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[英]python pygame different ways to blit sprite.Group() on the sceen
[英]Python/Pygame - Sprite fails to blit
我的播放器精靈無法啟動。 但是,當我取消對Rectangle代碼的注釋並注釋Sprite代碼時,它會完全消失。
加載圖像時我沒有收到錯誤消息,精靈根本不顯示。 控件也表現得有些呆板,除非它與牆壁碰撞並且跳躍無法正常工作,否則它似乎在空中“漂浮”。 我知道它可以找到圖像,因為直接blit
可以工作。
每當我取消對Rect代碼的注釋並對load_image()代碼進行注釋時,控件就可以正常運行。
我已經嘗試過直接對圖片進行帳單處理,而不是for e in entities
具有指定坐標的for e in entities
循環中使用for e in entities
。 它起作用了,但是當使用特定的x
和y
值時,圖像顯然停留在同一位置,因此停留在屏幕上的坐標上,而不顯示玩家的動作。 每當我運行screen.blit(player.image, camera.apply(player))
它根本不會顯示。
我已經省略了代碼中的某些內容(級別數組,其他類等),但我相信這里是必須的。 如果這個解決方法非常簡單,那么,我會覺得很愚蠢:/
class Entity(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
class Player(Entity):
def __init__(self, x, y):
Entity.__init__(self)
self.xlevel = 0
self.ylevel = 0
self.onGround = False
# self.image = Surface((32, 32))
# self.image.fill(Color("#000000"))
# self.image.convert()
# self.rect = Rect(x, y, 32, 32)
self.image, self.rect = load_image("zur.png", colorkey=((255, 255, 255)))
class Camera(object):
def __init__(self, camera_func, width, height):
self.camera_func = camera_func
self.state = Rect(0, 0, width, height)
def apply(self, target):
return target.rect.move(self.state.topleft)
def update(self, target):
self.state = self.camera_func(self.state, target.rect)
def simple_camera(camera, target_rect):
l, t, _, _ = target_rect
_, _, w, h = camera
return Rect(-l + HALF_WIDTH, -t + HALF_HEIGHT, w, h)
def complex_camera(camera, target_rect):
l, t, _, _ = target_rect
_, _, w, h = camera
l, t, _, _ = -l+HALF_WIDTH, -t+HALF_HEIGHT, w, h # center player
l = min(0, l) # stop scrolling at the left edge
l = max(-(camera.width-WIN_WIDTH), l) # stop scrolling at the right edge
t = max(-(camera.height-WIN_HEIGHT), t) # stop scrolling at the bottom
t = min(0, t) # stop scrolling at the top
return Rect(l, t, w, h)
def load_image(name, colorkey=None):
fullname = os.path.join('assets', name)
try:
image = pygame.image.load(fullname)
except pygame.error, message:
print 'Cannot load image ' + name + ". Exiting."
raise SystemExit, message
image = image.convert()
if colorkey is not None:
if colorkey is -1:
colorkey = image.get_at((0, 0))
image.set_colorkey(colorkey, RLEACCEL)
return image, image.get_rect()
def main():
global cameraX, cameraY
global mouseX, mouseY
global bulletExists
mouseX = 0
mouseY = 0
bulletExists = False
pygame.init()
screen = pygame.display.set_mode(DISPLAY, FLAGS, DEPTH)
pygame.display.set_caption("Tale of Zur")
clock = pygame.time.Clock()
up = down = left = right = running = False
x = y = 0
background_images = []
platforms = []
background_images.append(pygame.image.load("assets/starting_background_1.jpg").convert())
entities = pygame.sprite.Group()
player = Player(32, 32)
bulletx = int(player.xlevel)
bullety = int(player.ylevel)
bullet = Bullet(player.rect.left, player.rect.top)
bullet.update(player.rect.left, player.rect.top)
screen.blit(background_images[0], [0, 0])
if bulletExists is True:
for i in range(10):
if up and i is not 10:
screen.blit(bullet.image, [bullet.bulletxpos + i, player.rect.top])
else:
screen.blit(bullet.image, [bullet.bulletxpos - i, player.rect.top])
camera.update(player)
player.update(up, down, left, right, running, platforms)
for e in entities:
screen.blit(e.image, camera.apply(e))
pygame.display.update()
如果執行此操作(在Camera.apply()方法中):
r = target.rect.move(self.state.topleft)
print r
y坐標為-25,因此會在屏幕外閃爍圖像。 我不確定為什么會這樣,但這就是問題所在。
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