3 * $Id: cell.c,v 1.1 2003/12/12 10:55:30 mdw Exp $
5 * Cell attributes and behaviour
7 * (c) 2003 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of XOR.
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.
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.
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.
29 /*----- Revision history --------------------------------------------------*
32 * Revision 1.1 2003/12/12 10:55:30 mdw
33 * Initial checkin. Not there yet.
37 /*----- Header files ------------------------------------------------------*/
41 /*----- Global variables --------------------------------------------------*/
43 const cellinfo *cellmap[UCHAR_MAX];
45 /*----- Object behaviour --------------------------------------------------*/
49 static void player_hit(game_state *g, int x, int y, int hx, int hy)
56 static void hbomb_hit(game_state *g, int x, int y, int hx, int hy)
61 pt[n].x = x; pt[n].y = y; n++;
62 pt[n].x = x; pt[n].y = y + 1; n++;
63 pt[n].x = x; pt[n].y = y - 1; n++;
64 if (hx != x) { pt[n].x = hx; pt[n].y = hy; n++; }
65 game_explode(g, pt, n);
68 static void vbomb_hit(game_state *g, int x, int y, int hx, int hy)
73 pt[n].x = x; pt[n].y = y; n++;
74 pt[n].x = x - 1; pt[n].y = y; n++;
75 pt[n].x = x + 1; pt[n].y = y; n++;
76 if (hy != y) { pt[n].x = hx; pt[n].y = hy; n++; }
77 game_explode(g, pt, n);
82 static int exit_nudge(game_state *g, int x, int y, int dx, int dy)
84 if (g->l->m == g->l->mtot) {
85 g->f |= GF_QUIT | GF_WIN;
93 static int mask_nudge(game_state *g, int x, int y, int dx, int dy)
100 static int switch_nudge(game_state *g, int x, int y, int dx, int dy)
109 /* --- Map segments --- */
111 static int map_nudge(game_state *g, int x, int y, int dx, int dy)
114 g->l->f |= LF_NWMAP << (CELL(g->l, x, y) - C_NWMAP);
118 /* --- Chickens and fish --- */
120 static int chicken_nudge(game_state *g, int x, int y, int dx, int dy)
123 if (!(cellmap[CELL(g->l, x, y + dy) & CF_CELLMASK]->f & CF_VPASS))
125 game_moveobj(g, x, y, x, y + dy);
129 static int fish_nudge(game_state *g, int x, int y, int dx, int dy)
132 if (!(cellmap[CELL(g->l, x + dx, y) & CF_CELLMASK]->f & CF_HPASS))
134 game_moveobj(g, x, y, x + dx, y);
138 static int chicken_moveh(game_state *g, int x, int y)
143 c = CELL(l, x - 1, y) & CF_CELLMASK;
144 if (!(cellmap[c]->f & CF_HPASS))
146 game_moveobj(g, x, y, x - 1, y);
148 c = CELL(l, x - 1, y);
149 if (!(c & CF_INFLIGHT) && cellmap[c & CF_CELLMASK]->hit)
150 cellmap[c & CF_CELLMASK]->hit(g, x - 1, y, x, y);
151 if (cellmap[CELL(l, x - 1, y) & CF_CELLMASK]->f & CF_HPASS)
152 CELLSETFL(l, x, y, CF_INFLIGHT);
154 CELLCLRFL(l, x, y, CF_INFLIGHT);
158 static int fish_movev(game_state *g, int x, int y)
163 c = CELL(l, x, y + 1) & CF_CELLMASK;
164 if (!(cellmap[c]->f & CF_VPASS))
166 game_moveobj(g, x, y, x, y + 1);
168 c = CELL(l, x, y + 1);
169 if (!(c & CF_INFLIGHT) && cellmap[c & CF_CELLMASK]->hit)
170 cellmap[c & CF_CELLMASK]->hit(g, x, y + 1, x, y);
171 if (cellmap[CELL(l, x, y + 1) & CF_CELLMASK]->f & CF_VPASS)
172 CELLSETFL(l, x, y, CF_INFLIGHT);
174 CELLCLRFL(l, x, y, CF_INFLIGHT);
178 /* --- Dollies --- */
180 static int dolly_nudge(game_state *g, int x, int y, int dx, int dy)
182 if (CELL(g->l, x + dx, y + dy) != C_EMPTY)
184 game_moveobj(g, x, y, x + dx, y + dy);
186 if (CELL(g->l, x + dx, y + dy) == C_EMPTY) {
187 if (dx < 0) CELLSETFL(g->l, x, y, CF_DOLLYLEFT | CF_INFLIGHT);
188 else if (dx > 0) CELLSETFL(g->l, x, y, CF_DOLLYRIGHT | CF_INFLIGHT);
189 else if (dy < 0) CELLSETFL(g->l, x, y, CF_DOLLYUP | CF_INFLIGHT);
190 else if (dy > 0) CELLSETFL(g->l, x, y, CF_DOLLYDOWN | CF_INFLIGHT);
195 static int dolly_moveh(game_state *g, int x, int y)
197 int c = CELL(g->l, x, y);
200 if (!(c & CF_INFLIGHT)) return (0);
201 switch (c & CF_DOLLYMASK) {
202 case CF_DOLLYLEFT: dx = -1; break;
203 case CF_DOLLYRIGHT: dx = +1; break;
206 game_moveobj(g, x, y, x + dx, y);
208 if (CELL(g->l, x + dx, y) != C_EMPTY)
209 CELLCLRFL(g->l, x, y, CF_DOLLYMASK | CF_INFLIGHT);
213 static int dolly_movev(game_state *g, int x, int y)
215 int c = CELL(g->l, x, y);
218 if (!(c & CF_INFLIGHT)) return (0);
219 switch (c & CF_DOLLYMASK) {
220 case CF_DOLLYUP: dy = -1; break;
221 case CF_DOLLYDOWN: dy = +1; break;
224 game_moveobj(g, x, y, x, y + dy);
226 if (CELL(g->l, x, y + dy) != C_EMPTY)
227 CELLCLRFL(g->l, x, y, CF_DOLLYMASK | CF_INFLIGHT);
231 /*----- The object table --------------------------------------------------*/
233 static cellinfo celltab[] = {
235 { /* cell type */ C_PLAYER,
236 /* flags */ CF_PLAYER,
237 /* hit */ player_hit,
243 { /* cell type */ C_SPARE,
244 /* flags */ CF_PLAYER,
245 /* hit */ player_hit,
251 { /* cell type */ C_WALL,
252 /* flags */ CF_HIDE | CF_MAP,
259 { /* cell type */ C_EXIT,
262 /* nudge */ exit_nudge,
267 { /* cell type */ C_EMPTY,
268 /* flags */ CF_HPASS | CF_VPASS,
275 { /* cell type */ C_MASK,
276 /* flags */ CF_MASK | CF_MAP,
278 /* nudge */ mask_nudge,
283 { /* cell type */ C_NWMAP,
286 /* nudge */ map_nudge,
291 { /* cell type */ C_NEMAP,
294 /* nudge */ map_nudge,
299 { /* cell type */ C_SWMAP,
302 /* nudge */ map_nudge,
307 { /* cell type */ C_SEMAP,
310 /* nudge */ map_nudge,
315 { /* cell type */ C_DOT,
316 /* flags */ CF_HPASS,
323 { /* cell type */ C_WAVE,
324 /* flags */ CF_VPASS,
331 { /* cell type */ C_CHICKEN,
334 /* nudge */ chicken_nudge,
335 /* horiz move */ chicken_moveh,
339 { /* cell type */ C_FISH,
342 /* nudge */ fish_nudge,
344 /* vert move */ fish_movev,
347 { /* cell type */ C_HBOMB,
350 /* nudge */ chicken_nudge,
351 /* horiz move */ chicken_moveh,
355 { /* cell type */ C_VBOMB,
358 /* nudge */ fish_nudge,
360 /* vert move */ fish_movev,
363 { /* cell type */ C_DOLLY,
366 /* nudge */ dolly_nudge,
367 /* horiz move */ dolly_moveh,
368 /* vert move */ dolly_movev,
371 { /* cell type */ C_SWITCH,
372 /* flags */ CF_MASK | CF_MAP,
374 /* nudge */ switch_nudge,
379 { /* cell type */ C_BMUS,
396 void cellinfo_init(void)
400 for (i = 0; celltab[i].c; i++) cellmap[celltab[i].c] = &celltab[i];
403 /*----- That's all, folks -------------------------------------------------*/