Scrolling background with switching images

[BunBunBun]

Hi all, 

for example we have 3 type of images(400x600px) for background. and we have the game size (400x600px too).

how to better realize the progressively selecting 3 types (or more) of images with auto-scrolling?

1) create 2 images and move their Y-coordinate, then just switching the nameFrame. I think that this decision will slow down the performance of the game. to move so big images.

2) create via tileSprite object and move tilePosition.y, create the bitmap of back1 + back2, scroll them. then re-create the bitmap... and etc.

any ideas?

[samme]

I think (1) should be fine.

[3man7]

16 hours ago, samme said:

I think (1) should be fine.

I have a similar 'question':

Is (1) supposed to go in update? What if you use a tween in create? Would that be better performance related?