I am wondering if it would be possible to convert the code from this link (8x8 code for the game stacker)
into a code for a 4x4 matrix)
Original Code : http://kevin.mcmill.in/does/stacker.ino
This is on the Arduino Uno (pic of the wiring)
Here is what i have edited it to so far
and what happens with the first level for starters is that the led on the last column does not light up but it should be going over to a fourth column because on the furthest most left side it takes a little longer before getting back. Any help with adjusting the code to work with 4x4 would be nice.
When you multiplex leds, only so many can be lit at any one moment. The best you can do is try and get the leds all to the same brightness with extra code.
If you connect the 16 leds to 2 output shift registers (2 8-bit chips or 1 16-bit) then you can pump 2 bytes into them to set every led as desired up to full bright about 100 or so times faster than you can see.
As to which leds to light and the whole game thing, you should probably define in detail how you want every action possible to take to work out. Don't start coding until you have a solid plan.
Buttons, I'd multiplex. Even wrote code for it. Buttons are human-slow except for the bounce.