我将如何创造现实的驾驶体验？
我在将SpriteKit与iOS Swift 3结合使用时使用了applyForce函数，以在单击加油按钮时加速，并在制动时向PhysicsBody添加摩擦，我似乎也无法右转，也不知道如何执行此操作。
现在要转弯，我使用向左和向右转弯来拆分屏幕，但是我使用的是applyForce，但这很糟糕，因为当汽车停下来时，转弯会以一种不切实际的方式进行。
当我施加力时，它只会上升，因此，如果我创建了一个转向机构而又掉头了，那么汽车仍会上升。
另外请注意:多点触控不起作用？
有什么帮助吗？谢谢
override func didMove(to view: SKView) {
// Multi Touch
self.view?.isMultipleTouchEnabled = true
car.carNode.position = CGPoint(x: 0, y: 0)
car.carNode.physicsBody = SKPhysicsBody(rectangleOf: car.carNode.size)
car.carNode.physicsBody?.affectedByGravity = false
car.carNode.physicsBody?.angularDamping = 0.1
car.carNode.physicsBody?.linearDamping = 0.1
car.carNode.physicsBody?.friction = 0.1
car.carNode.physicsBody?.mass = 1
self.addChild(car.carNode)
// HUD Display
gas.gasButton.position = CGPoint(x: 300, y: -500)
self.addChild(gas.gasButton)
brake.brakeButton.position = CGPoint(x: 150, y: -500)
self.addChild(brake.brakeButton)
}
override func update(_ currentTime: TimeInterval) {
if touching {
car.carNode.physicsBody?.applyForce(CGVector(dx: 0, dy: 180))
}
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches {
let location = touch.location(in: self)
if location.x < self.frame.size.width / 2 {
// Left side of the screen
car.carNode.physicsBody?.applyForce(CGVector(dx: -100, dy: 0))
} else {
// Right side of the screen
car.carNode.physicsBody?.applyForce(CGVector(dx: 100, dy: 0))
}
// Gas Button
if (gas.gasButton.contains(location)) {
touching = true
}
// Brake Button
else if (brake.brakeButton.contains(location)) {
car.carNode.physicsBody?.friction = 1
}
}
}
最佳答案
评论的集成
for touch in touches {
let location = touch.location(in: self)
let velY = car.carNode.physicsBody?.velocity.dy
let factor:CGFloat = 100
let maxFactor:CGFloat = 300
//limit
let dxCalc = factor * velY > maxFactor ? maxFactor : factor * velY
if location.x < self.frame.size.width / 2 {
// Left side of the screen
car.carNode.physicsBody?.applyForce(CGVector(dx: -dxCalc, dy: 0))
} else {
// Right side of the screen
car.carNode.physicsBody?.applyForce(CGVector(dx: dxCalc, dy: 0))
}
// Gas Button
//etc
}
}