Chess: Improve draw claim interface
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Wuzzy
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3faa0317da
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9e8474f320
@ -29,6 +29,13 @@ local ENABLE_CHESS_GAMES = true
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-- and enables a "Bot vs Bot" gamemode for testing the bot
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local CHESS_DEBUG = false
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-- Number of consecutive halfmoves in which no pawn was moved
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-- and no piece was captured after which a player can claim a draw.
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local DRAWCLAIM_LONGGAME_PLAYER = 100 -- 50-move rule
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-- Number of consecutive halfmoves in which no pawn was moved
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-- and no piece was captured after which the game draw automatically.
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local DRAWCLAIM_LONGGAME_FORCE = 150 -- 75-move rule
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-- Bot names
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local BOT_NAME = NS("Weak Computer")
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-- Bot names in Bot vs Bot mode
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@ -1757,6 +1764,27 @@ local function update_formspec(meta)
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end
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end
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local drawClaim = meta:get_string("drawClaim")
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local draw_claim_formstring = ""
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if drawClaim ~= "" and gameResult == "" then
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if lastMove == "black" or lastMove == "" then
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draw_claim_formstring = "label[10.1,6.35;"..FS("DRAW CLAIM\nBY WHITE!").."]"
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else
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draw_claim_formstring = "label[10.1,6.35;"..FS("DRAW CLAIM\nBY BLACK!").."]"
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end
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if drawClaim == "50_move_rule" then
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eaten_img = ""
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draw_claim_formstring = draw_claim_formstring ..
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"image[10.05,7.2;2,2;chess_draw_50move_next.png]"..
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"textarea[13,6.35;2.2,3.2;;;"..FS("The player has invoked the 50-move rule for the next move. The next move might draw the game.").."]"
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elseif drawClaim == "same_position_3" then
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eaten_img = ""
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draw_claim_formstring = draw_claim_formstring ..
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"image[10.05,7.2;2,2;chess_draw_repeat3_next.png]"..
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"textarea[13,6.35;2.2,3.2;;;"..FS("The player has invoked the threefold-repetition rule for the next move. The next move might draw the game.").."]"
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end
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end
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-- Resign / Start new game
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local game_buttons = ""
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game_buttons = game_buttons .. "button[13.36,0.26;2,0.8;new;"..FS("New game").."]"
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@ -1768,24 +1796,21 @@ local function update_formspec(meta)
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"tooltip[resign;"..FS("Resign").."]"
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end
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local drawClaim = meta:get_string("drawClaim")
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if playerActionsAvailable and drawClaim == "" then
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-- 50-move rule
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local halfmoveClock = meta:get_int("halfmoveClock")
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if halfmoveClock == 99 then
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if halfmoveClock == DRAWCLAIM_LONGGAME_PLAYER - 1 then
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-- When the 50 moves without capture / pawn move is about to occur.
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-- Will trigger "draw claim" mode in which player must do the final move that triggers the draw
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game_buttons = game_buttons .. "image_button[13.36,9.7;0.8,0.8;chess_draw_50move_next.png;draw_50_moves;]"..
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"tooltip[draw_50_moves;"..
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FS("Invoke the 50-move rule for your next move.").."\n"..
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FS("If invoked and in the next turn, no piece is captured and no pawn is moved, the game will be drawn.").."]"
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elseif halfmoveClock >= 100 then
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FS("Invoke the 50-move rule for your next move").."]"
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elseif halfmoveClock >= DRAWCLAIM_LONGGAME_PLAYER then
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-- When the 50 moves without capture / pawn move have occured occur.
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-- Will insta-draw.
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game_buttons = game_buttons .. "image_button[13.36,9.7;0.8,0.8;chess_draw_50move.png;draw_50_moves;]"..
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"tooltip[draw_50_moves;"..
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FS("Invoke the 50-move rule and draw the game.").."\n"..
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FS("(In the last 50 moves of each player, no pawn moved and no piece was captured.)").."]"
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FS("Invoke the 50-move rule and draw the game").."]"
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end
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-- Threefold repetition rule
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@ -1797,37 +1822,16 @@ local function update_formspec(meta)
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-- Will insta-draw.
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game_buttons = game_buttons .. "image_button[12.36,9.7;0.8,0.8;chess_draw_repeat3.png;draw_repeat_3;]"..
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"tooltip[draw_repeat_3;"..
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FS("Invoke the threefold repetition rule and draw the game.").."\n"..
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FS("(The same position has occured at least 3 times.)").."]"
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FS("Invoke the threefold repetition rule and draw the game").."]"
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elseif maxRepeatedPositions >= 2 then
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-- If the same position may be about to occur 3 times.
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-- Will trigger "draw claim" mode in which player must do the final move that triggers the draw.
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game_buttons = game_buttons .. "image_button[12.36,9.7;0.8,0.8;chess_draw_repeat3_next.png;draw_repeat_3;]"..
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"tooltip[draw_repeat_3;"..
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FS("Invoke the threefold repetition rule for your next move.").."\n"..
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FS("If invoked and the next move repeats a position for a 3rd time, the game will be drawn.").."]"
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FS("Invoke the threefold repetition rule for your next move").."]"
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end
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end
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local s_draw_claim = ""
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-- Change interface when in "draw claim" mode to make the move
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-- that triggers the draw condition
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if drawClaim == "50_move_rule" then
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eaten_img = ""
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s_draw_claim = "" ..
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"image[13.36,9.7;0.8,0.8;chess_draw_50move_next.png]" ..
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"tooltip[13.36,9.7;0.8,0.8;"..
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FS("Draw claim active: 50-move rule").."\n"..
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FS("If no pawn moves and no capture occurs in the next move, the game is drawn.").."]"
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elseif drawClaim == "same_position_3" then
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eaten_img = ""
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s_draw_claim = "" ..
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"image[12.36,9.7;0.8,0.8;chess_draw_repeat3_next.png]" ..
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"tooltip[12.36,9.7;0.8,0.8;"..
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FS("Draw claim active: Threefold repetition").."\n"..
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FS("If the next move repeats the same position for a 3rd time, the game is drawn.").."]"
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end
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local debug_formstring = ""
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if CHESS_DEBUG then
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-- Write a debug string in the formspec based on FEN
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@ -1868,8 +1872,8 @@ local function update_formspec(meta)
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"label[2.2,10.21;" .. turnWhite .. minetest.formspec_escape(status_white) .. "]" ..
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whiteArr ..
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"table[9.9,1.25;5.45,4;moves;" .. moves .. ";"..mlistlen.."]" ..
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s_draw_claim ..
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promotion_formstring ..
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draw_claim_formstring ..
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eaten_img ..
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game_buttons ..
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debug_formstring
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@ -1987,19 +1991,20 @@ local function update_game_result(meta)
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minetest.log("action", "[xdecor] Chess: A game between "..playerWhite.." and "..playerBlack.." ended in a draw by dead position")
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end
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local drawClaim = meta:get_string("drawClaim")
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-- 75-move rule. Automatically draw game if the last 75 moves of EACH player (thus 150 halfmoves)
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-- neither moved a pawn or captured a piece.
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-- Important: This rule MUST be checked AFTER checkmate because checkmate takes precedence.
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if meta:get_int("halfmoveClock") >= 150 then
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if meta:get_int("halfmoveClock") >= DRAWCLAIM_LONGGAME_FORCE then
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meta:set_string("gameResult", "draw")
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meta:set_string("gameResultReason", "75_move_rule")
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add_special_to_moves_list(meta, "draw")
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local msg = S("No piece was captured and no pawn was moved for 75 consecutive moves of each player. It's a draw!")
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send_message_2(playerWhite, playerBlack, msg, botColor)
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minetest.log("action", "[xdecor] Chess: A game between "..playerWhite.." and "..playerBlack.." ended in a draw via the 75-move rule")
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-- 50-move rule, after a player issued a draw claim when the halfmove clock was at 99.
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-- 50-move rule, after a player issued a draw claim for their next move.
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-- If no pawn moved nor a piece was captured for >= 100 halfmoves, the game is drawn.
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elseif meta:get_int("halfmoveClock") >= 100 and meta:get_string("drawClaim") == "50_move_rule" then
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elseif meta:get_int("halfmoveClock") >= DRAWCLAIM_LONGGAME_PLAYER and drawClaim == "50_move_rule" then
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meta:set_string("drawClaim", "")
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meta:set_string("gameResult", "draw")
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meta:set_string("gameResultReason", "50_move_rule")
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@ -2018,7 +2023,7 @@ local function update_game_result(meta)
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send_message(other, S("@1 has drawn the game by invoking the 50-move rule.", claimer), botColor)
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end
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minetest.log("action", "[xdecor] Chess: A game between "..playerWhite.." and "..playerBlack.." ended in a draw because "..claimer.." has invoked the 50-move rule")
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elseif meta:get_string("drawClaim") == "50_move_rule" then
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elseif drawClaim == "50_move_rule" then
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local claimer, other
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if lastMove == "black" or lastMove == "" then
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claimer = playerWhite
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@ -2102,7 +2107,7 @@ local function update_game_result(meta)
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minetest.log("action", "[xdecor] Chess: A game between "..playerWhite.." and "..playerBlack.." ended in a draw because the same position has appeared 5 times")
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-- threefold repetition
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elseif chosenRepetitionDraw and meta:get_string("drawClaim") == "same_position_3" then
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elseif chosenRepetitionDraw and drawClaim == "same_position_3" then
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meta:set_string("drawClaim", "")
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meta:set_string("gameResult", "draw")
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meta:set_string("gameResultReason", "same_position_3")
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@ -2121,7 +2126,7 @@ local function update_game_result(meta)
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send_message(other, S("@1 has drawn the game by invoking the threefold repetition rule.", claimer), botColor)
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end
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minetest.log("action", "[xdecor] Chess: A game between "..playerWhite.." and "..playerBlack.." ended in a draw because "..claimer.." has invoked the threefold repetition rule")
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elseif meta:get_string("drawClaim") == "same_position_3" then
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elseif drawClaim == "same_position_3" then
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local claimer, other
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if lastMove == "black" or lastMove == "" then
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claimer = playerWhite
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@ -2917,7 +2922,7 @@ function realchess.fields(pos, _, fields, sender)
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end
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local halfmoveClock = meta:get_int("halfmoveClock")
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if halfmoveClock >= 100 then
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if halfmoveClock >= DRAWCLAIM_LONGGAME_PLAYER then
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meta:set_string("gameResult", "draw")
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meta:set_string("gameResultReason", "50_move_rule")
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add_special_to_moves_list(meta, "draw")
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