To deploy your troops, click on the cards on the right side of the arena. To send a message to your opponent, click on the speech bubble on the bottom left. I know it doesn't seem like it, but this was very hard to code and took me a very long time. If you want to see all the code it took got to see inside.
Credit to supercell, for Clash Royale. While coding, I had SERIOUS computer and internet glitches, but I finished it!
