scg/ch07/ColoredRectanglesMP

01 packagepackage is used to name the directory or folder a class is in scg.ch07;
02 
03 importimport means to make the classes and/or packages available in this program fang2.attributes.Location2D;
04 importimport means to make the classes and/or packages available in this program fang2.core.Game;
05 importimport means to make the classes and/or packages available in this program fang2.sprites.RectangleSprite;
06 
07 /**
08  * Demonstration of multi-player game techniques. Constructor sets
09  * number of required players to 2. When 2 players have joined, game can
10  * be started. Game looks forfor is a looping structure for repeatedly executing a block of code mouse clicks and draws random rectangles.
11  * Note that rectangles are the same on both screens.
12  */
13 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 ColoredRectanglesMP
14   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
15   /**
16    * Construct a newnew is used to create objects by calling the constructor ColoredRectangleMP object; initialize the Game part
17    * and then set the player count to 2 (make it multi-player).
18    */
19   publicpublic is used to indicate unrestricted access (any other class can have access) ColoredRectanglesMP() {open braces start code blocks and must be matched with a close brace
20     super();
21     setNumberOfPlayers(2);
22     players =this assignment operator makes the left side equal to the right side 2;
23   }close braces end code blocks and must match an earlier open brace
24 
25   /**
26    * Advance one frame: iterate through all players looking forfor is a looping structure for repeatedly executing a block of code mouse
27    * clicks. If there is a mouse click, create a random rectangle
28    * centered at click location.
29    */
30   @Override
31   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 dT) {open braces start code blocks and must be matched with a close brace
32     forfor is a looping structure for repeatedly executing a block of code (intint is the type for whole numbers and it is short for integer p =this assignment operator makes the left side equal to the right side 0; p !=this is the not equals operator which evaluates to true if both sides are different getNumberOfPlayers(); ++this is the increment operator, which increases the variable by 1p) {open braces start code blocks and must be matched with a close brace
33       Location2D rectangleLocation =this assignment operator makes the left side equal to the right side getClick2D(p);
34 
35       ifif executes the next statement only if the condition in parenthesis evaluates to true (rectangleLocation !=this is the not equals operator which evaluates to true if both sides are different nullnull is the value used to refer to a non-existant object) {open braces start code blocks and must be matched with a close brace// was mouse(p) clicked?
36         RectangleSprite rectangle =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor RectangleSprite(randomDouble(),
37             randomDouble());
38         rectangle.setColor(randomColor());
39         rectangle.setLocation(rectangleLocation);
40         addSprite(rectangle);
41       }close braces end code blocks and must match an earlier open brace
42     }close braces end code blocks and must match an earlier open brace
43   }close braces end code blocks and must match an earlier open brace
44 }close braces end code blocks and must match an earlier open brace
45 
46 //Uploaded on Mon Mar 29 21:40:35 EDT 2010