)
def set_rend(self):
self.rend = menu_font.render(self.text, True, self.get_color())
def get_color(self):
if self.hovered:
return (255, 255, 255)
else:
return (100, 100, 100)
def set_rect(self):
self.set_rend()
self.rect = self.rend.get_rect()
self.rect.topleft = self.pos
pygame.init()
quit = False
path = [(26, 43),(105, 110),(45, 225),(145, 295),(266, 211),(178, 134),(250,5)(147,12)]
path2 = [(26, 43),(105, 10),(45, 125),(150, 134),(150, 26),(107, 12)]
ball = Ball(path)
ball.speed = 1.9
ball2 = Ball(path2)
ball2.color = (200, 200, 0)
balls = [ball, ball2]
screen = pygame.display.set_mode((480, 320))
menu_font = pygame.font.Font(None, 40)
options = [Option("NEW GAME", (140, 105)), Option("LOAD GAME", (135, 155)),
Option("OPTIONS", (145, 205))]
while not quit:
pygame.event.pump()
screen.fill((0, 0, 0))
for option in options:
if option.rect.collidepoint(pygame.mouse.get_pos()):
option.hovered = True
else:
option.hovered = False
option.draw()
pygame.display.update()
quit = pygame.event.get(pygame.QUIT)
pygame.event.poll()
map(Ball.update, balls)
screen.fill((0, 0, 0))
map(Ball.draw, balls)
pygame.display.flip()
clock.tick(60)
当我尝试这个代码时，球反弹并且起始ui工作正常，但是当我点击新按钮图标时它没有显示任何内容。
我需要的是当用户点击new game按钮时，它必须重定向到球弹跳屏幕。
我已经尝试过pygame.mouse.get_pressed，但它并没有帮助我。
希望你们能帮帮我。
提前完成
答案 0 :(得分：0)
所以你的问题是，首先你总是画球，然后你不检查鼠标点击。一个简单的方法是检查pygame.event.get([pygame.MOUSEBUTTONDOWN])，检查鼠标位置是否超过其中一个选项。如果它返回的内容不是None，则停止显示选项并开始显示球。
所以你会做那样的事情： 导入pygame 导入数学 来自itertools导入周期
OPTIONS = 0
BALLS = 1
def magnitude(v):
return math.sqrt(sum(v[i]*v[i] for i in range(len(v))))
def add(u, v):
return [ u[i]+v[i] for i in range(len(u)) ]
def sub(u, v):
return [ u[i]-v[i] for i in range(len(u)) ]
def dot(u, v):
return sum(u[i]*v[i] for i in range(len(u)))
def normalize(v):
vmag = magnitude(v)
return [ v[i]/vmag for i in range(len(v)) ]
screen = pygame.display.set_mode((300, 300))
clock = pygame.time.Clock()
class Ball(object):
def __init__(self, path):
self.x, self.y = (0, 0)
self.img = pygame.image.load('/home/wastl/Documents/DSC_0051.JPG')
self.speed = 2.5
self.color = (200, 200, 200)
self.path = cycle(path)
self.set_target(next(self.path))
#self.sound = pygame.mixer.music.load('yeah.mp3')
@property
def pos(self):
return self.x, self.y
# for drawing, we need the position as tuple of ints
# so lets create a helper property
@property
def int_pos(self):
return map(int, self.pos)
@property
def target(self):
return self.t_x, self.t_y
@property
def int_target(self):
return map(int, self.target)
def next_target(self):
self.set_target(self.pos)
self.set_target(next(self.path))
def set_target(self, pos):
self.t_x, self.t_y = pos
def update(self):
# if we won't move, don't calculate new vectors
if self.int_pos == self.int_target:
return self.next_target()
target_vector = sub(self.target, self.pos)
# a threshold to stop moving if the distance is to small.
# it prevents a 'flickering' between two points
if magnitude(target_vector) < 2:
return self.next_target()
# apply the balls's speed to the vector
move_vector = [c * self.speed for c in normalize(target_vector)]
# update position
self.x, self.y = add(self.pos, move_vector)
def draw(self):
screen.blit(self.img, self.int_pos)
#pygame.mixer.music.play()
class Option:
def __init__(self, text, pos):
self.hovered = False
self.text = text
self.pos = pos
self.set_rect()
self.draw()
def draw(self):
self.set_rend()
screen.blit(self.rend, self.rect)
def set_rend(self):
self.rend = menu_font.render(self.text, True, self.get_color())
def get_color(self):
if self.hovered:
return (255, 255, 255)
else:
return (100, 100, 100)
def set_rect(self):
self.set_rend()
self.rect = self.rend.get_rect()
self.rect.topleft = self.pos
pygame.init()
quit = False
path = [(26, 43),(105, 110),(45, 225),(145, 295),(266, 211),(178, 134),(250,5),(147,12)]
path2 = [(26, 43),(105, 10),(45, 125),(150, 134),(150, 26),(107, 12)]
ball = Ball(path)
ball.speed = 1.9
ball2 = Ball(path2)
ball2.color = (200, 200, 0)
balls = [ball, ball2]
screen = pygame.display.set_mode((480, 320))
menu_font = pygame.font.Font(None, 40)
options = [Option("NEW GAME", (140, 105)), Option("LOAD GAME", (135, 155)),
Option("OPTIONS", (145, 205))]
STATE = OPTIONS
while not quit:
pygame.event.pump()
screen.fill((0, 0, 0))
if STATE == OPTIONS:
for option in options:
if option.rect.collidepoint(pygame.mouse.get_pos()):
option.hovered = True
if pygame.event.get([pygame.MOUSEBUTTONDOWN]) and option.text == "NEW GAME":
STATE = BALLS
else:
option.hovered = False
option.draw()
pygame.display.update()
elif STATE == BALLS:
map(Ball.update, balls)
screen.fill((0, 0, 0))
map(Ball.draw, balls)
pygame.display.flip()
quit = pygame.event.get(pygame.QUIT)
pygame.event.poll()
clock.tick(60)