我的代码存在问题，程序无法重新播放，但是 也不会结束。
在获胜或过多猜测之后，代码继续在内部while循环中循环。
这是我的代码：
/**
* This program will prompt the user to guess a secret number
* This number will is between 1 and N, where N is a postive number
*
* @author: Perry Chapman
*/
import java.util.Scanner;
public class SecretNumber2
{
public static void main( String [] args )
{
int N;
int randomNumber;
int guess;
int tries, maxTries;
boolean win = false;
boolean playing = true;
int playAgain = 1;
tries = 0;
while(playing == true)
{
Scanner input = new Scanner( System.in );
System.out.println( "This is a guessing game." );
System.out.println( "What is the max number of tries: ");
maxTries = input.nextInt();
System.out.println( "Enter a value between 1 and 1000: " );
N = input.nextInt();
randomNumber = (int)(N * Math.random()) + 1;
while (win == false)
{
System.out.println( "Enter your guess: " );
guess = input.nextInt();
tries++;
if (guess == randomNumber)
{
System.out.println( "Congratulations! The number of guesses it took you was " + tries );
win = true;
System.out.println("Would you like to play again? \n (1)Yes or (2)No: ");
playAgain = input.nextInt();
if(playAgain == 1) {
playing = true;
}
else if (playAgain == 2) {
playing = false;
}
tries = 0;
}
else if(guess < randomNumber)
System.out.println( "Too low, guess again." );
else if(guess > randomNumber)
System.out.println( "Too high, guess again." );
else if(tries == maxTries)
{
System.out.println("You have exceeded the max number of tries. \nYou lose.");
System.out.println("\nWould you like to play again?\n (1)Yes or (2)No: ");
playAgain = input.nextInt();
if(playAgain == 1) {
playing = true;
}
else if(playAgain == 2) {
playing = false;
}
tries = 0;
}
}
}
}
}
答案 0 :(得分：1)
Andrew是对的，为了循环条件需要为true。如果else语句需要按正确的顺序排列。这是一个修复，我希望它会有所帮助。
public static void main(String[] args) {
int N;
int randomNumber;
int guess;
int tries, maxTries;
boolean lose;
boolean playing = true;
int playAgain;
tries = 0;
while (playing) {
Scanner input = new Scanner(System.in);
System.out.println("This is a guessing game.");
System.out.println("What is the max number of tries: ");
maxTries = input.nextInt();
System.out.println("Enter a value between 1 and 1000: ");
N = input.nextInt();
randomNumber = (int) (N * Math.random()) + 1;
lose = true;
while (lose) {
System.out.println("Enter your guess: ");
guess = input.nextInt();
tries++;
if (guess == randomNumber) {
System.out.println("Congratulations! The number of guesses it took you was " + tries);
lose = false;
System.out.println("Would you like to play again? \n (1)Yes or (2)No: ");
playAgain = input.nextInt();
if (playAgain == 1) {
playing = true;
} else if (playAgain == 2) {
playing = false;
}
tries = 0;
} else if (tries == maxTries) {
System.out.println("You have exceeded the max number of tries. \nYou lose.");
System.out.println("\nWould you like to play again?\n (1)Yes or (2)No: ");
playAgain = input.nextInt();
if (playAgain == 1) {
playing = true;
} else if (playAgain == 2) {
playing = false;
}
lose = false;
tries = 0;
} else if (guess < randomNumber) {
System.out.println("Too low, guess again.");
} else if (guess > randomNumber) {
System.out.println("Too high, guess again.");
}
}
}
}
答案 1 :(得分：0)
我认为你有两个问题。
首先是在成功猜出你从未设定的号码后，胜利回到假。所以你不会再次进入内部while循环。
第二个是if / else if语句的排序，从来没有一个猜测可以到达最终的if的情况。在前三个ifs之一中，每种情况都将验证为真。
答案 2 :(得分：0)
import pygame
import random
from os import path
img_dir = path.join(path.dirname(__file__), 'img')
snd_dir = path.join(path.dirname(__file__), 'sound')
WIDTH = 800
HEIGHT = 600
FPS = 50
WHITE=(255, 255, 255)
BLACK=(0, 0, 0)
RED=(255, 0, 0)
GREEN=(0, 255, 0)
BLUE=(0, 0, 255)
YELLOW=(255, 255, 0)
pygame.init()
pygame.mixer.init()
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("My Game")
clock = pygame.time.Clock()
font_name = pygame.font.match_font('arial')
end = True
def start_screen():
draw_text(screen, "SPACE SHOOTING", 70, WIDTH/2, HEIGHT/4)
draw_text(screen, "INSTRUCTIONS", 25, WIDTH/2, HEIGHT/2)
draw_text(screen, "Press Left arrow key to move left", 20, WIDTH/2, HEIGHT*2/3.5)
draw_text(screen, "Press Right arrow key to move right", 20, WIDTH/2, HEIGHT*2/3.3)
draw_text(screen, "Spacebar to shoot", 20, WIDTH/2, HEIGHT*2/3.1)
draw_text(screen, "Press a key to begin", 20, WIDTH/2, HEIGHT*3/4)
pygame.display.flip()
wait = True
while wait:
clock.tick(FPS)
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
if event.type == pygame.KEYUP:
if event.key == pygame.K_SPACE:
wait = False
def draw_text(surf, text, size, x, y):
font = pygame.font.Font(font_name, size)
text_surface = font.render(text, True, WHITE)
text_rect = text_surface.get_rect()
text_rect.midtop = (x, y)
surf.blit(text_surface, text_rect)
class Player(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.transform.scale(player_img, (50, 38))
self.image.set_colorkey(BLACK)
self.rect = self.image.get_rect()
self.radius = 20
self.rect.centerx = WIDTH/2
self.rect.bottom = HEIGHT - 10
self.speedx = 0
def update(self):
self.speedx = 0
keystate = pygame.key.get_pressed()
if keystate[pygame.K_LEFT]:
self.speedx = -5
if keystate[pygame.K_RIGHT]:
self.speedx = 5
self.rect.x += self.speedx
if self.rect.right > WIDTH:
self.rect.right = WIDTH
if self.rect.left < 0:
self.rect.left = 0
def shoot(self):
bullet = Bullets(self.rect.centerx, self.rect.top)
all_sprites.add(bullet)
bullets.add(bullet)
class Aliens(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image = aliens_img
self.image.set_colorkey(BLACK)
self.rect = self.image.get_rect()
self.radius = int(self.rect.width*.85/2)
self.rect.x = random.randrange(WIDTH - self.rect.width)
self.rect.y = random.randrange(-100, -40)
self.speedy = random.randrange(1, 8)
def update(self):
self.rect.y += self.speedy
if self.rect.top > HEIGHT + 10 or self.rect.left < -25 or self.rect.right > WIDTH + 20:
self.rect.x = random.randrange(WIDTH - self.rect.width)
self.rect.y = random.randrange(-100, -40)
self.speedy = random.randrange(1, 8)
class SuperAliens(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image = superaliens_img
self.image.set_colorkey(BLACK)
self.rect = self.image.get_rect()
self.radius = int(self.rect.width*.85/2)
self.rect.x = random.randrange(WIDTH - self.rect.width)
self.rect.y = random.randrange(-100, -40)
self.speedy = random.randrange(1, 8)
self.speedx = random.randrange(-3, 3)
def update(self):
self.rect.x += self.speedx
self.rect.y += self.speedy
if self.rect.top > HEIGHT + 10 or self.rect.left < -25 or self.rect.right > WIDTH + 20:
self.rect.x = random.randrange(WIDTH - self.rect.width)
self.rect.y = random.randrange(-100, -40)
self.speedy = random.randrange(1, 8)
def shoot1(self):
sbullet = SBullets(self.rect.centerx, self.rect.bottom)
all_sprites.add(sbullet)
bullets.add(sbullet)
class SBullets(pygame.sprite.Sprite):
def __init__(self, x, y):
pygame.sprite.Sprite.__init__(self)
self.image = sbullet_img
self.image.set_colorkey(BLACK)
self.rect = self.image.get_rect()
self.rect.bottom = y
self.rect.centerx = x
self.speedy = +10
def update(self):
self.rect.y += self.speedy
if self.rect.top < 0:
self.kill()
class Bullets(pygame.sprite.Sprite):
def __init__(self, x, y):
pygame.sprite.Sprite.__init__(self)
self.image = bullet_img
self.image.set_colorkey(BLACK)
self.rect = self.image.get_rect()
self.rect.bottom = y
self.rect.centerx = x
self.speedy = -10
def update(self):
self.rect.y += self.speedy
if self.rect.bottom < 0:
self.kill()
class Explode(pygame.sprite.Sprite):
def __init__(self, center, size):
pygame.sprite.Sprite.__init__(self)
self.size = size
self.image = explode[self.size][0]
self.rect = self.image.get_rect()
self.rect.center = center
self.frame = 0
self.last_update = pygame.time.get_ticks()
self.frame_rate = 2
def update(self):
now = pygame.time.get_ticks()
if now - self.last_update > self.frame_rate:
self.last_update = now
self.frame += 1
if self.frame == len(explode[self.size]):
self.kill()
else:
center = self.rect.center
self.image = explode[self.size][self.frame]
self.rect = self.image.get_rect()
self.rect.center = center
background = pygame.image.load(path.join(img_dir, "back.png")).convert()
background_rect = background.get_rect()
player_img = pygame.image.load(path.join(img_dir, "playerShip2_blue.png")).convert()
superaliens_img = pygame.image.load(path.join(img_dir, "enemyBlack4.png")).convert()
aliens_img = pygame.image.load(path.join(img_dir, "enemyBlack1.png")).convert()
bullet_img = pygame.image.load(path.join(img_dir, "laserRed16.png")).convert()
sbullet_img = pygame.image.load(path.join(img_dir, "laserRed11.png")).convert()
explode = {}
explode['super']=[]
explode['small']=[]
for i in range(9):
filename = 'regularExplosion02.png'.format(1)
img = pygame.image.load(path.join(img_dir, filename)).convert()
img.set_colorkey(BLACK)
img_super = pygame.transform.scale(img, (75, 75))
explode ['super'].append(img_super)
img_small = pygame.transform.scale(img, (32, 32))
explode ['small'].append(img_small)
#pygame.mixer.music.load(path.join(snd_dir, 'Orbital.mp3'))
#pygame.mixer.music.set_volume(0.4)
#pygame.mixer.music.play(loops=-1)
end_game = True
running = True
while running:
if end_game:
start_screen()
end_game = False
all_sprites = pygame.sprite.Group()
aliens = pygame.sprite.Group()
superaliens = pygame.sprite.Group()
bullets = pygame.sprite.Group()
sbullets = pygame.sprite.Group()
player = Player()
all_sprites.add(player)
for i in range(5):
m = Aliens()
all_sprites.add(m)
aliens.add(m)
for j in range(1):
n = SuperAliens()
all_sprites.add(n)
superaliens.add(n)
score = 0
clock.tick(FPS)
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_SPACE:
player.shoot()
all_sprites.update()
hits = pygame.sprite.groupcollide(aliens, bullets, True, True)
for hit in hits:
score += 1
m = Aliens()
expl = Explode(hit.rect.center, 'small')
all_sprites.add(expl)
all_sprites.add(m)
aliens.add(m)
hits = pygame.sprite.groupcollide(superaliens, bullets, True, True)
for hitt in hits:
score += 5
n = SuperAliens()
expl1 = Explode(hitt.rect.center, 'super')
all_sprites.add(expl1)
all_sprites.add(n)
superaliens.add(n)
hits = pygame.sprite.spritecollide(player, aliens, True)
for hit in hits:
expl = Explode(hit.rect.center, 'small')
all_sprites.add(expl)
if hits:
end_game = True
hits = pygame.sprite.spritecollide(player, superaliens, True)
for hitt in hits:
expl1 = Explode(hitt.rect.center, 'super')
all_sprites.add(expl1)
if hits:
end_game = True
screen.fill(BLACK)
screen.blit(background, background_rect)
all_sprites.draw(screen)
draw_text(screen,"SCORE" +str(score), 22, WIDTH/2, 10)
#after drwing everything flip the display
pygame.display.flip()
pygame.quit()
发现了这个问题，我想我会发布答案，万一其他人可能会偶然发现这个帖子！谢谢你的帮助！