Rule:SlideConstruct

@RULE SlideConstruct

Universal Construction and Computation within 4 states. Uses a Moore neighborhood.

Quite simple as it has only 20 transitions! @TABLE n_states:4 neighborhood:Moore symmetries:rotate4reflect var a = {0,1,2,3} var b = a var c = a var d = a var e = a var f = a var g = a var h = a var p = {0,3} var q = p var r = p var s = p var t = p

1. Retract

3,2,2,0,0,0,a,3,0,2

1. Turn

1,2,3,2,a,b,c,0,0,3 2,1,2,3,0,0,0,0,0,3

1. Build

0,0,1,3,1,0,p,q,r,1 3,p,2,1,2,q,r,s,t,2 0,p,2,1,2,q,r,s,t,3

1. Extend

0,3,0,2,2,3,1,0,0,3

1. Gate

0,3,1,3,a,3,b,c,d,2 0,0,3,3,0,1,2,0,a,2 0,a,3,3,1,1,3,3,3,2 0,3,1,2,a,b,c,d,e,2

1. Propagation

0,a,3,3,a,1,b,c,d,1 0,3,3,1,a,b,c,d,e,1 0,a,3,3,1,b,c,d,e,1 0,1,3,a,b,c,d,e,0,2 0,1,3,a,b,c,d,e,2,2 1,a,b,c,d,e,f,g,h,2 2,a,b,c,d,e,f,g,h,0

1. Photon?

0,1,1,0,a,b,c,0,0,1 0,1,1,0,a,b,c,0,3,1

@COLORS 0 0 0 0 1 255 255 0 2 0 0 255 3 255 255 255