Starting Out with C++ from Control Structures to Objects (9th Edition)
9th Edition
ISBN: 9780134498379
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 14.5, Problem 14.25CP
If an overloaded ≪ or ≫ operator accesses a private member of a class. What must be done in that class’s declaration?
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Change the following code so that there is always at least one way to get from the left corner to the top right, but the labyrinth is still randomized.
The player starts at the bottom left corner of the labyrinth. He has to get to the top right corner of the labyrinth as fast he can, avoiding a meeting with the evil dragon. Take care that the player and the dragon cannot start off on walls. Also the dragon starts off from a randomly chosen position
public class Labyrinth { private final int size; private final Cell[][] grid;
public Labyrinth(int size) { this.size = size; this.grid = new Cell[size][size]; generateLabyrinth(); }
private void generateLabyrinth() { Random rand = new Random(); for (int i = 0; i < size; i++) { for (int j = 0; j < size; j++) { // Randomly create walls and paths grid[i][j] = new Cell(rand.nextBoolean()); } } // Ensure start and end are…
Change the following code so that it checks the following 3 conditions:
1. there is no space between each cells (imgs)
2. even if it is resized, the components wouldn't disappear
3. The GameGUI JPanel takes all the JFrame space, so that there shouldn't be extra space appearing in the frame other than the game.
Main():
Labyrinth labyrinth = new Labyrinth(10);
Player player = new Player(9, 0); Dragon dragon = new Dragon(9, 9);
JFrame frame = new JFrame("Labyrinth Game"); GameGUI gui = new GameGUI(labyrinth, player, dragon);
frame.add(gui); frame.setSize(600, 600); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true);
public class GameGUI extends JPanel { private final Labyrinth labyrinth; private final Player player; private final Dragon dragon; //labyrinth, player, dragon are just public classes
private final ImageIcon playerIcon = new ImageIcon("data/images/player.png");…
Make the following game user friendly with GUI, with some simple graphics. The GUI should be in another seperate class, with some ImageIcon, and Game class should be added into the pane.
The following code works as this: The objective of the player is to escape from this labyrinth. The player starts at the bottom left corner of the labyrinth. He has to get to the top right corner of the labyrinth as fast he can, avoiding a meeting with the evil dragon. The player can move only in four directions: left, right, up or down. There are several escape paths in all labyrinths. The player’s character should be able to moved with the well known WASD keyboard buttons. If the dragon gets to a neighboring field of the player, then the player dies. Because it is dark in the labyrinth, the player can see only the neighboring fields at a distance of 3 units.
Cell Class:
public class Cell { private boolean isWall; public Cell(boolean isWall) { this.isWall = isWall; } public boolean isWall() { return…
Chapter 14 Solutions
Starting Out with C++ from Control Structures to Objects (9th Edition)
Ch. 14.2 - What is the difference between an instance member...Ch. 14.2 - Static member variables are declared inside the...Ch. 14.2 - Does a static member variable come into existence...Ch. 14.2 - What limitation does a static member function...Ch. 14.2 - What action is possible with a static member...Ch. 14.2 - If class X declares function f as a friend, does...Ch. 14.2 - Class Y is a friend of class X, which means the...Ch. 14.4 - Briefly describe what is meant by memberwise...Ch. 14.4 - Prob. 14.9CPCh. 14.4 - Prob. 14.10CP
Ch. 14.4 - When is a copy constructor called?Ch. 14.4 - How does the compiler know that a member function...Ch. 14.4 - What action is performed by a classs default copy...Ch. 14.5 - Assume there is a class named Pet. Write the...Ch. 14.5 - Assume dog and cat are instances of the Pet class,...Ch. 14.5 - What is the disadvantage of an overloaded =...Ch. 14.5 - Prob. 14.17CPCh. 14.5 - The this pointer is automatically passed to what...Ch. 14.5 - Assume there is a class named Animal that...Ch. 14.5 - Prob. 14.20CPCh. 14.5 - Describe the values that should be returned from...Ch. 14.5 - Prob. 14.22CPCh. 14.5 - What type of object should an overloaded operator...Ch. 14.5 - What type of object should an overloaded operator...Ch. 14.5 - If an overloaded or operator accesses a private...Ch. 14.5 - Prob. 14.26CPCh. 14.6 - When overloading a binary operator such as + or ...Ch. 14.6 - Explain why overloaded prefix and postfix ++ and ...Ch. 14.6 - Prob. 14.29CPCh. 14.6 - Write member functions of the FeetInches class...Ch. 14.8 - What are the benefits of having operator functions...Ch. 14.8 - Prob. 14.32CPCh. 14.8 - Assume there is a class named BlackBox. Write the...Ch. 14.8 - Assume there are two classes, Big and Small. The...Ch. 14 - Describe the difference between an instance member...Ch. 14 - Assume a class named Numbers has the following...Ch. 14 - A static member variable is declared in a class....Ch. 14 - Prob. 4RQECh. 14 - Why is it not always a good idea to make an entire...Ch. 14 - What is memberwise assignment?Ch. 14 - When is a copy constructor called?Ch. 14 - How can the compiler determine if a constructor is...Ch. 14 - Describe a situation where memberwise assignment...Ch. 14 - Why must the parameter of a copy constructor be a...Ch. 14 - What is a default copy constructor?Ch. 14 - Why would a programmer want to overload operators...Ch. 14 - What is passed to the parameter of a classs...Ch. 14 - Why shouldnt a classs overloaded = operator be...Ch. 14 - How does the compiler know whether an overloaded...Ch. 14 - Prob. 16RQECh. 14 - What type of value should be returned from an...Ch. 14 - The class Stuff has both a copy constructor and an...Ch. 14 - Explain the programming steps necessary to make a...Ch. 14 - Explain the programming steps necessary to make a...Ch. 14 - Consider the following class declaration: class...Ch. 14 - Describe the difference between making a class a...Ch. 14 - What is the purpose of a forward declaration of a...Ch. 14 - Explain why memberwise assignment can cause...Ch. 14 - Why is a classs copy constructor called when an...Ch. 14 - If a member variable is declared ______________,...Ch. 14 - Static member variables are defined __________ the...Ch. 14 - A(n) __________ member function cannot access any...Ch. 14 - A static member function may be called __________...Ch. 14 - A(n) __________ function is not a member of a...Ch. 14 - A(n) _________ tells the compiler that a specific...Ch. 14 - Prob. 32RQECh. 14 - A(n) _________ is a special constructor, called...Ch. 14 - is aspecial built-in pointer that is automatically...Ch. 14 - An operator may beto work with a specific class.Ch. 14 - When overloading the ________ operator, its...Ch. 14 - Making an instance of one class a member of...Ch. 14 - Object aggregation is useful for creating a(n)...Ch. 14 - Assume a class named Bird exists. Write the header...Ch. 14 - Assume a class named Dollars exists. Write the...Ch. 14 - Assume a class named Yen exists. Write the header...Ch. 14 - Assume n class named Length exists. Write the...Ch. 14 - Assume a class named Collection exists. Write the...Ch. 14 - T F Static member variables cannot be accessed by...Ch. 14 - T F Static member variables are defined outside...Ch. 14 - T F A static member function may refer to...Ch. 14 - T F When a function is declared a friend by a...Ch. 14 - T F A friend function has access to the private...Ch. 14 - T F An entire class may be declared a friend of...Ch. 14 - T F In order for a function or class to become a...Ch. 14 - T F If a class has a pointer as a member, its a...Ch. 14 - T F You cannot use the = operator to assign one...Ch. 14 - T F If a class doesnt have a copy constructor, the...Ch. 14 - T F If a class has a copy constructor, and an...Ch. 14 - T F The this pointer is passed to static member...Ch. 14 - T F All functions that overload unary operators...Ch. 14 - T F For an object to perform automatic type...Ch. 14 - T F It is possible to have an instance of one...Ch. 14 - class Box { private: double width; double length;...Ch. 14 - class Circle { private: double diameter; int...Ch. 14 - class Point { private: int xCoord; int yCoord;...Ch. 14 - class Box { private: double width; double length:...Ch. 14 - class Yard { private: float length; public:...Ch. 14 - Prob. 1PCCh. 14 - Day of the Year Assuming a year has 365 days,...Ch. 14 - Day of the Year Modification Modify the DayOfYear...Ch. 14 - NumDays Class Design a class called NumDays. The...Ch. 14 - Prob. 5PCCh. 14 - Personnel Report NOTE: This assignment assumes you...Ch. 14 - Month Class Design a class named Month. The class...Ch. 14 - Date Class Modification Modify the Date class in...Ch. 14 - Feetlnches Modification Modify the Feetlnches...Ch. 14 - Corporate Sales A corporation has six divisions,...Ch. 14 - FeetInches Class Copy Constructor and multiply...Ch. 14 - LandTract Class Make a LandTract class that is...Ch. 14 - Carpet Calculator The Westfield Carpet Company has...Ch. 14 - Parking Ticket Simulator For this assignment, you...Ch. 14 - Car Instrument Simulator For this assignment you...
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