ios - 对 SKShapeNode 施加脉冲

Question

import SpriteKit
import GameplayKit

class GameScene: SKScene {
    var player = SKShapeNode()
    let ballRadius: CGFloat = 20

    override func didMove(to view: SKView) {
        view.scene?.anchorPoint = CGPoint(x: 0.5,y : 0.5)
        player = SKShapeNode(circleOfRadius: ballRadius)
        player.name = "player"
        player.fillColor = .green
        player.position = CGPoint(x: 0, y: 0)
        player.physicsBody?.isDynamic = true

        self.addChild(player)

        player.physicsBody?.applyImpulse(CGVector(dx: 0, dy: 10))
    }

    override func update(_ currentTime: TimeInterval) {
        // Called before each frame is rendered
    }
}

我正在尝试为玩家添加一种冲动，但我就是无法弄清楚，请非常具体，因为我是初学者。我认为这与 skshapenode 不是基于体积的对象有关，但我不确定

Answer 1

你走在正确的道路上!您所需要做的就是向您的播放器添加一个物理体以使其移动。

player.physicsBody = SKPhysicsBody(circleOfRadius: 30) 
    // the 30 in this case is an example. You can just change it to whatever you want