Scrolling Background « cocos2d for iPhone

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Scrolling Background

(8 posts) (4 voices)

Started 2 years ago by Jamil
Latest reply from yershuachu

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Jamil
Member

Hello, newbie here, I've trying searching up and finding as many answers as I can so I don't ask dumb questions but this is one I'm still not sure of. I want to make like a top down view game and basically the ground is larger than the screen so there should be the ability to scroll around. What's the best way to do that?

I've done something like this in the past as a java project. What I did there was have like a "camera" point, all the sprites' positions would be changed as normal, but when drawing, they would be drawn by subtracting their position from the camera so I would get the view I want on screen. I saw a camera point in the CocosNode but don't know if it should be used the same way.

Thanks for your help

Posted 2 years ago #
Jamil
Member

is it really a hard question or what?

Posted 2 years ago #
pabloruiz55
Member

you could do a search in this forum and in the old one...

searching "scrolling" here, returned this:

http://www.cocos2d-iphone.org/forum/topic/309#post-1746

Posted 2 years ago #
Jamil
Member

hey thanks man, also how do I know if I should use AtlasSprite or regular Sprite. I tried searching but I just get posts about each one specifically but not really a comparison. Thanks

Posted 2 years ago #
Jamil
Member

Okay so I decided to try using an AtlasSprite for my background. Went with scrolling background down instead of having the sprites scroll up, it's a top down shooter, so it felt better that way. Anyway I made two AtlasSprites that like scroll one on top of the other to make the full length of the background, but what I noticed in my test is that it doesn't stitch perfectly. Am I using it the wrong way?

Posted 2 years ago #
Codemattic
Moderator

Jamil, this entry in the wiki may help you:

http://www.cocos2d-iphone.org/wiki/doku.php/tips:generic#tilemapatlas_gaps_between_tiles

Posted 2 years ago #
Jamil
Member

Thanks, but now my question is, should I have gone with a TileMapAtlas, or is it possible to do the samething with an AtlasSprite?

Posted 2 years ago #
yershuachu
Member

Maybe it's late but this topic is top1 google so:

There is a simple way to do scrolling background.
You have to create two window size spirtes. One in the windows next just next to it (away from view).
Than in time just move both sprites and when the next background would fulify windows jump with invisible part of background on the another side of view. (you can modulo movement to make it slower).

ah use @selector to set scrolling for both.

i have put full answer in a new topic:
http://www.cocos2d-iphone.org/forum/topic/12598#post-70766

Posted 1 year ago #

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