Check out Chess with Different Armies, our featured variant for July, 2024.

Enter Your Reply

The Comment You're Replying To
H. G. Muller wrote on Thu, May 9 07:11 AM UTC in reply to Daniel Zacharias from Sun May 5 08:43 PM:

Should I be able to use $dest to get the destination square before HandleMove runs?

I suppose not, because to work with betza.txt the preset has the "do not add moves" checkbox ticked, so that Game Courier does not handle the move itself before it invokes to the Post-Move code. And I suppose $dest would be set during GC's handling of that move.

I am not even sure this variable would be set after HandleMove returns. At some point HandleMove passes the move to GC with the aid of an "eval MOVE: xxx" statement, but I am not sure whether this is equivalent to latting the move be handled automatically.

But HandleMove has its own variables to describe the move: #ori, #desti, #moved and #victim, which will be set after HandleMove returns. And for side effects: #promo, #suicide, #freedrop and #dropped. When not applicable the first three will have value 0, and #dropped will be undefined if #freedrop is invalid.

Anyway, HandleMove true starts with calling ParseMove true. This extracts the values for all these parameters in so far these were explicitly specified by the move notation. Implide side effects are then derived by generating all moves of the indicated piece, and match those with the move parameters that were given in the input notation. If there is a match it then takes the additional parameters from the generated move (such as #suicide when the move was an e.p. capture).

So in a code section where HandleMove is not useful (e.g. because you are in the prelude), and you don't feel like parsing the 'move' that the player entered yourself, you could call ParseMove if the syntax of what the player was supposed to enter is compatible with that of normal moves.


Edit Form

Comment on the page A Wizard for GAME-Code Generation

Conduct Guidelines
This is a Chess variants website, not a general forum.
Please limit your comments to Chess variants or the operation of this site.
Keep this website a safe space for Chess variant hobbyists of all stripes.
Because we want people to feel comfortable here no matter what their political or religious beliefs might be, we ask you to avoid discussing politics, religion, or other controversial subjects here. No matter how passionately you feel about any of these subjects, just take it someplace else.
Avoid Inflammatory Comments
If you are feeling anger, keep it to yourself until you calm down. Avoid insulting, blaming, or attacking someone you are angry with. Focus criticisms on ideas rather than people, and understand that criticisms of your ideas are not personal attacks and do not justify an inflammatory response.
Quick Markdown Guide

By default, new comments may be entered as Markdown, simple markup syntax designed to be readable and not look like markup. Comments stored as Markdown will be converted to HTML by Parsedown before displaying them. This follows the Github Flavored Markdown Spec with support for Markdown Extra. For a good overview of Markdown in general, check out the Markdown Guide. Here is a quick comparison of some commonly used Markdown with the rendered result:

Top level header: <H1>

Block quote

Second paragraph in block quote

First Paragraph of response. Italics, bold, and bold italics.

Second Paragraph after blank line. Here is some HTML code mixed in with the Markdown, and here is the same <U>HTML code</U> enclosed by backticks.

Secondary Header: <H2>

  • Unordered list item
  • Second unordered list item
  • New unordered list
    • Nested list item

Third Level header <H3>

  1. An ordered list item.
  2. A second ordered list item with the same number.
  3. A third ordered list item.
Here is some preformatted text.
  This line begins with some indentation.
    This begins with even more indentation.
And this line has no indentation.

Alt text for a graphic image

A definition list
A list of terms, each with one or more definitions following it.
An HTML construct using the tags <DL>, <DT> and <DD>.
A term
Its definition after a colon.
A second definition.
A third definition.
Another term following a blank line
The definition of that term.