我最近问了一个关于Akka PoisonPill的问题，我收到的excellent answer提到了Akka“ actor pattern ”，称为“一次性演员”。
基本上，根据该用户的说法，一次性演员是一旦不再需要就被杀死（通过import pygame as pg
import numpy as np
from pygame.locals import *
from random import *
#Make a first "game" which is actually the menu
res = (1000,800)
screen = pg.display.set_mode(res)
pg.display.set_caption('Rocket game')
black = (0,0,0)
white = (255,255,255)
backgroundmenu = pg.image.load("menuscreen.jpg")
pg.init()
running1 = True
while running1:
pg.event.pump()
keys = pg.key.get_pressed()
if keys[pg.K_1]:
running1 = False
running2 = True
elif keys[pg.K_2]:
running1 = False
running2 = False
for event in pg.event.get():
if event.type == pg.QUIT:
running1 = False
screen.blit(backgroundmenu,(0,0))
pg.display.flip()
pg.quit()
pg.init()
#Setup screen and define colors
res = (1000,800)
screen = pg.display.set_mode(res)
pg.display.set_caption('Rocket game')
#pg.image.load("space.jpg")
black = (0,0,0)
white = (255,255,255)
background1 = pg.image.load("space.jpg").convert()
background2 = pg.image.load("space.jpg").convert()
background3 = pg.image.load("space.jpg").convert()
#screen.blit(background1,(0,0))
x_back = 0
screenwidth = 1000
#Initialize variables and clock
vx = 0
vy = 0
x = 200
y = 600
t0 = 0.001*pg.time.get_ticks()
maxdt = 0.5
#Load rocket and asteroids
rocketgif = pg.image.load("rocket.gif")
rocketimg = pg.transform.scale(rocketgif, (100,100))
asteroidgif = pg.image.load("Asteroid.gif")
asteroidimg = pg.transform.scale(asteroidgif, (75,75))
#Load music
pg.mixer.music.load('gamesound.mp3')
pg.mixer.music.set_endevent(pg.constants.USEREVENT)
pg.mixer.music.play()
#clock = pg.time.Clock()
#Generate random asteroids
Nasteroid = 5
x_ast = 999
dx = 5
i = 0
asteroidpos_y= []
while i<Nasteroid:
y = randint(0,800)
asteroidpos_y.append(y)
i = i + 1
#Start game loop
running2 = True
while running2:
t = 0.001*pg.time.get_ticks()
dt = min(t-t0,maxdt)
i = 0
pg.event.pump()
while i<Nasteroid:
x_ast -= dx
y = y
screen.blit(asteroidimg,(x_ast,asteroidpos_y[i-1]))
i = i + 1
for event in pg.event.get():
if event.type == pg.QUIT: #Quit using red cross button
running2 = False
elif event.type == pg.KEYDOWN and event.key == pg.K_ESCAPE:
running2 = False #Quit using key combination
elif event.type == pg.KEYDOWN: #Make user control rocket movement
#and stop if key is released.
if event.key == pg.K_LEFT:
vx = -8
elif event.key == pg.K_RIGHT:
vx = 8
elif event.key == pg.K_UP:
vy = -8
elif event.key == pg.K_DOWN:
vy = 8
elif event.type == pg.KEYUP:
if event.key == pg.K_LEFT:
vx = 0
elif event.key == pg.K_RIGHT:
vx = 0
elif event.key == pg.K_UP:
vy = 0
elif event.key == pg.K_DOWN:
vy = 0
elif event.type == pg.constants.USEREVENT:
pg.mixer.music.load("gamesound.mp3")
pg.mixer.music.play()
#Make the screen scroll behind the rocket to make it "move" (3x the same background behind eachother)
screen.blit(background1,(x_back,0))
screen.blit(background2,(x_back - screenwidth,0))
screen.blit(background3,(x_back - (2*screenwidth),0))
x_back = x_back - 1
if x_back == screenwidth:
x_back = 0
#Update the position of the rocket. If the rocket hits the edges the game stops.
x = x + vx
y = y + vy
"""if x <= 0 or x >=100:
running2 = False
if y <= 0 or y >=800:
running2 = False"""
pg.event.pump()
screen.blit(rocketimg,(x,y))
pg.display.flip()
pg.quit()
），因此将资源释放回演员系统。
我用Google搜索了“Akka演员模式”，“Akka一次性演员”等等，并没有发现任何已知演员模式集合的迹象。
所以我问：这个“一次性演员模式”是本土的东西，还是实际上有一套已知的Akka演员模式？如果是后者，他们在哪里记录？
答案 0 :(得分：1)
有一些很棒的书可以解释一些有用的模式，例如Akka Concurrency或Effective Akka以及Akka in Action（以及其他）。我们目前还在编写反应式设计模式，这也非常适用于演员。
答案 1 :(得分：0)
Derek Wyatt 在 Let it crash 上撰写了一篇关于“Akka 2中的关机模式”的精彩博客文章，他还描述了inside main
0
0
模式 1 。
1 模式不在{{3>}中设计模式：可重用面向对象软件的元素中的严格定义中。