Safe Area Edges for SpriteKit

SafeAreaEdges.swift

//
//  SKScene+Edges.swift
//  SafeAreaEdges
//
//  Created by Arun on 21/12/25.
//

import SpriteKit

// Make sure to access through `viewDidLayoutSubviews` method of ViewController.

// Edges to position nodes in SKScene.

extension SKScene {
    
    struct Edge {
        let top, bottom, xCenter, yCenter, left, right: CGFloat
    }
    
    private var viewSize: CGSize { view?.bounds.size ?? .zero }
}

// MARK: - Edges

extension SKScene {
    
    var edges: Edge {
        Edge(
            top: convertPoint(fromView: .zero).y,
            bottom: convertPoint(fromView: CGPoint(x: .zero, y: viewSize.height)).y,
            xCenter: convertPoint(fromView: CGPoint(x: viewSize.width/2, y: .zero)).x,
            yCenter:convertPoint(fromView: CGPoint(x: .zero, y: viewSize.height/2)).y,
            left: convertPoint(fromView: .zero).x,
            right: convertPoint(fromView: CGPoint(x: viewSize.width, y: .zero)).x
        )
    }
    
    var topLeft: CGPoint { CGPoint(x: edges.left, y: edges.top) }
    
    var topCenter: CGPoint { CGPoint(x: edges.xCenter, y: edges.top) }
    
    var topRight: CGPoint { CGPoint(x: edges.right, y: edges.top) }
    
    var centerLeft: CGPoint { CGPoint(x: edges.left, y: edges.yCenter) }
    
    var center: CGPoint { CGPoint(x: edges.xCenter, y: edges.yCenter) }
    
    var centerRight: CGPoint { CGPoint(x: edges.right, y: edges.yCenter) }
    
    var bottomLeft: CGPoint { CGPoint(x: edges.left, y: edges.bottom) }
    
    var bottomCenter: CGPoint { CGPoint(x: edges.xCenter, y: edges.bottom) }
    
    var bottomRight: CGPoint { CGPoint(x: edges.right, y: edges.bottom) }
}

// MARK: - Safe-area respecting edges

extension SKScene {
    
    private var safeAreaInsets: UIEdgeInsets { view?.safeAreaInsets ?? .zero }
    
    var safeAreaEdges: Edge {
        Edge(
            top: convertPoint(fromView: CGPoint(x: .zero, y: safeAreaInsets.top)).y,
            bottom: convertPoint(fromView: CGPoint(x: .zero, y: viewSize.height - safeAreaInsets.bottom)).y,
            xCenter: convertPoint(fromView: CGPoint(x: viewSize.width/2, y: .zero)).x,
            yCenter:convertPoint(fromView: CGPoint(x: .zero, y: viewSize.height/2)).y,
            left: convertPoint(fromView: CGPoint(x: safeAreaInsets.left, y: .zero)).x,
            right: convertPoint(fromView: CGPoint(x: viewSize.width - safeAreaInsets.right, y: .zero)).x
        )
    }
    
    var safeAreaTopLeft: CGPoint { CGPoint(x: safeAreaEdges.left, y: safeAreaEdges.top) }
    
    var safeAreaTopCenter: CGPoint { CGPoint(x: safeAreaEdges.xCenter, y: safeAreaEdges.top) }
    
    var safeAreaTopRight: CGPoint { CGPoint(x: safeAreaEdges.right, y: safeAreaEdges.top) }
    
    var safeAreaBottomLeft: CGPoint { CGPoint(x: safeAreaEdges.left, y: safeAreaEdges.bottom) }
    
    var safeAreaBottomCenter: CGPoint { CGPoint(x: safeAreaEdges.xCenter, y: safeAreaEdges.bottom) }
    
    var safeAreaBottomRight: CGPoint { CGPoint(x: safeAreaEdges.right, y: safeAreaEdges.bottom) }
}