================== Simple FPS Game=========================
--Welcome to this simple FPS game. You'll be deal with 6---
--monsters (or u can try to run as fast as possible) which- 
---exist and guard in their own territories only. You'll---
--be alert if you enter their territories. Try to destroy-- 
--------------them by firing several times. ---------------
-------------Game ends if monster nears you.---------------
-----------------------Good luck!--------------------------
------------You'll get out if you see the exit-------------
===================== Controls ============================
Arrow Keys ---------- move or rotate scene
Left Mouse Btn ------ fire
W ------------------- move forwards
S ------------------- move backwards
A ------------------- strafe left
D ------------------- strafe right
F ------------------- toggle game info
I ------------------- invert mouse movement
		      (press it when the cursor is too high to invert
			the effect, and press again to restore it)
ESC ----------------- Exit Program
===========================================================
  	Date	|    Descripton
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16th JUNE 2004	|I think there are still 2 bugs need to be fixed: 
		|  (a)Actually the best situation for FPS game is
		|     shoot-to-death by single bullet. Due to my 
		|     knowledge, i increased it to 3 times. Futhermore
		|     i used congruent (between player and monster,
		|     and between monster and bullet at wall) to 
		|     calculate the hit test. It increased the error.
		|     But it's very difficult to detect the hit test 
		|     in 3D(at least for me!).
		|  (b)I've tried several times to fix the monster's
		|     rotation in order to let it always face 
		|     towards the player by using glRotatef(), 
		|     but failed. I really couldn't figure it out.
		|     Maybe I need to start from the beginning again.
		|*p/s: 1)No need to criticize this program, I know
		|      this game is suck. (as you can see my 
		|      programming level is very low.)
		|      2)I tried to load the monsters externally,
		|      but the monsters lost tracking ability .Thus 
		|      I included it inside the MainLoop to let
		|      it more thriller although the file size 
		|      increased tremendously.
		|      3)I put some efforts to let the monsters 
		|      animate using the code from GameTutorials.com
		|      on the code from GlDomain.com but again, failed.
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