I was bored, so I decided to make a weapon changing mechanic as well.
Press 1 to Dual Wield swords.
Press 2 to go back to sword and shield.
I changed the "Q" and "E" to left click and right click, to the weapons in the player's perspective (left is shield, right is sword; left is left sword, right is right sword)

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UPDATE!
Fixed a glitch that made the engine run out of resources when the weapon switches were overwhelming the system, and also making the camera freeze when 1 or 2 was pressed. :D
As soon as I figure out how to apply this to slaying monsters in the FPS dungeon, I'll do something with this. If someone wants to go at it first, since I showed the source for this, then by all means, go for it!