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Fix crash if AI has no moves left

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This commit is contained in:
Wuzzy 2023-07-12 08:54:30 +02:00
parent fdcb958f37
commit 92bcdbc717
1 changed files with 8 additions and 1 deletions
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9
src/chess.lua
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@ -533,6 +533,9 @@ local function best_move(moves)
end
end
if #choices == 0 then
return -1, -1
end
local random = math.random(1, #choices)
local choice_from, choice_to = choices[random].from, choices[random].to
@ -1580,6 +1583,10 @@ local function ai_move(inv, meta)
end
local choice_from, choice_to = best_move(moves)
if choice_from == -1 then
-- No best move: stalemate or checkmate
return
end
local pieceFrom = inv:get_stack("board", choice_from):get_name()
local pieceTo = inv:get_stack("board", choice_to):get_name()
@ -1625,7 +1632,7 @@ local function ai_move(inv, meta)
local lastMoveTime = meta:get_int("lastMoveTime")
if lastMoveTime > 0 then
if not kingSafe then
if bestMoveSaveTo then
if bestMoveSaveTo ~= -1 then
inv:set_stack("board", bestMoveSaveTo, board[bestMoveSaveFrom])
inv:set_stack("board", bestMoveSaveFrom, "")
meta:set_string("blackAttacked", "")