October 2001
Intermediate to advanced
640 pages
18h 58m
English
Content preview from An Introduction to Object-Oriented Programming, 3rd Edition
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Appendix B
Source for the Billiards Game
This appendix lists the complete source for the billiards simulation described in Chapter 7.
B.1 ⊡ The Version without Inheritance
unit GraphicsEx;
(*
Billiards Simulation Program
Written by Tim Budd, July 2001 *) interface uses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, ExtCtrls, StdCtrls; type TBall = class(TObject) public constructor create (ix, iy : Integer; iLink : TBall); procedure draw (canvas : TCanvas); function hasIntersected(aBall : Tball) : Boolean; procedure hitBy (aBall : TBall); procedure update; procedure setCenter (nx, ny : Integer); procedure setDirection (nd : Real); private x, y : Integer; direction : Real; energy : Real; ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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