Some major improvements and lots of bugfixes.

Improvements made.
- Added Vcc (Main power + ) and Gnd (Main power -) to the logic gates to indicate where they are getting their power to work even without input connections.
- There is also a difficulty setting set up that you can toggle that will pop random input signals when the inputs are not connected.
- Logic gates are activated properly when their inputs are unwired.

Did some major bug fixing.

- The collision checks and pushing of objects are now working properly and you can't move unmovable objects any more.
- Quite a lot of small bug fixes made too in audio system, detecting correct wiring and a lot more.