Controls:

Press "u" key to increment the speed of the comet's descent
Press "d" key to decrement the speed of the coment's descent
Press "l" key to animate the lake
Press "e" key to rotate the earth
Press "k" key to Animate the comet
Press "R" key to make step size bigger (if moving too slowly)
Press "r" key to make step size smaller (if moving too fast).
Press "s" key to enable smooth shade modeling 
Press left mouse button multiple times for animation of laser and fire
Press ESCAPE to exit.

Description of Scene:
The Program animates a night Scene where there is a mountain with the texture of snow.
The Mountain is surrounded by trees and a lake. To the left of the mountain there is a
building that has a spaceship hovering over it. A planet (earth) is seen also above and 
on the left of the building. To the top right of the scene there is a comet with a trail
of dust that is above the ground. The functions to many parts of the scene have been 
summarized above.

Earth: Uses the glvertex3f commands to generate the sphere within nested for loops.
Mountain: uses the glVertex3f command to generate the cone by using GL_TRIANLE_FAN.
Builing: Uses the GL_QUAD function to generate the building
Lake: uses the same method as for a Mountain but uses the single point of a cone as 0.0
Ship: uses two codes for the cone generation, but rotates them to form the saucer affect
Trees: uses the cone code.