Making the bullets fly

We will make the bullets usable by following these six steps:

1. Add the necessary include directive for the Bullet class.
2. Add some control variables and an array to hold some Bullet instances.
3. Handle the player pressing R to reload.
4. Handle the player pressing the left mouse button to fire a bullet.
5. Update all bullets that are in flight in each frame.
6. Draw the bullets that are in flight in each frame.

Including the Bullet class

Add the include directive to make the Bullet class available:

#include <SFML/Graphics.hpp>
#include "ZombieArena.h"
#include "Player.h"
#include "TextureHolder.h"
#include "Bullet.h"
using namespace sf;

Let's move on to the next step.

Control variables and the bullet array

Here are some variables to keep track of clip sizes, spare bullets, bullets, the remaining bullets in the clip, the current rate of fire (starting at one per second), and...