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python - 将大炮正确地朝向玩家 Pygame 旋转仍然存在问题

问题描述

在此处输入图像描述以前很少有人帮我解决这个问题，但轮换仍然搞砸了我的大炮不会向玩家旋转，它们完全不合适我真的需要帮助解决这个问题，这是我第一次尝试让某些东西向玩家旋转我我试图让我的大炮嘴向玩家旋转，但旋转搞砸了，我不知道如何修复它。

    class enemyshoot:
        def __init__(self,x,y,height,width,color):
        # [...............]
             self.look_at_pos = (x,y)

     def draw(self):
          # [............]
            self.rect = self.shootsright.get_rect(topleft = (self.x, self.y))

            dx = self.look_at_pos[0] - self.rect.centerx
            dy = self.look_at_pos[1] - self.rect.centery 
            angle = (180/math.pi) * math.atan2(-dx, dy)
            (window.blit(self.image, self.rect))
            self.image = pygame.transform.rotate(self.shootsright, angle)
            self.rect  = self.image.get_rect(center = self.rect.center)

        def lookAt( self, coordinate ):
            self.look_at_pos = coordinate

我完整的敌人射击课

    shotsright = pygame.image.load("canss.png")
    class enemyshoot:
        def __init__(self,x,y,height,width,color):
            self.x = x
            self.y =y
            self.height = height
            self.width = width
            self.color = color
            self.health = 10
            self.hitbox = (self.x + -20, self.y + 30, 31, 57)
           #-------------------------------------------------------
            # Make a Reference Copy of the bitmap for later rotation
            self.shootsright = pygame.image.load("canss.png")
            self.shootsright = pygame.transform.scale(self.shootsright,(self.shootsright.get_width()-150,self.shootsright.get_height()-150))            
            self.image    = self.shootsright
            self.rect     = self.image.get_rect()
            self.position = pygame.math.Vector2( (x, y) )
            self.isLookingAtPlayer = False
            self.look_at_pos = (x,y)
        def draw(self):
            self.rect.topleft = (self.x,self.y)
            window.blit(self.image, self.rect)
            self.rect = self.shootsright.get_rect(topleft = (self.x, self.y))

            dx = self.look_at_pos[0] - self.rect.centerx
            dy = self.look_at_pos[1] - self.rect.centery 
            angle = (180/math.pi) * math.atan2(-dy, dx)
            self.image = pygame.transform.rotate(self.shootsright, angle)
            self.rect  = self.image.get_rect(center = self.rect.center)

            # ------------
            self.hits = (self.x + 20, self.y, 28,60)
            pygame.draw.rect(window, (255,0,0), (self.hitbox[0], self.hitbox[1] - 60, 100, 10)) # NEW
            pygame.draw.rect(window, (0,255,0), (self.hitbox[0], self.hitbox[1] - 60, 100 - (5 * (10 - self.health)), 10))
            self.hitbox = (self.x + 200, self.y + 200, 51, 65)
        def lookAt( self, coordinate ):
            self.look_at_pos = coordinate


            
    black = (0,0,0)
    enemyshooting = []
    platformGroup = pygame.sprite.Group
    platformList = []
    level = ["                                                                                                                     p               p           p                         p                        p        ",
             "                                       ",
             "                             ",
             "                                      ",
             "                                  ",
             "                           ",
             "                                      ",
             "                                      ",
             "                                    ",
             "                                   ",
             "                    ",]
    for iy, row in enumerate(level):
        for ix, col in enumerate(row):
            if col == "p":
                new_platforms = enemyshoot(ix*10, iy*50, 10,10,(255,255,255))
                enemyshooting.append(new_platforms)

这是大炮向玩家旋转的地方，无论它们在哪里

            for enemyshoot in enemyshooting:
                if not enemyshoot.isLookingAtPlayer:
                    enemyshoot.lookAt((playerman.x, playerman.y))

标签： pythonpygame

解决方案

首先，大炮图像太高了。剪裁边框并使用较小的图像。例如：

图像的中心是佳能的旋转点。您可以将图像缩放到您想要的任何大小。例如 100x100：

self.shootsright = pygame.image.load("canss.png")
self.shootsright = pygame.transform.smoothscale(self.shootsright, (100, 100))

另请参阅如何将图像（播放器）旋转到鼠标方向？.

无论如何，您必须在旋转图像并计算矩形后对大炮进行blit 。

class enemyshoot:
    def __init__(self,x,y,height,width,color):
        self.x = x
        self.y = y

        # [...]
        
        self.shootsright = pygame.image.load("canss.png")
        self.shootsright = pygame.transform.smoothscale(self.shootsright, (100, 100))            

        self.image = self.shootsright
        self.rect  = self.image.get_rect(center = (self.x, self.y))
        self.look_at_pos = (self.x, self.y)

        self.hitbox = (*self.rect.topleft, *self.rect.size)

    def draw(self):
        
        dx = self.look_at_pos[0] - self.x
        dy = self.look_at_pos[1] - self.y
        angle = (180/math.pi) * math.atan2(dx, dy)
        self.image = pygame.transform.rotate(self.shootsright, angle)
        self.rect  = self.image.get_rect(center = (self.x, self.y))

        window.blit(self.image, self.rect)
        self.hitbox = (*self.rect.topleft, *self.rect.size)
 
    def lookAt( self, coordinate ):
        self.look_at_pos = coordinate

最小的例子： repl.it/@Rabbid76/PyGame-RotateWithMouse

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