示例#1
0
    def __init__(self,
                 img,
                 x=0,
                 y=0,
                 blend_src=GL_SRC_ALPHA,
                 blend_dest=GL_ONE_MINUS_SRC_ALPHA,
                 batch=None,
                 group=None,
                 usage='dynamic'):
        '''Create a sprite.

        :Parameters:
            `img` : `AbstractImage` or `Animation`
                Image or animation to display.
            `x` : int
                X coordinate of the sprite.
            `y` : int
                Y coordinate of the sprite.
            `blend_src` : int
                OpenGL blend source mode.  The default is suitable for
                compositing sprites drawn from back-to-front.
            `blend_dest` : int
                OpenGL blend destination mode.  The default is suitable for
                compositing sprites drawn from back-to-front.
            `batch` : `Batch`
                Optional batch to add the sprite to.
            `group` : `Group`
                Optional parent group of the sprite.
            `usage` : str
                Vertex buffer object usage hint, one of ``"none"`` (default),
                ``"stream"``, ``"dynamic"`` or ``"static"``.  Applies
                only to vertex data.

        '''
        if batch is not None:
            self._batch = batch

        self._x = x
        self._y = y

        if isinstance(img, image.Animation):
            self._animation = img
            self._frame_index = 0
            self._texture = img.frames[0].image.get_texture()
            self._next_dt = img.frames[0].duration
            if self._next_dt:
                clock.schedule_once(self._animate, self._next_dt)
        else:
            self._texture = img.get_texture()

        self._group = SpriteGroup(self._texture, blend_src, blend_dest, group)
        self._usage = usage
        self._create_vertex_list()
示例#2
0
    def _set_image(self, img):
        if self._animation is not None:
            clock.unschedule(self._animate)
            self._animation = None

        if isinstance(img, image.Animation):
            self._animation = img
            self._frame_index = 0
            self._set_texture(img.frames[0].image.get_texture())
            self._next_dt = img.frames[0].duration
            if self._next_dt:
                clock.schedule_once(self._animate, self._next_dt)
        else:
            self._set_texture(img.get_texture())
        self._update_position()
示例#3
0
    def _animate(self, dt):
        self._frame_index += 1
        if self._frame_index >= len(self._animation.frames):
            self._frame_index = 0
            self.dispatch_event('on_animation_end')
            if self._vertex_list is None:
                return  # Deleted in event handler.

        frame = self._animation.frames[self._frame_index]
        self._set_texture(frame.image.get_texture())

        if frame.duration is not None:
            duration = frame.duration - (self._next_dt - dt)
            duration = min(max(0, duration), frame.duration)
            clock.schedule_once(self._animate, duration)
            self._next_dt = duration
        else:
            self.dispatch_event('on_animation_end')