Updating the game engine to use Thomas and Bob

In order to be able to run the game and see our new characters, we have to declare instances of them, call their spawn functions, update them each frame, and draw them each frame. Let's do that now.

Updating Engine.h to add an instance of Bob and Thomas

Open up the Engine.h file and add the highlighted lines of code, as shown in the following:

#pragma once 
#include <SFML/Graphics.hpp> 
#include "TextureHolder.h" 
#include "Thomas.h"
#include "Bob.h" 
 
using namespace sf; 
 
class Engine 
{ 
private: 
   // The texture holder 
   TextureHolder th; 
 
   // Thomas and his friend, Bob
   Thomas m_Thomas;
   Bob m_Bob; 
 
   const int TILE_SIZE = 50; 
   const int VERTS_IN_QUAD = 4; 
   ... 
   ... 

Now we have an instance of both Thomas and Bob, which are derived from PlayableCharacter.

Updating the input function to control Thomas and Bob

Now we will add the ability to control the two characters. This code...