2つの山＠コードを学ぼう2

//2つの山＠コードを学ぼう2
let totalGems = randomNumberOfGems

let a = Expert()
let b = Character()
var gem = 0

world.place(a, facing: north, atColumn: 1, row: 4)
world.place(b, facing: north, atColumn: 3, row: 0)

func jumpToEdge() {
    for i in 1 ... 6 {
        if b.isOnGem && gem < totalGems {
            b.collectGem()
            gem += 1
        }
        if b.isBlocked {
            b.jump()
        } else {
            b.moveForward()
        }
    }
}
a.turnLock(up: true, numberOfTimes: 1)


while gem != totalGems {
    jumpToEdge()
    if b.isBlockedLeft && b.isBlockedRight {
        b.turnLeft()
        b.turnLeft()
    } else if b.isBlockedLeft {
        b.turnRight()
        b.moveForward()
        b.turnRight()
    } else if b.isBlockedRight {
        b.turnLeft()
        b.moveForward()
        b.turnLeft()
    }
}