spec.md

Spec

Prelude

Lines:

1. Input points as coordinates. Style: [[x,y],[x1,y1], ...]
2. Output points as coordinates. Same style.
3. Lazy point values. Style: [[x,y,b], ...]

Tracks

Can be one of the following(requires padding):

    
### 
   

 # 
 # 
 # 

 # 
## 
   

   
 ##
 # 

 # 
 ##
   

   
## 
 # 

Turns can be sharper, but it is recommended to keep all tracks 3x3 in order for readability.

Lazy Points

The storage mechanism.

Requires a 1/0 starter value from Prelude.

Tile style:

 
P##
 #

In any rotated form.

where P stands for pushable. It is allowed to put it on either side. instead of being a switch, the train must push it till an intersection is reached, a slight complication over the original idea.

Sprung points

The method of constructing subroutines.

Tile Style:

##S
 # 

In any rotated form.

Where S can be on any direction in the T.

Program end

When the train:

• reaches a dead end
• encounters an invalid track
• returns to the start point it will immediately halt.