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Chess: Fix AI pawn doublestep safe from en passant

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Wuzzy 2023-07-16 09:35:09 +02:00
parent 5e97bd81b7
commit ef65e86547
1 changed files with 9 additions and 0 deletions
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9
src/chess.lua
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@ -2036,6 +2036,15 @@ local function ai_move(inv, meta)
inv:set_stack("board", choice_to, pieceFrom)
end
-- Note the pawn double step
local c_from_x, c_from_y = index_to_xy(choice_from)
local c_to_x, c_to_y = index_to_xy(choice_to)
if pieceFrom:find("pawn") and math.abs(c_from_y - c_to_y) == 2 then
meta:set_int("prevDoublePawnStepTo", choice_to)
else
meta:set_int("prevDoublePawnStepTo", 0)
end
inv:set_stack("board", choice_from, "")
end