One of the most important terms that you need to understand if you have started out to write a 3D game using any 3D engine would be Rigid Bodies !!
What is a RigidBody ?
In physics, a rigid body is nothing but a solid body of finite size in which change in original shape ( deformation in other words ) is not allowed. The following figure show what this means…
In the image consider the gray highlighted area to be the rigid body ( RB ) , the red circles are points on the surface of a rigid body.
The blue lines indicate the external forces acting on the points ( the surface of the rigidBody ).
Now the simple rule is that something can be considered a rigidBody if the points on the surface don't move even when some external forces are applied on them.
Before getting into more detail, we need to know how a rigidbody is used inside games…
coming soon…









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