Growing the branches

Next, as I have been promising for the last 20 pages, we will use all the new C++ techniques we've learned about to draw and move some branches on our tree.

Add the following code outside of the main function. Just to be absolutely clear, I mean before the code for int main():

#include <sstream>
#include <SFML/Graphics.hpp>
using namespace sf;
// Function declaration
void updateBranches(int seed);
const int NUM_BRANCHES = 6;
Sprite branches[NUM_BRANCHES];
// Where is the player/branch?
// Left or Right
enum class side { LEFT, RIGHT, NONE };
side branchPositions[NUM_BRANCHES];
int main()

We just achieved quite a few things with that new code:

• First, we wrote a function prototype for a function called updateBranches. We can see that it does not return a value (void) and that it takes an int argument called seed. We will write the function definition soon, and we will then see exactly what it does.
• Next, we declare an int constant...