Java SWOS Specification

Spec

Java SWOS Specification

Game Loop Most of this will probably have to be re-ordered:

Do
	Process Events 

	Check for collisions

   Move Ball

	Move Passive Players

	Move Active Players

	Change Active/Passive Players if necessary

	Draw
Until GameOver

notes:

Process events	in Java, this is in a separate thread, and as such, we don't actually need to worry about where in the loop this goes)
Check for collisions	Between active players and ball/players. Between ball and pitch edges (including goal)
Move Ball	Oooh don't you just love physics
Move Passive Players	Coupled to tactics
Move Active Players	Dependent on keys pressed or computer AI
Change Active/Passive Players if necessary	Ooch, this could be hard and contentious
Draw	Transform virtual co-ordinates to screen co-ordinates, draw everything to a back-buffer and flip!

Classes:

	Methods	Properties	superclass
Class

Ball	X,Y,Z,Quadrant,velocityx,velocityy,velocityz,Image	PlaceBall(x,y,z) ; Move() ; Strike(?) ; ApplyAftertouch(?) ;	2dSprite
Team	Name, gamestats, etc. ; PlayerArray()	?	None
Player	X,Y,Z,Vx,Vy,Vz,AIState,Image	Move(Tactic) ; Move(X,Y,Z) ; ChangeState(?) ; MoveRelative(?,?,?)	2dSprite
2dSprite	??		Image?
Tactic	Probably a matrix of ball positions and ideal player positions	Load/Save	None
Pitch	Image, Backbuffer?	coordinate transforms	Image?
swosgame	loads	container of main game loop	None (extends Applet)

These classes will be arranged like this in coding structure:
Class Ownership diagram

4th April 2002

Jonathan Daniel 2002