bouncing ball off of walls

[iop]

I have a ball that starts out in the middle of the screen, drops down. From there, I need the ball to start bouncing around the whole screen. My problem is that the screen isnt the average Turing screen. I have mine edited to cover the whole area of the computer screen of the computer that my program is running on. I would love some help on how I could make the ball bounce around the whole screen.

[Delos]

http://www.compsci.ca/v2/viewtopic.php?t=75

Collision detection.

Also:

- you most likely will need to check for the ball's position. So...

code:

var ballX, ballY : int := 0 %...some code drawing ball etc. if ballX < maxx then ballX += 1 else ballX -= 1 end if % This checks to see if the ball has reached the end of the screen...this % is really not good code...don't use it...it's just demonstrating how things % would be done.

[PhOeNiX-47]

Well, first of all ur ball needs to go in a direction using a variable. Make sure the if u hit a wall make the direction change Let me show you.

code:

View.Set ("offscreenonly") var row_change := 1 var row := 200 loop cls     row := row + row_change     drawfilloval (300, row, 25, 25, black)     if row = 25 then         row_change := row_change * -1     elsif row = maxy - 25 then         row_change := row_change * -1     end if     View.Update     delay (1) end loop

Hope that helps you...