RotateExample

01 importimport means to make the classes and/or packages available in this program fang.*;
02 importimport means to make the classes and/or packages available in this program java.awt.*;
03 importimport means to make the classes and/or packages available in this program java.awt.geom.*;
04 
05 /**
06  * All about my game here.
07  * @authorthis is the Javadoc tag for documenting who created the source code Jam Jenkins
08  */
09 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 RotateExample extendsextends means to customize or extend the functionality of a class GameLoop
10 {open braces start code blocks and must be matched with a close brace
11   /**an oval*/
12   privateprivate is used to restrict access to the current class only Sprite oval;
13   privateprivate is used to restrict access to the current class only ProjectileTracker track;
14   /**sets up the game*/
15   publicpublic is used to indicate unrestricted access (any other class can have access) voidvoid means the method does not return a value startGame()
16   {open braces start code blocks and must be matched with a close brace
17     makeSprites();
18     addSprites();
19     setHelpText("watch it rotate");
20   }close braces end code blocks and must match an earlier open brace
21 
22   /**makes the sprites*/
23   privateprivate is used to restrict access to the current class only voidvoid means the method does not return a value makeSprites()
24   {open braces start code blocks and must be matched with a close brace
25     oval=this assignment operator makes the left side equal to the right sidenewnew is used to create objects by calling the constructor OvalSprite(2, 1);
26     oval.setScale(0.75);
27     oval.setLocation(0.5, 0.5);
28     Point2D.Double direction=this assignment operator makes the left side equal to the right sidenewnew is used to create objects by calling the constructor Point2D.Double(0.0, 0.0);
29     track=this assignment operator makes the left side equal to the right sidenewnew is used to create objects by calling the constructor ProjectileTracker(direction);
30     /**rotate 1/2 a revolution per second*/
31     track.setAngularVelocity(3.14);
32     oval.setTracker(track);
33   }close braces end code blocks and must match an earlier open brace
34 
35   /**adds the sprites to the screen*/
36   privateprivate is used to restrict access to the current class only voidvoid means the method does not return a value addSprites()
37   {open braces start code blocks and must be matched with a close brace
38     canvas.addSprite(oval);
39   }close braces end code blocks and must match an earlier open brace
40 }close braces end code blocks and must match an earlier open brace