Swift倉庫・SKActionでCJumpTo

【CJumpToアニメーション】

簡単なJumpToを書いてみました。これにジャンプ目的地までの間に何回ジャンプするのかなどCocos2DのCCJumpTo、CCJumpBy的な機能をかければと思っています。

CJumpTo.swift

import SpriteKit

class CJumpTo: SKNode {

    init(sprite: SKSpriteNode, targetPoint: CGPoint, height: CGFloat, duration: NSTimeInterval) {
        super.init()

        let startPoint = sprite.position

        var bezierPath: UIBezierPath = UIBezierPath()
        bezierPath.moveToPoint(startPoint)
        var controlPoint: CGPoint = CGPoint()
        controlPoint.x = startPoint.x + (targetPoint.x - startPoint.x)/2
        controlPoint.y = startPoint.y + height
        bezierPath.addQuadCurveToPoint(targetPoint, controlPoint: controlPoint)

        let jumpAction = SKAction.followPath(bezierPath.CGPath, asOffset:false, orientToPath:false, duration: 0.2)
        jumpAction.timingMode = .EaseIn
        let scaleA = SKAction.scaleTo(1.2, duration: 0.1)
        let scaleB = SKAction.scaleTo(1.0, duration: 0.1)
        let scaleSequence = SKAction.sequence([scaleA,scaleB])
        let sequence = SKAction.group([jumpAction, scaleSequence])
        sprite.runAction(sequence)
    }
}

使用例

    override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
        for touch: AnyObject in touches {
            let location = touch.locationInNode(self)
            let previousLocation = touch.previousLocationInNode(self)

            CJumpTo(sprite: theSprite, targetPoint: location, height: 50, duration: 1.0)
        }
    }

【CJumpTo・iOS/OSX対応】

OSXとiOSの両側で使えるバージョンも作ってみました。

CJumpTo.swift

import SpriteKit

class CJumpTo: SKNode {

    init(sprite: SKSpriteNode, targetPoint: CGPoint, height: CGFloat, duration: NSTimeInterval) {
        super.init()

        let startPoint = sprite.position
        var finalPath: CGPath!

        var controlPoint = CGPoint()
        controlPoint.x = startPoint.x + (targetPoint.x - startPoint.x)/2
        controlPoint.y = startPoint.y + height

        #if os(iOS)

            // iOS Support
            let bezierPath: UIBezierPath = UIBezierPath()
            bezierPath.moveToPoint(startPoint)
            bezierPath.addQuadCurveToPoint(targetPoint, controlPoint: controlPoint)
            finalPath = bezierPath.CGPath

            #else

            // OSX Support
            var path = CGPathCreateMutable()
            CGPathMoveToPoint(path, nil, startPoint.x, startPoint.y)
            CGPathAddQuadCurveToPoint(path, nil, controlPoint.x, controlPoint.y, targetPoint.x, targetPoint.y)
            finalPath = path

        #endif

        let jumpAction = SKAction.followPath(finalPath, asOffset:false, orientToPath:false, duration: duration)
        jumpAction.timingMode = .EaseIn
        let scaleA = SKAction.scaleTo(1.3, duration: (duration/4)*3)
        let scaleB = SKAction.scaleTo(1.0, duration: (duration/4)*1)
        let scaleSequence = SKAction.sequence([scaleA,scaleB])
        let sequence = SKAction.group([jumpAction, scaleSequence])
        sprite.runAction(sequence)

    }
}

使用例

    override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
        for touch: AnyObject in touches {
            let location = touch.locationInNode(self)
            let previousLocation = touch.previousLocationInNode(self)

            CJumpTo(sprite: theSprite, targetPoint: location, height: 50, duration: 1.0)
        }
    }