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Beginning C++ Game Programming by John Horton

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Creating a randomly generated scrolling background

We will create the function that makes a background in a separate file. We will ensure the background will be available (in scope) to the main function by using a vertex array reference.

As we will be writing other functions that share data with the main function, we will write them all in their own .cpp files. We will provide prototypes for these functions in a new header file that we will include (with an include directive) in ZombieArena.cpp.

To achieve this, let's first make the new header file. Right-click Header Files in the Solution Explorer and select Add | New Item.... In the Add New Item window, highlight (by left-clicking) Header File (.h), and then in the Name field type ZombieArena.h ...

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