Those of us that are already familiar with Unity are aware of the original Physics component. However, this component only works for 3D. There is now a new component specifically for 2D called Physics 2D. The Physics 2D Manager has the global settings for Physics 2D.
To access it, we do the following:
Go to Edit | Project Settings | Physics 2D. We would see the Physics 2D Manager as shown in the following screenshot:
The Physics 2D Manager settings are as follows:
Gravity: We can set the global gravity that will affect all objects in our game. X is for horizontal gravity along the x axis and Y is for vertical gravity along the y axis.
Default Material: This is an assigned Physics 2D Material. By default, None is assigned.
Velocity Iterations: This is the number of iterations by the physics engine to calculate the changes in velocity of an object/body. The higher this value, the more accurate it is, but it is more expensive from the CPU's standpoint.
Position Iterations: This is the...