Nevigating One ViewController to another on Spritekit - ios

Question

I have a SpriteKit project with two view controllers. One is default GameViewController and another I added a TableViewController.
I want to switch between GameViewController to TableViewController.It did not switch the view controller.
In GameScene.m
GameViewController *vc =(GameViewController*)self.view.window.rootViewController;
[vc moveToFriendsViewController];
NSLog(#"vc called from gamescene");
In GameViewController.h
#protocol ViewControllerDelegate <NSObject>
-(void)moveToFriendsViewController;
#end
#interface GameViewController : UIViewController<ViewControllerDelegate>
#end
In GameViewController.m
-(void)moveToFriendsViewController{
FriendsTableViewController *vc =[[FriendsTableViewController alloc] init];
// do any setup you need for myNewVC
[self.navigationController pushViewController:vc animated:YES];
NSLog(#"vc called from viewcontroller");
}

Answer 1

I created a sample project for you to understand what I meant by using a scrolling node. It is very generic in nature and you can tweak, modify and add your own values, code, etc...
I store the user's y position in the touchesBegan method. I then check for any changes in y during the touchesMoved method and move the menuNode accordingly. However, there are other ways of doing this. You could for example just add a "up" and "down" button and move the menu based on which one is touched. Different approach but same result.
To see if a menu item was selected, I compare the user's y position touch from the touchesBegan method to the y position in the touchesEnded method. If there is no change, the user did not swipe up or down and I NSLog the selected node. You can add a tolerance of a couple points here in case the user moves the touch just a little bit.
Again, it's generic code and there are many ways to do what you want but this should give you a couple of ideas to work with.
#import "GameScene.h"
#implementation GameScene {
// declare ivars
SKSpriteNode *menuNode;
float yTouch;
}
-(void)didMoveToView:(SKView *)view {
// add menu background
menuNode = [SKSpriteNode spriteNodeWithColor:[SKColor darkGrayColor] size:CGSizeMake(200, 1000)];
menuNode.name = #"menuNode";
menuNode.position = CGPointMake(100, 800);
menuNode.zPosition = 10;
[self addChild:menuNode];
float yPos = -450;
for (int i = 0; i < 23; i++) {
SKLabelNode *menuItem = [SKLabelNode labelNodeWithFontNamed:#"HelveticaNeue"];
menuItem.name = [NSString stringWithFormat:#"menuItem-%i",i];
menuItem.text = [NSString stringWithFormat:#"menuItem-%i",i];
menuItem.fontSize = 20;
menuItem.fontColor = [SKColor redColor];
menuItem.horizontalAlignmentMode = SKLabelHorizontalAlignmentModeCenter;
menuItem.verticalAlignmentMode = SKLabelVerticalAlignmentModeCenter;
menuItem.position = CGPointMake(0, yPos);
menuItem.zPosition = 25;
[menuNode addChild:menuItem];
yPos += 40;
}
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
for (UITouch *touch in touches) {
CGPoint touchLocation = [touch locationInNode:self];
// get starting y position of touch
yTouch = touchLocation.y;
}
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
for (UITouch *touch in touches) {
CGPoint touchLocation = [touch locationInNode:self];
// check for changes in touched y position and menuNode limits
if((touchLocation.y > yTouch) && (menuNode.position.y < 800)) {
menuNode.position = CGPointMake(menuNode.position.x, menuNode.position.y+15);
}
if((touchLocation.y < yTouch) && (menuNode.position.y > 200)) {
menuNode.position = CGPointMake(menuNode.position.x, menuNode.position.y-15);
}
}
}
-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
CGPoint touchLocation = [touch locationInNode:self.scene];
SKNode *node = [self nodeAtPoint:touchLocation];
// if current touch position y is same as when touches began
if(touchLocation.y == yTouch) {
NSLog(#"%#",node);
}
}
-(void)update:(CFTimeInterval)currentTime {
}
#end

Answer 2

If you are using xibs, your method should work, but in Storyboard the below method will work fine.
-(void)moveToFriendsViewController{
FriendsTableViewController *vc =[[FriendsTableViewController alloc] init];
UIStoryboard * storyboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:#"FriendsTableViewController"];
[self.navigationController pushViewController:vc animated:YES];
NSLog(#"vc called from viewcontroller");
}