sprite-kit collision not working - sprite-kit

Question

Hi everyone I am trying to make a basic line drawing test with xcode 6 using swift. But my collision system isn't working at all. This is the code of my collision system:
func drawLines() {
CGPathMoveToPoint(path, nil, location.x, location.y)
CGPathAddLineToPoint(path, nil, self.frame.size.width/2, self.frame.size.height / 5)
drawLine.append(SKShapeNode())
drawLine[index] = SKShapeNode()
line.append(drawLine[index])
line[index].path = path
line[index].strokeColor = UIColor.redColor()
line[index].lineWidth = 5.0
line[index].physicsBody = SKPhysicsBody(rectangleOfSize: line[index].frame.size)
line[index].physicsBody.dynamic = false
line[index].zPosition = 1
self.addChild(line[index])
index++
}
I can't figure out the problem but I think I made a mistake in that piece of code.
Here is the rest of my code:
class GameScene: SKScene {
var line: [SKShapeNode] = []
var drawLine: [SKShapeNode] = []
var path = CGPathCreateMutable()
var touch: UITouch!
var location:CGPoint!
var index = 0
let player = SKSpriteNode(imageNamed: "player")
override func didMoveToView(view: SKView) {
player.position = CGPointMake(self.frame.size.width / 2, self.frame.size.height / 2)
player.physicsBody = SKPhysicsBody(rectangleOfSize: player.size)
player.physicsBody.dynamic = true
self.physicsWorld.gravity = CGVectorMake(0,-1)
player.zPosition = 1
self.addChild(player)
}
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
/* Called when a touch begins */
touch = touches.anyObject() as UITouch!
location = touch.locationInNode(self)
drawLines()
}
func drawLines() {
CGPathMoveToPoint(path, nil, location.x, location.y)
CGPathAddLineToPoint(path, nil, self.frame.size.width/2, self.frame.size.height / 5)
drawLine.append(SKShapeNode())
drawLine[index] = SKShapeNode()
line.append(drawLine[index])
line[index].path = path
line[index].strokeColor = UIColor.redColor()
line[index].lineWidth = 5.0
line[index].physicsBody = SKPhysicsBody(rectangleOfSize: line[index].frame.size)
line[index].physicsBody.dynamic = false
line[index].zPosition = 1
self.addChild(line[index])
index++
}
override func update(currentTime: CFTimeInterval) {
/* Called before each frame is rendered */
}
-------------------EDIT -------------------
I now use this line of code for the physics of my line:
line[index].physicsBody = SKPhysicsBody(rectangleOfSize:
CGSizeMake(line[index].frame.width*2 ,line[index].frame.height*2))
This problem here I think is that when I draw my line at an angle the rectangle doesn't turn with it so my rectangle ends up way to big.

Answer 1

As far as I know, touchesBegan returns an NSSet of touches (an array of touches roughly saying), therefore you would want to loop through them or access a specific touch by its index. I would recommend looping through touches like the following code.
override func touchesBegan(touches:NSSet) {
for touch: AnyObject in touches {
var location:CGPoint = touch.locationInNode(self.scene)
performSomethingCrazy(withLocationAt: location)
}
}
Enjoy.