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H. G. Muller wrote on Thu, Jul 23, 2020 05:59 PM UTC:

It is true that XBetza uses directions and relative directions a lot. But the Diagram script already translates that to absolute grid vectors in a compilation step. The legdefs array is almost exactly what the Diagram uses as internal representation (except that dx, dy, range and mode there each have their own array, but that is a minor detail). So the only thing it has to do when someone would hit the would-be button 'Show GAME code' would be to dump those tables for the pieces that were chosen to participate in the desired format, and remember where the data for each piece started. It can be easily checked during the Betza-to-table compilation whether a piece is totally symmetric. (Not done yet; the Diagram only makes tables for white pieces during the compilation, and when it later generates moves for black pieces, it just flips the sign of all step vectors it retrieves from the table. But it seems faster to tabulate the black pieces separately, flipping their steps already in the table, if they were asymmetric.)


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