Move Image in CocoS2d - iphone

Question

I am developing game in Cocos2d. In it background of scene moving constantly with x - axis.
I want to understand how can i do it because i am new in cocos2d.
thanks in advance

Answer 1

Take a look to my code - here are the sources. Find the "moving" technique in HelloWorldLayer.m. I have taken a 360 panorama picture and put it to move continuously from right to left, in fullscreen.
In your YourClass.h file:
#import "cocos2d.h"
#interface YourClass : CCLayer
+(CCScene *) scene;
#end
In your YourClass.m file:
#import "YourClass.h"
#implementation YourClass
CCSprite *panorama;
CCSprite *appendix;
//_____________________________________________________________________________________
+(CCScene *) scene
{
// 'scene' is an autorelease object.
CCScene *scene = [CCScene node];
// 'layer' is an autorelease object.
YourClass *layer = [YourClass node];
// add layer as a child to scene
[scene addChild: layer];
// return the scene
return scene;
}
//_____________________________________________________________________________________
// on "init" you need to initialize your instance
-(id) init
{
// always call "super" init
// Apple recommends to re-assign "self" with the "super" return value
if( (self=[super init])) {
panorama = [CCSprite spriteWithFile: #"panorama.png"];
panorama.position = ccp( 1709/2 , 320/2 );
[self addChild:panorama];
appendix = [CCSprite spriteWithFile: #"appendix.png"];
appendix.position = ccp( 1709+480/2-1, 320/2 );
[self addChild:appendix];
// schedule a repeating callback on every frame
[self schedule:#selector(nextFrame:)];
}
return self;
}
//_____________________________________________________________________________________
- (void) nextFrame:(ccTime)dt {
panorama.position = ccp(panorama.position.x - 100 * dt, panorama.position.y);
appendix.position = ccp(appendix.position.x - 100 * dt, appendix.position.y);
if (panorama.position.x < -1709/2) {
panorama.position = ccp( 1709/2 , panorama.position.y );
appendix.position = ccp( 1709+480/2-1, appendix.position.y );
}
}
// on "dealloc" you need to release all your retained objects
- (void) dealloc
{
// in case you have something to dealloc, do it in this method
// in this particular example nothing needs to be released.
// cocos2d will automatically release all the children (Label)
// don't forget to call "super dealloc"
[super dealloc];
}
//_____________________________________________________________________________________
#end
Play a little with this code and you will get what you need.