ElasticScrollLayer.m

gistfile1.m

#import "ElasticScrollLayer.h"

@implementation ElasticScrollLayer

@synthesize actionDuration, bouncePeriod;

+(id) nodeWithLayers:(NSArray *)layers widthOffset: (int) widthOffset actionDuration:(float)duration bouncePeriod:(float)period
{
    ElasticScrollLayer *layer = [[[self alloc] initWithLayers: layers widthOffset:widthOffset] autorelease];
    layer.actionDuration = duration;
    layer.bouncePeriod = period;
    return layer;
}

- (CGPoint) positionForPageWithNumber: (int) pageNumber
{
    return ccp( - pageNumber * (self.contentSize.width - self.pagesWidthOffset), 0.0f );
}

-(void) moveToPage:(int)page
{
    if (page < 0 || page >= [layers_ count]) {
        CCLOGERROR(@"CCScrollLayer#moveToPage: %d - wrong page number, out of bounds. ", page);
        return;
    }
    
    id changePage = [CCMoveTo actionWithDuration:actionDuration position: [self positionForPageWithNumber: page]];
    
    changePage = [CCEaseElasticOut actionWithAction:changePage period:bouncePeriod];
    
    changePage = [CCSequence actions: changePage,[CCCallFunc actionWithTarget:self selector:@selector(moveToPageEnded)], nil];
    
    [self runAction:changePage];
    currentScreen_ = page;
    
}

-(BOOL) ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event
{
    [self stopAllActions];
    
    return [super ccTouchBegan:touch withEvent:event];
}

@end