SKNode+Helper.m

SKNode+Helper.m

#import "SKNode+Helper.h"

@implementation SKNode (Helper)

- (float)width {
    return self.frame.size.width;
}

- (float)height {
    return self.frame.size.height;
}

- (float)top {
    return self.frame.origin.y;
}

- (float)bottom {
    return self.top + self.height;
}

- (float)left {
    return self.frame.origin.x;
}

- (float)right {
    return self.left + self.width;
}


- (double)updatedXForNodeSubclasses:(double)x {
    if ([self isKindOfClass:[SKLabelNode class]]) {
        SKLabelNode *lblNode = (SKLabelNode *) self;
        switch (lblNode.horizontalAlignmentMode) {
            case SKLabelHorizontalAlignmentModeCenter:
                return x + self.frame.size.width/2;
                break;
            case SKLabelHorizontalAlignmentModeRight:
                return x + self.frame.size.width;
                break;
            default:
                break;
        }
    }
    if ([self isKindOfClass:[SKSpriteNode class]]) {
        SKSpriteNode *spriteNode = (SKSpriteNode *) self;
        CGPoint anchor = spriteNode.anchorPoint;
        return x + self.frame.size.width * anchor.x;
    }
    if ([self isKindOfClass:[SKScene class]]) {
        SKScene *sceneNode = (SKScene *) self;
        CGPoint anchor = sceneNode.anchorPoint;
        return x + self.frame.size.width * anchor.x;
    }
    if ([self isKindOfClass:[SKVideoNode class]]) {
        SKVideoNode *videoNode = (SKVideoNode *) self;
        CGPoint anchor = videoNode.anchorPoint;
        return x + self.frame.size.width * anchor.x;
    }
    return x;
}

- (double)updatedYForNodeSubclasses:(double)y {
    if ([self isKindOfClass:[SKLabelNode class]]) {
        SKLabelNode *lblNode = (SKLabelNode *) self;
        switch (lblNode.verticalAlignmentMode) {
            case SKLabelVerticalAlignmentModeTop:
                return y + self.frame.size.height;
                break;
            case SKLabelVerticalAlignmentModeCenter:
                return y + self.frame.size.height/2;
                break;
            default:
                break;
        }
    }
    if ([self isKindOfClass:[SKSpriteNode class]]) {
        SKSpriteNode *spriteNode = (SKSpriteNode *) self;
        CGPoint anchor = spriteNode.anchorPoint;
        return y + self.frame.size.height * anchor.y;
    }
    if ([self isKindOfClass:[SKScene class]]) {
        SKScene *sceneNode = (SKScene *) self;
        CGPoint anchor = sceneNode.anchorPoint;
        return y + self.frame.size.height * anchor.y;
    }
    if ([self isKindOfClass:[SKVideoNode class]]) {
        SKVideoNode *videoNode = (SKVideoNode *) self;
        CGPoint anchor = videoNode.anchorPoint;
        return y + self.frame.size.height * anchor.y;
    }
    return y;
}

- (void)centerXInParentAndSetY:(int)y {
    if (!self.parent) {
        return;
    }
    CGRect myFrame = self.frame;
    CGRect parentFrame = self.parent.frame;
    double x = (parentFrame.size.width - myFrame.size.width)/2;
    x = [self updatedXForNodeSubclasses:x];
    self.position = CGPointMake(x, y);
}

- (void)centerXInParent {
    [self centerXInParentAndSetY:self.position.y];
}

- (void)centerYInParentAndSetX:(int)x {
    if (!self.parent) {
        return;
    }
    CGRect myFrame = self.frame;
    CGRect parentFrame = self.parent.frame;
    double y = (parentFrame.size.height - myFrame.size.height)/2;
    y = [self updatedYForNodeSubclasses:y];
    self.position = CGPointMake(x, y);
}

- (void)centerYInParent {
    [self centerYInParentAndSetX:self.position.y];
}

- (void)centerInParent {
    if (!self.parent) {
        return;
    }
    CGRect myFrame = self.frame;
    CGRect parentFrame = self.parent.frame;
    double x = (parentFrame.size.width - myFrame.size.width)/2;
    double y = (parentFrame.size.height - myFrame.size.height)/2;
    x = [self updatedXForNodeSubclasses:x];
    y = [self updatedYForNodeSubclasses:y];
    self.position = CGPointMake(x, y);
}

@end