Lock-On Turrets!

Hey, guys, today I have another creation for you: lock-on turrets. lock-on turrets are turrets you can put anywhere that will fire at the nearest player. It only took me a few minutes to make because all necessary calculations could already be performed by my black hole creation. All I needed to do was get rid of a few command blocks and rearrange some stuff. Once that was done, boom, turrets that, in my opinion, look pretty freaking awesome! There's also a mode for heat-seeking turrets which will follow the player! If you guys enjoyed this creation, a diamond would be much appreciated. Thanks, guys! :D