问题描述
对于我的程序，我正在制作一个涉及多项选择题的游戏。除此之外，我还使用了三个独立的心脏图像来向用户展示生活。
在代码中，我设置了条件，例如，如果生命值为 1，则屏幕上只有一个心脏图像。只有当用户选择的答案不正确时，生命数量才会减少。
class GameState:
def __init__(self,difficulty):
self.difficulty = difficulty
self.questions = [
("Q1: 4 _ 6 = 10?"),("Q2: ___ = 1"),("Q3: 1 * 3?")
]
self.answers = [4,2,2]
self.current_question = None
self.question_index = 0
def pop_question(self):
q = self.questions[0]
self.questions.remove(q)
self.current_question = q
self.question_index += 1
return q
def answer(self,answer):
lives = 3
if self.answers == self.current_question[1]:
lives = lives - 1
else:
lives = lives
if lives == 1:
screen.blit(Heart,(500,10))
if lives == 2:
screen.blit(Heart,10))
screen.blit(Heart,(X // 2,10))
if lives == 3:
screen.blit(Heart,10))
screen.blit(Heart1,10))
screen.blit(Heart2,(775,10))
class GameScene:
def __init__(self):
if SimpleScene.FONT == None:
SimpleScene.FONT = pygame.freetype.SysFont(None,32)
self.rects = []
for n in range(4):
rect = pygame.Rect(420,(n * 70) + 300,500,50)
self.rects.append(rect)
self.choices = [['x','-','*','+'],["number","fruit","weather","letter"],["4","3","-2","13"]]
def start(self,gamestate):
self.background = pygame.Surface((X,Y))
self.background.fill(pygame.Color("white"))
self.gamestate = gamestate
question = gamestate.pop_question()
SimpleScene.FONT.render_to(self.background,(20,150),question,(blue))
def draw(self,screen):
screen.blit(self.background,(0,0))
n = 0
for rect in self.rects:
if rect.collidepoint(pygame.mouse.get_pos()):
pygame.draw.rect(screen,pygame.Color('darkgrey'),rect)
pygame.draw.rect(screen,rect,5)
screen.blit(Heart,10))
screen.blit(Heart1,10))
screen.blit(Heart2,10))
for i in range(len(self.choices)):
if self.gamestate.question_index == i + 1:
SimpleScene.FONT.render_to(screen,(rect.x + 30,rect. y + 20),str(self.choices[i][n]),(green))
SimpleScene.FONT.render_to(screen,(rect.x + 29,rect.y + 19),str(self.choices [i][n]),(green))
n += 1
def update(self,events,dt):
for event in events:
if event.type == pygame.MOUSEBUTTONDOWN:
n = 1
for rect in self.rects:
if rect.collidepoint(event.pos):
self.gamestate.answer(n)
if self.gamestate.questions:
return ('GAME',self.gamestate)
else:
quit()
n += 1
当我运行程序时，没有一颗心消失。如果答案错误，是不是因为我在将生命条件设置为减一时犯了错误？
解决方法
lives 需要是 GameState 的一个属性：
class GameState:
def __init__(self,difficulty):
# [...]
self.lives = 3
# [...]
def pop_question(self):
q = self.questions[0]
self.current_question = q
return q
def answer(self,answer):
if answer != self.answers[self.question_index]:
self.lives -= 1
else:
self.question_index += 1
self.questions.pop(0)
但是，您必须在 GameScene.draw 中绘制心形，具体取决于 self.gamestate.lives 的值：
class GameScene:
# [...]
def draw(self,screen):
screen.blit(self.background,(0,0))
if self.gamestate.lives >= 1:
screen.blit(Heart,(500,10))
if self.gamestate.lives >= 2:
screen.blit(Heart1,(X // 2,10))
if self.gamestate.lives >= 3:
screen.blit(Heart2,(775,10))
n = 0
for rect in self.rects:
if rect.collidepoint(pygame.mouse.get_pos()):
pygame.draw.rect(screen,pygame.Color('darkgrey'),rect)
pygame.draw.rect(screen,rect,5)
for i in range(len(self.choices)):
if self.gamestate.question_index == i:
SimpleScene.FONT.render_to(screen,(rect.x + 30,rect. y + 20),str(self.choices[i][n]),(green))
SimpleScene.FONT.render_to(screen,(rect.x + 29,rect.y + 19),str(self.choices [i][n]),(green))
n += 1
结束游戏
def main():
# [...]
while True:
# [...]
game = scene.update(events,dt)
if game:
next_scene,state = game
if next_scene:
scene = scenes[next_scene]
scene.start(state)
if state and state.lives == 0:
print("GAME OVER")
break