893 lines
24 KiB
Lua
893 lines
24 KiB
Lua
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local realchess = {}
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screwdriver = screwdriver or {}
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local function index_to_xy(idx)
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idx = idx - 1
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local x = idx % 8
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local y = (idx - x) / 8
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return x, y
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end
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local function xy_to_index(x, y)
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return x + y * 8 + 1
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end
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local function get_square(a, b)
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return (a * 8) - (8 - b)
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end
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local chat_prefix = minetest.colorize("#FFFF00", "[Chess] ")
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local letters = {'A','B','C','D','E','F','G','H'}
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local rowDirs = {-1, -1, -1, 0, 0, 1, 1, 1}
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local colDirs = {-1, 0, 1, -1, 1, -1, 0, 1}
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local bishopThreats = {true, false, true, false, false, true, false, true}
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local rookThreats = {false, true, false, true, true, false, true, false}
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local queenThreats = {true, true, true, true, true, true, true, true}
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local kingThreats = {true, true, true, true, true, true, true, true}
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local function board_to_table(inv)
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local t = {}
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for i = 1, 64 do
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t[#t + 1] = inv:get_stack("board", i):get_name()
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end
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return t
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end
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local function attacked(color, idx, board)
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local threatDetected = false
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local kill = color == "white"
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local pawnThreats = {kill, false, kill, false, false, not kill, false, not kill}
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for dir = 1, 8 do
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if not threatDetected then
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local col, row = index_to_xy(idx)
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col, row = col + 1, row + 1
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for step = 1, 8 do
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row = row + rowDirs[dir]
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col = col + colDirs[dir]
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if row >= 1 and row <= 8 and col >= 1 and col <= 8 then
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local square = get_square(row, col)
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local square_name = board[square]
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local piece, pieceColor = square_name:match(":(%w+)_(%w+)")
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if piece then
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if pieceColor ~= color then
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if piece == "bishop" and bishopThreats[dir] then
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threatDetected = true
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elseif piece == "rook" and rookThreats[dir] then
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threatDetected = true
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elseif piece == "queen" and queenThreats[dir] then
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threatDetected = true
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else
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if step == 1 then
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if piece == "pawn" and pawnThreats[dir] then
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threatDetected = true
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end
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if piece == "king" and kingThreats[dir] then
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threatDetected = true
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end
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end
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end
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end
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break
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end
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end
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end
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end
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end
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return threatDetected
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end
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local function locate_kings(board)
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local Bidx, Widx
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for i = 1, 64 do
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local piece, color = board[i]:match(":(%w+)_(%w+)")
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if piece == "king" then
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if color == "black" then
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Bidx = i
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else
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Widx = i
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end
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end
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end
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return Bidx, Widx
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end
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local pieces = {
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"realchess:rook_black_1",
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"realchess:knight_black_1",
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"realchess:bishop_black_1",
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"realchess:queen_black",
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"realchess:king_black",
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"realchess:bishop_black_2",
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"realchess:knight_black_2",
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"realchess:rook_black_2",
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"realchess:pawn_black_1",
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"realchess:pawn_black_2",
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"realchess:pawn_black_3",
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"realchess:pawn_black_4",
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"realchess:pawn_black_5",
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"realchess:pawn_black_6",
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"realchess:pawn_black_7",
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"realchess:pawn_black_8",
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'','','','','','','','','','','','','','','','',
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'','','','','','','','','','','','','','','','',
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"realchess:pawn_white_1",
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"realchess:pawn_white_2",
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"realchess:pawn_white_3",
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"realchess:pawn_white_4",
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"realchess:pawn_white_5",
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"realchess:pawn_white_6",
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"realchess:pawn_white_7",
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"realchess:pawn_white_8",
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"realchess:rook_white_1",
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"realchess:knight_white_1",
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"realchess:bishop_white_1",
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"realchess:queen_white",
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"realchess:king_white",
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"realchess:bishop_white_2",
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"realchess:knight_white_2",
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"realchess:rook_white_2"
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}
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local pieces_str, x = "", 0
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for i = 1, #pieces do
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local p = pieces[i]:match(":(%w+_%w+)")
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if pieces[i]:find(":(%w+)_(%w+)") and not pieces_str:find(p) then
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pieces_str = pieces_str .. x .. "=" .. p .. ".png,"
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x = x + 1
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end
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end
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pieces_str = pieces_str .. "69=mailbox_blank16.png"
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local fs = [[
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size[14.7,10;]
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no_prepend[]
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bgcolor[#080808BB;true]
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background[0,0;14.7,10;chess_bg.png]
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list[context;board;0.3,1;8,8;]
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listcolors[#00000000;#00000000;#00000000;#30434C;#FFF]
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tableoptions[background=#00000000;highlight=#00000000;border=false]
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button[10.5,8.5;2,2;new;New game]
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]] .. "tablecolumns[image," .. pieces_str ..
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";text;color;text;color;text;image," .. pieces_str .. "]"
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local function get_moves_list(meta, pieceFrom, pieceTo, pieceTo_s, from_x, to_x, from_y, to_y)
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local moves = meta:get_string("moves")
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local pieceFrom_s = pieceFrom:match(":(%w+_%w+)")
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local pieceFrom_si_id = pieces_str:match("(%d+)=" .. pieceFrom_s)
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local pieceTo_si_id = pieceTo_s ~= "" and pieces_str:match("(%d+)=" .. pieceTo_s) or ""
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local coordFrom = letters[from_x + 1] .. math.abs(from_y - 8)
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local coordTo = letters[to_x + 1] .. math.abs(to_y - 8)
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local new_moves = pieceFrom_si_id .. "," ..
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coordFrom .. "," ..
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(pieceTo ~= "" and "#33FF33" or "#FFFFFF") .. ", > ,#FFFFFF," ..
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coordTo .. "," ..
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(pieceTo ~= "" and pieceTo_si_id or "69") .. "," ..
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moves
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meta:set_string("moves", new_moves)
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end
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local function get_eaten_list(meta, pieceTo, pieceTo_s)
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local eaten = meta:get_string("eaten")
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if pieceTo ~= "" then
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eaten = eaten .. pieceTo_s .. ","
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end
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meta:set_string("eaten", eaten)
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local eaten_t = string.split(eaten, ",")
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local eaten_img = ""
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local a, b = 0, 0
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for i = 1, #eaten_t do
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local is_white = eaten_t[i]:sub(-5,-1) == "white"
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local X = (is_white and a or b) % 4
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local Y = ((is_white and a or b) % 16 - X) / 4
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if is_white then
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a = a + 1
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else
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b = b + 1
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end
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eaten_img = eaten_img ..
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"image[" .. ((X + (is_white and 11.7 or 8.8)) - (X * 0.45)) .. "," ..
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((Y + 5.56) - (Y * 0.2)) .. ";1,1;" .. eaten_t[i] .. ".png]"
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end
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meta:set_string("eaten_img", eaten_img)
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end
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function realchess.init(pos)
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local meta = minetest.get_meta(pos)
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local inv = meta:get_inventory()
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meta:set_string("formspec", fs)
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meta:set_string("infotext", "Chess Board")
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meta:set_string("playerBlack", "")
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meta:set_string("playerWhite", "")
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meta:set_string("lastMove", "")
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meta:set_string("blackAttacked", "")
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meta:set_string("whiteAttacked", "")
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meta:set_int("lastMoveTime", 0)
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meta:set_int("castlingBlackL", 1)
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meta:set_int("castlingBlackR", 1)
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meta:set_int("castlingWhiteL", 1)
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meta:set_int("castlingWhiteR", 1)
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meta:set_string("moves", "")
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meta:set_string("eaten", "")
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inv:set_list("board", pieces)
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inv:set_size("board", 64)
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end
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function realchess.move(pos, from_list, from_index, to_list, to_index, _, player)
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if from_list ~= "board" and to_list ~= "board" then
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return 0
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end
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local meta = minetest.get_meta(pos)
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local playerName = player:get_player_name()
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local inv = meta:get_inventory()
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local pieceFrom = inv:get_stack(from_list, from_index):get_name()
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local pieceTo = inv:get_stack(to_list, to_index):get_name()
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local lastMove = meta:get_string("lastMove")
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local playerWhite = meta:get_string("playerWhite")
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local playerBlack = meta:get_string("playerBlack")
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local thisMove -- Will replace lastMove when move is legal
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if pieceFrom:find("white") then
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if playerWhite ~= "" and playerWhite ~= playerName then
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minetest.chat_send_player(playerName, chat_prefix .. "Someone else plays white pieces!")
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return 0
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end
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if lastMove ~= "" and lastMove ~= "black" then
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return 0
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end
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if pieceTo:find("white") then
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-- Don't replace pieces of same color
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return 0
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end
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playerWhite = playerName
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thisMove = "white"
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elseif pieceFrom:find("black") then
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if playerBlack ~= "" and playerBlack ~= playerName then
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minetest.chat_send_player(playerName, chat_prefix .. "Someone else plays black pieces!")
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return 0
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end
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if lastMove ~= "" and lastMove ~= "white" then
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return 0
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end
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if pieceTo:find("black") then
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-- Don't replace pieces of same color
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return 0
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end
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playerBlack = playerName
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thisMove = "black"
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end
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-- MOVE LOGIC
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local from_x, from_y = index_to_xy(from_index)
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local to_x, to_y = index_to_xy(to_index)
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-- PAWN
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if pieceFrom:sub(11,14) == "pawn" then
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if thisMove == "white" then
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local pawnWhiteMove = inv:get_stack(from_list, xy_to_index(from_x, from_y - 1)):get_name()
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-- white pawns can go up only
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if from_y - 1 == to_y then
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if from_x == to_x then
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if pieceTo ~= "" then
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return 0
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elseif to_index >= 1 and to_index <= 8 then
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inv:set_stack(from_list, from_index, "realchess:queen_white")
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end
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elseif from_x - 1 == to_x or from_x + 1 == to_x then
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if not pieceTo:find("black") then
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return 0
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elseif to_index >= 1 and to_index <= 8 then
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inv:set_stack(from_list, from_index, "realchess:queen_white")
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end
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else
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return 0
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end
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elseif from_y - 2 == to_y then
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if pieceTo ~= "" or from_y < 6 or pawnWhiteMove ~= "" then
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return 0
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end
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else
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return 0
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end
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--[[
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if x not changed
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ensure that destination cell is empty
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elseif x changed one unit left or right
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ensure the pawn is killing opponent piece
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else
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move is not legal - abort
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]]
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if from_x == to_x then
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if pieceTo ~= "" then
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return 0
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end
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elseif from_x - 1 == to_x or from_x + 1 == to_x then
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if not pieceTo:find("black") then
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return 0
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end
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else
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return 0
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end
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elseif thisMove == "black" then
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local pawnBlackMove = inv:get_stack(from_list, xy_to_index(from_x, from_y + 1)):get_name()
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-- black pawns can go down only
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if from_y + 1 == to_y then
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if from_x == to_x then
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if pieceTo ~= "" then
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return 0
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elseif to_index >= 57 and to_index <= 64 then
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inv:set_stack(from_list, from_index, "realchess:queen_black")
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end
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elseif from_x - 1 == to_x or from_x + 1 == to_x then
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if not pieceTo:find("white") then
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return 0
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elseif to_index >= 57 and to_index <= 64 then
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inv:set_stack(from_list, from_index, "realchess:queen_black")
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end
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else
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return 0
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end
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elseif from_y + 2 == to_y then
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if pieceTo ~= "" or from_y > 1 or pawnBlackMove ~= "" then
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return 0
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end
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else
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return 0
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||
|
|
end
|
||
|
|
|
||
|
|
--[[
|
||
|
|
if x not changed
|
||
|
|
ensure that destination cell is empty
|
||
|
|
elseif x changed one unit left or right
|
||
|
|
ensure the pawn is killing opponent piece
|
||
|
|
else
|
||
|
|
move is not legal - abort
|
||
|
|
]]
|
||
|
|
|
||
|
|
if from_x == to_x then
|
||
|
|
if pieceTo ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
elseif from_x - 1 == to_x or from_x + 1 == to_x then
|
||
|
|
if not pieceTo:find("white") then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
else
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
else
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
|
||
|
|
-- ROOK
|
||
|
|
elseif pieceFrom:sub(11,14) == "rook" then
|
||
|
|
if from_x == to_x then
|
||
|
|
-- Moving vertically
|
||
|
|
if from_y < to_y then
|
||
|
|
-- Moving down
|
||
|
|
-- Ensure that no piece disturbs the way
|
||
|
|
for i = from_y + 1, to_y - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x, i)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
else
|
||
|
|
-- Mocing up
|
||
|
|
-- Ensure that no piece disturbs the way
|
||
|
|
for i = to_y + 1, from_y - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x, i)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
elseif from_y == to_y then
|
||
|
|
-- Mocing horizontally
|
||
|
|
if from_x < to_x then
|
||
|
|
-- mocing right
|
||
|
|
-- ensure that no piece disturbs the way
|
||
|
|
for i = from_x + 1, to_x - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(i, from_y)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
else
|
||
|
|
-- Mocing left
|
||
|
|
-- Ensure that no piece disturbs the way
|
||
|
|
for i = to_x + 1, from_x - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(i, from_y)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
else
|
||
|
|
-- Attempt to move arbitrarily -> abort
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
|
||
|
|
if thisMove == "white" or thisMove == "black" then
|
||
|
|
if pieceFrom:sub(-1) == "1" then
|
||
|
|
meta:set_int("castlingWhiteL", 0)
|
||
|
|
elseif pieceFrom:sub(-1) == "2" then
|
||
|
|
meta:set_int("castlingWhiteR", 0)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
-- KNIGHT
|
||
|
|
elseif pieceFrom:sub(11,16) == "knight" then
|
||
|
|
-- Get relative pos
|
||
|
|
local dx = from_x - to_x
|
||
|
|
local dy = from_y - to_y
|
||
|
|
|
||
|
|
-- Get absolute values
|
||
|
|
if dx < 0 then dx = -dx end
|
||
|
|
if dy < 0 then dy = -dy end
|
||
|
|
|
||
|
|
-- Sort x and y
|
||
|
|
if dx > dy then dx, dy = dy, dx end
|
||
|
|
|
||
|
|
-- Ensure that dx == 1 and dy == 2
|
||
|
|
if dx ~= 1 or dy ~= 2 then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
-- Just ensure that destination cell does not contain friend piece
|
||
|
|
-- ^ It was done already thus everything ok
|
||
|
|
|
||
|
|
-- BISHOP
|
||
|
|
elseif pieceFrom:sub(11,16) == "bishop" then
|
||
|
|
-- Get relative pos
|
||
|
|
local dx = from_x - to_x
|
||
|
|
local dy = from_y - to_y
|
||
|
|
|
||
|
|
-- Get absolute values
|
||
|
|
if dx < 0 then dx = -dx end
|
||
|
|
if dy < 0 then dy = -dy end
|
||
|
|
|
||
|
|
-- Ensure dx and dy are equal
|
||
|
|
if dx ~= dy then return 0 end
|
||
|
|
|
||
|
|
if from_x < to_x then
|
||
|
|
if from_y < to_y then
|
||
|
|
-- Moving right-down
|
||
|
|
-- Ensure that no piece disturbs the way
|
||
|
|
for i = 1, dx - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x + i, from_y + i)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
else
|
||
|
|
-- Moving right-up
|
||
|
|
-- Ensure that no piece disturbs the way
|
||
|
|
for i = 1, dx - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x + i, from_y - i)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
else
|
||
|
|
if from_y < to_y then
|
||
|
|
-- Moving left-down
|
||
|
|
-- Ensure that no piece disturbs the way
|
||
|
|
for i = 1, dx - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x - i, from_y + i)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
else
|
||
|
|
-- Moving left-up
|
||
|
|
-- ensure that no piece disturbs the way
|
||
|
|
for i = 1, dx - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x - i, from_y - i)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
-- QUEEN
|
||
|
|
elseif pieceFrom:sub(11,15) == "queen" then
|
||
|
|
local dx = from_x - to_x
|
||
|
|
local dy = from_y - to_y
|
||
|
|
|
||
|
|
-- Get absolute values
|
||
|
|
if dx < 0 then dx = -dx end
|
||
|
|
if dy < 0 then dy = -dy end
|
||
|
|
|
||
|
|
-- Ensure valid relative move
|
||
|
|
if dx ~= 0 and dy ~= 0 and dx ~= dy then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
|
||
|
|
if from_x == to_x then
|
||
|
|
if from_y < to_y then
|
||
|
|
-- Goes down
|
||
|
|
-- Ensure that no piece disturbs the way
|
||
|
|
for i = 1, dx - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x, from_y + i)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
else
|
||
|
|
-- Goes up
|
||
|
|
-- Ensure that no piece disturbs the way
|
||
|
|
for i = 1, dx - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x, from_y - i)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
elseif from_x < to_x then
|
||
|
|
if from_y == to_y then
|
||
|
|
-- Goes right
|
||
|
|
-- Ensure that no piece disturbs the way
|
||
|
|
for i = 1, dx - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x + i, from_y)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
elseif from_y < to_y then
|
||
|
|
-- Goes right-down
|
||
|
|
-- Ensure that no piece disturbs the way
|
||
|
|
for i = 1, dx - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x + i, from_y + i)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
else
|
||
|
|
-- Goes right-up
|
||
|
|
-- Ensure that no piece disturbs the way
|
||
|
|
for i = 1, dx - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x + i, from_y - i)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
else
|
||
|
|
if from_y == to_y then
|
||
|
|
-- Goes left
|
||
|
|
-- Ensure that no piece disturbs the way and destination cell does
|
||
|
|
for i = 1, dx - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x - i, from_y)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
elseif from_y < to_y then
|
||
|
|
-- Goes left-down
|
||
|
|
-- Ensure that no piece disturbs the way
|
||
|
|
for i = 1, dx - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x - i, from_y + i)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
else
|
||
|
|
-- Goes left-up
|
||
|
|
-- Ensure that no piece disturbs the way
|
||
|
|
for i = 1, dx - 1 do
|
||
|
|
if inv:get_stack(from_list, xy_to_index(from_x - i, from_y - i)):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
-- KING
|
||
|
|
elseif pieceFrom:sub(11,14) == "king" then
|
||
|
|
local dx = from_x - to_x
|
||
|
|
local dy = from_y - to_y
|
||
|
|
local check = true
|
||
|
|
|
||
|
|
if thisMove == "white" then
|
||
|
|
if from_y == 7 and to_y == 7 then
|
||
|
|
if to_x == 1 then
|
||
|
|
local castlingWhiteL = meta:get_int("castlingWhiteL")
|
||
|
|
local idx57 = inv:get_stack(from_list, 57):get_name()
|
||
|
|
|
||
|
|
if castlingWhiteL == 1 and idx57 == "realchess:rook_white_1" then
|
||
|
|
for i = 58, from_index - 1 do
|
||
|
|
if inv:get_stack(from_list, i):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
inv:set_stack(from_list, 57, "")
|
||
|
|
inv:set_stack(from_list, 59, "realchess:rook_white_1")
|
||
|
|
check = false
|
||
|
|
end
|
||
|
|
elseif to_x == 6 then
|
||
|
|
local castlingWhiteR = meta:get_int("castlingWhiteR")
|
||
|
|
local idx64 = inv:get_stack(from_list, 64):get_name()
|
||
|
|
|
||
|
|
if castlingWhiteR == 1 and idx64 == "realchess:rook_white_2" then
|
||
|
|
for i = from_index + 1, 63 do
|
||
|
|
if inv:get_stack(from_list, i):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
inv:set_stack(from_list, 62, "realchess:rook_white_2")
|
||
|
|
inv:set_stack(from_list, 64, "")
|
||
|
|
check = false
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
elseif thisMove == "black" then
|
||
|
|
if from_y == 0 and to_y == 0 then
|
||
|
|
if to_x == 1 then
|
||
|
|
local castlingBlackL = meta:get_int("castlingBlackL")
|
||
|
|
local idx1 = inv:get_stack(from_list, 1):get_name()
|
||
|
|
|
||
|
|
if castlingBlackL == 1 and idx1 == "realchess:rook_black_1" then
|
||
|
|
for i = 2, from_index - 1 do
|
||
|
|
if inv:get_stack(from_list, i):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
inv:set_stack(from_list, 1, "")
|
||
|
|
inv:set_stack(from_list, 3, "realchess:rook_black_1")
|
||
|
|
check = false
|
||
|
|
end
|
||
|
|
elseif to_x == 6 then
|
||
|
|
local castlingBlackR = meta:get_int("castlingBlackR")
|
||
|
|
local idx8 = inv:get_stack(from_list, 1):get_name()
|
||
|
|
|
||
|
|
if castlingBlackR == 1 and idx8 == "realchess:rook_black_2" then
|
||
|
|
for i = from_index + 1, 7 do
|
||
|
|
if inv:get_stack(from_list, i):get_name() ~= "" then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
inv:set_stack(from_list, 6, "realchess:rook_black_2")
|
||
|
|
inv:set_stack(from_list, 8, "")
|
||
|
|
check = false
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
if check then
|
||
|
|
if dx < 0 then
|
||
|
|
dx = -dx
|
||
|
|
end
|
||
|
|
|
||
|
|
if dy < 0 then
|
||
|
|
dy = -dy
|
||
|
|
end
|
||
|
|
|
||
|
|
if dx > 1 or dy > 1 then
|
||
|
|
return 0
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
if thisMove == "white" then
|
||
|
|
meta:set_int("castlingWhiteL", 0)
|
||
|
|
meta:set_int("castlingWhiteR", 0)
|
||
|
|
|
||
|
|
elseif thisMove == "black" then
|
||
|
|
meta:set_int("castlingBlackL", 0)
|
||
|
|
meta:set_int("castlingBlackR", 0)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
local board = board_to_table(inv)
|
||
|
|
board[to_index] = board[from_index]
|
||
|
|
board[from_index] = ""
|
||
|
|
|
||
|
|
local black_king_idx, white_king_idx = locate_kings(board)
|
||
|
|
local blackAttacked = attacked("black", black_king_idx, board)
|
||
|
|
local whiteAttacked = attacked("white", white_king_idx, board)
|
||
|
|
|
||
|
|
if blackAttacked then
|
||
|
|
if thisMove == "black" and meta:get_string("blackAttacked") == "true" then
|
||
|
|
return 0
|
||
|
|
else
|
||
|
|
meta:set_string("blackAttacked", "true")
|
||
|
|
end
|
||
|
|
else
|
||
|
|
meta:set_string("blackAttacked", "")
|
||
|
|
end
|
||
|
|
|
||
|
|
if whiteAttacked then
|
||
|
|
if thisMove == "white" and meta:get_string("whiteAttacked") == "true" then
|
||
|
|
return 0
|
||
|
|
else
|
||
|
|
meta:set_string("whiteAttacked", "true")
|
||
|
|
end
|
||
|
|
else
|
||
|
|
meta:set_string("whiteAttacked", "")
|
||
|
|
end
|
||
|
|
|
||
|
|
lastMove = thisMove
|
||
|
|
|
||
|
|
meta:set_string("lastMove", lastMove)
|
||
|
|
meta:set_int("lastMoveTime", minetest.get_gametime())
|
||
|
|
meta:set_string("playerWhite", playerWhite)
|
||
|
|
meta:set_string("playerBlack", playerBlack)
|
||
|
|
|
||
|
|
local pieceTo_s = pieceTo ~= "" and pieceTo:match(":(%w+_%w+)") or ""
|
||
|
|
get_moves_list(meta, pieceFrom, pieceTo, pieceTo_s, from_x, to_x, from_y, to_y)
|
||
|
|
get_eaten_list(meta, pieceTo, pieceTo_s)
|
||
|
|
|
||
|
|
return 1
|
||
|
|
end
|
||
|
|
|
||
|
|
function realchess.on_move(pos, from_list, from_index)
|
||
|
|
local meta = minetest.get_meta(pos)
|
||
|
|
local inv = meta:get_inventory()
|
||
|
|
inv:set_stack(from_list, from_index, '')
|
||
|
|
|
||
|
|
local black_king_attacked = meta:get_string("blackAttacked") == "true"
|
||
|
|
local white_king_attacked = meta:get_string("whiteAttacked") == "true"
|
||
|
|
|
||
|
|
local playerWhite = meta:get_string("playerWhite")
|
||
|
|
local playerBlack = meta:get_string("playerBlack")
|
||
|
|
|
||
|
|
local moves = meta:get_string("moves")
|
||
|
|
local eaten_img = meta:get_string("eaten_img")
|
||
|
|
local lastMove = meta:get_string("lastMove")
|
||
|
|
local turnBlack = minetest.colorize("#000001", (lastMove == "white" and playerBlack ~= "") and
|
||
|
|
playerBlack .. "..." or playerBlack)
|
||
|
|
local turnWhite = minetest.colorize("#000001", (lastMove == "black" and playerWhite ~= "") and
|
||
|
|
playerWhite .. "..." or playerWhite)
|
||
|
|
local check_s = minetest.colorize("#FF0000", "\\[check\\]")
|
||
|
|
|
||
|
|
local formspec = fs ..
|
||
|
|
"label[1.9,0.3;" .. turnBlack .. (black_king_attacked and " " .. check_s or "") .. "]" ..
|
||
|
|
"label[1.9,9.15;" .. turnWhite .. (white_king_attacked and " " .. check_s or "") .. "]" ..
|
||
|
|
"table[8.9,1.05;5.07,3.75;moves;" .. moves:sub(1,-2) .. ";1]" ..
|
||
|
|
eaten_img
|
||
|
|
|
||
|
|
meta:set_string("formspec", formspec)
|
||
|
|
|
||
|
|
return false
|
||
|
|
end
|
||
|
|
|
||
|
|
local function timeout_format(timeout_limit)
|
||
|
|
local time_remaining = timeout_limit - minetest.get_gametime()
|
||
|
|
local minutes = math.floor(time_remaining / 60)
|
||
|
|
local seconds = time_remaining % 60
|
||
|
|
|
||
|
|
if minutes == 0 then
|
||
|
|
return seconds .. " sec."
|
||
|
|
end
|
||
|
|
|
||
|
|
return minutes .. " min. " .. seconds .. " sec."
|
||
|
|
end
|
||
|
|
|
||
|
|
function realchess.fields(pos, _, fields, sender)
|
||
|
|
local playerName = sender:get_player_name()
|
||
|
|
local meta = minetest.get_meta(pos)
|
||
|
|
local timeout_limit = meta:get_int("lastMoveTime") + 300
|
||
|
|
local playerWhite = meta:get_string("playerWhite")
|
||
|
|
local playerBlack = meta:get_string("playerBlack")
|
||
|
|
local lastMoveTime = meta:get_int("lastMoveTime")
|
||
|
|
if fields.quit then return end
|
||
|
|
|
||
|
|
-- Timeout is 5 min. by default for resetting the game (non-players only)
|
||
|
|
if fields.new then
|
||
|
|
if (playerWhite == playerName or playerBlack == playerName) then
|
||
|
|
realchess.init(pos)
|
||
|
|
|
||
|
|
elseif lastMoveTime ~= 0 then
|
||
|
|
if minetest.get_gametime() >= timeout_limit and
|
||
|
|
(playerWhite ~= playerName or playerBlack ~= playerName) then
|
||
|
|
realchess.init(pos)
|
||
|
|
else
|
||
|
|
minetest.chat_send_player(playerName, chat_prefix ..
|
||
|
|
"You can't reset the chessboard, a game has been started. " ..
|
||
|
|
"If you aren't a current player, try again in " ..
|
||
|
|
timeout_format(timeout_limit))
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
function realchess.dig(pos, player)
|
||
|
|
if not player then
|
||
|
|
return false
|
||
|
|
end
|
||
|
|
|
||
|
|
local meta = minetest.get_meta(pos)
|
||
|
|
local playerName = player:get_player_name()
|
||
|
|
local timeout_limit = meta:get_int("lastMoveTime") + 300
|
||
|
|
local lastMoveTime = meta:get_int("lastMoveTime")
|
||
|
|
|
||
|
|
-- Timeout is 5 min. by default for digging the chessboard (non-players only)
|
||
|
|
return (lastMoveTime == 0 and minetest.get_gametime() > timeout_limit) or
|
||
|
|
minetest.chat_send_player(playerName, chat_prefix ..
|
||
|
|
"You can't dig the chessboard, a game has been started. " ..
|
||
|
|
"Reset it first if you're a current player, or dig it again in " ..
|
||
|
|
timeout_format(timeout_limit))
|
||
|
|
end
|
||
|
|
|
||
|
|
minetest.register_node(":realchess:chessboard", {
|
||
|
|
description = "Chess Board",
|
||
|
|
drawtype = "nodebox",
|
||
|
|
paramtype = "light",
|
||
|
|
paramtype2 = "facedir",
|
||
|
|
inventory_image = "chessboard_top.png",
|
||
|
|
wield_image = "chessboard_top.png",
|
||
|
|
tiles = {"chessboard_top.png", "chessboard_top.png", "chessboard_sides.png"},
|
||
|
|
groups = {choppy=3, oddly_breakable_by_hand=2, flammable=3},
|
||
|
|
sounds = default.node_sound_wood_defaults(),
|
||
|
|
node_box = {type = "fixed", fixed = {-.375, -.5, -.375, .375, -.4375, .375}},
|
||
|
|
sunlight_propagates = true,
|
||
|
|
on_rotate = screwdriver.rotate_simple,
|
||
|
|
can_dig = realchess.dig,
|
||
|
|
on_construct = realchess.init,
|
||
|
|
on_receive_fields = realchess.fields,
|
||
|
|
allow_metadata_inventory_move = realchess.move,
|
||
|
|
on_metadata_inventory_move = realchess.on_move,
|
||
|
|
allow_metadata_inventory_take = function() return 0 end
|
||
|
|
})
|
||
|
|
|
||
|
|
local function register_piece(name, count)
|
||
|
|
for _, color in pairs({"black", "white"}) do
|
||
|
|
if not count then
|
||
|
|
minetest.register_craftitem(":realchess:" .. name .. "_" .. color, {
|
||
|
|
description = color:gsub("^%l", string.upper) .. " " .. name:gsub("^%l", string.upper),
|
||
|
|
inventory_image = name .. "_" .. color .. ".png",
|
||
|
|
stack_max = 1,
|
||
|
|
groups = {not_in_creative_inventory=1}
|
||
|
|
})
|
||
|
|
else
|
||
|
|
for i = 1, count do
|
||
|
|
minetest.register_craftitem(":realchess:" .. name .. "_" .. color .. "_" .. i, {
|
||
|
|
description = color:gsub("^%l", string.upper) .. " " .. name:gsub("^%l", string.upper),
|
||
|
|
inventory_image = name .. "_" .. color .. ".png",
|
||
|
|
stack_max = 1,
|
||
|
|
groups = {not_in_creative_inventory=1}
|
||
|
|
})
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
register_piece("pawn", 8)
|
||
|
|
register_piece("rook", 2)
|
||
|
|
register_piece("knight", 2)
|
||
|
|
register_piece("bishop", 2)
|
||
|
|
register_piece("queen")
|
||
|
|
register_piece("king")
|
||
|
|
|
||
|
|
-- Recipes
|
||
|
|
|
||
|
|
minetest.register_craft({
|
||
|
|
output = "realchess:chessboard",
|
||
|
|
recipe = {
|
||
|
|
{"dye:black", "dye:white", "dye:black"},
|
||
|
|
{"stairs:slab_wood", "stairs:slab_wood", "stairs:slab_wood"}
|
||
|
|
}
|
||
|
|
})
|