scg/ch06/CountdownTimerTest

01 packagepackage is used to name the directory or folder a class is in scg.ch06;
02 
03 importimport means to make the classes and/or packages available in this program fang2.core.Game;
04 
05 /**
06  * Demonstration program showing how to use a CountdownTimer object.
07  */
08 publicpublic is used to indicate unrestricted access (any other class can have access) classclass is a group of fields and methods used for making objects CountdownTimerTest
09   extendsextends means to customize or extend the functionality of a class Game {open braces start code blocks and must be matched with a close brace
10   /** the countdown timer */
11   CountdownTimer countdown;
12 
13   /**
14    * Setup the countdown timer with 30 seconds on its face and place it
15    * in the middle of the screen.
16    */
17   @Override
18   publicpublic is used to indicate unrestricted access (any other class can have access) voidvoid means the method does not return a value setup() {open braces start code blocks and must be matched with a close brace
19     countdown =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor CountdownTimer();
20     countdown.setScale(0.5);
21     countdown.setLocation(0.5, 0.5);
22     addSprite(countdown);
23 
24     countdown.setTimer(30.0);
25     countdown.startTimer();// will start as soon as game starts
26   }close braces end code blocks and must match an earlier open brace
27 
28   /**
29    * Advance the game one frame. All the work here is pushed down into
30    * the countdown timer.
31    */
32   @Override
33   publicpublic is used to indicate unrestricted access (any other class can have access) voidvoid means the method does not return a value advance(doubledouble is the type for numbers that can contain decimal fractions deltaT) {open braces start code blocks and must be matched with a close brace
34     countdown.advance(deltaT);
35   }close braces end code blocks and must match an earlier open brace
36 }close braces end code blocks and must match an earlier open brace
37 
38 //Uploaded on Mon Mar 29 21:38:59 EDT 2010