ContentView.swift

import SwiftUI
import SpriteKit
struct ContentView: View {
    var scene: SKScene {
        let scene = GameScene()
        scene.size = CGSize(width: 300, height: 400)
        scene.scaleMode = .fill
        return scene
    }

    var body: some View {
        SpriteView(scene: scene)
            .frame(width: 300, height: 400)
            .ignoresSafeArea()
    }
}
/*
struct ContentView: View {
let width = UIScreen.main.bounds.size.width
let height = UIScreen.main.bounds.size.height

var body: some View {
let scene = GameScene()
scene.anchorPoint = CGPoint(x: 0.5, y: 0.5)
scene.scaleMode = .resizeFill
return SpriteView(scene: scene)
.frame(width: width, height: height)
.edgesIgnoringSafeArea(.all)
}
}
*/
/////////////////////
GameScene.swift

import SpriteKit
import GameplayKit
class GameScene: SKScene {
let width = UIScreen.main.bounds.size.width
let height = UIScreen.main.bounds.size.height
var shapeNode = SKShapeNode()
override func didMove(to view: SKView) {
backgroundColor = .blue
let rect = CGRect(x: -1 * width / 2,
y: -1 * height / 2,
width: width,
height: height);
self.physicsBody = SKPhysicsBody(edgeLoopFrom: rect)
physicsWorld.gravity = CGVector(dx: 0.0, dy: -1.0)
print("frame what?")
print(frame)
// 落下するボール
shapeNode = SKShapeNode(circleOfRadius: 50)
shapeNode.position = CGPoint(x: 0,
y: 150)
shapeNode.fillColor = .white
shapeNode.strokeColor = .blue
shapeNode.physicsBody = SKPhysicsBody(circleOfRadius: shapeNode.frame.width / 2)
shapeNode.physicsBody?.isDynamic = true
shapeNode.physicsBody?.linearDamping = 0.1
shapeNode.physicsBody?.restitution = 0.8
addChild(shapeNode)
// 動かないボール
let shapeNode3 = SKShapeNode(circleOfRadius: 50)
shapeNode3.position = CGPoint(x: 40, y: -90)
shapeNode3.fillColor = .red
shapeNode3.strokeColor = .red
shapeNode3.physicsBody = SKPhysicsBody(circleOfRadius: shapeNode.frame.width / 2)
shapeNode3.physicsBody?.isDynamic = false
shapeNode3.physicsBody?.affectedByGravity = false
addChild(shapeNode3)
}
override func touchesBegan(_ touches: Set, with event: UIEvent?) {
shapeNode.physicsBody?.applyImpulse(CGVector(
dx: Double(arc4random_uniform(200)) - 100.0,
dy: Double(arc4random_uniform(200)) - 100.0))
}
override func touchesMoved(_ touches: Set, with event: UIEvent?) {
}
}