default boolean maskConnectsStraightCenter(int s) {
        return (getConnMap() & 0x1000000L << s) != 0;
    }
Full block connection mask
<p>
0000 0000 EEEE WWWW SSSS NNNN UUUU DDDD | 00FF FFFF EEEE WWWW SSSS NNNN UUUU DDDD
<p>
For a full block, you can connect through all 6 sides, with 5 connections on each side. (1 through center, and 4 edges)
<p>
First 8 nibbles, straight connections, of nibble of 1 << r where r is a Rotation.rotationTo(blockSide, edgeSide)
D - Down
U - Up
N - North
S - South
W - West
E - East
F - Straight connections to center part or another full block
<p>
Second 8 nibbles, corner face connections:
D - Down
U - Up
N - North
S - South
W - West
E - East
core/src/main/java/mrtjp/projectred/core/tile/IConnectableBlockEntity.java