【发布时间】：2013-10-23 06:44:24
【问题描述】：
好吧，我和其他 5 个家伙整晚都在为我们的 pygame 模块开发一个项目。我们的讲师没有给我们任何可供参考的程序，他只是向我们扔了一堆代码（没有评论）并且期待我们理解它。我们从 9 月初才开始使用 python。我们真的需要一些帮助。
所以我们有一个由 W A S & D 控制的人类玩家和 15 个在屏幕上移动的随机点。我们需要使用向量（我们从未使用过）来射击随机点。
请人帮忙。
添加编辑代码~
import pygame
class Terminator(pygame.sprite.Sprite):
def __init__(self, screen):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.Surface((20, 20))
self.image.fill((0, 0, 0))
pygame.draw.circle(self.image, (255, 0, 0), (10, 10), 10, 0)
self.rect = self.image.get_rect()
self.dx = screen.get_width()/2
self.dy = screen.get_height()/2
self.rect.center = (self.dx, self.dy)
self.speed = 5
self.screen = screen
def update(self):
self.rect.center = (self.dx, self.dy)
def MoveLeft(self):
if self.rect.left < 0:
self.dx += 0
else:
self.dx -= self.speed
def MoveRight(self):
if self.rect.right > self.screen.get_width():
self.dx += 0
else:
self.dx += self.speed
def MoveUp(self):
if self.rect.top <0:
self.dy += 0
else:
self.dy -= self.speed
def MoveDown(self):
if self.rect.bottom > self.screen.get_height():
self.dy += 0
else:
self.dy += self.speed
<code>
humansprite.py
<pre>
import pygame
import random
import math
class Humans(pygame.sprite.Sprite):
def __init__(self, screen):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.Surface((16, 16))
self.image.fill((0, 0, 0))
pygame.draw.circle(self.image, (0, 0, 255), (8, 8), 8, 0)
self.rect = self.image.get_rect()
self.dx = random.randrange(0, screen.get_height())
self.dy = random.randrange(0, screen.get_width())
self.screen = screen
self.speed = 1
self.alive = True
def update(self):
self.rect.centerx -= self.dx
self.rect.centery -= self.dy
if self.rect.right < 0:
self.reset()
def reset(self):
self.rect.left = self.screen.get_width()
self.rect.centery = random.randrange(0, self.screen.get_height())
self.dy = random.randrange(-2, 2)
self.dx = random.randrange(1, 4)
<code>
seekandDestory.py
<pre>
import pygame
from TerminatorSprite import Terminator
from humansSprite import Humans
pygame.init()
def checkKeys(myData):
(event, ship) = myData
if event.key == pygame.K_LEFT:
print 'LEFT'
ship.MoveLeft()
if event.key == pygame.K_RIGHT:
print 'RIGHT'
ship.MoveRight()
if event.key == pygame.K_UP:
print 'UP'
ship.MoveUp()
if event.key == pygame.K_DOWN:
print 'DOWN'
ship.MoveDown()
def main():
screen = pygame.display.set_mode((640, 480))
pygame.display.set_caption("Seek and Destroy")
background = pygame.Surface(screen.get_size())
clock = pygame.time.Clock()
screen.blit(background, (0, 0))
terminator = Terminator(screen)
humans = []
for people in range(15):
people = Humans(screen)
humans.append(people)
terminatorGroup = pygame.sprite.Group(terminator)
humanGroup = pygame.sprite.Group(humans)
clock = pygame.time.Clock()
keepGoing = True
pygame.key.set_repeat(10, 10)
while keepGoing:
clock.tick(60)
pygame.mouse.set_visible(False)
for event in pygame.event.get():
if event.type == pygame.QUIT:
keepGoing = False
if event.type == pygame.KEYDOWN:
myData = (event, terminator)
checkKeys(myData)
#if pygame.sprite.spritecollide(terminator, humanGroup, False):
terminatorGroup.clear(screen, background)
terminatorGroup.update()
terminatorGroup.draw(screen)
humanGroup.clear(screen, background)
humanGroup.update()
humanGroup.draw(screen)
pygame.display.flip()
pygame.mouse.set_visible(True)
if __name__ == "__main__":
main()
<code>
【问题讨论】：
-
Here's an example 演示了如何使用 pygame 向量来移动精灵。