src/game.c

Mon, 31 Mar 2014 11:41:08 +0200

author
Mike Becker <universe@uap-core.de>
date
Mon, 31 Mar 2014 11:41:08 +0200
changeset 20
fd1eb081de40
parent 19
6a26114297a1
child 21
2e5846019b4f
permissions
-rw-r--r--

added optional alternate config for chess lib

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2014 Mike Becker. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 *
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28 */
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29
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30 #include "game.h"
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31 #include "network.h"
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32 #include "input.h"
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33 #include <ncurses.h>
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34 #include <string.h>
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35
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36 static const uint8_t boardx = 10, boardy = 10;
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37
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38 static void draw_board(Board board, MoveListRoot *movelist, uint8_t mycolor) {
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39
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40 for (uint8_t y = 0 ; y < 8 ; y++) {
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41 for (uint8_t x = 0 ; x < 8 ; x++) {
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42 uint8_t col = board[y][x] & COLOR_MASK;
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43 uint8_t piece = board[y][x] & PIECE_MASK;
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44 char piecec;
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45 if (piece) {
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46 piecec = piece == PAWN ? 'P' : getpiecechr(piece);
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47 } else {
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48 piecec = ' ';
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49 }
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50
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51 attrset((col == WHITE ? A_BOLD : A_DIM) |
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52 COLOR_PAIR((y&1)==(x&1) ? COL_WB : COL_BW));
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53
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54 int cy = mycolor == WHITE ? boardy-y : boardy-7+y;
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55 int cx = mycolor == WHITE ? boardx+x*3 : boardx+21-x*3;
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56 mvaddch(cy, cx, ' ');
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57 mvaddch(cy, cx+1, piecec);
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58 mvaddch(cy, cx+2, ' ');
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59 }
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60 }
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61
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62 attrset(A_NORMAL);
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63 for (uint8_t i = 0 ; i < 8 ; i++) {
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64 int x = mycolor == WHITE ? boardx+i*3+1 : boardx+22-i*3;
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65 int y = mycolor == WHITE ? boardy-i : boardy-7+i;
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66 mvaddch(boardy+1, x, 'a'+i);
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67 mvaddch(y, boardx-2, '1'+i);
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68 }
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69
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70 /* move log */
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71 // TODO: introduce window to avoid bugs with a long move log
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72 uint8_t logy = 0;
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73 const uint8_t logx = boardx + 30;
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74 int logi = 1;
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75 MoveList *logelem = movelist->first;
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76
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77 while (logelem) {
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78 logi++;
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79 if (logi % 2 == 0) {
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80 if ((logi - 2) % 4 == 0) {
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81 logy++;
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82 wmove(tchess_window, logy, logx);
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83 }
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84 printw("%d. ", logi / 2);
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85 }
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86
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87 if (logelem) {
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88 Move move = logelem->move;
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89 char logstr[] = {
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90 getpiecechr(move.piece),
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91 filechr(move.fromfile), rowchr(move.fromrow),
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92 move.capture ? 'x':'\0',
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93 filechr(move.tofile), rowchr(move.torow),
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94 move.check ? '+' : (move.checkmate ? '#' :
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95 (move.promotion ? '=' : '\0')),
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96 move.promotion ? getpiecechr(move.promotion) : '\0',
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97 ' '
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98 };
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99 for (int stri = 0 ; stri < sizeof(logstr) ; stri++) {
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100 if (logstr[stri]) {
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101 addch(logstr[stri]);
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102 }
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103 }
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104
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105 logelem = logelem->next;
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106 }
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107 }
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108 }
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109
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110
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111 static int sendmove(Board board, MoveListRoot *movelist,
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112 uint8_t mycolor, int opponent) {
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113
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114 const size_t buflen = 8;
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115 char movestr[buflen];
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116 _Bool remisrejected = FALSE;
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117 uint8_t code;
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118
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119 int inputy = getmaxy(tchess_window) - 6;
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120 while (1) {
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121 move(inputy, 0);
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122 if (remisrejected) {
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123 printw(
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124 "Use chess notation to enter your move.\n"
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125 "Remis offer rejected - type 'surr' to surrender. \n\n"
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126 "Type your move: ");
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127 } else {
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128 printw(
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129 "Use chess notation to enter your move.\n"
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130 "Or type 'surr' to surrender or 'remis' to offer remis.\n\n"
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131 "Type your move: ");
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132 }
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133 clrtoeol();
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134 refresh();
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135 getnstr(movestr, buflen);
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136
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137 if (strncmp(movestr, "surr", buflen) == 0) {
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138 printw("You surrendered!");
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139 clrtoeol();
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140 refresh();
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141 net_send_code(opponent, NETCODE_SURRENDER);
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142 return 1;
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143 } else if (strncmp(movestr, "remis", buflen) == 0) {
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144 if (!remisrejected) {
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145 net_send_code(opponent, NETCODE_REMIS);
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146 printw("Remis offer sent - waiting for acceptance...");
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147 refresh();
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148 if (net_recieve_code(opponent) == NETCODE_ACCEPT) {
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149 printw("\rRemis accepted!");
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parents: 6
diff changeset
150 clrtoeol();
8
52d742aee695 implemented simple pawn movement
Mike Becker <universe@uap-core.de>
parents: 7
diff changeset
151 refresh();
7
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Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
152 return 1;
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Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
153 } else {
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Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
154 remisrejected = TRUE;
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Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
155 }
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
156 }
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
157 } else {
8
52d742aee695 implemented simple pawn movement
Mike Becker <universe@uap-core.de>
parents: 7
diff changeset
158 Move move;
16
a298c6637c30 introduced status codes for get_location to produce detailed error messages + added knight rules
Mike Becker <universe@uap-core.de>
parents: 15
diff changeset
159 int eval_result = eval_move(board, mycolor, movestr, &move);
a298c6637c30 introduced status codes for get_location to produce detailed error messages + added knight rules
Mike Becker <universe@uap-core.de>
parents: 15
diff changeset
160 switch (eval_result) {
18
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Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
161 case VALID_MOVE_SYNTAX:
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Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
162 net_send_code(opponent, NETCODE_MOVE);
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Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
163 net_send_data(opponent, &move, sizeof(Move));
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Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
164 code = net_recieve_code(opponent);
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parents: 17
diff changeset
165 move.check = code == NETCODE_CHECK;
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parents: 17
diff changeset
166 move.checkmate = code == NETCODE_CHECKMATE;
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Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
167 addmove(movelist, &move);
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Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
168 if (code == NETCODE_DECLINE) {
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parents: 17
diff changeset
169 printw("Invalid move.");
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Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
170 } else {
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parents: 17
diff changeset
171 apply_move(board, &move);
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parents: 17
diff changeset
172 if (move.checkmate) {
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parents: 17
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173 printw("Checkmate!");
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parents: 17
diff changeset
174 clrtoeol();
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parents: 17
diff changeset
175 return 1;
14
970748b9a73b fixed crucial bug where both players could move at the same time + added pawn rules (TODO: en passant)
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parents: 13
diff changeset
176 } else {
18
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177 return 0;
11
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parents: 10
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178 }
18
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179 }
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parents: 17
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180 break;
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181 case AMBIGUOUS_MOVE:
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182 printw("Ambiguous move - please specify the piece to move.");
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183 break;
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184 case INVALID_POSITION:
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185 printw("Cannot find the piece that shall be moved.");
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186 break;
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diff changeset
187 case NEED_PROMOTION:
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188 printw("You need to promote the pawn (append \"=Q\" e.g.)!");
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parents: 17
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189 break;
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190 default:
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191 printw("Can't interpret move - please use algebraic notation.");
8
52d742aee695 implemented simple pawn movement
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192 }
16
a298c6637c30 introduced status codes for get_location to produce detailed error messages + added knight rules
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diff changeset
193 clrtoeol();
7
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194 }
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195 }
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196 }
41468077b5bb implemented chess board and remis/surrender messages
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parents: 6
diff changeset
197
18
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diff changeset
198 static int recvmove(Board board, MoveListRoot *movelist, int opponent) {
7
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parents: 6
diff changeset
199
18
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diff changeset
200 int inputy = getmaxy(tchess_window) - 6;
7
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diff changeset
201 while (1) {
18
6008840b859e fixed bishop + added pawn promotion + added move log
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diff changeset
202 move(inputy, 0);
7
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parents: 6
diff changeset
203 printw("Awaiting opponent move...");
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parents: 6
diff changeset
204 clrtoeol();
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diff changeset
205 refresh();
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parents: 6
diff changeset
206
41468077b5bb implemented chess board and remis/surrender messages
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parents: 6
diff changeset
207 // TODO: nonblocking
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diff changeset
208 uint32_t code = net_recieve_code(opponent);
8
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diff changeset
209
52d742aee695 implemented simple pawn movement
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parents: 7
diff changeset
210 Move move;
7
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parents: 6
diff changeset
211 switch (code) {
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parents: 6
diff changeset
212 case NETCODE_SURRENDER:
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parents: 6
diff changeset
213 printw("\rYour opponent surrendered!");
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parents: 6
diff changeset
214 clrtoeol();
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diff changeset
215 return 1;
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Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
216 case NETCODE_REMIS:
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parents: 6
diff changeset
217 if (prompt_yesno(
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parents: 6
diff changeset
218 "\rYour opponent offers remis - do you accept")) {
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parents: 6
diff changeset
219 printw("\rRemis accepted!");
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Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
220 clrtoeol();
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Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
221 net_send_code(opponent, NETCODE_ACCEPT);
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Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
222 return 1;
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
223 } else {
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parents: 6
diff changeset
224 net_send_code(opponent, NETCODE_DECLINE);
41468077b5bb implemented chess board and remis/surrender messages
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parents: 6
diff changeset
225 }
41468077b5bb implemented chess board and remis/surrender messages
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parents: 6
diff changeset
226 break;
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parents: 6
diff changeset
227 case NETCODE_MOVE:
8
52d742aee695 implemented simple pawn movement
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parents: 7
diff changeset
228 net_recieve_data(opponent, &move, sizeof(Move));
11
08d7a6e3ec31 added network messages for check and checkmate
Mike Becker <universe@uap-core.de>
parents: 10
diff changeset
229 if (validate_move(board, &move)) {
8
52d742aee695 implemented simple pawn movement
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parents: 7
diff changeset
230 apply_move(board, &move);
18
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
231 addmove(movelist, &move);
11
08d7a6e3ec31 added network messages for check and checkmate
Mike Becker <universe@uap-core.de>
parents: 10
diff changeset
232 if (move.check) {
08d7a6e3ec31 added network messages for check and checkmate
Mike Becker <universe@uap-core.de>
parents: 10
diff changeset
233 net_send_code(opponent, NETCODE_CHECK);
08d7a6e3ec31 added network messages for check and checkmate
Mike Becker <universe@uap-core.de>
parents: 10
diff changeset
234 } else if (move.checkmate) {
08d7a6e3ec31 added network messages for check and checkmate
Mike Becker <universe@uap-core.de>
parents: 10
diff changeset
235 net_send_code(opponent, NETCODE_CHECKMATE);
08d7a6e3ec31 added network messages for check and checkmate
Mike Becker <universe@uap-core.de>
parents: 10
diff changeset
236 } else {
08d7a6e3ec31 added network messages for check and checkmate
Mike Becker <universe@uap-core.de>
parents: 10
diff changeset
237 net_send_code(opponent, NETCODE_ACCEPT);
08d7a6e3ec31 added network messages for check and checkmate
Mike Becker <universe@uap-core.de>
parents: 10
diff changeset
238 }
8
52d742aee695 implemented simple pawn movement
Mike Becker <universe@uap-core.de>
parents: 7
diff changeset
239 return 0;
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Mike Becker <universe@uap-core.de>
parents: 7
diff changeset
240 } else {
52d742aee695 implemented simple pawn movement
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parents: 7
diff changeset
241 net_send_code(opponent, NETCODE_DECLINE);
52d742aee695 implemented simple pawn movement
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parents: 7
diff changeset
242 }
7
41468077b5bb implemented chess board and remis/surrender messages
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parents: 6
diff changeset
243 }
41468077b5bb implemented chess board and remis/surrender messages
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parents: 6
diff changeset
244 }
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Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
245 }
6
daaf6e5b3501 structured code
Mike Becker <universe@uap-core.de>
parents:
diff changeset
246
18
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
247 void freemovelist(MoveListRoot* list) {
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Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
248 MoveList *elem;
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parents: 17
diff changeset
249 elem = list->first;
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parents: 17
diff changeset
250 while (elem) {
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Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
251 MoveList *cur = elem;
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parents: 17
diff changeset
252 elem = elem->next;
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parents: 17
diff changeset
253 free(cur);
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Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
254 };
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Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
255 free(list);
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
256 }
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
257
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
258 void addmove(MoveListRoot* list, Move *move) {
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Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
259 MoveList *elem = malloc(sizeof(MoveList));
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
260 elem->next = NULL;
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
261 elem->move = *move;
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
262
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
263 if (list->last) {
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
264 list->last->next = elem;
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
265 list->last = elem;
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
266 } else {
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
267 list->first = list->last = elem;
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Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
268 }
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
269 }
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
270
6
daaf6e5b3501 structured code
Mike Becker <universe@uap-core.de>
parents:
diff changeset
271 void game_start(Settings *settings, int opponent) {
7
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Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
272 _Bool myturn = is_server(settings) ==
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
273 (settings->gameinfo.servercolor == WHITE);
8
52d742aee695 implemented simple pawn movement
Mike Becker <universe@uap-core.de>
parents: 7
diff changeset
274 uint8_t mycolor = myturn ? WHITE:BLACK;
52d742aee695 implemented simple pawn movement
Mike Becker <universe@uap-core.de>
parents: 7
diff changeset
275
7
41468077b5bb implemented chess board and remis/surrender messages
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parents: 6
diff changeset
276 _Bool running;
6
daaf6e5b3501 structured code
Mike Becker <universe@uap-core.de>
parents:
diff changeset
277
18
6008840b859e fixed bishop + added pawn promotion + added move log
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parents: 17
diff changeset
278 MoveListRoot* movelist = calloc(1, sizeof(MoveListRoot));
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parents: 17
diff changeset
279
7
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
280 Board board = {
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parents: 6
diff changeset
281 {WROOK, WKNIGHT, WBISHOP, WQUEEN, WKING, WBISHOP, WKNIGHT, WROOK},
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parents: 6
diff changeset
282 {WPAWN, WPAWN, WPAWN, WPAWN, WPAWN, WPAWN, WPAWN, WPAWN},
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Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
283 {0, 0, 0, 0, 0, 0, 0, 0},
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
284 {0, 0, 0, 0, 0, 0, 0, 0},
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
285 {0, 0, 0, 0, 0, 0, 0, 0},
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
286 {0, 0, 0, 0, 0, 0, 0, 0},
41468077b5bb implemented chess board and remis/surrender messages
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parents: 6
diff changeset
287 {BPAWN, BPAWN, BPAWN, BPAWN, BPAWN, BPAWN, BPAWN, BPAWN},
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parents: 6
diff changeset
288 {BROOK, BKNIGHT, BBISHOP, BQUEEN, BKING, BBISHOP, BKNIGHT, BROOK}
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parents: 6
diff changeset
289 };
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parents: 6
diff changeset
290
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
291 do {
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parents: 6
diff changeset
292 clear();
18
6008840b859e fixed bishop + added pawn promotion + added move log
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parents: 17
diff changeset
293 draw_board(board, movelist, mycolor);
7
41468077b5bb implemented chess board and remis/surrender messages
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parents: 6
diff changeset
294 if (myturn) {
18
6008840b859e fixed bishop + added pawn promotion + added move log
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parents: 17
diff changeset
295 running = !sendmove(board, movelist, mycolor, opponent);
7
41468077b5bb implemented chess board and remis/surrender messages
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parents: 6
diff changeset
296 } else {
18
6008840b859e fixed bishop + added pawn promotion + added move log
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parents: 17
diff changeset
297 running = !recvmove(board, movelist, opponent);
7
41468077b5bb implemented chess board and remis/surrender messages
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parents: 6
diff changeset
298 flushinp(); // flush any input the user hacked in while waiting
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
299 }
11
08d7a6e3ec31 added network messages for check and checkmate
Mike Becker <universe@uap-core.de>
parents: 10
diff changeset
300 myturn ^= TRUE;
7
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
301 } while (running);
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
302
18
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
303 freemovelist(movelist);
6008840b859e fixed bishop + added pawn promotion + added move log
Mike Becker <universe@uap-core.de>
parents: 17
diff changeset
304
7
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
305 mvaddstr(getmaxy(tchess_window)-1, 0,
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
306 "Game has ended. Press any key to leave...");
41468077b5bb implemented chess board and remis/surrender messages
Mike Becker <universe@uap-core.de>
parents: 6
diff changeset
307 getch();
6
daaf6e5b3501 structured code
Mike Becker <universe@uap-core.de>
parents:
diff changeset
308 }

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