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Learning Qlik Sense: The Official Guide

Learning Qlik Sense: The Official Guide

By : Christopher Ilacqua, Henric Cronström, James Richardson
3 (14)
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Learning Qlik Sense: The Official Guide

Learning Qlik Sense: The Official Guide

3 (14)
By: Christopher Ilacqua, Henric Cronström, James Richardson

Overview of this book

Learning Qlik® Sense is for anyone seeking to understand and utilize the revolutionary new approach to business intelligence offered by Qlik Sense. Familiarity with the basics of business intelligence will be helpful when picking up this book, but not essential.
Table of Contents (14 chapters)
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Preface
Preface
What is a game engine anyway?
What will using UE4 cost me?
Why don't I just program my own engine and save the 5 percent?
A game's overview – the Play-Reward-Growth loop
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Coding with C++
1. Coding with C++
Setting up our project
Creating your first C++ program
What is building and compiling?
Summary
2
2. Variables and Memory
2. Variables and Memory
Variables
Summary
3
3. If, Else, and Switch
3. If, Else, and Switch
Branching
Controlling the flow of your program
Using logical operators
Our first example with Unreal Engine
Summary
4
4. Looping
4. Looping
The while loop
The do/while loop
The for loop
Looping with Unreal Engine
Summary
5
5. Functions and Macros
Functions
An example of a <cmath> library function – sqrt()
Writing our own functions
Functions with arguments
Functions that return values
Variables, revisited
Macros
Macros with arguments
Summary
6
6. Objects, Classes, and Inheritance
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6. Objects, Classes, and Inheritance
struct objects
class versus struct
Getters and setters
Constructors and destructors
Class inheritance
Multiple inheritance
Putting your classes into headers
Summary
7
7. Dynamic Memory Allocation
7. Dynamic Memory Allocation
Dynamic memory allocation
Regular arrays
C++ style dynamic size arrays (new[] and delete[])
Dynamic C-style arrays
Summary
8
8. Actors and Pawns
8. Actors and Pawns
Actors versus pawns
Creating a world to put your actors in
The UE4 editor
Starting from scratch
Adding an actor to the scene
Creating a player entity
Writing C++ code that controls the game's character
Creating non-player character entities
Displaying a quote from each NPC dialog box
Summary
9
9. Templates and Commonly Used Containers
9. Templates and Commonly Used Containers
Debugging the output in UE4
UE4's TArray<T>
TSet<T>
TMap<T, S>
C++ STL versions of commonly used containers
Summary
10
10. Inventory System and Pickup Items
10. Inventory System and Pickup Items
Declaring the backpack
Base class PickupItem
Drawing the player inventory
Summary
11
11. Monsters
11. Monsters
Landscape
Monsters
Monster attacks on the player
Summary
12
12. Spell Book
12. Spell Book
The particle systems
Spell class actor
Attaching right mouse click to cast spell
Creating other spells
Summary
13
Index
Index

Constructors and destructors

The constructor in your C++ code is a simple little function that runs once when the C++ object is first created. The destructor runs once when the C++ object is destroyed. Say we have the following program:

#include <iostream>
#include <string>
using namespace std;
class Player
{
private:
  string name;  // inaccessible outside this class!
public:
  string getName(){ return name; }
// The constructor!
  Player()
  {
    cout << "Player object constructed" << endl;
    name = "Diplo";
  }
  // ~Destructor (~ is not a typo!)
  ~Player()
  {
    cout << "Player object destroyed" << endl;
  }
};

int main()
  {
    Player player;
    cout << "Player named '" << player.getName() << "'" << endl;
  }
  // player object destroyed here

So here we have created a Player object. The output of this code will be as follows:

Player object constructed
Player...

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