Grauniad's Random Code Snippets

[Grauniad]

I'm creating this as a repository for code  I played with in CRPLTowers.

Code Select Expand

Once
  ShowTraceLog
   "HelloWorld" Trace
    0 61 RandInt
    Trace
    CurrentCoords 0 0 61 RandInt 1 10 trace5
     CurrentCoords 0 0 61 RandInt 1 10 CreateSpore
Trace5
     "end" Trace
EndOnce


30 Delay


Some debugging framework code

Code Select Expand


Once
  ShowTraceLog
  10  ->Eaten
  5 0 do
     <-Eaten Trace
      <-Eaten 1 sub Eaten
   Loop
EndOnce


[Grauniad]

I'm pretty sure I saw a post from lurkily that claimed the "sub" operation was broken.

I tested the Sub function and it worked just fine with ordinary integers.

In the context of the  "sub" operation removing creeper, it may be a matter of perspective.

Bear in mind that the creeper is deposited (or withdrawn) from a single cell and that it will rapidly flow out from the point of origin (or in towards the point of subtraction) making any operation appear less than effective.

Here is a map that demonstrates creeper at two locations near one another.

[lurkily]

I'm pretty sure I saw a post from lurkily that claimed the "sub" operation was broken.

You did.  I was mistaken.

I parsed the lengthy strip of code into segments separated by parenthesis to illustrate to myself what groups were collapsing into what, and found that I forgot a value required by the 'SetCreeper' function.  This was why sub was failing.  I made the same error in two scripts, even though I hand-typed both.  Since independently written scripts showed the same results, I failed to look rigorously enough for my own mistakes.

I realized my error quickly enough that I took my post down quickly - I wanted to avoid causing any confusion.