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

namespace CollisionDetection2
{
    public partial class CollisionDetection : Form
    {
        static int xGreen;
        static int xBrown;

        static int yGreen;
        static int yBrown;

        static bool IsMovingDownGreen;
        static bool IsMovingDownBrown;

        static bool IsMovingRightGreen;
        static bool IsMovingRightBrown;

        public CollisionDetection()
        {
            InitializeComponent();
        }

        private void CollisionDetection_Load(object sender, EventArgs e)
        {
            xGreen = 10;
            yGreen = 10;

            xBrown = 1100;
            yBrown = 500;

            IsMovingDownGreen = false;
            IsMovingDownBrown = false;

            IsMovingRightGreen = false;
            IsMovingRightBrown = false;

            SetStyle(ControlStyles.UserPaint, true);
            SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            SetStyle(ControlStyles.DoubleBuffer, true);
        }
    }
}

private void tmrMover_Tick(object sender, EventArgs e)
{
    // If the status of the origin indicates that it is moving right,
    // then increase the horizontal axis
    if (IsMovingRightGreen == true)
        xGreen++;
    else // If it's moving left, then decrease the horizontal movement
        xGreen--;

    // If the status of the origin indicates that it is moving down,
    // then increase the vertical axis
    if (IsMovingDownGreen == true)
        yGreen++;
    else // Otherwise, decrease it
        yGreen--;

    // Collision: if the axis hits the right side of the screen,
    // then set the horizontal moving status to "Right", which will be used
    // by the above code
    if ((xGreen + pbxGreen.Width) >= ClientSize.Width)
        IsMovingRightGreen = false;
    if ((xGreen + pbxGreen.Width) <= 100)
        IsMovingRightGreen = true; ;

    if ((yGreen + pbxGreen.Height) >= ClientSize.Height)
        IsMovingDownGreen = false;
    if ((yGreen + pbxGreen.Height) <= 50)
        IsMovingDownGreen = true;

    BackColor = Color.Black;

    pbxGreen.Location = new Point(xGreen, yGreen);

    // -----------------------------------------------------------
    if (IsMovingRightBrown == true)
        xBrown += 2;
    else // If it's moving left, then decrease the horizontal movement
        xBrown--;

    // If the status of the origin indicates that it is moving down,
    // then increase the vertical axis
    if (IsMovingDownBrown == true)
        yBrown += 2;
    else // Otherwise, decrease it
        yBrown--;

    // Collision: if the axis hits the right side of the screen,
    // then set the horizontal moving status to "Right", which will be used
    // by the above code
    if ((xBrown + pbxBrown.Width) >= ClientSize.Width)
        IsMovingRightBrown = false;
    if ((xBrown + pbxBrown.Width) <= 100)
        IsMovingRightBrown = true; ;

    if ((yBrown + pbxBrown.Height) >= ClientSize.Height)
        IsMovingDownBrown = false;
    if ((yBrown + pbxBrown.Height) <= 50)
        IsMovingDownBrown = true;
    pbxBrown.Location = new Point(xBrown, yBrown);

    if (pbxBrown.Bounds.IntersectsWith(pbxGreen.Bounds))
    {
        tmrMover.Enabled = false;
        /*                Random rndNumber = new Random();

                        xGreen = rndNumber.Next(Width);
                        xBrown = rndNumber.Next(Width);

                        yGreen = rndNumber.Next(Height);
                        yBrown = rndNumber.Next(Height);*/
    }
}