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;

namespace ProjectileGame
{
    public partial class Form1 : Form
    {
        projectile p;

        public Form1()
        {
            InitializeComponent();
            this.p = new projectile();
        }

        public void launchTimer_Tick(object sender, EventArgs e)
        {
            p.projectilepathcalculate();
            bool craterBool = p.checkForCrater();
            if(craterBool == true)
            {
                crater.Location = new Point(p.FinalX, 500);
                crater.Visible = true;
            }
            ball.Location = new Point(p.FinalX, p.FinalY);
            timeSinceLaunchBox.Text = Convert.ToString(p.showTimeElapsed);
            ballXBox.Text = ball.Location.X.ToString();
            ballYBox.Text = ball.Location.Y.ToString();
        }

        private void launch_Click(object sender, EventArgs e)
        {
            launchTimer.Start();
        }

        public void inspeedchanged(object sender, EventArgs e)
        {
            try
            {
                int tempInitialSpeed = Convert.ToInt32(speedTextBox.Text);
                if (tempInitialSpeed < 1)
                {
                    MessageBox.Show("input a speed higher than 1");
                }
                else
                {
                    p.initialSpeed = tempInitialSpeed;
                    speedTextBox.Text = Convert.ToString(tempInitialSpeed);
                }
            }
            catch (Exception)
            {
                if (speedTextBox.Text == "")
                {
                    //do nothing if textbox is empty
                }
                else
                {
                    MessageBox.Show("invalid input");
                }
            }
        }

        private void anglechanged(object sender, EventArgs e)
        {
            try
            {
                string showAngle = angleTextBox.Text;
                int tempAngle = Convert.ToInt32(angleTextBox.Text);
                if (tempAngle > 1 & tempAngle < 90)
                {
                    p.angle = tempAngle;
                    angleTextBox.Text = showAngle;
                }
                else
                {
                    MessageBox.Show("please input an angle between 1 and 90");
                }
            }
            catch (Exception)
            {
                if (angleTextBox.Text == "")
                {
                    //do nothing if textbox is empty
                }
                else
                {
                    MessageBox.Show("invalid input");
                }
            }
        }

        private void masschanged(object sender, EventArgs e)
        {
            try
            {
                string showMass = massTextBox.Text;
                int tempMass = Convert.ToInt32(massTextBox.Text);
                if (tempMass >= 1)
                {
                    p.mass = tempMass;
                    massTextBox.Text = showMass;
                }
                else
                {
                    MessageBox.Show("please input a mass above 1");
                }
            }
            catch (Exception)
            {
                if (massTextBox.Text == "")
                {
                    //do nothing if textbox is empty
                }
                else
                {
                    MessageBox.Show("invalid input");
                }
            }
        }

        private void materialChanged(object sender, EventArgs e)
        {
            p.material = comboBoxMaterial.Text;
        }

        private void resetButtonPressed(object sender, EventArgs e)
        {
            p.startX = 68;
            p.startY = 474;
            p.FinalX = 68;
            p.FinalY = 474;
            p.timeElapsed = 0;
            p.showTimeElapsed = 0;
            p.initialSpeed = Convert.ToInt32(speedTextBox.Text);
            crater.Visible = false;
            timeSinceLaunchBox.Text = "0";
            launchTimer.Enabled = false;
            ball.Location = new Point(p.FinalX, p.FinalY);
            ballYBox.Text = "474";
            ballXBox.Text = "68";
        }

        private void defaultValuePressed(object sender, EventArgs e)
        {
            p.initialSpeed = 80;
            p.timeElapsed = 0;
            p.mass = 10;
            p.angle = 30;
            p.material = "Rubber";
            massTextBox.Text = "10";
            angleTextBox.Text = "30";
            speedTextBox.Text = "80";
            massTextBox.Text = "10";
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }
    }

    public class projectile
    {
        public int timeElapsed = 0;
        public double g = -9.8;
        public double initialSpeed = 80;
        public double angle = 30;
        public int startX = 68;
        public int startY = 474;
        public int FinalX = 68;
        public int FinalY = 474;
        public double mass = 10;
        public string material = "Rubber";
        public int showTimeElapsed = 0;

        public projectile()
        {

        }

        public void projectilepathcalculate()
        {
            //only do if balls velocity is positive
            if (initialSpeed >= 1)
            {
                timeElapsed = timeElapsed + 1;
                showTimeElapsed++;
                if (FinalY <= 474)
                {
                    FinalX = Convert.ToInt32(startX + initialSpeed * timeElapsed * Math.Cos(angle));
                    FinalY = Convert.ToInt32(startY + initialSpeed * timeElapsed * Math.Sin(angle) - 0.5 * g * timeElapsed * timeElapsed);
                    //store the location of the ball for use in the next bounce
                }
                else if (FinalY > 474 & material == "Rubber")
                {
                    //reset timer to treat each bounce as a new launch
                    timeElapsed = 1;
                    //make the start position the old position for new launch
                    startX = FinalX;
                    FinalY = 474;
                    //put the ball at y=474 so the bounce can start again
                    //reduce speed of ball for next bounce
                    initialSpeed = 0.9 * initialSpeed - (0.5 * mass);
                }

            }
        }
        public bool checkForCrater()
        {
            if (FinalY > 474 & material == "Metal")
            {
                initialSpeed = 0;
                return true;
            }
            else
            {
                return false;
            }
        }

    }







}