SKScene 에서 SKNode 를 Touch 하여 Drag 하기

Drag 한 공간을 저장하기 위한 변수를 설정

CGPoint deltaPoint;

전역변수로 설정하였습니다

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {

    CGPoint p = [[touches anyObject] locationInNode:self];

    [self enumerateChildNodesWithName:@"SKNode" usingBlock:^(SKNode *node, BOOL *stop) {

        if ([node containsPoint:p]) {

            CGPoint currentPoint = [[touches anyObject] locationInNode:self];

            CGPoint previousPoint = [[touches anyObject] previousLocationInNode:self];

            deltaPoint = CGPointMake(currentPoint.x - previousPoint.x, currentPoint.y - previousPoint.y);

        }        

    }];

}

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {

    deltaPoint = CGPointZero;

}

-(void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {

    deltaPoint = CGPointZero;

}

#pragma rendering

-(void)update:(CFTimeInterval)currentTime {

    [self enumerateChildNodesWithName:@"DetailNode" usingBlock:^(SKNode *node, BOOL *stop) {

        if (node.hidden == NO) {

            CGPoint newPoint = CGPointMake(node.position.x + deltaPoint.x, node.position.y + deltaPoint.y);

            node.position = newPoint;

            deltaPoint = CGPointZero;

        }

    }];

    

}

이와 같이하면 됩니다.