MazeExplorer_MazeClass

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;

namespace InClassThursNov21_01
{
    class Maze
    {
        //class attributes
        private const int SIZE = 20;
        private char[,] coords = new char[SIZE, SIZE];
        private Random randNum = new Random();
        private const int numMaps = 3; //total number of maps in the game
        private const int levelIncrement = 5; //level-up difficulty increment
        private int treasureFreq = 5; //lower treasureFreq will mean more treasures created
        private int pointsToLevelUp = 20; //sets the number of points needed to get to the next level
        public int score;
        public int moves;
        private int randomValue;
        private int currentLevel;
        
        //constructor
        public Maze(int level)
        {
            Load(level);
        }

        //load the level from a file
        private void Load(int levelNum)
        {
            currentLevel = levelNum;
            string fileName = "level" + levelNum + ".txt";
            StreamReader reader = new StreamReader(fileName);
            
            for (int row = 0; row < SIZE; row++) //loop through the rows of the file
            {
                if (reader.EndOfStream) break; //error handling
                
                string line = reader.ReadLine();

                for (int col = 0; col < SIZE; col++) //loop through every char in the line
                {
                    coords[col, row] = line[col];
                }
            }
            reader.Close();
        }

        //draw the maze
        public void Draw(Hero hero)
        {
            Header();
            for (int row = 0; row < SIZE; row++)
            {
                for (int col = 0; col < SIZE; col++)
                {
                    if (hero.GetX() == col && hero.GetY() == row)
                    {
                        AddNewTreasure();

                        Console.ForegroundColor = ConsoleColor.Magenta;
                        Console.Write("&");
                        Console.ForegroundColor = ConsoleColor.Gray;
                    }
                    else if (coords[col, row] == '$')
                    {
                        Console.ForegroundColor = ConsoleColor.Green;
                        Console.Write("$");
                        Console.ForegroundColor = ConsoleColor.Gray;
                    }
                    else { Console.Write(coords[col, row]); }
                 }
                
                Console.WriteLine();
            }

            DisplayGameInfo();            
            LevelUp(hero);
        }

        //deisplays the header
        private void Header()
        {
            Console.ForegroundColor = ConsoleColor.White;
            Console.Write("Treasure Hunter ");
            Console.ForegroundColor = ConsoleColor.Yellow;
            Console.WriteLine("L: " + currentLevel);
            Console.ForegroundColor = ConsoleColor.Gray;
        }
        
        //displays relevant game information
        private void DisplayGameInfo()
        {
            //Console.ForegroundColor = ConsoleColor.Yellow;
            //Console.WriteLine("Level: " + currentLevel);
            Console.ForegroundColor = ConsoleColor.Green;
            Console.WriteLine("\tTreasure: $" + score);
            Console.ForegroundColor = ConsoleColor.Gray; 
        }

        //check if a new treasure should spawn in a random spot
        private void AddNewTreasure()
        {
            int numMoves = randNum.Next(0, treasureFreq);

            int xCoord = randNum.Next(0, SIZE);
            int yCoord = randNum.Next(0, SIZE);
            
            if (PointIsAlsoFree(xCoord, yCoord) && moves == (moves + numMoves))
            {
                coords[xCoord, yCoord] = '$';
            }
        }

        //checks if it's time to move to a new maze
        public void LevelUp(Hero hero)
        {
            if (currentLevel < numMaps && score >= pointsToLevelUp)
            {
                TripleTone(1);
                Console.ForegroundColor = ConsoleColor.Yellow;
                Console.Write("Moving up a level... Press any key to continue");
                Console.ForegroundColor = ConsoleColor.Gray;
                
                currentLevel += 1;
                treasureFreq += levelIncrement; //treasures spawn less frequently in the next level
                pointsToLevelUp *= 2; //raise the points needed to move up in the next level
                hero.ResetHero();
                Load(currentLevel);
            }
            else if (currentLevel >= numMaps && score >= pointsToLevelUp)
            {
                Console.Clear();
                Console.Write("You won in ");
                Console.ForegroundColor = ConsoleColor.Yellow;
                Console.Write(moves);
                Console.ForegroundColor = ConsoleColor.Gray;
                Console.Write(" moves with a final treasure value of ");
                Console.ForegroundColor = ConsoleColor.Green;
                Console.Write(score);
                Console.ForegroundColor = ConsoleColor.Gray;
                Console.WriteLine("!");
                Console.Write("Press [Enter] to close the game... ");
                TripleTone(3);
                Console.ReadLine();
                Environment.Exit(0);
            }
        }

        private void TripleTone(int n)
        {
            for (int i = 0; i < n; i++)
            {
                Console.Beep(1500, 150);
                Console.Beep(1000, 150);
                Console.Beep(1500, 150);
            }
        }

        //returns true if x,y is in the grid, otherwise returns false
        private Boolean PointInGrid(int x, int y)
        {
            if (x < 0 || x >= SIZE) return false;
            if (y < 0 || y >= SIZE) return false;
            return true;
        }

        //returns true if x,y is a valid position to move to
        public Boolean PointIsFree(int x, int y)
        {
            if (!PointInGrid(x, y)) return false;
            if (coords[x, y] == '*')
            {
                Console.Beep(370, 100);
                return false;
            }
            if (coords[x, y] == '$')//checking to see if the player has moved onto a treasure
            {
                randomValue = randNum.Next(1, 6);//assigns a random value to the treasure
                Console.Beep(32000, 100);
                Console.Beep(32000, 100);
                score += randomValue;
                coords[x, y] = ' ';//clears the treasure once it's been collected
            }
            return true;
        }
        
        public Boolean PointIsAlsoFree(int x, int y)
        {
            if (!PointInGrid(x, y)) return false;
            if (coords[x, y] == '*')
            {
                return false;
            }
            return true;
        }

        public int GetLevel() { return currentLevel; }
        public int GetScore() { return score; }
        public int GetMoves() { return moves; }
    }
}