Question

JAVA - Programming Exercise 10-5.

The developers of a free online game named Sugar Smash have asked you to develop a class named SugarSmashPlayer that holds data about a single player. The class contains the following fields: idNumber - the player’s ID number (of type int) name - the player's screen name (of type String) scores - an array of integers that stores the highest score achieved in each of 10 game levels Include get and set methods for each field. The get method for scores should require the game level to retrieve the score for. The set method for scores should require two parameters—one that represents the score achieved and one that represents the game level to be retrieved or assigned. Display an error message if the user attempts to assign or retrieve a score from a level that is out of range for the array of scores. Additionally, no level except the first one should be set unless the user has earned at least 100 points at each previous level. If a user tries to set a score for a level that is not yet available, issue an error message. Create a class named PremiumSugarSmashPlayer that descends from SugarSmashPlayer. This class is instantiated when a user pays $2.99 to have access to 40 additional levels of play. As in the free version of the game, a user cannot set a score for a level unless the user has earned at least 100 points at all previous levels.

Answer 1

SOLUTION-
I have solve the problem in python code with comments and screenshot for easy understanding :)

CODE-

PremiumSugarSmashPlayer.java

//Create a class PremiumSugarSmashPlayer which extends
//the parent class SugarSmashPlayer
public class PremiumSugarSmashPlayer extends SugarSmashPlayer
{
   //instance variables
   private int[] scores=new int[40];
   private boolean accessLevel;
   //Constructor that sets pay value
   public PremiumSugarSmashPlayer(double pay)
   {    
       //Check if pay is pay $2.99 to access all levels
       if(pay>=2.99)
       {
           accessLevel=true;
       }
       else
       {
           //Otherwise set accesLevel to false
           accessLevel=false;
       }
   }

   //implement the mutator method to set the score
   public void setScore(int score, int gameLevel)
   {
       //Check if user has accessLevel
       if(accessLevel)
       {
           if(gameLevel<0 ||gameLevel>scores.length)
           {
               System.out.println("Invalid Game level");
           }
           else
           {
               scores[gameLevel]=score;
           }    
       }
       else
       {
           System.out.println("Pay 2.99 to access levels:\n");
       }
   }
   //Returns score at given game level
   public int getScore(int gameLevel)
   {
       if(gameLevel>=0 && gameLevel<scores.length )
       {
           return scores[gameLevel];
       }
       else
       {
           System.out.println("Invalid Game Level");
           return -1;
       }    
   }
}

SugarSmashPlayer.java

//SugarSmashPlayer.java
public class SugarSmashPlayer
{
   //instance variables ID, screenName
   private int idNumber;
   private String name;
   //Create an array of size 10 for 10 levels
   private int[] scores=new int[10];

   //implement the method to set the score at gameLevel
   public void setScore(int score, int gameLevel)
   {
       //Define the boolean variable
       boolean validScores=false;
            
       //Set score at index=0 if gameLevel is 0
       if(gameLevel==0)
       {
           scores[0]=score;
       }        
       else
       {
           //check the userscore
           for (int index = 0; index < gameLevel
                   && !validScores;
                   index++)
           {
               if(scores[index]>100)
               {
                   validScores=true;
               }                
           }        
           //Set score to gameLevel
           if(validScores)
           {
               scores[gameLevel]=score;
           }
           else
           {
               /*Otherwise set score at index=0 and print
               a message invalid score */
               scores[0]=score;
               System.out.println("Invalid score ");
           }
       }

   }//end of setScore

   //Implement method to get the Score
   public int getScore(int gameLevel)
   {
       if(gameLevel>=0 && gameLevel<scores.length)
       {
           return scores[gameLevel];
       }
       else
       {
           System.out.println("Invalid game level");
           return -1;
       }    
   }

   //Method to set ID number
   public void setID(int ID)
   {
       this.idNumber=ID;
   }
   //Method to get ID number
   public int getID()
   {
       return idNumber;
   }
   //Set screen name
   public void setScreenName(String screenName)
   {
       this.name=screenName;
   }
   //Returns screen Name
   public String getScreenName()
   {
       return name;
   }
}//end of the SugarSmashPlayer

-----------------------------------------------------------------------------------------

DemoSugarSmash.java

//DemoSugarSmash.java
public class DemoSugarSmash
{
   public static void main(String[] args)
   {
       System.out.println("SugarSmashPlayer Class Object1: ");
       //Create an instance of SugarSmashPlayer
       SugarSmashPlayer sugarPlayer=new SugarSmashPlayer();
    
       //set the screen name
       sugarPlayer.setScreenName("Black");
       //set the ID    
       sugarPlayer.setID(1111);
    
       //Set score less than 100 at game level=0
       //Print an error message since score <100
       sugarPlayer.setScore(50, 0);
    
       //Set score less than 100 at game level=1
       //Print an error message since score <100
       sugarPlayer.setScore(70, 1);
    
       //Set score less than 100 at game level=2
       sugarPlayer.setScore(120, 2);

       System.out.println("SugarPlayer Name: "
       +sugarPlayer.getScreenName());
       System.out.println("SugarPlayer ID: "
       +sugarPlayer.getID());
       System.out.println("Score : "
                   +sugarPlayer.getScore(0));
       //Other scores are set to zero
       System.out.println("Score : "
                   +sugarPlayer.getScore(1));
       System.out.println("Score : "
                   +sugarPlayer.getScore(2));

       System.out.println();          
       System.out.println("PremiumSugarSmashPlayer Class Object1: ");
       PremiumSugarSmashPlayer premiumPlayer1=
               new PremiumSugarSmashPlayer(2.00);

       //Set score to level 0 given an error message
       premiumPlayer1.setScore(15, 0);    
       premiumPlayer1.setID(1234);
    
       //set the screen Name
       premiumPlayer1.setScreenName("Blue");    
       System.out.println("PremiumSugarSmashPlayer ID: "
               +premiumPlayer1.getID());
    
       System.out.println("PremiumSugarSmashPlayer Name: "
               +premiumPlayer1.getScreenName());
    
       System.out.println("PremiumSugarSmashPlayer Score: "
               +premiumPlayer1.getScore(0));
    
       System.out.println("\nPremiumSugarSmashPlayer Class Object2:");
       //Create an instance of PremiumSugarSmashPlayer
       //with pay $3 dollars
       PremiumSugarSmashPlayer premiumPlayer=
               new PremiumSugarSmashPlayer(3.00);

       //Set id for the Premium player
       premiumPlayer.setID(321);            
       premiumPlayer.setScreenName("Thrones");
       //Set scores to any level
       premiumPlayer.setScore(15, 0);
       premiumPlayer.setScore(50, 1);
       premiumPlayer.setScore(20, 2);    
    
       System.out.println("PremiumSugarSmashPlayer ID: "
               +premiumPlayer.getID());    
       System.out.println("PremiumSugarSmashPlayer Name: "
               +premiumPlayer.getScreenName());    
       System.out.println("Premium User score who pay $3");
       System.out.println("Score : "
               +premiumPlayer.getScore(0));
       System.out.println("Score : "
               +premiumPlayer.getScore(1));
       System.out.println("Score : "
               +premiumPlayer.getScore(2));
   }//end of main method
}//end of the class

SCREENSHOT-

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