Learning Swift™ Programming

Generating Barriers

You’ve already created the only external variables on which blockRunner depends. Now you can jump into the function itself:

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func blockRunner() {        for(block, blockStatus) in self.blockStatuses {            var thisBlock = self.childNodeWithName(block)            if blockStatus.shouldRunBlock() {                blockStatus.timeGapForNextRun = random()                blockStatus.currentInterval = 0                blockStatus.isRunning = true            }            if blockStatus.isRunning {                if thisBlock.position.x > blockMaxX {                    thisBlock.position.x -= CGFloat(self.groundSpeed)                }else {                    thisBlock.position.x = self.origBlockPositionX ...