Question

所以，它非常像这样：我有这个有效的手势识别器，下面是GameViewController类中的代码：

Option Explicit

dim cn, cmDB, rs
set cn = CreateObject("ADODB.Connection")  

cn.ConnectionString= "DSN=PostgreSQLDsn" 
cn.open 
cn.CommandTimeout = 28800
Set cmDB = CreateObject("ADODB.Command")
cmDB.CommandTimeout = 28800

set rs = CreateObject("ADODB.recordset")
rs.CursorType = 2

msgbox "disconnected internet here then clicked ok to proceed"    

set cn = TestReOpenConnection(cn,"DSN=PostgreSQLDsn",28800,2,100)

if cn is nothing then
    msgbox "not good"
    WScript.Quit
end if

set rs = cn.execute("select * from test;")
msgbox "all good: " & rs.fields("x")

WScript.Quit

function TestReOpenConnection(cn,sDsn,iConnTimeOut,iWaitSecs,iTimesToTry)

    dim iWaitMilSecs 
    iWaitMilSecs = iWaitSecs * 1000
    dim bConnected  
    bConnected = false
    dim iTries
    iTries = 0
    dim rsTest
    set rsTest = CreateObject("ADODB.recordset")

    do while bConnected = false 

        On Error Resume Next

        Set rsTest = cn.execute("select 1;")
        If Err Then

            if iTries <> 0 then
                WScript.Sleep iWaitMilSecs 'if we tried once already, then wait 
            end if

            cn.Close
            set cn = CreateObject("ADODB.Connection")  
            cn.ConnectionString= sDsn

            On Error Resume Next
            cn.open 
            cn.CommandTimeout = iConnTimeOut
        else

            bConnected = true
            set TestReOpenConnection = cn
        End If
        iTries = iTries + 1
        if iTries > iTimesToTry then
            set TestReOpenConnection = nothing
            exit do
        end if
    loop

end function

我正在调用的函数在GameScene类中，它看起来像这样：

INSERT FILE

我在更新功能上也有一个计时器，这样每隔一段时间，就会产生一个球。点击屏幕时，球也必须产生。这是代码：

@IBAction func handleTap(_ sender: UITapGestureRecognizer) 
{
    GameScene().makeCirc();
}

然而，输出有点奇怪。没有点击，输出是circCount，它通常是一个常数12，这应该是它应该是的。但是，当我点击时，显示的circCount为0，而不是产生球并使circCount 13+，但是，所有对象仍然在屏幕上。

无论如何在没有circCount为0的情况下从另一个类产生球？谢谢！

编辑：这是viewDidMove函数，如果它有帮助：

public func makeCirc() {

    circle = SKShapeNode (circleOfRadius: 15)
    circle.name = "white circ"
    circle.position = CGPoint (x: 0, y: 10)
    circle.fillColor = .white
    circle.physicsBody = SKPhysicsBody(circleOfRadius: 15)

    circle.physicsBody?.isDynamic = true
    circle.physicsBody?.affectedByGravity = false
    circle.physicsBody?.linearDamping = 0
    circle.physicsBody?.restitution = 1.0
    circle.physicsBody?.allowsRotation = true
    circle.physicsBody?.mass = 300
    circle.physicsBody?.density = 2*3.14*15/(circle.physicsBody?.mass)!
    circle.physicsBody?.angularDamping = 0.0

    self.addChild(circle)
    circle.physicsBody?.applyImpulse(CGVector(dx: 0.0, dy:1.0))
    print(circCount)
    circCount += 1
}

Answer 1

好吧，所以我在完成下面的工作后完成了所有工作。谢谢你的帮助！

let scene = GKScene (fileNamed: "GameScene")
var instance = GameScene()
override func viewDidLoad() {
    super.viewDidLoad()
    let sceneNode = scene?.rootNode as! GameScene?
    // Load 'GameScene.sks' as a GKScene. This provides gameplay related content
    // including entities and graphs.

    let tapGesture = UITapGestureRecognizer.init(target: self, action: #selector(handleTap(_:)))
    self.view.addGestureRecognizer(tapGesture)
    self.view.isUserInteractionEnabled = true
        // Get the SKScene from the loaded GKScene
        // Set the scale mode to scale to fit the window
            sceneNode?.scaleMode = .aspectFill
            instance = (sceneNode)!
            // Present the scene
            if let view = self.view as! SKView? {
                view.presentScene(sceneNode)
                view.ignoresSiblingOrder = true
                view.showsFPS = true
                view.showsNodeCount = true


    }
}

从另一个类创建对象时，对象不会生成

1 个答案: