本人新手，从上周五接触pad上的playgrounds应用后纯当解谜游戏在玩却一发不可收。
开始了解这门语言，并决定先攻破这三个疗程。
苦于缺少一些同好一起交流指正更优解题方案，故想在此开帖更新各关卡代码，欢迎大家一起交流。
由于之前的关卡过于简单，我直接从第一个疗程while里的富饶之地开始。

【富饶之地】
func backAround() {
turnLeft()
turnLeft()
moveForward()
moveForward()
turnRight()
}
while !isBlocked {
moveForward()
turnRight()
for i in 1 ... 3 {
if isOnClosedSwitch {
toggleSwitch()
moveForward()
} else if isOnOpenSwitch {
moveForward()
} else if isOnGem {
collectGem()
moveForward()
}
}
backAround()
}

【征服迷宫】
func navigateAroundWall() {
if isBlockedRight && !isBlocked {
moveForward()
} else if isBlocked && isBlockedRight {
turnLeft()
} else {
turnRight()
moveForward()
}
}
while !isOnGem {
navigateAroundWall()
}
collectGem()

【左转还是右转?】
func go() {
if isOnClosedSwitch && !isBlocked {
toggleSwitch()
turnRight()
moveForward()
} else if isOnClosedSwitch && isBlocked {
toggleSwitch()
turnLeft()
moveForward()
} else {
moveForward()
}
}
while !isOnGem {
go()
}
collectGem()

【向左走，向右走】
func getGem() {
if isOnGem {
collectGem()
moveForward()
} else if isBlocked {
turnLeft()
moveForward()
turnLeft()
} else {
moveForward()
}
}
func changeSwitch() {
if isOnClosedSwitch {
toggleSwitch()
moveForward()
} else if isBlocked {
turnRight()
moveForward()
turnRight()
} else {
moveForward()
}
}
moveForward()
turnRight()
while !isOnOpenSwitch {
while !isOnClosedSwitch && !isOnOpenSwitch {
getGem()
}
while !isOnGem && !isOnOpenSwitch {
changeSwitch()
}
}

密切关注，我也闯关中

见闺蜜男友之前先看过照片，感觉一般，闺蜜解释是他不上相的缘故。今天见到本人，比照片还丑好些，闺蜜问观后感。不好伤她自尊心，憋了半天，感慨道：其实他挺上相的。

我卡在第二章第五关“随机宝石遍布各处”

【三颗宝石，四个开关】
var numOfGem = 0
var numOfSwitch = 0
var numOfBlocked = 0
while numOfGem < 3 || numOfSwitch < 4{
if isOnGem && numOfGem < 3 {
collectGem()
numOfGem = numOfGem + 1
moveForward()
} else if numOfBlocked == 2 {
turnLeft()
turnLeft()
moveForward()
numOfBlocked = 99
} else if isOnClosedSwitch {
toggleSwitch()
numOfSwitch = numOfSwitch + 1
} else if isBlocked {
turnRight()
moveForward()
numOfBlocked = numOfBlocked + 1
} else {
moveForward()
}
}

【检查等值】
let switchCounter = 5
var gemCount = 0
while gemCount < 5 {
if isOnGem {
collectGem()
gemCount = gemCount + 1
moveForward()
} else if isBlocked {
turnRight()
moveForward()
} else {
moveForward()
}
}

【清点开关】
var gemCount = 0
var switchCount = 0
for i in 1 ... 9 {
if isOnGem {
collectGem()
gemCount += 1
moveForward()
} else if isBlocked {
turnRight()
} else {
moveForward()
}
}
while switchCount < gemCount {
if isOnClosedSwitch {
toggleSwitch()
switchCount += 1
moveForward()
} else if isBlocked {
turnRight()
} else {
moveForward()
}
}

【收集指定总数】
let totalGems = randomNumberOfGems
var gemCount = 0
while gemCount != totalGems {
for i in 1 ... 5 {
if isOnGem {
collectGem()
gemCount += 1
moveForward()
} else if isBlocked {
turnRight()
} else {
moveForward()
}
}
for i in 1 ... 5 {
if isOnGem {
collectGem()
gemCount += 1
moveForward()
} else if isBlocked {
turnLeft()
} else {
moveForward()
}
}
}

【设定
正确的
传送门】
var gemCount = 0
while gemCount<4 {
if gemCount == 1 {
bluePortal.isActive = false
} else if gemCount == 2 {
bluePortal.isActive = true
pinkPortal.isActive = false
} else if gemCount == 3 {
pinkPortal.isActive = true
}
if isOnGem {
collectGem()
gemCount += 1
moveForward()
} else if isBlocked {
turnRight()
turnRight()
moveForward()
} else {
moveForward()
}
}

【随机宝石遍布各处】
let totalGems = randomNumberOfGems
var gemCount = 0
pinkPortal.isActive = false
bluePortal.isActive = false
func turnAround() {
getGem()
turnLeft()
turnLeft()
moveForward()
}
func getGem() {
if isOnGem {
collectGem()
gemCount += 1
moveForward()
} else {
moveForward()
}
}
while gemCount != totalGems {
for i in 1 ... 3 {
getGem()
}
turnRight()
moveForward()
turnAround()
moveForward()
turnAround()
turnRight()
pinkPortal.isActive = true
bluePortal.isActive = true
moveForward()
pinkPortal.isActive = false
bluePortal.isActive = false
getGem()
getGem()
turnAround()
moveForward()
moveForward()
getGem()
turnAround()
pinkPortal.isActive = true
bluePortal.isActive = true
moveForward()
pinkPortal.isActive = false
bluePortal.isActive = false
}

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