Question

我在Pygame上制作2D平台游戏。虽然我在面向左边的时候成功地激活了我的敌人精灵，但是当我翻转图像使他面朝右时，我也很难做同样的事情。我怀疑它是因为我在self.currentImage = 4下面使用了self.x += self.speed，所以它不断循环并跳过我blitted的其他图像。基本上，图像看起来只是跳过而从selfcurrentimage 1到self.currentimage 3，动画工作正常。

class Enemy:
def __init__(self,x,y):

    self.x = x
    self.y = y
    self.width = 55
    self.height = 51
    self.rect = pygame.Rect(self.x,self.y,self.width,self.height)
    self.speed=1
    self.s0 = pygame.image.load("s0.png")
    self.s1 = pygame.image.load("s1.png")
    self.s2 = pygame.image.load("s2.png")
    self.s3 = pygame.image.load("s3.png")
    self.attack = pygame.image.load("attack.png")
    self.rotateds0 = pygame.transform.flip(self.s0 ,True, False)
    self.rotateds1 = pygame.transform.flip(self.s1 ,True, False)
    self.rotateds2 = pygame.transform.flip(self.s2 ,True, False)
    self.rotateds3 = pygame.transform.flip(self.s3 ,True, False)

    self.rotate = False
    collision2 = False
    self.TimeTarget = 10
    self.TimeNum = 0
    self.currentImage = 0

def move(self,player):
    if player.x > 100:
        if self.x > player.x:
            self.x -= self.speed
        elif self.x < player.x:
            self.x += self.speed
            self.currentImage = 4

def update(self,CollisionDetect,player):
    self.TimeNum+=1
    if self.TimeNum == self.TimeTarget:
        if self.currentImage == 0:
            self.currentImage = 1
        elif self.currentImage == 1:
            self.currentImage = 2
        elif self.currentImage == 2:
            self.currentImage = 3
        elif self.currentImage == 3:
            self.currentImage = 0
        elif self.currentImage == 4:
            self.currentImage = 5
        elif self.currentImage == 5:
            self.currentImage = 6
        elif self.currentImage == 6:
            self.currentImage = 7
        elif self.currentImage == 7:
            self.currentImage = 4

        self.TimeNum = 0

    if self.currentImage == 0:
        screen.blit(self.s0, (self.x,self.y))
    elif self.currentImage == 1:
        screen.blit(self.s1, (self.x,self.y))
    elif self.currentImage == 2:
        screen.blit(self.s2, (self.x,self.y))
    elif self.currentImage == 3:
        screen.blit(self.s3, (self.x,self.y))
    elif self.currentImage == 4:
        screen.blit(self.rotateds0, (self.x,self.y))
    elif self.currentImage == 5:
        screen.blit(self.rotateds1, (self.x,self.y))
    elif self.currentImage == 6:
        screen.blit(self.rotateds2, (self.x,self.y))
    elif self.currentImage == 7:
        screen.blit(self.rotateds3, (self.x,self.y))

    collision2 = CollisionDetect(self.x,self.y,self.width,self.height,player.x,player.y,player.width,player.height)

Answer 1

您在每次移动中都设置self.currentImage = 4，因此无法更改为5,6或7.您必须在当前移动self.x < player.x时才能这样做，但在之前的移动中有self.x > player.x（敌人改变方向）。您可以使用self.currentImage来识别这种情况 - 如果在之前的移动中您有self.x > player.x，那么self.currentImage仍然是< 4

def move(self,player):

    if player.x > 100:

        if self.x > player.x:
            self.x -= self.speed
            # enemy changed direction
            if self.currentImage > 3:
                self.currentImage = 0

        elif self.x < player.x:
            self.x += self.speed
            # enemy changed direction
            if self.currentImage < 4:
                self.currentImage = 4

Answer 2

您不应强制move()中的帧编号。而不是使用一个单独的变量，它将从正常或翻转的图像中进行选择，并在move()中为其设置一个值。也许你打算self.rotate来达到这个目的。

这也将简化用于currentImage的状态机到简单的添加和环绕。

如何正确设置我的精灵动画？

2 个答案: