Mon, 31 Mar 2014 15:03:25 +0200
introduced game state structure
universe@6 | 1 | /* |
universe@6 | 2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
universe@6 | 3 | * |
universe@6 | 4 | * Copyright 2014 Mike Becker. All rights reserved. |
universe@6 | 5 | * |
universe@6 | 6 | * Redistribution and use in source and binary forms, with or without |
universe@6 | 7 | * modification, are permitted provided that the following conditions are met: |
universe@6 | 8 | * |
universe@6 | 9 | * 1. Redistributions of source code must retain the above copyright |
universe@6 | 10 | * notice, this list of conditions and the following disclaimer. |
universe@6 | 11 | * |
universe@6 | 12 | * 2. Redistributions in binary form must reproduce the above copyright |
universe@6 | 13 | * notice, this list of conditions and the following disclaimer in the |
universe@6 | 14 | * documentation and/or other materials provided with the distribution. |
universe@6 | 15 | * |
universe@6 | 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
universe@6 | 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
universe@6 | 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
universe@6 | 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
universe@6 | 20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
universe@6 | 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
universe@6 | 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
universe@6 | 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
universe@6 | 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
universe@6 | 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
universe@6 | 26 | * POSSIBILITY OF SUCH DAMAGE. |
universe@6 | 27 | * |
universe@6 | 28 | */ |
universe@6 | 29 | |
universe@6 | 30 | #include "game.h" |
universe@19 | 31 | #include "network.h" |
universe@7 | 32 | #include "input.h" |
universe@7 | 33 | #include <ncurses.h> |
universe@7 | 34 | #include <string.h> |
universe@7 | 35 | |
universe@7 | 36 | static const uint8_t boardx = 10, boardy = 10; |
universe@7 | 37 | |
universe@23 | 38 | static void draw_board(GameState *gamestate) { |
universe@7 | 39 | |
universe@7 | 40 | for (uint8_t y = 0 ; y < 8 ; y++) { |
universe@7 | 41 | for (uint8_t x = 0 ; x < 8 ; x++) { |
universe@23 | 42 | uint8_t col = gamestate->board[y][x] & COLOR_MASK; |
universe@23 | 43 | uint8_t piece = gamestate->board[y][x] & PIECE_MASK; |
universe@18 | 44 | char piecec; |
universe@18 | 45 | if (piece) { |
universe@18 | 46 | piecec = piece == PAWN ? 'P' : getpiecechr(piece); |
universe@18 | 47 | } else { |
universe@18 | 48 | piecec = ' '; |
universe@7 | 49 | } |
universe@7 | 50 | |
universe@7 | 51 | attrset((col == WHITE ? A_BOLD : A_DIM) | |
universe@7 | 52 | COLOR_PAIR((y&1)==(x&1) ? COL_WB : COL_BW)); |
universe@7 | 53 | |
universe@23 | 54 | int cy = gamestate->mycolor == WHITE ? boardy-y : boardy-7+y; |
universe@23 | 55 | int cx = gamestate->mycolor == WHITE ? boardx+x*3 : boardx+21-x*3; |
universe@8 | 56 | mvaddch(cy, cx, ' '); |
universe@8 | 57 | mvaddch(cy, cx+1, piecec); |
universe@8 | 58 | mvaddch(cy, cx+2, ' '); |
universe@7 | 59 | } |
universe@7 | 60 | } |
universe@7 | 61 | |
universe@7 | 62 | attrset(A_NORMAL); |
universe@7 | 63 | for (uint8_t i = 0 ; i < 8 ; i++) { |
universe@23 | 64 | int x = gamestate->mycolor == WHITE ? boardx+i*3+1 : boardx+22-i*3; |
universe@23 | 65 | int y = gamestate->mycolor == WHITE ? boardy-i : boardy-7+i; |
universe@8 | 66 | mvaddch(boardy+1, x, 'a'+i); |
universe@8 | 67 | mvaddch(y, boardx-2, '1'+i); |
universe@7 | 68 | } |
universe@18 | 69 | |
universe@18 | 70 | /* move log */ |
universe@18 | 71 | // TODO: introduce window to avoid bugs with a long move log |
universe@18 | 72 | uint8_t logy = 0; |
universe@18 | 73 | const uint8_t logx = boardx + 30; |
universe@18 | 74 | int logi = 1; |
universe@23 | 75 | MoveList *logelem = gamestate->movelist; |
universe@18 | 76 | |
universe@18 | 77 | while (logelem) { |
universe@18 | 78 | logi++; |
universe@18 | 79 | if (logi % 2 == 0) { |
universe@18 | 80 | if ((logi - 2) % 4 == 0) { |
universe@18 | 81 | logy++; |
universe@23 | 82 | move(logy, logx); |
universe@18 | 83 | } |
universe@18 | 84 | printw("%d. ", logi / 2); |
universe@18 | 85 | } |
universe@18 | 86 | |
universe@18 | 87 | if (logelem) { |
universe@18 | 88 | Move move = logelem->move; |
universe@18 | 89 | char logstr[] = { |
universe@18 | 90 | getpiecechr(move.piece), |
universe@18 | 91 | filechr(move.fromfile), rowchr(move.fromrow), |
universe@18 | 92 | move.capture ? 'x':'\0', |
universe@18 | 93 | filechr(move.tofile), rowchr(move.torow), |
universe@18 | 94 | move.check ? '+' : (move.checkmate ? '#' : |
universe@18 | 95 | (move.promotion ? '=' : '\0')), |
universe@18 | 96 | move.promotion ? getpiecechr(move.promotion) : '\0', |
universe@18 | 97 | ' ' |
universe@18 | 98 | }; |
universe@18 | 99 | for (int stri = 0 ; stri < sizeof(logstr) ; stri++) { |
universe@18 | 100 | if (logstr[stri]) { |
universe@18 | 101 | addch(logstr[stri]); |
universe@18 | 102 | } |
universe@18 | 103 | } |
universe@18 | 104 | |
universe@18 | 105 | logelem = logelem->next; |
universe@18 | 106 | } |
universe@18 | 107 | } |
universe@7 | 108 | } |
universe@7 | 109 | |
universe@8 | 110 | |
universe@23 | 111 | static int sendmove(GameState *gamestate, int opponent) { |
universe@18 | 112 | |
universe@7 | 113 | const size_t buflen = 8; |
universe@8 | 114 | char movestr[buflen]; |
universe@7 | 115 | _Bool remisrejected = FALSE; |
universe@11 | 116 | uint8_t code; |
universe@7 | 117 | |
universe@23 | 118 | int inputy = getmaxy(stdscr) - 6; |
universe@7 | 119 | while (1) { |
universe@18 | 120 | move(inputy, 0); |
universe@7 | 121 | if (remisrejected) { |
universe@7 | 122 | printw( |
universe@7 | 123 | "Use chess notation to enter your move.\n" |
universe@7 | 124 | "Remis offer rejected - type 'surr' to surrender. \n\n" |
universe@7 | 125 | "Type your move: "); |
universe@7 | 126 | } else { |
universe@7 | 127 | printw( |
universe@7 | 128 | "Use chess notation to enter your move.\n" |
universe@7 | 129 | "Or type 'surr' to surrender or 'remis' to offer remis.\n\n" |
universe@7 | 130 | "Type your move: "); |
universe@7 | 131 | } |
universe@7 | 132 | clrtoeol(); |
universe@7 | 133 | refresh(); |
universe@8 | 134 | getnstr(movestr, buflen); |
universe@7 | 135 | |
universe@8 | 136 | if (strncmp(movestr, "surr", buflen) == 0) { |
universe@7 | 137 | printw("You surrendered!"); |
universe@16 | 138 | clrtoeol(); |
universe@8 | 139 | refresh(); |
universe@7 | 140 | net_send_code(opponent, NETCODE_SURRENDER); |
universe@7 | 141 | return 1; |
universe@8 | 142 | } else if (strncmp(movestr, "remis", buflen) == 0) { |
universe@7 | 143 | if (!remisrejected) { |
universe@7 | 144 | net_send_code(opponent, NETCODE_REMIS); |
universe@7 | 145 | printw("Remis offer sent - waiting for acceptance..."); |
universe@7 | 146 | refresh(); |
universe@7 | 147 | if (net_recieve_code(opponent) == NETCODE_ACCEPT) { |
universe@7 | 148 | printw("\rRemis accepted!"); |
universe@7 | 149 | clrtoeol(); |
universe@8 | 150 | refresh(); |
universe@7 | 151 | return 1; |
universe@7 | 152 | } else { |
universe@7 | 153 | remisrejected = TRUE; |
universe@7 | 154 | } |
universe@7 | 155 | } |
universe@7 | 156 | } else { |
universe@8 | 157 | Move move; |
universe@23 | 158 | int eval_result = eval_move(gamestate, movestr, &move); |
universe@16 | 159 | switch (eval_result) { |
universe@18 | 160 | case VALID_MOVE_SYNTAX: |
universe@22 | 161 | net_send_data(opponent, NETCODE_MOVE, &move, sizeof(Move)); |
universe@18 | 162 | code = net_recieve_code(opponent); |
universe@18 | 163 | move.check = code == NETCODE_CHECK; |
universe@18 | 164 | move.checkmate = code == NETCODE_CHECKMATE; |
universe@18 | 165 | if (code == NETCODE_DECLINE) { |
universe@18 | 166 | printw("Invalid move."); |
universe@18 | 167 | } else { |
universe@23 | 168 | apply_move(gamestate, &move); |
universe@18 | 169 | if (move.checkmate) { |
universe@18 | 170 | printw("Checkmate!"); |
universe@18 | 171 | clrtoeol(); |
universe@18 | 172 | return 1; |
universe@14 | 173 | } else { |
universe@18 | 174 | return 0; |
universe@11 | 175 | } |
universe@18 | 176 | } |
universe@18 | 177 | break; |
universe@18 | 178 | case AMBIGUOUS_MOVE: |
universe@18 | 179 | printw("Ambiguous move - please specify the piece to move."); |
universe@18 | 180 | break; |
universe@18 | 181 | case INVALID_POSITION: |
universe@18 | 182 | printw("Cannot find the piece that shall be moved."); |
universe@18 | 183 | break; |
universe@18 | 184 | case NEED_PROMOTION: |
universe@18 | 185 | printw("You need to promote the pawn (append \"=Q\" e.g.)!"); |
universe@18 | 186 | break; |
universe@18 | 187 | default: |
universe@18 | 188 | printw("Can't interpret move - please use algebraic notation."); |
universe@8 | 189 | } |
universe@16 | 190 | clrtoeol(); |
universe@7 | 191 | } |
universe@7 | 192 | } |
universe@7 | 193 | } |
universe@7 | 194 | |
universe@23 | 195 | static int recvmove(GameState *gamestate, int opponent) { |
universe@7 | 196 | |
universe@23 | 197 | int inputy = getmaxy(stdscr) - 6; |
universe@7 | 198 | while (1) { |
universe@18 | 199 | move(inputy, 0); |
universe@7 | 200 | printw("Awaiting opponent move..."); |
universe@7 | 201 | clrtoeol(); |
universe@7 | 202 | refresh(); |
universe@7 | 203 | |
universe@7 | 204 | // TODO: nonblocking |
universe@7 | 205 | uint32_t code = net_recieve_code(opponent); |
universe@8 | 206 | |
universe@8 | 207 | Move move; |
universe@7 | 208 | switch (code) { |
universe@7 | 209 | case NETCODE_SURRENDER: |
universe@7 | 210 | printw("\rYour opponent surrendered!"); |
universe@7 | 211 | clrtoeol(); |
universe@7 | 212 | return 1; |
universe@7 | 213 | case NETCODE_REMIS: |
universe@7 | 214 | if (prompt_yesno( |
universe@7 | 215 | "\rYour opponent offers remis - do you accept")) { |
universe@7 | 216 | printw("\rRemis accepted!"); |
universe@7 | 217 | clrtoeol(); |
universe@7 | 218 | net_send_code(opponent, NETCODE_ACCEPT); |
universe@7 | 219 | return 1; |
universe@7 | 220 | } else { |
universe@7 | 221 | net_send_code(opponent, NETCODE_DECLINE); |
universe@7 | 222 | } |
universe@7 | 223 | break; |
universe@7 | 224 | case NETCODE_MOVE: |
universe@8 | 225 | net_recieve_data(opponent, &move, sizeof(Move)); |
universe@23 | 226 | if (validate_move(gamestate, &move)) { |
universe@23 | 227 | apply_move(gamestate, &move); |
universe@11 | 228 | if (move.check) { |
universe@11 | 229 | net_send_code(opponent, NETCODE_CHECK); |
universe@11 | 230 | } else if (move.checkmate) { |
universe@11 | 231 | net_send_code(opponent, NETCODE_CHECKMATE); |
universe@11 | 232 | } else { |
universe@11 | 233 | net_send_code(opponent, NETCODE_ACCEPT); |
universe@11 | 234 | } |
universe@8 | 235 | return 0; |
universe@8 | 236 | } else { |
universe@8 | 237 | net_send_code(opponent, NETCODE_DECLINE); |
universe@8 | 238 | } |
universe@7 | 239 | } |
universe@7 | 240 | } |
universe@7 | 241 | } |
universe@6 | 242 | |
universe@6 | 243 | void game_start(Settings *settings, int opponent) { |
universe@7 | 244 | _Bool myturn = is_server(settings) == |
universe@7 | 245 | (settings->gameinfo.servercolor == WHITE); |
universe@8 | 246 | |
universe@23 | 247 | GameState gamestate; |
universe@23 | 248 | Board initboard = { |
universe@7 | 249 | {WROOK, WKNIGHT, WBISHOP, WQUEEN, WKING, WBISHOP, WKNIGHT, WROOK}, |
universe@7 | 250 | {WPAWN, WPAWN, WPAWN, WPAWN, WPAWN, WPAWN, WPAWN, WPAWN}, |
universe@7 | 251 | {0, 0, 0, 0, 0, 0, 0, 0}, |
universe@7 | 252 | {0, 0, 0, 0, 0, 0, 0, 0}, |
universe@7 | 253 | {0, 0, 0, 0, 0, 0, 0, 0}, |
universe@7 | 254 | {0, 0, 0, 0, 0, 0, 0, 0}, |
universe@7 | 255 | {BPAWN, BPAWN, BPAWN, BPAWN, BPAWN, BPAWN, BPAWN, BPAWN}, |
universe@7 | 256 | {BROOK, BKNIGHT, BBISHOP, BQUEEN, BKING, BBISHOP, BKNIGHT, BROOK} |
universe@7 | 257 | }; |
universe@23 | 258 | memcpy(gamestate.board, initboard, sizeof(Board)); |
universe@23 | 259 | gamestate.mycolor = myturn ? WHITE:BLACK; |
universe@23 | 260 | gamestate.movelist = gamestate.lastmove = NULL; |
universe@7 | 261 | |
universe@23 | 262 | _Bool running; |
universe@7 | 263 | do { |
universe@7 | 264 | clear(); |
universe@23 | 265 | draw_board(&gamestate); |
universe@7 | 266 | if (myturn) { |
universe@23 | 267 | running = !sendmove(&gamestate, opponent); |
universe@7 | 268 | } else { |
universe@23 | 269 | running = !recvmove(&gamestate, opponent); |
universe@7 | 270 | flushinp(); // flush any input the user hacked in while waiting |
universe@7 | 271 | } |
universe@11 | 272 | myturn ^= TRUE; |
universe@7 | 273 | } while (running); |
universe@7 | 274 | |
universe@23 | 275 | gamestate_cleanup(&gamestate); |
universe@18 | 276 | |
universe@23 | 277 | mvaddstr(getmaxy(stdscr)-1, 0, |
universe@7 | 278 | "Game has ended. Press any key to leave..."); |
universe@7 | 279 | getch(); |
universe@6 | 280 | } |