Form2.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Media;

namespace ScoreBoard
{
    public partial class Form2 : Form
    {                
        Form1 display = new Form1();
        Form1 mirror = new Form1();

        Timer myTimer = new Timer();

        SoundPlayer splayer = new SoundPlayer(@"Alarm.wav");

        public int m, s, cent, totalSeconds, scoreA, scoreB, foulsA, foulsB;
        bool pause;
        
        public Form2()
        {
            InitializeComponent();

            myTimer.Interval = 100;
            myTimer.Tick += new EventHandler(myTimer_Tick);
            myTimer.Enabled = false;
            pause = false;

            if (ComboBoxMinutes.SelectedItem != null) m = int.Parse(ComboBoxMinutes.Text);
            if (ComboBoxSeconds.SelectedItem != null) s = int.Parse(ComboBoxSeconds.Text);
            cent = 0;
            scoreA = 0;
            scoreB = 0;
            foulsA = 0;
            foulsB = 0;

            // Populate ComboBoxes
            for (int i=0; i<60; i++){
                ComboBoxMinutes.Items.Add(i.ToString());
                ComboBoxSeconds.Items.Add(i.ToString());
            }
            
            InitiateStats();
            
            display.Show();

            mirror.Size = new System.Drawing.Size(400,300);
            mirror.Show();
        }
        ///////////////////////
        //  I N I T I A T E  //
        ///////////////////////

        public void InitiateStats(){
            // Set Timer
            TimerDisplay.Text = $"{m.ToString().PadLeft(2,'0')}:{s.ToString().PadLeft(2,'0')}.{cent.ToString()}";
            
            // Set Score to Zero
            SCORES_A.Text = scoreA.ToString().PadLeft(2,'0');
            SCORES_B.Text = scoreB.ToString().PadLeft(2,'0');

            // Default Zeros on ComboText
            ComboBoxMinutes.Text = "0";
            ComboBoxSeconds.Text = "0";
        }
        
        /////////////////////////////////////
        //   D I S P L A Y - U P D A T E S //
        /////////////////////////////////////

        public void updateScoreA(){
            SCORES_A.Text = scoreA.ToString().PadLeft(2,'0');
            display.displayHome = scoreA.ToString().PadLeft(2,'0');
            mirror.displayHome = scoreA.ToString().PadLeft(2,'0');
        }
        public void updateScoreB(){
            SCORES_B.Text = scoreB.ToString().PadLeft(2,'0');
            display.displayGuest = scoreB.ToString().PadLeft(2,'0');
            mirror.displayGuest = scoreB.ToString().PadLeft(2,'0');
        }
        public void updateFoulsA(){
            FoulsA.Text = foulsA.ToString();
            display.displayFoulsA = foulsA.ToString();
            mirror.displayFoulsA = foulsA.ToString();
        }
        public void updateFoulsB(){
            FoulsB.Text = foulsB.ToString();
            display.displayFoulsB = foulsB.ToString();
            mirror.displayFoulsB = foulsB.ToString();
        }
        public void updateTimers(){
            TimerDisplay.Text = $"{m.ToString().PadLeft(2,'0')}:{s.ToString().PadLeft(2,'0')}.{cent.ToString()}";
            display.displayTimer = $"{m.ToString().PadLeft(2,'0')}:{s.ToString().PadLeft(2,'0')}.{cent.ToString()}";
            mirror.displayTimer = $"{m.ToString().PadLeft(2,'0')}:{s.ToString().PadLeft(2,'0')}.{cent.ToString()}";
        }
        public void updateTeamsName(string inputA, string inputB){
            string name_A = inputA;
            string name_B = inputB;
            if (name_A.Length > 10) name_A = inputA[0..10];
            if (name_B.Length > 10) name_B = inputB[0..10];
            display.displayHomeName = name_A;
            display.displayGuestName = name_B;
            mirror.displayHomeName = name_A;
            mirror.displayGuestName = name_B;
        }

        ///////////////////////
        //      K E Y S      //
        ///////////////////////

        private void Form2_KeyDown(object sender, KeyEventArgs e)
        {
            if (TextBoxA.Focused == false & TextBoxB.Focused == false) 
            {
            
                switch (e.KeyCode) {
                    case Keys.A:
                    scoreA++;
                    updateScoreA();
                    break;

                    case Keys.Z:
                    scoreA--;
                    if (scoreA < 0) scoreA = 0;
                    updateScoreA();
                    break;

                    case Keys.K:
                    scoreB++;
                    updateScoreB();
                    break;

                    case Keys.M:
                    scoreB--;
                    if (scoreB < 0) scoreB = 0;
                    updateScoreB();
                    break;

                    case Keys.S:
                    foulsA++;
                    if (foulsA > 9) foulsA = 0;
                    updateFoulsA();
                    break;

                    case Keys.X:
                    foulsA--;
                    if (foulsA < 0) foulsA = 0;
                    updateFoulsA();
                    break;

                    case Keys.J:
                    foulsB++;
                    if (foulsB > 9) foulsB = 0;
                    updateFoulsB();
                    break;

                    case Keys.N:
                    foulsB--;
                    if (foulsB < 0) foulsB = 0;
                    updateFoulsB();
                    break;

                    case Keys.Q:
                    scoreA = 0;
                    foulsA = 0;
                    updateScoreA();
                    updateFoulsA();
                    break;

                    case Keys.O:
                    scoreB = 0;
                    foulsB = 0;
                    updateScoreB();
                    updateFoulsB();
                    break;

                    case Keys.Space:
                    if (BtnSet.Enabled == false & totalSeconds > 0){
                        pause = !pause;
                        timerStopRestart(pause);
                    }
                    break;
                }
            }
            else if (TextBoxA.Focused == true | TextBoxB.Focused == true) {
                
                switch (e.KeyCode) {
                    case Keys.Enter:
                    e.Handled = true;
                    e.SuppressKeyPress = true;
                    this.SelectNextControl(this, true, true, false, false);
                    updateTeamsName(TextBoxA.Text.ToUpper(), TextBoxB.Text.ToUpper());
                    break;
                }
            }
        }


        ///////////////////////
        //   B U T T O N S   //
        ///////////////////////
        // Timer Set
        public void BtnSet_Click(object sender, EventArgs e){
            m = int.Parse(ComboBoxMinutes.Text);
            s = int.Parse(ComboBoxSeconds.Text);
            totalSeconds = ((m * 60) + s) * 10;              // Total Seconds
            
            updateTimers();

            if (totalSeconds > 0) {
                BtnSTART.Enabled = true;
                BtnSTART.BackColor = Color.SpringGreen;
                BtnSTART.Focus();
            }
        }
        // CLR_A
        public void ClrA_Click(object sender, EventArgs e){
            scoreA = 0;
            foulsA = 0;
            updateScoreA();
            updateFoulsA();
        }
        // CLR_B
        public void ClrB_Click(object sender, EventArgs e){
            scoreB = 0;
            foulsB = 0;
            updateScoreB();
            updateFoulsB();
        }

        // Btn START
        public void BtnStart_Click(object sender, EventArgs e){
            myTimer.Enabled = true;
            pause = false;

            BtnSet.Enabled = false;
            BtnSet.BackColor = Color.LightGray;

            BtnSTOP.Enabled = true;
            BtnSTOP.BackColor = Color.Tomato;

            Button10.Focus();                         // DSPLY
            BtnSTART.BackColor = Color.LightGray;     // START COLOR

            BtnRESET.Enabled = true;
            BtnRESET.BackColor = Color.Gold;
            
            timerStopRestart(pause);
        }
        // Btn STOP
        public void BtnStop_Click(object sender, EventArgs e) {
            myTimer.Enabled = !myTimer.Enabled;
            pause = !pause;

            Button10.Focus();

            if (pause) {
                BtnSTOP.BackColor = Color.SpringGreen;
                BtnSTOP.Text = "START";

                timerStopRestart(pause);
            } else {
                BtnSTOP.BackColor = Color.Tomato;
                BtnSTOP.Text = "STOP";

                timerStopRestart(pause);
            }
        }

        // Btn Reset
        public void btnReset_Click(object sender, EventArgs e){
            if (pause == true){
                m = 0;
                s = 0;
                cent = 0;
                totalSeconds = 0;

                updateTimers();

                BtnSet.Enabled = true;
                BtnSet.BackColor = Color.Gold;
                
                BtnRESET.Enabled = false;
                BtnRESET.BackColor = Color.LightGray;

                BtnSTOP.Enabled = false;
                BtnSTOP.BackColor = Color.LightGray;
                BtnSTOP.Text = "STOP";

                ResetDisplay();
            }
        }
        // Btn + A
        public void BtnPlusPointA_Click(object sender, EventArgs e){
            scoreA++;
            updateScoreA();
        }
        // Btn - Z
        public void BtnMinusPointZ_Click(object sender, EventArgs e){
            if (scoreA > 0) {
                scoreA--;
                updateScoreA();
            }
        }
        // Btn + K
        public void BtnPlusPointK_Click(object sender, EventArgs e){
            scoreB++;
            updateScoreB();
        }
        // Btn - M
        public void BtnMinusPointM_Click(object sender, EventArgs e){
            if (scoreB > 0) {
                scoreB--;
                updateScoreB();
            }
        }
        // Fouls + S
        public void BtnPlusFoulsA_Click(object sender, EventArgs e) {
            foulsA++;
            if (foulsA > 9) foulsA = 0;
            updateFoulsA();
        }
        // Fouls - X
        public void BtnMinusFoulsA_Click(object sender, EventArgs e) {
            if (foulsA > 0) {
                foulsA--;
                updateFoulsA();
            }
        }
        // Fouls + J
        public void BtnPlusFoulsB_Click(object sender, EventArgs e) {
            foulsB++;
            if (foulsB > 9) foulsB = 0;
            updateFoulsB();
        }
        // Fouls - N
        public void BtnMinusFoulsB_Click(object sender, EventArgs e) {
            if (foulsB > 0) {
                foulsB--;
                updateFoulsB();
            }
        }

        ///////////////////////
        //     T I M E R     //
        ///////////////////////
        
        public void myTimer_Tick(object sender, EventArgs e) {
            if (totalSeconds > 0){
                totalSeconds--;

                m = (totalSeconds/10) / 60;
                s = (totalSeconds/10) - (m * 60);
                cent = totalSeconds % 10;
            } 
            else if (totalSeconds == 0) {
                BtnRESET.Enabled = true;
                BtnRESET.BackColor = Color.Gold;
                EndGame();
            }

            updateTimers();
        }

        public void timerStopRestart(bool status){
            if (status == true) {
                myTimer.Stop();

                BtnRESET.Enabled = true;
                BtnRESET.BackColor = Color.Gold;

                BtnSTOP.BackColor = Color.SpringGreen;
                BtnSTOP.Text = "START";
                
            }
            else if (status == false) {
                myTimer.Start();

                BtnRESET.Enabled = false;
                BtnRESET.BackColor = Color.LightGray;

                BtnSTOP.BackColor = Color.Tomato;
                BtnSTOP.Text = "STOP";
            }
        }
        public void EndGame(){
            pause = true;
            myTimer.Stop();

            splayer.Play();

            BtnSTOP.Enabled = false;
            BtnSTOP.BackColor = Color.LightGray;
            
            display.BackColor = Color.Red;
            mirror.BackColor = Color.Red;

            display.colorTimer.BackColor = Color.Red;
            mirror.colorTimer.BackColor = Color.Red;
            display.colorTimer.ForeColor = Color.Black;
            mirror.colorTimer.ForeColor = Color.Black;

            display.colorScoreA.BackColor = Color.Red;
            mirror.colorScoreA.BackColor = Color.Red;
            display.colorScoreB.BackColor = Color.Red;
            mirror.colorScoreB.BackColor = Color.Red;

            display.colorFoulsA.BackColor = Color.Red;
            mirror.colorFoulsA.BackColor = Color.Red;
            display.colorFoulsB.BackColor = Color.Red;
            mirror.colorFoulsB.BackColor = Color.Red;
        }

        public void ResetDisplay(){
            display.BackColor = Color.Black;
            mirror.BackColor = Color.Black;

            display.colorTimer.BackColor = Color.Black;
            mirror.colorTimer.BackColor = Color.Black;
            display.colorTimer.ForeColor = Color.Red;
            mirror.colorTimer.ForeColor = Color.Red;

            display.colorScoreA.BackColor = Color.Black;
            mirror.colorScoreA.BackColor = Color.Black;
            display.colorScoreB.BackColor = Color.Black;
            mirror.colorScoreB.BackColor = Color.Black;

            display.colorFoulsA.BackColor = Color.Black;
            mirror.colorFoulsA.BackColor = Color.Black;
            display.colorFoulsB.BackColor = Color.Black;
            mirror.colorFoulsB.BackColor = Color.Black;
        }
    }
}