tictactoe.go

package main
import
(
"strings"
"fmt"
)
func mapper(letter string)int{
	if strings.TrimRight(letter, "\n") == "a" { return 0 }
	if strings.TrimRight(letter, "\n") == "b" { return 1 }
	if strings.TrimRight(letter, "\n") == "c" { return 2 }
	if strings.TrimRight(letter, "\n") == "d" { return 3 }
	if strings.TrimRight(letter, "\n") == "e" { return 4 }
	if strings.TrimRight(letter, "\n") == "f" { return 5 }
	if strings.TrimRight(letter, "\n") == "g" { return 6 }
	if strings.TrimRight(letter, "\n") == "h" { return 7 }
	if strings.TrimRight(letter, "\n") == "i" { return 8 }
	return 99
}
func bprinter (board [9]string){
	fmt.Println("The board now looks like this:")
	fmt.Println("-------")
	fmt.Println("|" + board[0] + "|" + board[1] + "|" + board[2] + "|")
	fmt.Println("|" + board[3] + "|" + board[4] + "|" + board[5] + "|")
	fmt.Println("|" + board[6] + "|" + board[7] + "|" + board[8] + "|")
	fmt.Println("-------")
	fmt.Println("")
}
func legendprinter (){
	fmt.Println("Here is the legend for you to make a mark:")
	fmt.Println("_______")
	fmt.Println("|a|b|c|\n|d|e|f|\n|g|h|i|")
	fmt.Println("_______")
}
func step1(board [9]string, player string) [9]string{
	boardpos := requestor(player)
	newboard := marker(board, player, boardpos)
	tflag := islistsame(board, newboard)
	if (tflag){
		fmt.Println("No change was made. The same player must make a valid selection. Player " + player + " please try again.")
		newboard = step1(board, player)
	}
	return newboard
}
func boardwinchecker(board [9]string) string{
  lastmessage := "nowinner"
  if board[0] == board[4] {
    if board[4] == board[8] {
      if board[4] != " " {
        lastmessage = "Player " + board[0] + " wins!"
        }
    }
  }
  if board[2] == board[4] {
    if board[4] == board[6] {
      if board[6] != " " {
        lastmessage = "Player " + board[2] + " wins!"
      }
    }
  }
  if board[0] == board[3] {
    if board[3] == board[6] {
      if board[6] != " " {
        lastmessage = "Player " + board[0] + " wins!"
      }
    }
  }
  if board[0] == board[1] {
    if board[1] == board[2] {
      if board[0] != " " {
        lastmessage = "Player " + board[0] + " wins!"
      }
    }
  }
  if board[2] == board[5] {
    if board[5] == board[8] {
      if board[2] != " " {
        lastmessage = "Player " + board[2] + " wins!"
      }
    }
  }
  if board[6] == board[7] {
    if board[7] == board[8] {
      if board[8] != " " {
        lastmessage = "Player " + board[6] + " wins!"
      }
    }
  }
  if board[1] == board[4] {
    if board[4] == board[7] {
      if board[1] != " " {
        lastmessage = "Player " + board[1] + " wins!"
      }
    }
  }
  if board[3] == board[4] {
    if board[4] == board[5] {
      if board[3] != " " {
        lastmessage = "Player " + board[3] + " wins!"
      }
    }
  }
return lastmessage
}
func marker(board [9]string, player string, position string) [9]string{
	x := mapper(position)
	if (board[x] != " "){
		fmt.Println("That square has already been marked.  Please try again.")
	}else{
		board[x] = player
	}
	return board
 }
func requestor(player string) string{
	fmt.Println("Player", player, "it is your turn.")
	fmt.Println("Please enter a letter for the square you want to mark (a through i):")
	var text string
	fmt.Scanln(&text)
	if strings.TrimRight(text, "\n") != "a"{
		if strings.TrimRight(text, "\n") != "b"{
			if strings.TrimRight(text, "\n") != "c"{
				if strings.TrimRight(text, "\n") != "d"{
					if strings.TrimRight(text, "\n") != "e"{
						if strings.TrimRight(text, "\n") != "f"{
							if strings.TrimRight(text, "\n") != "g"{
								if strings.TrimRight(text, "\n") != "h"{
									if strings.TrimRight(text, "\n") != "i"{
										fmt.Println("*** WARNING ***")
										fmt.Println("That was an invalid entry. Please try again player " + player)
										fmt.Println(" ")
										text = requestor(player)
									}
								}
							}
						}
					}
				}
			}
		}
	}
	return text
}
func islistsame(board1 [9]string, board2 [9]string) bool{
	var j = true
	for i := 0; i < 9; i++{
		if board1[i] == board2[i]{
		}else{
			j = false
		}
	}
	return j
}
func main(){
	var tttb [9]string
	tttb[0] = " "
	tttb[1] = " "
	tttb[2] = " "
	tttb[3] = " "
	tttb[4] = " "
	tttb[5] = " "
	tttb[6] = " "
	tttb[7] = " "
	tttb[8] = " "
	legendprinter()
	a := step1(tttb, "X")
	bprinter(a)
	b := step1(a, "O")
	bprinter(b)
	c := step1(b, "X")
	bprinter(c)
	d := step1(c, "O")
	bprinter(d)
	e := step1(d, "X")
	bprinter(e)
	legendprinter()
	be := boardwinchecker(e)
	if be == "nowinner"{
		f := step1(e, "O")
		bprinter(f)
		bf := boardwinchecker(f)
		if bf == "nowinner"{
			bprinter(f)
			g := step1(f, "X")
			bg := boardwinchecker(g)
			if bg == "nowinner"{
				bprinter(g)
				h := step1(g, "O")
				bh := boardwinchecker(h)
				if bh == "nowinner"{
					bprinter(h)
					i := step1(h, "X")
					bi := boardwinchecker(i)
					if bi == "nowinner"{
						legendprinter()
						lastmessage := "CAT's GAME. (TIE GAME.)"
						bprinter(i)
						fmt.Println(lastmessage)
					}else{
						bprinter(i)
						fmt.Println(bi)
					}
				}else{
					bprinter(h)
					fmt.Println(bh)
				}}else{
				bprinter(g)
				fmt.Println(bg)
			}}else{
			bprinter(f)
			fmt.Println(bf)
		}
	}else{
		bprinter(e)
		fmt.Println(be)
	}
}