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SpriteKit으로 작업하고 다른 관절의 움직임을 허용하기 위해 구부러지는 팔꿈치 관절을 만들려고합니다. 문제는 내가 조인트를 만들 때 화면을 가로 질러 움직이면 부품이 360도 회전하여 움직이는 동작이 없으므로 고정 된 조인트가없는 것입니다 (즉, 동작 범위가있는 팔꿈치). 필자는 일부 코드를 첨부했습니다. 일부는 실험적으로 주석 처리되었습니다.신속한 물리학 공동 생성
var lowerTorso: SKNode!
var upperTorso: SKNode!
var upperArmFront: SKNode!
var lowerArmFront: SKNode!
var upperArmBack: SKNode!
var lowerArmBack: SKNode!
var fistFront: SKNode!
var cricketBat: SKNode!
var bottom: SKNode!
let upperArmAngleDeg: CGFloat = 10
let lowerArmAngleDeg: CGFloat = 150
let batAngleDeg: CGFloat = 270
override func didMove(to view: SKView) {
physicsWorld.contactDelegate = self
physicsWorld.gravity = CGVector(dx: 0, dy: -20)
physicsWorld.speed = 0.1
//2
lowerTorso = childNode(withName: "torso_lower")
upperTorso = lowerTorso.childNode(withName: "torso_upper")
upperArmFront = upperTorso.childNode(withName: "arm_upper_front")
lowerArmFront = upperArmFront.childNode(withName: "arm_lower_front")
upperArmBack = upperArmFront.childNode(withName: "arm_upper_back")
lowerArmBack = upperArmBack.childNode(withName: "arm_lower_back")
cricketBat = lowerArmFront.childNode(withName: "cricketBat")
fistFront = cricketBat.childNode(withName: "fist_front")
let joint = SKPhysicsJointPin.joint(withBodyA: upperArmFront.physicsBody!,
bodyB: lowerArmFront.physicsBody!,
anchor: CGPoint(x: upperArmFront.frame.midX, y: upperArmFront.frame.midY))
physicsWorld.add(joint)
let joint2 = SKPhysicsJointPin.joint(withBodyA: lowerArmFront.physicsBody!,
bodyB: cricketBat.physicsBody!,
anchor: CGPoint(x: lowerArmFront.frame.maxX, y: lowerArmFront.frame.maxY))
physicsWorld.add(joint2)
/*
lowerArmFront.reachConstraints = SKReachConstraints(lowerAngleLimit: CGFloat(50).degreesToRadians(), upperAngleLimit: 160)
upperArmFront.reachConstraints = SKReachConstraints(lowerAngleLimit: CGFloat(-90).degreesToRadians(), upperAngleLimit: CGFloat(120).degreesToRadians())
lowerArmBack.reachConstraints = SKReachConstraints(lowerAngleLimit: CGFloat(50).degreesToRadians(), upperAngleLimit: 160)
upperArmBack.reachConstraints = SKReachConstraints(lowerAngleLimit: CGFloat(0).degreesToRadians(), upperAngleLimit: CGFloat(10).degreesToRadians())
*/
}
func punchAt(_ location: CGPoint) {
// 1
let punch = SKAction.reach(to: location, rootNode: upperArmFront, duration: 0.1)
/*
// 2
let restore = SKAction.run {
self.upperArmFront.run(SKAction.rotate(toAngle: self.upperArmAngleDeg.degreesToRadians(), duration: 0.1))
self.lowerArmFront.run(SKAction.rotate(toAngle: self.lowerArmAngleDeg.degreesToRadians(), duration: 0.1))
self.cricketBat.run(SKAction.rotate(toAngle: self.batAngleDeg.degreesToRadians(), duration: 0.1))
}
*/
fistFront.run(punch)
// 3
//fistFront.run(SKAction.sequence([punch, restore]))
}
// 3
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
touched = true
for touch: AnyObject in touches {
location = touch.location(in: self)
}
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches {
location = touch.location(in: self)
}
}