minetest-mods/realchess/init.lua

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2019-12-14 17:47:31 +01:00
local realchess = {}
screwdriver = screwdriver or {}
local function index_to_xy(idx)
idx = idx - 1
local x = idx % 8
local y = (idx - x) / 8
return x, y
end
local function xy_to_index(x, y)
return x + y * 8 + 1
end
local function get_square(a, b)
return (a * 8) - (8 - b)
end
local chat_prefix = minetest.colorize("#FFFF00", "[Chess] ")
local letters = {'A','B','C','D','E','F','G','H'}
local rowDirs = {-1, -1, -1, 0, 0, 1, 1, 1}
local colDirs = {-1, 0, 1, -1, 1, -1, 0, 1}
local bishopThreats = {true, false, true, false, false, true, false, true}
local rookThreats = {false, true, false, true, true, false, true, false}
local queenThreats = {true, true, true, true, true, true, true, true}
local kingThreats = {true, true, true, true, true, true, true, true}
local function board_to_table(inv)
local t = {}
for i = 1, 64 do
t[#t + 1] = inv:get_stack("board", i):get_name()
end
return t
end
local function attacked(color, idx, board)
local threatDetected = false
local kill = color == "white"
local pawnThreats = {kill, false, kill, false, false, not kill, false, not kill}
for dir = 1, 8 do
if not threatDetected then
local col, row = index_to_xy(idx)
col, row = col + 1, row + 1
for step = 1, 8 do
row = row + rowDirs[dir]
col = col + colDirs[dir]
if row >= 1 and row <= 8 and col >= 1 and col <= 8 then
local square = get_square(row, col)
local square_name = board[square]
local piece, pieceColor = square_name:match(":(%w+)_(%w+)")
if piece then
if pieceColor ~= color then
if piece == "bishop" and bishopThreats[dir] then
threatDetected = true
elseif piece == "rook" and rookThreats[dir] then
threatDetected = true
elseif piece == "queen" and queenThreats[dir] then
threatDetected = true
else
if step == 1 then
if piece == "pawn" and pawnThreats[dir] then
threatDetected = true
end
if piece == "king" and kingThreats[dir] then
threatDetected = true
end
end
end
end
break
end
end
end
end
end
return threatDetected
end
local function locate_kings(board)
local Bidx, Widx
for i = 1, 64 do
local piece, color = board[i]:match(":(%w+)_(%w+)")
if piece == "king" then
if color == "black" then
Bidx = i
else
Widx = i
end
end
end
return Bidx, Widx
end
local pieces = {
"realchess:rook_black_1",
"realchess:knight_black_1",
"realchess:bishop_black_1",
"realchess:queen_black",
"realchess:king_black",
"realchess:bishop_black_2",
"realchess:knight_black_2",
"realchess:rook_black_2",
"realchess:pawn_black_1",
"realchess:pawn_black_2",
"realchess:pawn_black_3",
"realchess:pawn_black_4",
"realchess:pawn_black_5",
"realchess:pawn_black_6",
"realchess:pawn_black_7",
"realchess:pawn_black_8",
'','','','','','','','','','','','','','','','',
'','','','','','','','','','','','','','','','',
"realchess:pawn_white_1",
"realchess:pawn_white_2",
"realchess:pawn_white_3",
"realchess:pawn_white_4",
"realchess:pawn_white_5",
"realchess:pawn_white_6",
"realchess:pawn_white_7",
"realchess:pawn_white_8",
"realchess:rook_white_1",
"realchess:knight_white_1",
"realchess:bishop_white_1",
"realchess:queen_white",
"realchess:king_white",
"realchess:bishop_white_2",
"realchess:knight_white_2",
"realchess:rook_white_2"
}
local pieces_str, x = "", 0
for i = 1, #pieces do
local p = pieces[i]:match(":(%w+_%w+)")
if pieces[i]:find(":(%w+)_(%w+)") and not pieces_str:find(p) then
pieces_str = pieces_str .. x .. "=" .. p .. ".png,"
x = x + 1
end
end
pieces_str = pieces_str .. "69=mailbox_blank16.png"
local fs = [[
size[14.7,10;]
no_prepend[]
bgcolor[#080808BB;true]
background[0,0;14.7,10;chess_bg.png]
list[context;board;0.3,1;8,8;]
listcolors[#00000000;#00000000;#00000000;#30434C;#FFF]
tableoptions[background=#00000000;highlight=#00000000;border=false]
button[10.5,8.5;2,2;new;New game]
]] .. "tablecolumns[image," .. pieces_str ..
";text;color;text;color;text;image," .. pieces_str .. "]"
local function get_moves_list(meta, pieceFrom, pieceTo, pieceTo_s, from_x, to_x, from_y, to_y)
local moves = meta:get_string("moves")
local pieceFrom_s = pieceFrom:match(":(%w+_%w+)")
local pieceFrom_si_id = pieces_str:match("(%d+)=" .. pieceFrom_s)
local pieceTo_si_id = pieceTo_s ~= "" and pieces_str:match("(%d+)=" .. pieceTo_s) or ""
local coordFrom = letters[from_x + 1] .. math.abs(from_y - 8)
local coordTo = letters[to_x + 1] .. math.abs(to_y - 8)
local new_moves = pieceFrom_si_id .. "," ..
coordFrom .. "," ..
(pieceTo ~= "" and "#33FF33" or "#FFFFFF") .. ", > ,#FFFFFF," ..
coordTo .. "," ..
(pieceTo ~= "" and pieceTo_si_id or "69") .. "," ..
moves
meta:set_string("moves", new_moves)
end
local function get_eaten_list(meta, pieceTo, pieceTo_s)
local eaten = meta:get_string("eaten")
if pieceTo ~= "" then
eaten = eaten .. pieceTo_s .. ","
end
meta:set_string("eaten", eaten)
local eaten_t = string.split(eaten, ",")
local eaten_img = ""
local a, b = 0, 0
for i = 1, #eaten_t do
local is_white = eaten_t[i]:sub(-5,-1) == "white"
local X = (is_white and a or b) % 4
local Y = ((is_white and a or b) % 16 - X) / 4
if is_white then
a = a + 1
else
b = b + 1
end
eaten_img = eaten_img ..
"image[" .. ((X + (is_white and 11.7 or 8.8)) - (X * 0.45)) .. "," ..
((Y + 5.56) - (Y * 0.2)) .. ";1,1;" .. eaten_t[i] .. ".png]"
end
meta:set_string("eaten_img", eaten_img)
end
function realchess.init(pos)
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
meta:set_string("formspec", fs)
meta:set_string("infotext", "Chess Board")
meta:set_string("playerBlack", "")
meta:set_string("playerWhite", "")
meta:set_string("lastMove", "")
meta:set_string("blackAttacked", "")
meta:set_string("whiteAttacked", "")
meta:set_int("lastMoveTime", 0)
meta:set_int("castlingBlackL", 1)
meta:set_int("castlingBlackR", 1)
meta:set_int("castlingWhiteL", 1)
meta:set_int("castlingWhiteR", 1)
meta:set_string("moves", "")
meta:set_string("eaten", "")
inv:set_list("board", pieces)
inv:set_size("board", 64)
end
function realchess.move(pos, from_list, from_index, to_list, to_index, _, player)
if from_list ~= "board" and to_list ~= "board" then
return 0
end
local meta = minetest.get_meta(pos)
local playerName = player:get_player_name()
local inv = meta:get_inventory()
local pieceFrom = inv:get_stack(from_list, from_index):get_name()
local pieceTo = inv:get_stack(to_list, to_index):get_name()
local lastMove = meta:get_string("lastMove")
local playerWhite = meta:get_string("playerWhite")
local playerBlack = meta:get_string("playerBlack")
local thisMove -- Will replace lastMove when move is legal
if pieceFrom:find("white") then
if playerWhite ~= "" and playerWhite ~= playerName then
minetest.chat_send_player(playerName, chat_prefix .. "Someone else plays white pieces!")
return 0
end
if lastMove ~= "" and lastMove ~= "black" then
return 0
end
if pieceTo:find("white") then
-- Don't replace pieces of same color
return 0
end
playerWhite = playerName
thisMove = "white"
elseif pieceFrom:find("black") then
if playerBlack ~= "" and playerBlack ~= playerName then
minetest.chat_send_player(playerName, chat_prefix .. "Someone else plays black pieces!")
return 0
end
if lastMove ~= "" and lastMove ~= "white" then
return 0
end
if pieceTo:find("black") then
-- Don't replace pieces of same color
return 0
end
playerBlack = playerName
thisMove = "black"
end
-- MOVE LOGIC
local from_x, from_y = index_to_xy(from_index)
local to_x, to_y = index_to_xy(to_index)
-- PAWN
if pieceFrom:sub(11,14) == "pawn" then
if thisMove == "white" then
local pawnWhiteMove = inv:get_stack(from_list, xy_to_index(from_x, from_y - 1)):get_name()
-- white pawns can go up only
if from_y - 1 == to_y then
if from_x == to_x then
if pieceTo ~= "" then
return 0
elseif to_index >= 1 and to_index <= 8 then
inv:set_stack(from_list, from_index, "realchess:queen_white")
end
elseif from_x - 1 == to_x or from_x + 1 == to_x then
if not pieceTo:find("black") then
return 0
elseif to_index >= 1 and to_index <= 8 then
inv:set_stack(from_list, from_index, "realchess:queen_white")
end
else
return 0
end
elseif from_y - 2 == to_y then
if pieceTo ~= "" or from_y < 6 or pawnWhiteMove ~= "" then
return 0
end
else
return 0
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("black") then
return 0
end
else
return 0
end
elseif thisMove == "black" then
local pawnBlackMove = inv:get_stack(from_list, xy_to_index(from_x, from_y + 1)):get_name()
-- black pawns can go down only
if from_y + 1 == to_y then
if from_x == to_x then
if pieceTo ~= "" then
return 0
elseif to_index >= 57 and to_index <= 64 then
inv:set_stack(from_list, from_index, "realchess:queen_black")
end
elseif from_x - 1 == to_x or from_x + 1 == to_x then
if not pieceTo:find("white") then
return 0
elseif to_index >= 57 and to_index <= 64 then
inv:set_stack(from_list, from_index, "realchess:queen_black")
end
else
return 0
end
elseif from_y + 2 == to_y then
if pieceTo ~= "" or from_y > 1 or pawnBlackMove ~= "" then
return 0
end
else
return 0
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"}
}
})