Answer Key

Your final code should look something like this:

  import SwiftUI

  struct ContentView: View {
    var data = [
      [
       ["🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟧","🟩","🟩","🟩","🟩",
          "🟩", "🟩","🟩","🟩"],

       ["🟩","🟧","🟧","🟧","🟧","🟧","🟧","🟧","🟩","🟧","🟧","🟧",
          "🟧","🟧","🟧","🟩"],

       ["🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟧","🟩","🟩","🟩","🟩",
          "🟩","🟩","🟧","🟩"],

       ["🟩","🟧","🟧","🟧","🟧","🟧","🟩","🟧","🟧","🟧","🟧","🟧",
          "🟧","🟧","🟧","🟩"],

       ["🟩","🟧","🟩","🟩","🟩","🟧","🟩","🟩","🟩","🟩","🟩","🟩",
          "🟩","🟩","🟧","🟩"],

       ["🟩","🟩","🟩","🟩","🟩","🟧","🟧","🟧","🟧","🟧","🟧","🟧",
          "🟧","🟧","🟧","🟩"],

       ["🟩","🟧","🟧","🟧","🟧","🟧","🟩","🟩","🟩","🟩","🟧","🟩",
          "🟧","🟩","🟧","🟩"],

       ["🟩","🟧","🟩","🟩","🟩","🟧","🟩","🟧","🟧","🟧","🟧","🟩",
          "🟧","🟩","🟧","🟩"],

       ["🟩","🟧","🟧","🟧","🟩","🟧","🟩","🟩","🟩","🟩","🟩","🟩",
          "🟩","🟩","🟧","🟩"],

       ["🟩","🟩","🟩","🟧","🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟧",
          "🟧","🟧","🟧","🟩"],

       ["🟩","🟩","🟩","🥕","🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟩",
          "🟩","🟩","🟩","🟩"],
      ],
      [
       ["🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟩",
          "🟩","🟩","🟩","🟩"],

       ["🟩","🟧","🟧","🟧","🟧","🟧","🟧","🟧","🟩","🟧","🟧","🟧",
          "🟧","🟧","🟧","🟩" ],

       ["🟩","🟩","🟧","🟩","🟩","🟩","🟩","🟧","🟧","🟧","🟩","🟩",
          "🟩","🟩","🟧","🟧"],

       ["🟩","🟧","🟧","🟩","🟧","🟧","🟩","🟧","🟩","🟧","🟧","🟧",
          "🟩","🟧","🟧","🟩"],


       ["🟩","🟩","🟧","🟩","🟩","🟧","🟩","🟩","🟩","🟩","🟩","🟩",
          "🟩","🟩","🟧","🟩"],


       ["🟩","🟩","🟧","🟩","🟩","🟧","🟧","🟧","🟧","🟧","🟧","🟩",
          "🟧","🟧","🟧","🟩"],

       ["🟩","🟩","🟧","🟧","🟩","🟧","🟩","🟩","🟩","🟩","🟧","🟩",
          "🟧","🟩","🟩","🟩"],

       ["🥕","🟧","🟩","🟩","🟩","🟧","🟩","🟧","🟧","🟧","🟧","🟩",
          "🟧","🟧","🟧","🟩"],

       ["🟩","🟧","🟧","🟧","🟩","🟧","🟩","🟧","🟩","🟩","🟧","🟩",
          "🟩","🟩","🟧","🟩"],


       ["🟩","🟩","🟩","🟧","🟧","🟧","🟩","🟧","🟧","🟧","🟧","🟧",
          "🟧","🟧","🟧","🟩"],

       ["🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟩","🟩",
          "🟩","🟩","🟩","🟩"],
      ]
    ]

    @State var playerRow = 2
    @State var playerCol = 15
    @State var wonGame = false
    @State var carrotRow = 10
    @State var carrotCol = 3
    @State var currentMaze = 1
    var carrotLocations = [[10, 3], [7,0]]
    var playerLocations = [[0, 7], [3, 15]]

    func generateRow(col: [String], drawPlayer: Bool) -> Text {
      var textString = ""
      for colIndex in 0...col.count - 1 {
        if colIndex == playerCol && drawPlayer {
          textString += "🐰"
        } else {
          textString += col[colIndex]
        }
      }
      return Text(textString)
    }

    func isValidMove(row: Int, col: Int) -> Bool {
      let maze = data[currentMaze]
      return maze[row][col] == "🟧" || maze[row][col] == "🥕"
    }

    var body: some View {
      Spacer()
      VStack {
        ForEach(0..<data[currentMaze].count, id: \.self) { rowIndex in
          HStack {
            generateRow(col: data[currentMaze][rowIndex], drawPlayer:
              playerRow == rowIndex)
          }
        }
      }
      Spacer()
      HStack {
        Button {
          if playerRow > 0 {
            if (isValidMove(row: playerRow - 1, col: playerCol)) {
              playerRow -= 1
              wonGame = playerRow == carrotRow && playerCol == carrotCol
            }
          }
        } label: {
          Text("⬆️").font(.system(size: 50))
        }
        Button {
          let maze = data[currentMaze]
          if playerRow < maze.count - 1 {
            if (isValidMove(row: playerRow + 1, col: playerCol)) {
              playerRow += 1
              wonGame = playerRow == carrotRow && playerCol == carrotCol
            }
          }
        } label: {
          Text("⬇️").font(.system(size: 50))
        }
        Button {
          if playerCol > 0 {
            if (isValidMove(row: playerRow, col: playerCol - 1)) {
              playerCol -= 1
              wonGame = playerRow == carrotRow && playerCol == carrotCol
            }
          }
        } label: {
          Text("⬅️").font(.system(size: 50))
        }
        Button {
          let maze = data[currentMaze]
          if playerCol < maze[0].count - 1 {
            if (isValidMove(row: playerRow, col: playerCol + 1)) {
              playerCol += 1
              wonGame = playerRow == carrotRow && playerCol == carrotCol
            }
          }
        } label: {
          Text("➡️").font(.system(size: 50))
        }
     }
     .padding(.bottom)
     .alert("Congrats! You won!", isPresented: $wonGame) {
       Button("OK") {
         currentMaze += 1
         if currentMaze == data.count {
           currentMaze = 0
         }
         carrotRow = carrotLocations[currentMaze][0]
         carrotCol = carrotLocations[currentMaze][1]
         playerRow = playerLocations[currentMaze][0]
         playerCol = playerLocations[currentMaze][1]
       }
     }
     Spacer()
    }
  }