Logging Variables Using UE_LOG

In Chapter 11, Blend Spaces 1D, Key Bindings, and State Machines, we used and learned about the UE_LOG function in order to log when the player should throw the projectile. We then used the UE_LOG function in Chapter 13, Enemy Artificial Intelligence, to log when the player projectile hit an object. UE_LOG is a robust logging tool we can use to output important information from our C++ functions into the Output Log window inside the editor when playing our game. Up until this point, we have only logged FStrings to display general text in the Output Log window to know that our functions were being called. Now, it is time to learn how to log variables in order to debug how many coins the player has collected.

Note

There is another useful debug function available in C++ with Unreal Engine 4, known as AddOnScreenDebugMessage. You can learn more about this function here: https://docs.unrealengine.com/en-US/API/Runtime/Engine/Engine/UEngine/AddOnScreenDebugMessage...