Question

我正在尝试制作一条左右移动的多个身体部位的蛇。我正在使用别针，但在蛇停止时，身体一直在移动并且不会停止。我已经弄乱了最大和最小角度以及扭矩，但似乎没有任何效果。我应该使用不同类型的关节吗？

Answer 1

很抱歉，我无法登录我的其他帐户，但是这是代码。基本上第二部分只是摇摆不定。我希望增加7-8个部件，但他们只是继续摇摆，特别是在移动后＃34;头部＆＃34;。我想要一个流畅的＆＃34;猛扑＆＃34;我移动蛇的动作。

    self.physicsWorld.gravity = CGVectorMake(0, -100)
    self.physicsWorld.contactDelegate = self

    head.size = CGSize(width: 25,height: 25)
    head.physicsBody = SKPhysicsBody(texture: head.texture, size: head.size)
    head.position = CGPointMake(100,400)
    head.anchorPoint = CGPoint(x: 0.5, y: 1)
    head.physicsBody!.dynamic = false
    head.zPosition = 3
    self.addChild(head)

    var p1 = SKSpriteNode(imageNamed: "snakeBodyPart.png")
    p1.size = CGSize(width: 25,height: 25)
    p1.physicsBody = SKPhysicsBody(texture: p1.texture, size: p1.size)
    p1.position = CGPointMake(100,380)
    p1.anchorPoint = CGPoint(x: 0.5, y: 1)
    p1.physicsBody!.dynamic = true
    addChild(p1)

    var joint = SKPhysicsJointPin.jointWithBodyA(head.physicsBody, bodyB: p1.physicsBody, anchor: CGPoint(x: CGRectGetMidX(head.frame), y: CGRectGetMinY(head.frame) + 10))
    joint.upperAngleLimit = 0.1
    joint.rotationSpeed = 0.1
    self.physicsWorld.addJoint(joint)

Swift - 精灵套件 - 让SKPhysicsJointPin的动作更少

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