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I am trying to implement realistic physics for my game plinko. As of now i only implemented the inversion of the velocity and the distance between both objects.

public void changedirX () { velocityx = -velocityx; } public void changedirY() { velocityy = -velocityy; }

And the 'back bounce' of the ball gets implemented here:

if (Circle.isColliding(win1, kugel)){ //gewinn berechnen, Kugel entfernen }

Now the ball just bounces back infinitely until it hits the bounds of the canvas. I know that i need to implement the airresistance but do not know how to start. The questions answered here on StackExchange do not have any full code unfortunately. How can i let the ball bounce realistically without just falling down vertical.

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    \$\begingroup\$ Does this answer your question? How to calculate the exit speed of ball bouncing off a solid surface \$\endgroup\$ Commented Sep 16, 2023 at 12:35
  • \$\begingroup\$ We also have posts on calculating air drag. \$\endgroup\$ Commented Sep 16, 2023 at 12:52
  • \$\begingroup\$ @Pikalek i can't use vectors in android studio, i tried everything i know and posted a question about it too here. Is there any way to calculate that without vectors or do you know a way with handling vectors in android studio (canvas)? \$\endgroup\$ Commented Sep 16, 2023 at 15:24
  • \$\begingroup\$ There are three good books on this topic. Amazon... Game Physics In One Weekend, Game Physics The Next Week, Game Physics The Rest of Your Life.. There is a physics/collision library for shapes called bullet.. pybullet.org/wordpress \$\endgroup\$ Commented Sep 16, 2023 at 16:27
  • \$\begingroup\$ Do you have to use vectors? Yes & no. You don't have to use a vector class, but you do have to deal with X,Y coords, velocities & forces. The options are to use a predefined Vector class/struct, make your own vector class, or track the relevant info as variables pairs (i.e. posX, posY, deltaX, deltaY, etc.) Folks tend to use a vector class because it's a useful abstraction. To clarify: these are math type vectors not the dynamic list type \$\endgroup\$ Commented Sep 16, 2023 at 22:48

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