Octoshield update 2: Better controls, arena update and defense mode

Hi! I pushed a new update to Octoshield, here are the changes: - You now have actual Vive controllers instead of boring spheres. - You can now use the trigger buttons (the two things at the sides of the Vive controller) to grab the shield. Some people wanted to try playing that way - The arena's design has been updated. Exit the big grid that was probably hurting your eyes and the visibility. - You can switch the shield holding mode. There is defense mode and throwing mode. Defense mode puts the shield on your arm to properly reflect attacks, while throwing mode holds the shield from the edge, allowing you to launch it more naturally. You can switch mode by pressing the trackpad with your thumb. Hope you're happy with those new things!