Math question... offset spawned actor between 0,0 and another actor

BarkBarkCo

I have a ball that travels around the screen. If you draw an imaginary line from 0,0 to my ball actor, I need to spawn different actor 40 pixels below my ball, down that line... Does that make sense? I just need the math for positioning the second actor. Thanks!

ORBZ

x = (magnitude(ballX, ballY)-40)*cos(vectorToAngle(ballX, ballY))
y = (magnitude(ballX, ballY)-40)*sin(vectorToAngle(ballX, ballY))

note: this is simplified because your start point is 0,0

if it were not 0, 0 you would compute the magnitude and the vectortoangle slightly differently: targetx - startx, targety - starty. But because startx and starty are 0 you can omit them from the equation.

BarkBarkCo

That didn't take long at all! Thanks for the tip for when 0,0 is not the starting point as ultimately I will need to move that around!

ORBZ for moderator!!