FollingRocks

using System;
using System.Threading;
using System.Collections.Generic;

class FallingRocks
{
    static Random randomGenerator = new Random();
    static int score = 0;


    static void Main()
    {
        // Settings
        int windowHeight = 20;
        int windowWidth = 50;
        int speedRock = 200;
        int densityRocks = 2;


        Console.CursorVisible = false;
        Console.WindowHeight = windowHeight;
        Console.WindowWidth = windowWidth;
        Console.BufferWidth = Console.WindowWidth;
        Console.BufferHeight = Console.WindowHeight + 1;

        //conteiner for rocks
        List<Rock> rocks = new List<Rock>();

        Dwarf dwarf = new Dwarf(windowWidth / 2 - 1, windowHeight - 2);

        bool isPlay = true;

        while (isPlay)
        {
            Console.Clear();
            RocksGenerator(rocks, densityRocks);
            dwarf.Print();

            if (Console.KeyAvailable)
            {
                ConsoleKeyInfo pressedKey = Console.ReadKey();
                if (pressedKey.Key == ConsoleKey.LeftArrow)
                    dwarf.MoveLeft(0);
                if (pressedKey.Key == ConsoleKey.RightArrow)
                    dwarf.MoveRight(windowWidth);
            }

            for (int i = 0; i < rocks.Count; i++)
            {
                rocks[i].Print();
                rocks[i].Move();
                if (rocks[i].Y == dwarf.Y)
                {
                    int rockStart = rocks[i].X;
                    int rockEnd = rockStart + rocks[i].Size - 1;
                    int dwarfStart = dwarf.X;
                    int dwarfEnd = dwarf.X + 2;
                    isPlay = rockEnd < dwarfStart || rockStart > dwarfEnd;
                }
            }

            RemoveRocksOutOfWindow(rocks);
            PrintScore(5, windowHeight - 1);
            Thread.Sleep(speedRock);
        }// end while

        Console.Clear();
        Console.WriteLine("Game Over!!!");
        Console.WriteLine("Your score: {0}", score);
        Console.ReadLine();
    }

    static void RocksGenerator(List<Rock> rocks, int densityRocks)
    {
        int randomNumber = randomGenerator.Next(1, densityRocks);

        for (int i = 0; i < randomNumber; i++)
        {
            int randomXPosition = randomGenerator.Next(1, Console.WindowWidth);
            rocks.Add(new Rock(randomXPosition));
        }
    }

    static void RemoveRocksOutOfWindow(List<Rock> rocks)
    {
        score++;
        for (int i = 0; i < rocks.Count; i++)
        {
            if (rocks[i].Y >= Console.WindowHeight - 1)
            {
                rocks.RemoveAt(i);
            }
        }
    }

    static void PrintScore(int x, int y)
    {
        Console.SetCursorPosition(x, y);
        Console.ForegroundColor = ConsoleColor.White;
        Console.Write("Score: {0}", score.ToString().PadLeft(5, '0'));
    }
}

class Rock
{
    int x;
    int y;
    string view;
    ConsoleColor color;
    static Random randomGenerator = new Random();
    static ConsoleColor[] colors = { ConsoleColor.Cyan, ConsoleColor.Yellow, ConsoleColor.Red, ConsoleColor.White };

    public Rock(int x = 0)
    {
        this.x = x;
        this.y = 0;
        string rockSymbols = "^@*&+%$#!.;-";
        int symbolPosition = randomGenerator.Next(0, rockSymbols.Length - 1);
        int size = randomGenerator.Next(1, 4);
        this.view = new String(rockSymbols[symbolPosition], size);
        color = colors[randomGenerator.Next(0, 3)];
    }

    public void Print()
    {
        Console.SetCursorPosition(this.x, this.y);
        Console.ForegroundColor = color;
        Console.Write(this.view);
    }

    public void Move()
    {
        this.y++;
    }

    public int X
    {
        get
        {
            return this.x;
        }

        set
        {
            this.x = value;
        }
    }

    public int Y
    {
        get
        {
            return this.y;
        }

        set
        {
            this.y = value;
        }
    }

    public int Size
    {
        get
        {
            return this.view.Length;
        }
    }

}

class Dwarf
{
    int x;
    int y;
    string view;
    ConsoleColor color = ConsoleColor.White;

    public Dwarf(int x, int y)
    {
        this.x = x;
        this.y = y;
        this.view = "(O)";
    }

    public void Print()
    {
        Console.SetCursorPosition(this.x, this.y);
        Console.ForegroundColor = color;
        Console.Write(this.view);
    }

    public void MoveLeft(int minX)
    {
        if (this.x > minX)
        {
            this.x--;
        }
    }

    public void MoveRight(int maxX)
    {
        if (this.x < maxX - this.view.Length)
        {
            this.x++;
        }
    }

    public int X
    {
        get
        {
            return this.x;
        }

        set
        {
            this.x = value;
        }
    }

    public int Y
    {
        get
        {
            return this.y;
        }

        set
        {
            this.y = value;
        }
    }

}