Using the background

We have done the tricky stuff, this will be simple. There are three steps:

1. Create a VertexArray.

2. Initialize it after leveling up each wave.

3. Draw it in each frame.

Add the code highlighted in the following to declare a VertexArray called background and load the background_sheet.png as a texture:

// Create an instance of the Player class 
Player player; 
 
// The boundaries of the arena 
IntRect arena; 
 
// Create the backgroundVertexArray background;
// Load the texture for our background vertex array
Texture textureBackground;
textureBackground.loadFromFile("graphics/background_sheet.png"); 
 
// The main game loop 
while (window.isOpen()) 

Add the following code to call the createBackground function, passing in background as a reference and arena by value. Notice in the highlighted code that we have also modified the way that we initialize the tileSize variable. Add the highlighted code exactly as shown:

if...