I've been learning how to code swift with "Develop in Swift" by Apple, and it has been great! However, I have a problem, I made a function, and it gives me an error on lines 78, 80, and 121. Can someone explain my error? Thank you for your time.
var barriers: [Shape] = []
let ball = OvalShape(width: 40, height:40)
let barrierWidth = 300.0
let barrierHeight = 25.0
let barrierPoints = [
Point(x:0, y:0),
Point(x:0, y:barrierHeight),
Point(x:barrierWidth, y:barrierHeight),
Point(x:barrierWidth, y:0)
]
let barrier = PolygonShape(points:barrierPoints)
let funnelPoints = [
Point(x:0, y:50),
Point(x:80, y:50),
Point(x:60, y:0),
Point(x:20, y:0)
]
let funnel = PolygonShape(points:funnelPoints)
let targetPoints=[
Point(x:10, y:0),
Point(x:0, y:10),
Point(x:10, y:20),
Point(x:20, y:10)
]
let target = PolygonShape(points:targetPoints)
func setUpTarget(){
target.position = Point(x:200, y:400)
target.hasPhysics = true
target.isImmobile = true
target.isImpermeable = false
target.fillColor = .yellow
target.name = "Target"
//target.isDraggable = false
scene.add(target)
}
/*
The setup() function is called once when the app launches. Without it, your app won't compile.
Use it to set up and start your app.
You can create as many other functions as you want, and declare variables and constants,
at the top level of the file (outside any function). You can't write any other kind of code,
for example if statements and for loops, at the top level; they have to be written inside
of a function.
*/
fileprivate func setUpBall() {
ball.position = Point(x: 250, y:400)
scene.add(ball)
ball.hasPhysics = true
ball.fillColor = .blue
ball.onCollision = ballCollided(with:)
ball.isDraggable = false
scene.trackShape(ball)
ball.onExitedScene = ballExitedScene
ball.onTapped = resetGame
ball.bounciness = 0.6
}
fileprivate func addBarrier(at position: Point, width: Double, height: Double, angle: Double){
//Add a barrier to the scene.
let barrierPoints = [
Point:(x: 0, y: 0),
Point:(x: 0, y: height),
Point(x: width, y: height),
Point(x: width, y: 0)
]
let barrier = PolygonShape(points:barrierPoints)
barrier.append(barrier)
barrier.position = Point(x:200, y:150)
barrier.hasPhysics = true
scene.add(barrier)
barrier.isImmobile = true
barrier.angle = 0.1
}
fileprivate func setUpFunnel() {
//Adds a funnel to the scene
funnel.position = Point(x:200, y:scene.height - 25)
scene.add(funnel)
funnel.onTapped = dropBall
funnel.isDraggable = false
}
func ballCollided(with otherShape: Shape){
if otherShape.name != "Target"{return}
otherShape.fillColor = .green
}
func ballExitedScene (){
barrier.isDraggable = true
}
func resetGame (){
ball.position = Point(x:0, y:-80)
}
func printPosition(of shape: Shape){
print(shape.position)
}
func setup() {
setUpBall()
addBarrier()
setUpFunnel()
setUpTarget()
resetGame()
scene.onShapeMoved = printPosition(of:)
}
func dropBall() {
ball.position = funnel.position
ball.stopAllMotion()
barrier.isDraggable = false
}
