| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * $Id$ |
| 4 | * |
| 5 | * Cell attributes and behaviour |
| 6 | * |
| 7 | * (c) 2003 Straylight/Edgeware |
| 8 | */ |
| 9 | |
| 10 | /*----- Licensing notice --------------------------------------------------* |
| 11 | * |
| 12 | * This file is part of XOR. |
| 13 | * |
| 14 | * XOR is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation; either version 2 of the License, or |
| 17 | * (at your option) any later version. |
| 18 | * |
| 19 | * XOR is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with XOR; if not, write to the Free Software Foundation, |
| 26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 27 | */ |
| 28 | |
| 29 | /*----- Header files ------------------------------------------------------*/ |
| 30 | |
| 31 | #include "xor.h" |
| 32 | |
| 33 | /*----- Global variables --------------------------------------------------*/ |
| 34 | |
| 35 | const cellinfo *cellmap[UCHAR_MAX]; |
| 36 | |
| 37 | /*----- Object behaviour --------------------------------------------------*/ |
| 38 | |
| 39 | /* --- Player --- */ |
| 40 | |
| 41 | static void player_hit(game_state *g, int x, int y, int hx, int hy) |
| 42 | { |
| 43 | game_die(g, x, y); |
| 44 | } |
| 45 | |
| 46 | /* --- Bombs --- */ |
| 47 | |
| 48 | static void hbomb_hit(game_state *g, int x, int y, int hx, int hy) |
| 49 | { |
| 50 | point pt[4]; |
| 51 | int n = 0; |
| 52 | |
| 53 | pt[n].x = x; pt[n].y = y; n++; |
| 54 | pt[n].x = x; pt[n].y = y + 1; n++; |
| 55 | pt[n].x = x; pt[n].y = y - 1; n++; |
| 56 | if (hx != x) { pt[n].x = hx; pt[n].y = hy; n++; } |
| 57 | game_explode(g, pt, n); |
| 58 | } |
| 59 | |
| 60 | static void vbomb_hit(game_state *g, int x, int y, int hx, int hy) |
| 61 | { |
| 62 | point pt[4]; |
| 63 | int n = 0; |
| 64 | |
| 65 | pt[n].x = x; pt[n].y = y; n++; |
| 66 | pt[n].x = x - 1; pt[n].y = y; n++; |
| 67 | pt[n].x = x + 1; pt[n].y = y; n++; |
| 68 | if (hy != y) { pt[n].x = hx; pt[n].y = hy; n++; } |
| 69 | game_explode(g, pt, n); |
| 70 | } |
| 71 | |
| 72 | /* --- Exit --- */ |
| 73 | |
| 74 | static int exit_nudge(game_state *g, int x, int y, int dx, int dy) |
| 75 | { |
| 76 | if (g->l->m == g->l->mtot) { |
| 77 | g->f |= GF_QUIT | GF_WIN; |
| 78 | return (1); |
| 79 | } |
| 80 | return (0); |
| 81 | } |
| 82 | |
| 83 | /* --- Masks --- */ |
| 84 | |
| 85 | static int mask_nudge(game_state *g, int x, int y, int dx, int dy) |
| 86 | { |
| 87 | undo_mask(g); |
| 88 | g->l->m++; |
| 89 | return (1); |
| 90 | } |
| 91 | |
| 92 | static int switch_nudge(game_state *g, int x, int y, int dx, int dy) |
| 93 | { |
| 94 | undo_mask(g); |
| 95 | undo_levelf(g); |
| 96 | g->l->f ^= LF_DARK; |
| 97 | g->l->m++; |
| 98 | return (1); |
| 99 | } |
| 100 | |
| 101 | /* --- Map segments --- */ |
| 102 | |
| 103 | static int map_nudge(game_state *g, int x, int y, int dx, int dy) |
| 104 | { |
| 105 | undo_levelf(g); |
| 106 | g->l->f |= LF_NWMAP << (CELL(g->l, x, y) - C_NWMAP); |
| 107 | return (1); |
| 108 | } |
| 109 | |
| 110 | /* --- Chickens and fish --- */ |
| 111 | |
| 112 | static int chicken_nudge(game_state *g, int x, int y, int dx, int dy) |
| 113 | { |
| 114 | if (dx) return (0); |
| 115 | if (!(cellmap[CELL(g->l, x, y + dy) & CF_CELLMASK]->f & CF_VPASS)) |
| 116 | return (0); |
| 117 | game_moveobj(g, x, y, x, y + dy); |
| 118 | return (1); |
| 119 | } |
| 120 | |
| 121 | static int fish_nudge(game_state *g, int x, int y, int dx, int dy) |
| 122 | { |
| 123 | if (dy) return (0); |
| 124 | if (!(cellmap[CELL(g->l, x + dx, y) & CF_CELLMASK]->f & CF_HPASS)) |
| 125 | return (0); |
| 126 | game_moveobj(g, x, y, x + dx, y); |
| 127 | return (1); |
| 128 | } |
| 129 | |
| 130 | static int chicken_moveh(game_state *g, int x, int y) |
| 131 | { |
| 132 | level *l = g->l; |
| 133 | int c; |
| 134 | |
| 135 | c = CELL(l, x - 1, y) & CF_CELLMASK; |
| 136 | if (!(cellmap[c]->f & CF_HPASS)) |
| 137 | return (0); |
| 138 | game_moveobj(g, x, y, x - 1, y); |
| 139 | x--; |
| 140 | c = CELL(l, x - 1, y); |
| 141 | if (!(c & CF_INFLIGHT) && cellmap[c & CF_CELLMASK]->hit) |
| 142 | cellmap[c & CF_CELLMASK]->hit(g, x - 1, y, x, y); |
| 143 | if (cellmap[CELL(l, x - 1, y) & CF_CELLMASK]->f & CF_HPASS) |
| 144 | CELLSETFL(l, x, y, CF_INFLIGHT); |
| 145 | else |
| 146 | CELLCLRFL(l, x, y, CF_INFLIGHT); |
| 147 | return (1); |
| 148 | } |
| 149 | |
| 150 | static int fish_movev(game_state *g, int x, int y) |
| 151 | { |
| 152 | level *l = g->l; |
| 153 | int c; |
| 154 | |
| 155 | c = CELL(l, x, y + 1) & CF_CELLMASK; |
| 156 | if (!(cellmap[c]->f & CF_VPASS)) |
| 157 | return (0); |
| 158 | game_moveobj(g, x, y, x, y + 1); |
| 159 | y++; |
| 160 | c = CELL(l, x, y + 1); |
| 161 | if (!(c & CF_INFLIGHT) && cellmap[c & CF_CELLMASK]->hit) |
| 162 | cellmap[c & CF_CELLMASK]->hit(g, x, y + 1, x, y); |
| 163 | if (cellmap[CELL(l, x, y + 1) & CF_CELLMASK]->f & CF_VPASS) |
| 164 | CELLSETFL(l, x, y, CF_INFLIGHT); |
| 165 | else |
| 166 | CELLCLRFL(l, x, y, CF_INFLIGHT); |
| 167 | return (1); |
| 168 | } |
| 169 | |
| 170 | /* --- Dollies --- */ |
| 171 | |
| 172 | static int dolly_nudge(game_state *g, int x, int y, int dx, int dy) |
| 173 | { |
| 174 | if (CELL(g->l, x + dx, y + dy) != C_EMPTY) |
| 175 | return (0); |
| 176 | game_moveobj(g, x, y, x + dx, y + dy); |
| 177 | x += dx; y += dy; |
| 178 | if (CELL(g->l, x + dx, y + dy) == C_EMPTY) { |
| 179 | if (dx < 0) CELLSETFL(g->l, x, y, CF_DOLLYLEFT | CF_INFLIGHT); |
| 180 | else if (dx > 0) CELLSETFL(g->l, x, y, CF_DOLLYRIGHT | CF_INFLIGHT); |
| 181 | else if (dy < 0) CELLSETFL(g->l, x, y, CF_DOLLYUP | CF_INFLIGHT); |
| 182 | else if (dy > 0) CELLSETFL(g->l, x, y, CF_DOLLYDOWN | CF_INFLIGHT); |
| 183 | } |
| 184 | return (1); |
| 185 | } |
| 186 | |
| 187 | static int dolly_moveh(game_state *g, int x, int y) |
| 188 | { |
| 189 | int c = CELL(g->l, x, y); |
| 190 | int dx; |
| 191 | |
| 192 | if (!(c & CF_INFLIGHT)) return (0); |
| 193 | switch (c & CF_DOLLYMASK) { |
| 194 | case CF_DOLLYLEFT: dx = -1; break; |
| 195 | case CF_DOLLYRIGHT: dx = +1; break; |
| 196 | default: return (0); |
| 197 | } |
| 198 | game_moveobj(g, x, y, x + dx, y); |
| 199 | x += dx; |
| 200 | if (CELL(g->l, x + dx, y) != C_EMPTY) |
| 201 | CELLCLRFL(g->l, x, y, CF_DOLLYMASK | CF_INFLIGHT); |
| 202 | return (1); |
| 203 | } |
| 204 | |
| 205 | static int dolly_movev(game_state *g, int x, int y) |
| 206 | { |
| 207 | int c = CELL(g->l, x, y); |
| 208 | int dy; |
| 209 | |
| 210 | if (!(c & CF_INFLIGHT)) return (0); |
| 211 | switch (c & CF_DOLLYMASK) { |
| 212 | case CF_DOLLYUP: dy = -1; break; |
| 213 | case CF_DOLLYDOWN: dy = +1; break; |
| 214 | default: return (0); |
| 215 | } |
| 216 | game_moveobj(g, x, y, x, y + dy); |
| 217 | y += dy; |
| 218 | if (CELL(g->l, x, y + dy) != C_EMPTY) |
| 219 | CELLCLRFL(g->l, x, y, CF_DOLLYMASK | CF_INFLIGHT); |
| 220 | return (1); |
| 221 | } |
| 222 | |
| 223 | /*----- The object table --------------------------------------------------*/ |
| 224 | |
| 225 | static cellinfo celltab[] = { |
| 226 | |
| 227 | { /* cell type */ C_PLAYER, |
| 228 | /* flags */ CF_PLAYER, |
| 229 | /* hit */ player_hit, |
| 230 | /* nudge */ 0, |
| 231 | /* horiz move */ 0, |
| 232 | /* vert move */ 0, |
| 233 | }, |
| 234 | |
| 235 | { /* cell type */ C_SPARE, |
| 236 | /* flags */ CF_PLAYER, |
| 237 | /* hit */ player_hit, |
| 238 | /* nudge */ 0, |
| 239 | /* horiz move */ 0, |
| 240 | /* vert move */ 0, |
| 241 | }, |
| 242 | |
| 243 | { /* cell type */ C_WALL, |
| 244 | /* flags */ CF_HIDE | CF_MAP, |
| 245 | /* hit */ 0, |
| 246 | /* nudge */ 0, |
| 247 | /* horiz move */ 0, |
| 248 | /* vert move */ 0, |
| 249 | }, |
| 250 | |
| 251 | { /* cell type */ C_EXIT, |
| 252 | /* flags */ CF_MAP, |
| 253 | /* hit */ 0, |
| 254 | /* nudge */ exit_nudge, |
| 255 | /* horiz move */ 0, |
| 256 | /* vert move */ 0, |
| 257 | }, |
| 258 | |
| 259 | { /* cell type */ C_EMPTY, |
| 260 | /* flags */ CF_HPASS | CF_VPASS, |
| 261 | /* hit */ 0, |
| 262 | /* nudge */ 0, |
| 263 | /* horiz move */ 0, |
| 264 | /* vert move */ 0, |
| 265 | }, |
| 266 | |
| 267 | { /* cell type */ C_MASK, |
| 268 | /* flags */ CF_MASK | CF_MAP, |
| 269 | /* hit */ 0, |
| 270 | /* nudge */ mask_nudge, |
| 271 | /* horiz move */ 0, |
| 272 | /* vert move */ 0, |
| 273 | }, |
| 274 | |
| 275 | { /* cell type */ C_NWMAP, |
| 276 | /* flags */ 0, |
| 277 | /* hit */ 0, |
| 278 | /* nudge */ map_nudge, |
| 279 | /* horiz move */ 0, |
| 280 | /* vert move */ 0, |
| 281 | }, |
| 282 | |
| 283 | { /* cell type */ C_NEMAP, |
| 284 | /* flags */ 0, |
| 285 | /* hit */ 0, |
| 286 | /* nudge */ map_nudge, |
| 287 | /* horiz move */ 0, |
| 288 | /* vert move */ 0, |
| 289 | }, |
| 290 | |
| 291 | { /* cell type */ C_SWMAP, |
| 292 | /* flags */ 0, |
| 293 | /* hit */ 0, |
| 294 | /* nudge */ map_nudge, |
| 295 | /* horiz move */ 0, |
| 296 | /* vert move */ 0, |
| 297 | }, |
| 298 | |
| 299 | { /* cell type */ C_SEMAP, |
| 300 | /* flags */ 0, |
| 301 | /* hit */ 0, |
| 302 | /* nudge */ map_nudge, |
| 303 | /* horiz move */ 0, |
| 304 | /* vert move */ 0, |
| 305 | }, |
| 306 | |
| 307 | { /* cell type */ C_DOT, |
| 308 | /* flags */ CF_HPASS, |
| 309 | /* hit */ 0, |
| 310 | /* nudge */ 0, |
| 311 | /* horiz move */ 0, |
| 312 | /* vert move */ 0, |
| 313 | }, |
| 314 | |
| 315 | { /* cell type */ C_WAVE, |
| 316 | /* flags */ CF_VPASS, |
| 317 | /* hit */ 0, |
| 318 | /* nudge */ 0, |
| 319 | /* horiz move */ 0, |
| 320 | /* vert move */ 0, |
| 321 | }, |
| 322 | |
| 323 | { /* cell type */ C_CHICKEN, |
| 324 | /* flags */ 0, |
| 325 | /* hit */ 0, |
| 326 | /* nudge */ chicken_nudge, |
| 327 | /* horiz move */ chicken_moveh, |
| 328 | /* vert move */ 0, |
| 329 | }, |
| 330 | |
| 331 | { /* cell type */ C_FISH, |
| 332 | /* flags */ 0, |
| 333 | /* hit */ 0, |
| 334 | /* nudge */ fish_nudge, |
| 335 | /* horiz move */ 0, |
| 336 | /* vert move */ fish_movev, |
| 337 | }, |
| 338 | |
| 339 | { /* cell type */ C_HBOMB, |
| 340 | /* flags */ 0, |
| 341 | /* hit */ hbomb_hit, |
| 342 | /* nudge */ chicken_nudge, |
| 343 | /* horiz move */ chicken_moveh, |
| 344 | /* vert move */ 0, |
| 345 | }, |
| 346 | |
| 347 | { /* cell type */ C_VBOMB, |
| 348 | /* flags */ 0, |
| 349 | /* hit */ vbomb_hit, |
| 350 | /* nudge */ fish_nudge, |
| 351 | /* horiz move */ 0, |
| 352 | /* vert move */ fish_movev, |
| 353 | }, |
| 354 | |
| 355 | { /* cell type */ C_DOLLY, |
| 356 | /* flags */ 0, |
| 357 | /* hit */ 0, |
| 358 | /* nudge */ dolly_nudge, |
| 359 | /* horiz move */ dolly_moveh, |
| 360 | /* vert move */ dolly_movev, |
| 361 | }, |
| 362 | |
| 363 | { /* cell type */ C_SWITCH, |
| 364 | /* flags */ CF_MASK | CF_MAP, |
| 365 | /* hit */ 0, |
| 366 | /* nudge */ switch_nudge, |
| 367 | /* horiz move */ 0, |
| 368 | /* vert move */ 0, |
| 369 | }, |
| 370 | |
| 371 | { /* cell type */ C_BMUS, |
| 372 | /* flags */ 0, |
| 373 | /* hit */ 0, |
| 374 | /* nudge */ 0, |
| 375 | /* horiz move */ 0, |
| 376 | /* vert move */ 0, |
| 377 | }, |
| 378 | |
| 379 | { /* cell type */ 0, |
| 380 | /* flags */ 0, |
| 381 | /* hit */ 0, |
| 382 | /* nudge */ 0, |
| 383 | /* horiz move */ 0, |
| 384 | /* vert move */ 0, |
| 385 | } |
| 386 | }; |
| 387 | |
| 388 | void cellinfo_init(void) |
| 389 | { |
| 390 | int i; |
| 391 | |
| 392 | for (i = 0; celltab[i].c; i++) cellmap[celltab[i].c] = &celltab[i]; |
| 393 | } |
| 394 | |
| 395 | /*----- That's all, folks -------------------------------------------------*/ |