[1.16.1] Rotation of ProjectileItemEntitiy

Hello, 

I have a little problem concerning my ProjectileItemEntity. I made a new Item overriding the onItemRightClick method, where a new Entity should be spawned and shooted like a snowball, but at the current stage the Entity always flys in the same direction. The flying itself works perfectly, only the direction is wrong. Here is my code for the item:

@Override
	public ActionResult<ItemStack> onItemRightClick(World worldIn, PlayerEntity playerIn, Hand handIn) {
		ItemStack stack = playerIn.getHeldItem(handIn);
        Vector3d look = playerIn.getLookVec();
        HeartEntity heart = new HeartEntity(1.0D,1.0D,1.0D,worldIn);
        heart.setPosition(playerIn.lastTickPosX + look.x , playerIn.lastTickPosY + look.y + 1, playerIn.lastTickPosZ + look.z);
        Vector3d vec3d = heart.getMotion();
        double d0 = heart.getPosX() + vec3d.x;
        double d1 = heart.getPosY() + vec3d.y;
        double d2 = heart.getPosZ() + vec3d.z;
        worldIn.addParticle(ParticleTypes.HEART, d0 - vec3d.x * 0.25D, d1 - vec3d.y * 0.25D, d2 - vec3d.z * 0.25D, vec3d.x, vec3d.y, vec3d.z);
        heart.setShooter(playerIn);
        heart.shoot(heart.getPosX(), heart.getPosY(), heart.getPosZ(), playerIn.rotationYaw, playerIn.rotationPitch);
        if (!worldIn.isRemote) {
            worldIn.addEntity(heart);
            if(!playerIn.isCreative()) {
            stack.shrink(1);
            }
        }
        worldIn.playSound(playerIn, new BlockPos(playerIn.getPositionVec()), SoundEvents.ENTITY_SNOWBALL_THROW, SoundCategory.PLAYERS,1.0f,1.0f);
        return new ActionResult<ItemStack>(ActionResultType.SUCCESS, stack);
    }

I hope that somebody can help me and thank you in advance.