About:

• A simple program which can display and simulate the gravity and interactions between multiple objects.

Classes:

• Vector2: stores all positions, directions and contains some basic 2d vector math methods.
• UI: manages all graphics and user input
• PhysicsObject: contains methods which calculate gravity and collisions, as well as containing methods for adding force to an object.

Making changes:

• If you wish to make changes, simply edit the code in the main method located in GameManager.java.
• To add more physics objects, one can choose to call one or more of the following constructors: `PhysicsObject() PhysicsObject(Vector2 position, double mass) PhysicsObject(Vector2 position, double mass, boolean isKinematic, boolean freezeRot, boolean effectedByGrav, boolean graviational, boolean collisions)
• To add forces to the desired physics objects, use the addForce() method: `[physicsObject].addForce(new Vector2(x, y), 1);
• To change speed of time, edit the "timescale" variable in GameManager.java
• To change the FPS, modify the "FPS" final int in UI.java