Function StartSpriteCombine

src/viewport.cpp:764–768

* Starts a block of sprites, which are "combined" into a single bounding box. * * Subsequent calls to #AddSortableSpriteToDraw will be drawn into the same bounding box. * That is: The first sprite that is not clipped by the viewport defines the bounding box, and * the following sprites will be child sprites to that one. * * That implies: * - The drawing order is definite. No other sprites

 * You cannot nest "combined" blocks.
 */
void StartSpriteCombine()
{
	assert(_vd.combine_sprites == SPRITE_COMBINE_NONE);
	_vd.combine_sprites = SPRITE_COMBINE_PENDING;
}

/**
 * Terminates a block of sprites started by #StartSpriteCombine.