console minesweeper in go lang

minesweeper in golang

package main

import (
	"fmt"
	"math/rand"
	"time"
	"strconv"

)


func main(){
	fmt.Println("hello")

	game_ended := false

	rand.Seed( time.Now().UTC().UnixNano())

	var row, col, mines int
	fmt.Print("enter rows cols and mines: ")
	fmt.Scan(&row, &col, &mines)


	ui_field :=  make([][]string, row)
	for i := range ui_field {
		ui_field[i] = make([]string, col)
	}

	for i := 0; i < row; i++ {
		for j := 0; j < col; j++ {
			ui_field[i][j] = "x"
		}
	} // field visible to user

	ary := make([][]int, row)
	for i := range ary {
		ary[i] = make([]int, col)
	} //field with real data

	total_mines := 0

	//filling field with mines. Mines marked with -1
	for i := 0; i < row; i++ {
		for j := 0; j < col; j++ {
			if total_mines < mines {
				x,y := rand.Intn(row), rand.Intn(col)
				if ary[x][y] != -1{
					ary[x][y] = -1
					total_mines ++
				}
			}
		}
	}
	
	//this probably needs to be refactored, but have no idea how
	for i := 0; i < row; i++ {
		for j := 0; j < col; j++ {
			if ary[i][j] == -1 {
				for k := max(0, i - 1); k <= min(row - 1, i + 1); k++ {
					for l := max(0, j - 1); l <= min(col - 1, j + 1); l++ {
						if ary[k][l] != -1 {
							ary[k][l] ++
						}
					}
				}
			}
		}
	}

	x, y := 0, 0

	for (game_ended == false) {
		fmt.Println("enter coordinates for next open")
		fmt.Scan(&x, &y)

		if x > row || y > col {
			fmt.Println("Entered coordinates not in range of field, try again")
			continue
		}
		if ary[x][y] != -1 {
			ui_field[x][y] = strconv.Itoa(ary[x][y])
			for _, i := range ui_field {
				fmt.Println(i);
			}
		} else {
			fmt.Println("you have exploded")
			game_ended = true
			for _, i := range ary {
				fmt.Println(i);
			}
		}
	}



}

func max(x, y int) int {
	if x > y {
		return x
		}
	return y
	}

func min(x, y int) int {
	if x < y {
		return x
	}
	return y
}