Making breakout game

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C#

algorithm

My friends I made some parts of this game but I have two problems in this game.

1)Problem about distinguishing ball collision with obstacles

1-1)A first problem is related to complex guidelines that I used them for simulation of ball collision with board or ball collision with blocks. These guidelines are not accurate especially when the ball meets with block corner or bottom. If it is not better for collision distinguish I use a better code. I wrote this code. Are you think that are there better way?

2)How I can do a work that if the ball collision with any obstacle, the obstacle report the collision.

My aim is about using of events. Are you thinking that I make obstacles as runtime? If I make as a runtime, how I can make collision event for them?

With best regards

private Point MouseDownLocation;

       int step = 2;
       int stepleft = 2;


       bool flagBottom;
       bool flagTop;

       private void Form1_Load(object sender, EventArgs e)
       {

           timer1.Interval = 10;
           timer1.Enabled = true;

       }

       private void timer1_Tick(object sender, EventArgs e)
       {


           ball.Top += step;
           ball.Left += stepleft;

           //board simulate collision
           bool collisonX = ball.Location.X + ball.Width > board.Location.X && ball.Location.X < board.Location.X + board.Width;
           bool collisonY = ball.Top + ball.Height == board.Location.Y || ball.Top + ball.Height - 1 == board.Location.Y;

           //board2(button1) simulate collision
           bool collisonX2 = ball.Location.X + ball.Width > board2.Location.X && ball.Location.X < board2.Location.X + board2.Width;
           bool collisonY2 = ball.Top + ball.Height == board2.Location.Y || ball.Top + ball.Height - 1 == board2.Location.Y;

           //Collision the ball with under buttons
           bool collsionButtonY = ball.Top - ball.Height == board2.Location.Y || ball.Top - ball.Height == board2.Location.Y - 1;

           //collision leftwall
           bool leftWall = ball.Left == 0 || ball.Left == -1 || ball.Left == 1;
           //collision rightwall
           bool topWall = ball.Top == 0 || ball.Top == -1 || ball.Top == 1;

           bool bottomWall = collisonX && collisonY;
           bool toppWall = collisonX2 && collisonY2;

           //collision
           bool barrier = collisonX2 && collsionButtonY;

           //rightwall
           bool rightWall = ball.Left + ball.Width == this.ClientSize.Width || ball.Left + ball.Width == this.ClientSize.Width - 1;
           // sidewall = collision rightwall or leftwall
           bool sideWall = leftWall || rightWall;

           //Check the ball hit the ground
           bool check = ball.Top + ball.Height < this.ClientSize.Height;


           //if topWall true,This means that the ball is hit to the topwall

           if (topWall)
           {
               flagBottom = false;
               flagTop = true;
               if (stepleft > 0)
               {
                   step = 2;
               }
               else if (stepleft < 0)
               {
                   step = 2;
               }



           }
           //if bottomWall true,This means that the ball is hit to the board

           else if (bottomWall)
           {
               flagBottom = true;
               flagTop = false;
               if (stepleft > 0)
               {
                   step = step * -1;

               }
               else if (stepleft < 0)
               {

                   step = step * -1;
               }


           }
           //if barrier true and flagbottom true,This means that the ball is hit to the board2(button1)

           else if (barrier && flagBottom)
           {

               if (stepleft > 0)
               {

                   step = step * -1;

               }
               else if (stepleft < 0)
               {
                   step = step * -1;

               }
           }
           //if toppWall true and flagTop true,This means that the ball is hit to The top button is hit

           else if (toppWall && flagTop)
           {
               if (stepleft > 0)
               {
                   step = step * -1;
               }
               else if (stepleft < 0)
               {
                   step = step * -1;

               }
           }
           else if (sideWall)
           {
               //if leftwall true,This means that the ball is hit to the left side wall
               if (leftWall)
               {
                   if (flagTop)
                   {
                       stepleft = 2;
                   }
                   else if (flagBottom)
                   {

                       stepleft = 2;
                   }
               }
               //if rightWall true,This means that the ball is hit to the left side wall
               else if (rightWall)
               {
                   if (flagTop)
                   {
                       stepleft = -2;
                   }
                   else if (flagBottom)
                   {
                       stepleft = -2;
                   }

               }


           }
               //check if ckeck==ture,this mean the ball is hit the ground
           else if (!check)
           {
               timer1.Enabled = false;
           }





       }






       private void board_MouseDown(object sender, MouseEventArgs e)
       {
           if (e.Button == MouseButtons.Left)
           {
               MouseDownLocation = e.Location;
           }

       }

       private void board_MouseMove(object sender, MouseEventArgs e)
       {

           if (e.Button == MouseButtons.Left)
           {
               board.Left = e.X + board.Left - MouseDownLocation.X;

           }



       }