ios - Swift / SpriteKit help: Increase CGFloat continuously to allow continuous rotation around a fixed point -

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im making simple game apple's spritekit , swift , have encountered problem. im trying paddle node (paddle) rotate continuously around fixed node (anchornode) inside circle; however, cannot figure out how make paddle node (paddle) keep rotating around fixed point node (anchornode) because of constrains in skaction.rotatebyangle statement making end after amount of time / rotation.

any appreciated!

here code reference:

    //setting anchor node      anchornode.position = cgpointmake(cgrectgetmidx(self.frame), cgrectgetmidy(self.frame))     anchornode.size.height = (self.frame.size.height / 1000)     anchornode.size.width = anchornode.size.height     self.addchild(anchornode)       //setting achor node's physucs      anchornode.physicsbody = skphysicsbody(circleofradius: (circle.frame.size.height / 1000))     anchornode.physicsbody?.dynamic = false     anchornode.physicsbody?.affectedbygravity = false     anchornode.physicsbody?.friction = 0       //making anchor node rotate      let rotate = skaction.rotatebyangle(cgfloat(3.14), duration: nstimeinterval(1.5))     anchornode.runaction(rotate)        //setting paddle node      paddle.position = cgpointmake((circle.frame.width / 2), 0)     paddle.size.height = (self.frame.size.height / 50)     paddle.size.width = (self.frame.size.width / 7)      anchornode.addchild(paddle)

try adding code.

override func update(currenttime: nstimeinterval) { //how make spin let speed = cgfloat(5) let degreerotation = cdouble(speed) * m_pi / 180 paddle.zrotation -= cgfloat(degreerotation) }

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