bodyWithEdgeLoopFromRect not working in landscape

Question

I'm just trying to set up a basic scene in landscape, with gravity, and having the scene in an edge loop.

I set up the scene's physics body and the mainCharacter sprite physics body, here is my code:

-(id)initWithSize:(CGSize)size
{
    if (self = [super initWithSize:size])
    {
        self.backgroundColor = [SKColor redColor];
        [self setPhysicsBody:[SKPhysicsBody bodyWithEdgeLoopFromRect:[self frame]]];
    }
    return self;
}


-(void)setupMain
{
    if (!self.mainCharacter)
    {
        self.mainCharacter = [[SKSpriteNode alloc] initWithImageNamed:@"spriteDefault"];

       [self.mainCharacter setPosition:CGPointMake(CGRectGetMidX([self frame]), CGRectGetMidY([self frame]))];

       [self addChild:self.mainCharacter];

       self.mainCharacter.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:self.mainCharacter.frame.size];
       self.mainCharacter.physicsBody.dynamic = YES;
       self.mainCharacter.physicsBody.affectedByGravity = YES;
       self.mainCharacter.physicsBody.mass = 0.02;
    }
 }

So, in portrait mode, everything works perfectly, however, in landscape, things get really screwy.

I figured it has something to do with

  [self setPhysicsBody:[SKPhysicsBody bodyWithEdgeLoopFromRect:[self frame]]];

Oddly enough, the edge loop for the x axis for landscape (the y axis in portrait mode) works fine, but I just fall through the y axis (x for portrait).

My guess is that the frame is returning the position on the y axis somewhere not within the bounds of the screen in landscape mode.... meaning its somewhere above or below the screen. ...Maybe... Not really sure.

However, I have tried several different options, including manually setting the rectangle myself by using CGRectMake() I wasn't able to get anything to work properly.

Any advice would be greatly appreciated!!!

check this http://stackoverflow.com/questions/19353942/skscene-ipad-height-width-reversed/19354725#19354725 — DogCoffee, Oct 25 '13 at 05:40

score 0 · Answer 1 · answered Oct 25 '13 at 03:59

0

Okay, this is a super Janky fix...

 self.physicsBody = [SKPhysicsBody bodyWithEdgeLoopFromRect:CGRectMake(0, 200, 320, 200)];

I'm not sure why this works... and it's obviously going to have some problems on smaller screen sizes... better fixes and explanations would be much appreciated!! Thanks :D

answered Oct 25 '13 at 03:59

Nolan Anderson

576
1
6
15

see Smick's comment for the actual solution – CodeSmile Oct 25 '13 at 06:54

score 0 · Answer 2 · answered Apr 01 '14 at 08:05

You will need to setup the edge loop in the viewWillLayoutSubviews, since the scene size is only known at then:

-(void)viewWillLayoutSubviews {
[super viewWillLayoutSubviews];

// Configure the view.
SKView * skView = (SKView *)self.view;
if (!skView.scene) {
    skView.showsFPS = YES;
    skView.showsNodeCount = YES;

    SKScene * scene = [MyScene sceneWithSize:skView.bounds.size];
    scene.scaleMode = SKSceneScaleModeAspectFill;

    [skView presentScene:scene];
}

}

score 0 · Answer 3 · answered Jan 27 '15 at 19:19

0

You need to set the collisionBitMask of your mainCharacter equals to the sceneCategory (need to create). Your nodes will only be affected if you tell them.

answered Jan 27 '15 at 19:19

Diogo Aleixo

841
1
8
20

bodyWithEdgeLoopFromRect not working in landscape

3 Answers3

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