Question

我的应用内有更多问题。我的错误就像标题所说：

Swift编译器错误。

ERROR1：＆＃39; CGFloat的＆＃39;不能转换为＆＃39; Float＆＃39;

第1和第2错误的代码：

self.setPositionRelativeBot(pipeBot, x: xx, y: offset)
self.setPositionRelativeTop(pipeTop, x: xx, y: offset + space)

这是整个功能：

func spawnPipeRow(offs: Float)
    {
        let offset = offs - space / 2

        let pipeBot = mainPipe.copy() as Pipe
        let pipeTop = mainPipe.copy() as Pipe

        pipeBot.texture = SKTexture(imageNamed: "BotPipe")
        pipeTop.texture = SKTexture(imageNamed: "TopPipe")

        pipeBot.texture!.filteringMode = SKTextureFilteringMode.Nearest
        pipeTop.texture!.filteringMode = SKTextureFilteringMode.Nearest

        pipeBot.isBottom = true

        let xx = self.view!.bounds.size.width

        self.setPositionRelativeBot(pipeBot, x: xx, y: offset)
        self.setPositionRelativeTop(pipeTop, x: xx, y: offset + space)

        pipeBot.physicsBody = SKPhysicsBody(rectangleOfSize: pipeBot.size)
        pipeTop.physicsBody = SKPhysicsBody(rectangleOfSize: pipeTop.size)

        pipeBot.physicsBody!.dynamic = false
        pipeTop.physicsBody!.dynamic = false

        pipeBot.physicsBody!.contactTestBitMask = birdCategory
        pipeTop.physicsBody!.contactTestBitMask = birdCategory

        pipeBot.physicsBody!.collisionBitMask = birdCategory
        pipeTop.physicsBody!.collisionBitMask = birdCategory

        pipes.append(pipeBot)
        pipes.append(pipeTop)

        self.addChild(pipeBot)
        self.addChild(pipeTop)
    }

Swift编译器错误。

ERROR1：＆＃39;浮动＆＃39;与＆＃39; UInt8＆＃39;

第一个错误的代码：

vel -= 85 - (self.view!.bounds.size.height - bird.position.y)

误差2：＆＃39; SKPhysicsBody＆＃39？;没有名为＆＃39; velocity＆＃39;

第二个错误的代码：

bird.physicsBody.velocity = CGVectorMake(0, vel)

这是整个功能：

override func touchesBegan(touches: NSSet, withEvent event: UIEvent)
    {
        if (!bird.physicsBody!.dynamic)
        {
            //First touch

            self.spawnPipeRow(0)

            bird.physicsBody!.dynamic = true

            bird.physicsBody!.velocity = CGVectorMake(0, 175)

            scoreLabel.hidden = false

            isMoving = true
        } else if (isMoving)
        {
            var vel: Float = 200

            if (self.view!.bounds.size.height - bird.position.y < 85)
            {
                vel -= 85 - (self.view!.bounds.size.height - bird.position.y)
            }

            bird.physicsBody.velocity = CGVectorMake(0, vel)
        } else
        {
            overlay.removeFromParent()

            for pi in pipes
            {
                pi.removeFromParent()
            }

            pipes.removeAll(keepCapacity: false)

            score = 0

            bird.physicsBody!.dynamic = false
            bird.position = CGPoint(x: 150, y: view!.bounds.size.height / 2 - 10)

            scoreLabel.hidden = true

            isGroundMoving = true
        }
    }

Swift编译器错误。

ERROR1：＆＃39; CGFloat的＆＃39;与＆＃39; UInt8＆＃39;

第1和第2错误的代码（两行都相同）：

ground1.position.x -= movingSpeed
ground2.position.x -= movingSpeed

误差2：无法调用＆＃39; - =＆＃39;使用类型＆＃39;（@ lvalue CGFloat，$ T9）的参数列表＆＃39;

第3和第4个错误的代码（两行都相同）：

background1.position.x -= movingSpeed / 3
background2.position.x -= movingSpeed / 3

误差3：＆＃39; CGFloat的＆＃39;与＆＃39; UInt8＆＃39;

pipe.position.x -= movingSpeed

这是整个功能：

override func update(currentTime: CFTimeInterval)
    {
        if (isGroundMoving)
        {
            ground1.position.x -= movingSpeed
            ground2.position.x -= movingSpeed

            if (ground1.position.x <= -self.view!.bounds.size.width / 2)
            {
                ground1.position.x = self.view!.bounds.size.width * 1.5 - 2
            }

            if (ground2.position.x <= -self.view!.bounds.size.width / 2)
            {
                ground2.position.x = self.view!.bounds.size.width * 1.5 - 2
            }

            background1.position.x -= movingSpeed / 3
            background2.position.x -= movingSpeed / 3

            if (background1.position.x <= -self.view!.bounds.size.width / 2)
            {
                background1.position.x = self.view!.bounds.size.width * 1.5 - 2
            }

            if (background2.position.x <= -self.view!.bounds.size.width / 2)
            {
                background2.position.x = self.view!.bounds.size.width * 1.5 - 2
            }

            if (isMoving)
            {
                for (var i = 0; i < pipes.count; i++)
                {
                    let pipe = pipes[i]

                    if (pipe.position.x + (pipe.size.width / 2) < 0)
                    {
                        pipe.removeFromParent()

                        continue
                    }

                    if (pipe.position.x + (pipe.size.width / 2) < self.view!.bounds.size.width / 2 && pipe.isBottom && !pipe.pointAdded)
                    {
                        score++

                        pipe.pointAdded = true
                    }

                    pipe.position.x -= movingSpeed

                    if (i == pipes.count - 1)
                    {
                        if (pipe.position.x < self.view!.bounds.width - pipe.size.width * 2.0)
                        {
                            self.spawnPipeRow(self.randomOffset())
                        }
                    }
                }

                scoreLabel.text = "Score: \(score)"
            }
        }
    }

我希望你们中的一些人可以为我解决这个问题，因为我不能：）

Answer 1

错误1：使用CGFloat代替Float。例如：

var vel: CGFloat = 200

错误2：physicsBody是可选的（可以是nil），因此在引用?.之前使用velocity运算符有条件地解包它：

bird.physicsBody?.velocity = CGVectorMake(0, vel)

您的所有错误似乎都是由这两个问题之一引起的。例如，spawnPipeRow的参数再次为offs: Float而不是CGFloat。我怀疑您在所提供的代码段中未声明的值也是如此，例如space或movingSpeed。

要了解CGFloat是什么，按住Command键点击它 - 这会转到CoreGraphics API，您可以在其中读取CGFloat是“本机类型...”浮动在32位体系结构上，在64位体系结构上使用Double。“

此外，在修改?时，我倾向于使用!而不是physicsBody，因为如果physicsBody为零，后者将会崩溃。

'CGFloat'不能转换为'Float'和更多

1 个答案: