I tried to build a robot with moving body parts, but I 
only made arms move. I used sphere and squares to build it.
Both arms can be moved with keybord
control. And I made walls using texture mapping.
Also, I made a sphere that moves like the sun. As the 
sphere a moves, a light moves along with it so it gives
sun rising and sun setting effects.
I also added a little car that rotates near the robot.
There are three lights and two of them are represent by
little spheres and one of them is the moving sphere(the 
sun). All lights can be turned on and off using 1-3 keys.

Keyboard Controls

Robot arm control
t: moves up left upper arm
g: moves down left upper arm
y: moves up left lower arm
h: moves down left lower arm
u: moves up right upper arm
j: moves down right upper arm
i: moves up right lower arm
k: moves down right lower arm

Wire frame mode: w
rotating scene: arrow keys