我正在阅读这本名为“为绝对初学者编写更多Python编程”的Python书,在第4章中,您将创建这个炸弹捕捉游戏。我试图修改它,以便你射击炸弹或敌人。
我希望能够使用
绘制子弹pygame.draw.circle()
所以当你点击鼠标右键时它会射击,然后击中敌人,它会增加你的分数。 顺便说一句 - 我已经知道如何添加分数我只需要帮助拍摄形状:) 如果您想查看原始游戏源文件,请转到此处 - http://www.delmarlearning.com/companions/content/1435459806/relatedfiles/index.asp?isbn=1435459806 这是第4章“BombCatcher”
原始源代码 -
# Bomb Catcher Game
# Chapter 4
import sys, random, time, pygame
from pygame.locals import *
def print_text(font, x, y, text, color=(255,255,255)):
imgText = font.render(text, True, color)
screen.blit(imgText, (x,y))
#main program begins
pygame.init()
screen = pygame.display.set_mode((600,500))
pygame.display.set_caption("Bomb Catching Game")
font1 = pygame.font.Font(None, 24)
pygame.mouse.set_visible(False)
white = 255,255,255
red = 220, 50, 50
yellow = 230,230,50
black = 0,0,0
lives = 3
score = 0
clock_start = 0
game_over = True
mouse_x = mouse_y = 0
pos_x = 300
pos_y = 460
bomb_x = random.randint(0,500)
bomb_y = -50
vel_y = 0.7
#repeating loop
while True:
for event in pygame.event.get():
if event.type == QUIT:
sys.exit()
elif event.type == MOUSEMOTION:
mouse_x,mouse_y = event.pos
move_x,move_y = event.rel
elif event.type == MOUSEBUTTONUP:
if game_over:
game_over = False
lives = 3
score = 0
keys = pygame.key.get_pressed()
if keys[K_ESCAPE]:
sys.exit()
screen.fill((0,0,100))
if game_over:
print_text(font1, 100, 200, "<CLICK TO PLAY>")
else:
#move the bomb
bomb_y += vel_y
#has the player missed the bomb?
if bomb_y > 500:
bomb_x = random.randint(0, 500)
bomb_y = -50
lives -= 1
if lives == 0:
game_over = True
#see if player has caught the bomb
elif bomb_y > pos_y:
if bomb_x > pos_x and bomb_x < pos_x + 120:
score += 10
bomb_x = random.randint(0, 500)
bomb_y = -50
#draw the bomb
pygame.draw.circle(screen, black, (bomb_x-4,int(bomb_y)-4), 30, 0)
pygame.draw.circle(screen, yellow, (bomb_x,int(bomb_y)), 30, 0)
#set basket position
pos_x = mouse_x
if pos_x < 0:
pos_x = 0
elif pos_x > 500:
pos_x = 500
#draw basket
pygame.draw.rect(screen, black, (pos_x-4,pos_y-4,120,40), 0)
pygame.draw.rect(screen, red, (pos_x,pos_y,120,40), 0)
#print # of lives
print_text(font1, 0, 0, "LIVES: " + str(lives))
#print score
print_text(font1, 500, 0, "SCORE: " + str(score))
pygame.display.update()
答案 0 :(得分:0)
要检查按钮是否被按下,您应检查event.type : MOUSEBUTTONDOWN
,然后检查人民币。
为了拍摄,你需要某种列表,这样就会有很多子弹。 您可以创建一个简单的Bullet类,它将具有绘制和移动功能。 一个例子:
class Bullet:
def __init__(self,position):
self.x,self.y = position
def move(self):
self.position += 5
def draw(self,screen):
pygame.draw.circle(screen, black, x, y, 30, 0)
这包括绘图和子弹的移动。除此之外,您应该检查子弹是否不会离开屏幕,如果有,请将其从列表中删除。
碰撞可以通过多种方式完成。 Pygame有一个名为collide_rect的内置方法,用于检查2个矩形是否重叠。但由于你有2个圆圈,方法有点不同。
由于您有2个圆圈,因此它们之间有距离。它由这个等式给出:
D = sqrt((xa-xb)^ 2 +(ya-yb)^ 2))
如果距离小于R1 + R2
,则圆圈重叠。然后你可以继续移除子弹以及炸弹。
我们可以将其简化为:
(R1 + R2)^ 2> (XA-XB)^ 2 +(YA-YB)^ 2)