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Chess: Fix crash if AI is in check

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This commit is contained in:
Wuzzy 2023-07-14 22:42:26 +02:00
parent e316e77846
commit cede0534eb
1 changed files with 4 additions and 3 deletions
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7
src/chess.lua
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@ -723,6 +723,7 @@ end
-- Given a table of theoretical moves and the king of the player is attacked, -- Given a table of theoretical moves and the king of the player is attacked,
-- returns true if the player still has at least one move left, -- returns true if the player still has at least one move left,
-- return false otherwise. -- return false otherwise.
-- 2nd return value ist table of save moves
-- * theoretical_moves: moves table returned by get_theoretical_moves_for() -- * theoretical_moves: moves table returned by get_theoretical_moves_for()
-- * board: board table -- * board: board table
-- * player: player color ("white" or "black") -- * player: player color ("white" or "black")
@ -752,7 +753,7 @@ local function has_king_safe_move(theoretical_moves, board, player)
end end
if next(save_moves) then if next(save_moves) then
return true return true, save_moves
else else
return false return false
end end
@ -1841,9 +1842,9 @@ local function ai_move(inv, meta)
if aiAttacked then if aiAttacked then
kingSafe = false kingSafe = false
meta:set_string(aiColor.."Attacked", "true") meta:set_string(aiColor.."Attacked", "true")
local is_safe = has_king_safe_move(moves, board, aiColor) local is_safe, safe_moves = has_king_safe_move(moves, board, aiColor)
if is_safe then if is_safe then
bestMoveSaveFrom, bestMoveSaveTo = best_move(save_moves) bestMoveSaveFrom, bestMoveSaveTo = best_move(safe_moves)
end end
end end