Add a singleplayer mode to the chess
Jean-Patrick Guerrero
parent
b5bbb1be2e
commit
63794662ee
113
src/chess.lua
113
src/chess.lua
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@ -38,30 +38,28 @@ local piece_values = {
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king = 900
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}
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local function get_possible_moves(inv, from_idx)
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local piece, color = inv:get_stack("board", from_idx):get_name():match(":(%w+)_(%w+)")
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local function get_possible_moves(board, from_idx)
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local piece, color = board[from_idx]:match(":(%w+)_(%w+)")
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if not piece then return end
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local moves = {}
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local from_x, from_y = index_to_xy(from_idx)
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for i = 1, 64 do
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local stack = inv:get_stack("board", i)
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local stack_name = stack:get_name()
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local stack_name = board[i]
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if stack_name:find((color == "black" and "white" or "black")) or
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stack:is_empty() then
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stack_name == "" then
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moves[i] = 0
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end
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end
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for to_idx in pairs(moves) do
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local pieceTo = inv:get_stack("board", to_idx):get_name()
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local pieceTo = board[to_idx]
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local to_x, to_y = index_to_xy(to_idx)
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-- PAWN
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if piece == "pawn" then
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if color == "white" then
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local pawnWhiteMove = inv:get_stack("board", xy_to_index(from_x, from_y - 1)):get_name()
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local pawnWhiteMove = board[xy_to_index(from_x, from_y - 1)]
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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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@ -105,7 +103,7 @@ local function get_possible_moves(inv, from_idx)
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end
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elseif color == "black" then
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local pawnBlackMove = inv:get_stack("board", xy_to_index(from_x, from_y + 1)):get_name()
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local pawnBlackMove = board[xy_to_index(from_x, from_y + 1)]
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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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@ -159,7 +157,7 @@ local function get_possible_moves(inv, from_idx)
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-- Moving down
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-- Ensure that no piece disturbs the way
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for i = from_y + 1, to_y - 1 do
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if inv:get_stack("board", xy_to_index(from_x, i)):get_name() ~= "" then
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if board[xy_to_index(from_x, i)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -167,7 +165,7 @@ local function get_possible_moves(inv, from_idx)
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-- Mocing up
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-- Ensure that no piece disturbs the way
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for i = to_y + 1, from_y - 1 do
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if inv:get_stack("board", xy_to_index(from_x, i)):get_name() ~= "" then
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if board[xy_to_index(from_x, i)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -178,7 +176,7 @@ local function get_possible_moves(inv, from_idx)
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-- mocing right
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-- ensure that no piece disturbs the way
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for i = from_x + 1, to_x - 1 do
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if inv:get_stack("board", xy_to_index(i, from_y)):get_name() ~= "" then
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if board[xy_to_index(i, from_y)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -186,7 +184,7 @@ local function get_possible_moves(inv, from_idx)
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-- Mocing left
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-- Ensure that no piece disturbs the way
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for i = to_x + 1, from_x - 1 do
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if inv:get_stack("board", xy_to_index(i, from_y)):get_name() ~= "" then
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if board[xy_to_index(i, from_y)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -248,8 +246,7 @@ local function get_possible_moves(inv, from_idx)
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-- Moving right-down
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-- Ensure that no piece disturbs the way
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for i = 1, dx - 1 do
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if inv:get_stack(
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"board", xy_to_index(from_x + i, from_y + i)):get_name() ~= "" then
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if board[xy_to_index(from_x + i, from_y + i)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -257,8 +254,7 @@ local function get_possible_moves(inv, from_idx)
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-- Moving right-up
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-- Ensure that no piece disturbs the way
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for i = 1, dx - 1 do
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if inv:get_stack(
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"board", xy_to_index(from_x + i, from_y - i)):get_name() ~= "" then
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if board[xy_to_index(from_x + i, from_y - i)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -268,8 +264,7 @@ local function get_possible_moves(inv, from_idx)
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-- Moving left-down
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-- Ensure that no piece disturbs the way
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for i = 1, dx - 1 do
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if inv:get_stack(
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"board", xy_to_index(from_x - i, from_y + i)):get_name() ~= "" then
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if board[xy_to_index(from_x - i, from_y + i)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -277,8 +272,7 @@ local function get_possible_moves(inv, from_idx)
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-- Moving left-up
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-- ensure that no piece disturbs the way
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for i = 1, dx - 1 do
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if inv:get_stack(
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"board", xy_to_index(from_x - i, from_y - i)):get_name() ~= "" then
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if board[xy_to_index(from_x - i, from_y - i)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -310,7 +304,7 @@ local function get_possible_moves(inv, from_idx)
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-- Moving down
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-- Ensure that no piece disturbs the way
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for i = from_y + 1, to_y - 1 do
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if inv:get_stack("board", xy_to_index(from_x, i)):get_name() ~= "" then
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if board[xy_to_index(from_x, i)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -318,7 +312,7 @@ local function get_possible_moves(inv, from_idx)
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-- Mocing up
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-- Ensure that no piece disturbs the way
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for i = to_y + 1, from_y - 1 do
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if inv:get_stack("board", xy_to_index(from_x, i)):get_name() ~= "" then
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if board[xy_to_index(from_x, i)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -328,8 +322,7 @@ local function get_possible_moves(inv, from_idx)
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-- Goes right
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-- Ensure that no piece disturbs the way
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for i = 1, dx - 1 do
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if inv:get_stack(
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"board", xy_to_index(from_x + i, from_y)):get_name() ~= "" then
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if board[xy_to_index(from_x + i, from_y)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -337,8 +330,7 @@ local function get_possible_moves(inv, from_idx)
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-- Goes right-down
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-- Ensure that no piece disturbs the way
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for i = 1, dx - 1 do
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if inv:get_stack(
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"board", xy_to_index(from_x + i, from_y + i)):get_name() ~= "" then
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if board[xy_to_index(from_x + i, from_y + i)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -346,8 +338,7 @@ local function get_possible_moves(inv, from_idx)
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-- Goes right-up
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-- Ensure that no piece disturbs the way
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for i = 1, dx - 1 do
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if inv:get_stack(
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"board", xy_to_index(from_x + i, from_y - i)):get_name() ~= "" then
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if board[xy_to_index(from_x + i, from_y - i)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -359,7 +350,7 @@ local function get_possible_moves(inv, from_idx)
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-- mocing right
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-- ensure that no piece disturbs the way
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for i = from_x + 1, to_x - 1 do
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if inv:get_stack("board", xy_to_index(i, from_y)):get_name() ~= "" then
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if board[xy_to_index(i, from_y)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -367,7 +358,7 @@ local function get_possible_moves(inv, from_idx)
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-- Mocing left
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-- Ensure that no piece disturbs the way
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for i = to_x + 1, from_x - 1 do
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if inv:get_stack("board", xy_to_index(i, from_y)):get_name() ~= "" then
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if board[xy_to_index(i, from_y)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -376,8 +367,7 @@ local function get_possible_moves(inv, from_idx)
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-- Goes left-down
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-- Ensure that no piece disturbs the way
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for i = 1, dx - 1 do
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if inv:get_stack(
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"board", xy_to_index(from_x - i, from_y + i)):get_name() ~= "" then
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if board[xy_to_index(from_x - i, from_y + i)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -385,8 +375,7 @@ local function get_possible_moves(inv, from_idx)
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-- Goes left-up
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-- Ensure that no piece disturbs the way
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for i = 1, dx - 1 do
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if inv:get_stack(
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"board", xy_to_index(from_x - i, from_y - i)):get_name() ~= "" then
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if board[xy_to_index(from_x - i, from_y - i)] ~= "" then
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moves[to_idx] = nil
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end
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end
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@ -415,9 +404,7 @@ local function get_possible_moves(inv, from_idx)
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if not next(moves) then return end
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for i in pairs(moves) do
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local stack = inv:get_stack("board", tonumber(i))
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local stack_name = stack:get_name()
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local stack_name = board[tonumber(i)]
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if stack_name ~= "" then
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for p, value in pairs(piece_values) do
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if stack_name:find(p) then
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@ -593,6 +580,14 @@ for i = 1, #pieces do
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end
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pieces_str = pieces_str .. "69=mailbox_blank16.png"
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local fs_init = [[
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size[4,1.2;]
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no_prepend[]
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label[0,0;Select a mode:]
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button[0,0.5;2,1;single;Singleplayer]
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button[2,0.5;2,1;multi;Multiplayer]
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]]
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local fs = [[
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size[14.7,10;]
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no_prepend[]
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@ -686,7 +681,7 @@ 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("formspec", fs_init)
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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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@ -702,6 +697,7 @@ function realchess.init(pos)
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meta:set_string("moves", "")
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meta:set_string("eaten", "")
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meta:set_string("mode", "")
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inv:set_list("board", pieces)
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inv:set_size("board", 64)
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@ -1233,24 +1229,19 @@ function realchess.move(pos, from_list, from_index, to_list, to_index, _, player
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get_moves_list(meta, pieceFrom, pieceTo, pieceTo_s, from_index, to_index)
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get_eaten_list(meta, pieceTo, pieceTo_s)
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--print("from_index: " .. from_index)
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--print("to_index: " .. to_index)
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return 1
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end
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function realchess.on_move(pos, from_list, from_index)
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local meta = minetest.get_meta(pos)
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local inv = meta:get_inventory()
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inv:set_stack(from_list, from_index, "")
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local function ai_move(inv, meta)
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local board_t = board_to_table(inv)
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local lastMove = meta:get_string("lastMove")
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if lastMove == "white" then
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update_formspec(meta)
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local moves = {}
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for i = 1, 64 do
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local possibleMoves = get_possible_moves(inv, i)
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local possibleMoves = get_possible_moves(board_t, i)
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local stack_name = inv:get_stack("board", i):get_name()
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if stack_name:find("black") then
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@ -1258,9 +1249,8 @@ function realchess.on_move(pos, from_list, from_index)
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end
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end
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--minetest.log("warning", "moves: " .. dump(moves))
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local choice_from, choice_to = best_move(moves)
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local pieceFrom = inv:get_stack("board", choice_from):get_name()
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local pieceTo = inv:get_stack("board", choice_to):get_name()
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local pieceTo_s = pieceTo ~= "" and pieceTo:match(":(%w+_%w+)") or ""
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@ -1313,7 +1303,12 @@ function realchess.on_move(pos, from_list, from_index)
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return
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end
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else
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inv:set_stack("board", choice_to, pieceFrom)
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if pieceFrom:find("pawn") and choice_to >= 57 and choice_to <= 64 then
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inv:set_stack("board", choice_to, "realchess:queen_black")
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else
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inv:set_stack("board", choice_to, pieceFrom)
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end
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inv:set_stack("board", choice_from, "")
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end
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@ -1341,6 +1336,16 @@ function realchess.on_move(pos, from_list, from_index)
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else
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update_formspec(meta)
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end
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end
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function realchess.on_move(pos, from_list, from_index)
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local meta = minetest.get_meta(pos)
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local inv = meta:get_inventory()
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inv:set_stack(from_list, from_index, "")
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if meta:get_string("mode") == "single" then
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ai_move(inv, meta)
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end
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return false
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end
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@ -1366,6 +1371,12 @@ function realchess.fields(pos, _, fields, sender)
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local lastMoveTime = meta:get_int("lastMoveTime")
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if fields.quit then return end
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if fields.single or fields.multi then
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meta:set_string("mode", (fields.single and "single" or "multi"))
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update_formspec(meta)
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return
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end
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-- Timeout is 5 min. by default for resetting the game (non-players only)
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if fields.new then
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if (playerWhite == playerName or playerBlack == playerName) then
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