scg/ch05/SnowmanSprite

01 packagepackage is used to name the directory or folder a class is in scg.ch05;
02 
03 importimport means to make the classes and/or packages available in this program java.awt.geom.Rectangle2D;
04 
05 importimport means to make the classes and/or packages available in this program fang2.core.Game;
06 importimport means to make the classes and/or packages available in this program fang2.core.Sprite;
07 importimport means to make the classes and/or packages available in this program fang2.sprites.CompositeSprite;
08 importimport means to make the classes and/or packages available in this program fang2.sprites.OvalSprite;
09 
10 // FANG Demonstration program: CompositeSprite
11 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 SnowmanSprite
12   extendsextends means to customize or extend the functionality of a class CompositeSprite {open braces start code blocks and must be matched with a close brace
13   // add three circles to snowman, add snowman to scene
14   publicpublic is used to indicate unrestricted access (any other class can have access) SnowmanSprite() {open braces start code blocks and must be matched with a close brace
15     OvalSprite head =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor OvalSprite(0.3, 0.3);
16     head.setColor(Game.getColor("SCGRed"));
17     head.setLocation(0, -0.25);
18     addSprite(head);
19 
20     OvalSprite middle =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor OvalSprite(0.4, 0.4);
21     middle.setColor(Game.getColor("SCGRed"));
22     middle.setLocation(0.0, 0.0);
23     addSprite(middle);
24 
25     OvalSprite bottom =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor OvalSprite(0.5, 0.5);
26     bottom.setColor(Game.getColor("SCGRed"));
27     bottom.setLocation(0, 0.35);
28     addSprite(bottom);
29   }close braces end code blocks and must match an earlier open brace
30 
31   // spin the snowman about 4 times a minute; see how everything
32   // moves relative to (0.0, 0.0) ON snowman.
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 secondsSinceLastCall) {open braces start code blocks and must be matched with a close brace
34     rotateDegrees(24.0 * secondsSinceLastCall);
35   }close braces end code blocks and must match an earlier open brace
36 
37   @Override
38   publicpublic is used to indicate unrestricted access (any other class can have access) booleanboolean is a type that is either true or false intersects(Sprite sprite) {open braces start code blocks and must be matched with a close brace
39     Rectangle2D spriteBounds =this assignment operator makes the left side equal to the right side sprite.getBounds2D().Rectangle2D();
40     Rectangle2D bounds =this assignment operator makes the left side equal to the right side getBounds2D().Rectangle2D();
41     ifif executes the next statement only if the condition in parenthesis evaluates to true (!this is the not operator, which changes true to false and false to truebounds.intersects(spriteBounds)) {open braces start code blocks and must be matched with a close brace
42       returnreturn means to provide the result of the method and/or cease execution of the method immediately falsefalse is a value for the boolean type and means not true;
43     }close braces end code blocks and must match an earlier open brace
44     returnreturn means to provide the result of the method and/or cease execution of the method immediately truetrue is the boolean value that is the opposite of false;
45   }close braces end code blocks and must match an earlier open brace
46 }close braces end code blocks and must match an earlier open brace
47 
48 //Uploaded on Mon Mar 29 21:42:17 EDT 2010