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)
		}
	}