1 | |
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2 | /* |
1 | /* |
3 | * static char *rcsid_los_c = |
2 | * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game. |
4 | * "$Id: los.C,v 1.4 2006/09/10 16:00:23 root Exp $"; |
3 | * |
5 | */ |
4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
6 | |
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7 | /* |
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8 | CrossFire, A Multiplayer game for X-windows |
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9 | |
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10 | Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
5 | * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team |
11 | Copyright (C) 1992 Frank Tore Johansen |
6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
12 | |
7 | * |
13 | This program is free software; you can redistribute it and/or modify |
8 | * Crossfire TRT is free software; you can redistribute it and/or modify it |
14 | it under the terms of the GNU General Public License as published by |
9 | * under the terms of the GNU General Public License as published by the Free |
15 | the Free Software Foundation; either version 2 of the License, or |
10 | * Software Foundation; either version 2 of the License, or (at your option) |
16 | (at your option) any later version. |
11 | * any later version. |
17 | |
12 | * |
18 | This program is distributed in the hope that it will be useful, |
13 | * This program is distributed in the hope that it will be useful, but |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
21 | GNU General Public License for more details. |
16 | * for more details. |
22 | |
17 | * |
23 | You should have received a copy of the GNU General Public License |
18 | * You should have received a copy of the GNU General Public License along |
24 | along with this program; if not, write to the Free Software |
19 | * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51 |
25 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
26 | |
21 | * |
27 | The authors can be reached via e-mail at crossfire-devel@real-time.com |
22 | * The authors can be reached via e-mail to <crossfire@schmorp.de> |
28 | */ |
23 | */ |
29 | |
24 | |
30 | /* Nov 95 - inserted USE_LIGHTING code stuff in here - b.t. */ |
25 | /* Nov 95 - inserted USE_LIGHTING code stuff in here - b.t. */ |
31 | |
26 | |
32 | #include <global.h> |
27 | #include <global.h> |
33 | #include <funcpoint.h> |
28 | #include <funcpoint.h> |
34 | #include <math.h> |
29 | #include <math.h> |
35 | |
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36 | |
30 | |
37 | /* Distance must be less than this for the object to be blocked. |
31 | /* Distance must be less than this for the object to be blocked. |
38 | * An object is 1.0 wide, so if set to 0.5, it means the object |
32 | * An object is 1.0 wide, so if set to 0.5, it means the object |
39 | * that blocks half the view (0.0 is complete block) will |
33 | * that blocks half the view (0.0 is complete block) will |
40 | * block view in our tables. |
34 | * block view in our tables. |
… | |
… | |
47 | { |
41 | { |
48 | int x[4], y[4]; |
42 | int x[4], y[4]; |
49 | int index; |
43 | int index; |
50 | } blocks; |
44 | } blocks; |
51 | |
45 | |
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46 | // 31/32 == a speed hack |
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47 | // we would like to use 32 for speed, but the code loops endlessly |
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48 | // then, reason not yet identified, so only make the array use 32, |
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49 | // not the define's. |
52 | blocks block[MAP_CLIENT_X][MAP_CLIENT_Y]; |
50 | blocks block[MAP_CLIENT_X][MAP_CLIENT_Y == 31 ? 32 : MAP_CLIENT_Y]; |
53 | |
51 | |
54 | static void expand_lighted_sight (object *op); |
52 | static void expand_lighted_sight (object *op); |
55 | |
53 | |
56 | /* |
54 | /* |
57 | * Used to initialise the array used by the LOS routines. |
55 | * Used to initialise the array used by the LOS routines. |
… | |
… | |
96 | |
94 | |
97 | void |
95 | void |
98 | init_block (void) |
96 | init_block (void) |
99 | { |
97 | { |
100 | int x, y, dx, dy, i; |
98 | int x, y, dx, dy, i; |
101 | static int block_x[3] = { -1, -1, 0 }, block_y[3] = |
99 | static int block_x[3] = { -1, -1, 0 }, |
102 | { |
100 | block_y[3] = { -1, 0, -1 }; |
103 | -1, 0, -1}; |
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104 | |
101 | |
105 | for (x = 0; x < MAP_CLIENT_X; x++) |
102 | for (x = 0; x < MAP_CLIENT_X; x++) |
106 | for (y = 0; y < MAP_CLIENT_Y; y++) |
103 | for (y = 0; y < MAP_CLIENT_Y; y++) |
107 | { |
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108 | block[x][y].index = 0; |
104 | block[x][y].index = 0; |
109 | } |
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110 | |
105 | |
111 | |
106 | |
112 | /* The table should be symmetric, so only do the upper left |
107 | /* The table should be symmetric, so only do the upper left |
113 | * quadrant - makes the processing easier. |
108 | * quadrant - makes the processing easier. |
114 | */ |
109 | */ |
… | |
… | |
131 | /* For simplicity, we mirror the coordinates to block the other |
126 | /* For simplicity, we mirror the coordinates to block the other |
132 | * quadrants. |
127 | * quadrants. |
133 | */ |
128 | */ |
134 | set_block (x, y, dx, dy); |
129 | set_block (x, y, dx, dy); |
135 | if (x == MAP_CLIENT_X / 2) |
130 | if (x == MAP_CLIENT_X / 2) |
136 | { |
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137 | set_block (x, MAP_CLIENT_Y - y - 1, dx, MAP_CLIENT_Y - dy - 1); |
131 | set_block (x, MAP_CLIENT_Y - y - 1, dx, MAP_CLIENT_Y - dy - 1); |
138 | } |
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139 | else if (y == MAP_CLIENT_Y / 2) |
132 | else if (y == MAP_CLIENT_Y / 2) |
140 | { |
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141 | set_block (MAP_CLIENT_X - x - 1, y, MAP_CLIENT_X - dx - 1, dy); |
133 | set_block (MAP_CLIENT_X - x - 1, y, MAP_CLIENT_X - dx - 1, dy); |
142 | } |
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|
143 | } |
134 | } |
144 | else |
135 | else |
145 | { |
136 | { |
146 | float d1, r, s, l; |
137 | float d1, r, s, l; |
147 | |
138 | |
… | |
… | |
150 | * area. l is the distance from x,y to the line. |
141 | * area. l is the distance from x,y to the line. |
151 | * r is more a curiosity - it lets us know what direction (left/right) |
142 | * r is more a curiosity - it lets us know what direction (left/right) |
152 | * the line is off |
143 | * the line is off |
153 | */ |
144 | */ |
154 | |
145 | |
155 | d1 = (float) (pow (MAP_CLIENT_X / 2 - dx, 2) + pow (MAP_CLIENT_Y / 2 - dy, 2)); |
146 | d1 = (float) (pow (MAP_CLIENT_X / 2 - dx, 2.f) + pow (MAP_CLIENT_Y / 2 - dy, 2.f)); |
156 | r = (float) ((dy - y) * (dy - MAP_CLIENT_Y / 2) - (dx - x) * (MAP_CLIENT_X / 2 - dx)) / d1; |
147 | r = (float) ((dy - y) * (dy - MAP_CLIENT_Y / 2) - (dx - x) * (MAP_CLIENT_X / 2 - dx)) / d1; |
157 | s = (float) ((dy - y) * (MAP_CLIENT_X / 2 - dx) - (dx - x) * (MAP_CLIENT_Y / 2 - dy)) / d1; |
148 | s = (float) ((dy - y) * (MAP_CLIENT_X / 2 - dx) - (dx - x) * (MAP_CLIENT_Y / 2 - dy)) / d1; |
158 | l = FABS (sqrt (d1) * s); |
149 | l = FABS (sqrt (d1) * s); |
159 | |
150 | |
160 | if (l <= SPACE_BLOCK) |
151 | if (l <= SPACE_BLOCK) |
… | |
… | |
181 | * that if some particular space is blocked, it blocks |
172 | * that if some particular space is blocked, it blocks |
182 | * the view of the spaces 'behind' it, and those blocked |
173 | * the view of the spaces 'behind' it, and those blocked |
183 | * spaces behind it may block other spaces, etc. |
174 | * spaces behind it may block other spaces, etc. |
184 | * In this way, the chain of visibility is set. |
175 | * In this way, the chain of visibility is set. |
185 | */ |
176 | */ |
186 | |
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187 | static void |
177 | static void |
188 | set_wall (object *op, int x, int y) |
178 | set_wall (object *op, int x, int y) |
189 | { |
179 | { |
190 | int i; |
180 | int i; |
191 | |
181 | |
… | |
… | |
194 | int dx = block[x][y].x[i], dy = block[x][y].y[i], ax, ay; |
184 | int dx = block[x][y].x[i], dy = block[x][y].y[i], ax, ay; |
195 | |
185 | |
196 | /* ax, ay are the values as adjusted to be in the |
186 | /* ax, ay are the values as adjusted to be in the |
197 | * socket look structure. |
187 | * socket look structure. |
198 | */ |
188 | */ |
199 | ax = dx - (MAP_CLIENT_X - op->contr->socket.mapx) / 2; |
189 | ax = dx - (MAP_CLIENT_X - op->contr->ns->mapx) / 2; |
200 | ay = dy - (MAP_CLIENT_Y - op->contr->socket.mapy) / 2; |
190 | ay = dy - (MAP_CLIENT_Y - op->contr->ns->mapy) / 2; |
201 | |
191 | |
202 | if (ax < 0 || ax >= op->contr->socket.mapx || ay < 0 || ay >= op->contr->socket.mapy) |
192 | if (ax < 0 || ax >= op->contr->ns->mapx || ay < 0 || ay >= op->contr->ns->mapy) |
203 | continue; |
193 | continue; |
204 | #if 0 |
194 | #if 0 |
205 | LOG (llevDebug, "blocked %d %d -> %d %d\n", dx, dy, ax, ay); |
195 | LOG (llevDebug, "blocked %d %d -> %d %d\n", dx, dy, ax, ay); |
206 | #endif |
196 | #endif |
207 | /* we need to adjust to the fact that the socket |
197 | /* we need to adjust to the fact that the socket |
… | |
… | |
226 | |
216 | |
227 | if (!block[x][y].index) |
217 | if (!block[x][y].index) |
228 | return; |
218 | return; |
229 | |
219 | |
230 | /* ax, ay are coordinates as indexed into the look window */ |
220 | /* ax, ay are coordinates as indexed into the look window */ |
231 | ax = x - (MAP_CLIENT_X - op->contr->socket.mapx) / 2; |
221 | ax = x - (MAP_CLIENT_X - op->contr->ns->mapx) / 2; |
232 | ay = y - (MAP_CLIENT_Y - op->contr->socket.mapy) / 2; |
222 | ay = y - (MAP_CLIENT_Y - op->contr->ns->mapy) / 2; |
233 | |
223 | |
234 | /* If the converted coordinates are outside the viewable |
224 | /* If the converted coordinates are outside the viewable |
235 | * area for the client, return now. |
225 | * area for the client, return now. |
236 | */ |
226 | */ |
237 | if (ax < 0 || ay < 0 || ax >= op->contr->socket.mapx || ay >= op->contr->socket.mapy) |
227 | if (ax < 0 || ay < 0 || ax >= op->contr->ns->mapx || ay >= op->contr->ns->mapy) |
238 | return; |
228 | return; |
239 | |
229 | |
240 | #if 0 |
230 | #if 0 |
241 | LOG (llevDebug, "check_wall, ax,ay=%d, %d x,y = %d, %d blocksview = %d, %d\n", |
231 | LOG (llevDebug, "check_wall, ax,ay=%d, %d x,y = %d, %d blocksview = %d, %d\n", |
242 | ax, ay, x, y, op->x + x - MAP_CLIENT_X / 2, op->y + y - MAP_CLIENT_Y / 2); |
232 | ax, ay, x, y, op->x + x - MAP_CLIENT_X / 2, op->y + y - MAP_CLIENT_Y / 2); |
… | |
… | |
258 | * Clears/initialises the los-array associated to the player |
248 | * Clears/initialises the los-array associated to the player |
259 | * controlling the object. |
249 | * controlling the object. |
260 | */ |
250 | */ |
261 | |
251 | |
262 | void |
252 | void |
263 | clear_los (object *op) |
253 | clear_los (player *pl) |
264 | { |
254 | { |
265 | /* This is safer than using the socket->mapx, mapy because |
255 | /* This is safer than using the ns->mapx, mapy because |
266 | * we index the blocked_los as a 2 way array, so clearing |
256 | * we index the blocked_los as a 2 way array, so clearing |
267 | * the first z spaces may not not cover the spaces we are |
257 | * the first z spaces may not not cover the spaces we are |
268 | * actually going to use |
258 | * actually going to use |
269 | */ |
259 | */ |
270 | (void) memset ((void *) op->contr->blocked_los, 0, MAP_CLIENT_X * MAP_CLIENT_Y); |
260 | memset (pl->blocked_los, 0, MAP_CLIENT_X * MAP_CLIENT_Y); |
271 | } |
261 | } |
272 | |
262 | |
273 | /* |
263 | /* |
274 | * expand_sight goes through the array of what the given player is |
264 | * expand_sight goes through the array of what the given player is |
275 | * able to see, and expands the visible area a bit, so the player will, |
265 | * able to see, and expands the visible area a bit, so the player will, |
… | |
… | |
280 | static void |
270 | static void |
281 | expand_sight (object *op) |
271 | expand_sight (object *op) |
282 | { |
272 | { |
283 | int i, x, y, dx, dy; |
273 | int i, x, y, dx, dy; |
284 | |
274 | |
285 | for (x = 1; x < op->contr->socket.mapx - 1; x++) /* loop over inner squares */ |
275 | for (x = 1; x < op->contr->ns->mapx - 1; x++) /* loop over inner squares */ |
286 | for (y = 1; y < op->contr->socket.mapy - 1; y++) |
276 | for (y = 1; y < op->contr->ns->mapy - 1; y++) |
287 | { |
277 | { |
288 | if (!op->contr->blocked_los[x][y] && |
278 | if (!op->contr->blocked_los[x][y] && |
289 | !(get_map_flags (op->map, NULL, |
279 | !(get_map_flags (op->map, NULL, |
290 | op->x - op->contr->socket.mapx / 2 + x, |
280 | op->x - op->contr->ns->mapx / 2 + x, |
291 | op->y - op->contr->socket.mapy / 2 + y, NULL, NULL) & (P_BLOCKSVIEW | P_OUT_OF_MAP))) |
281 | op->y - op->contr->ns->mapy / 2 + y, NULL, NULL) & (P_BLOCKSVIEW | P_OUT_OF_MAP))) |
292 | { |
282 | { |
293 | |
283 | |
294 | for (i = 1; i <= 8; i += 1) |
284 | for (i = 1; i <= 8; i += 1) |
295 | { /* mark all directions */ |
285 | { /* mark all directions */ |
296 | dx = x + freearr_x[i]; |
286 | dx = x + freearr_x[i]; |
… | |
… | |
299 | op->contr->blocked_los[dx][dy] = -1; |
289 | op->contr->blocked_los[dx][dy] = -1; |
300 | } |
290 | } |
301 | } |
291 | } |
302 | } |
292 | } |
303 | |
293 | |
304 | if (MAP_DARKNESS (op->map) > 0) /* player is on a dark map */ |
294 | if (op->map->darkness > 0) /* player is on a dark map */ |
305 | expand_lighted_sight (op); |
295 | expand_lighted_sight (op); |
306 | |
296 | |
307 | |
|
|
308 | /* clear mark squares */ |
297 | /* clear mark squares */ |
309 | for (x = 0; x < op->contr->socket.mapx; x++) |
298 | for (x = 0; x < op->contr->ns->mapx; x++) |
310 | for (y = 0; y < op->contr->socket.mapy; y++) |
299 | for (y = 0; y < op->contr->ns->mapy; y++) |
311 | if (op->contr->blocked_los[x][y] < 0) |
300 | if (op->contr->blocked_los[x][y] < 0) |
312 | op->contr->blocked_los[x][y] = 0; |
301 | op->contr->blocked_los[x][y] = 0; |
313 | } |
302 | } |
314 | |
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315 | |
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316 | |
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317 | |
303 | |
318 | /* returns true if op carries one or more lights |
304 | /* returns true if op carries one or more lights |
319 | * This is a trivial function now days, but it used to |
305 | * This is a trivial function now days, but it used to |
320 | * be a bit longer. Probably better for callers to just |
306 | * be a bit longer. Probably better for callers to just |
321 | * check the op->glow_radius instead of calling this. |
307 | * check the op->glow_radius instead of calling this. |
… | |
… | |
333 | |
319 | |
334 | static void |
320 | static void |
335 | expand_lighted_sight (object *op) |
321 | expand_lighted_sight (object *op) |
336 | { |
322 | { |
337 | int x, y, darklevel, ax, ay, basex, basey, mflags, light, x1, y1; |
323 | int x, y, darklevel, ax, ay, basex, basey, mflags, light, x1, y1; |
338 | mapstruct *m = op->map; |
324 | maptile *m = op->map; |
339 | sint16 nx, ny; |
325 | sint16 nx, ny; |
340 | |
326 | |
341 | darklevel = MAP_DARKNESS (m); |
327 | darklevel = m->darkness; |
342 | |
328 | |
343 | /* If the player can see in the dark, lower the darklevel for him */ |
329 | /* If the player can see in the dark, lower the darklevel for him */ |
344 | if (QUERY_FLAG (op, FLAG_SEE_IN_DARK)) |
330 | if (QUERY_FLAG (op, FLAG_SEE_IN_DARK)) |
345 | darklevel -= 2; |
331 | darklevel -= 2; |
346 | |
332 | |
… | |
… | |
355 | /* Do a sanity check. If not valid, some code below may do odd |
341 | /* Do a sanity check. If not valid, some code below may do odd |
356 | * things. |
342 | * things. |
357 | */ |
343 | */ |
358 | if (darklevel > MAX_DARKNESS) |
344 | if (darklevel > MAX_DARKNESS) |
359 | { |
345 | { |
360 | LOG (llevError, "Map darkness for %s on %s is too high (%d)\n", &op->name, op->map->path, darklevel); |
346 | LOG (llevError, "Map darkness for %s on %s is too high (%d)\n", &op->name, &op->map->path, darklevel); |
361 | darklevel = MAX_DARKNESS; |
347 | darklevel = MAX_DARKNESS; |
362 | } |
348 | } |
363 | |
349 | |
364 | /* First, limit player furthest (unlighted) vision */ |
350 | /* First, limit player furthest (unlighted) vision */ |
365 | for (x = 0; x < op->contr->socket.mapx; x++) |
351 | for (x = 0; x < op->contr->ns->mapx; x++) |
366 | for (y = 0; y < op->contr->socket.mapy; y++) |
352 | for (y = 0; y < op->contr->ns->mapy; y++) |
367 | if (op->contr->blocked_los[x][y] != 100) |
353 | if (op->contr->blocked_los[x][y] != 100) |
368 | op->contr->blocked_los[x][y] = MAX_LIGHT_RADII; |
354 | op->contr->blocked_los[x][y] = MAX_LIGHT_RADII; |
369 | |
355 | |
370 | /* the spaces[] darkness value contains the information we need. |
356 | /* the spaces[] darkness value contains the information we need. |
371 | * Only process the area of interest. |
357 | * Only process the area of interest. |
372 | * the basex, basey values represent the position in the op->contr->blocked_los |
358 | * the basex, basey values represent the position in the op->contr->blocked_los |
373 | * array. Its easier to just increment them here (and start with the right |
359 | * array. Its easier to just increment them here (and start with the right |
374 | * value) than to recalculate them down below. |
360 | * value) than to recalculate them down below. |
375 | */ |
361 | */ |
376 | for (x = (op->x - op->contr->socket.mapx / 2 - MAX_LIGHT_RADII), basex = -MAX_LIGHT_RADII; |
362 | for (x = (op->x - op->contr->ns->mapx / 2 - MAX_LIGHT_RADII), basex = -MAX_LIGHT_RADII; |
377 | x <= (op->x + op->contr->socket.mapx / 2 + MAX_LIGHT_RADII); x++, basex++) |
363 | x <= (op->x + op->contr->ns->mapx / 2 + MAX_LIGHT_RADII); x++, basex++) |
378 | { |
364 | { |
379 | |
365 | |
380 | for (y = (op->y - op->contr->socket.mapy / 2 - MAX_LIGHT_RADII), basey = -MAX_LIGHT_RADII; |
366 | for (y = (op->y - op->contr->ns->mapy / 2 - MAX_LIGHT_RADII), basey = -MAX_LIGHT_RADII; |
381 | y <= (op->y + op->contr->socket.mapy / 2 + MAX_LIGHT_RADII); y++, basey++) |
367 | y <= (op->y + op->contr->ns->mapy / 2 + MAX_LIGHT_RADII); y++, basey++) |
382 | { |
368 | { |
383 | m = op->map; |
369 | m = op->map; |
384 | nx = x; |
370 | nx = x; |
385 | ny = y; |
371 | ny = y; |
386 | |
372 | |
… | |
… | |
398 | #if 0 |
384 | #if 0 |
399 | LOG (llevDebug, "expand_lighted_sight: Found light at x=%d, y=%d, basex=%d, basey=%d\n", x, y, basex, basey); |
385 | LOG (llevDebug, "expand_lighted_sight: Found light at x=%d, y=%d, basex=%d, basey=%d\n", x, y, basex, basey); |
400 | #endif |
386 | #endif |
401 | for (ax = basex - light; ax <= basex + light; ax++) |
387 | for (ax = basex - light; ax <= basex + light; ax++) |
402 | { |
388 | { |
403 | if (ax < 0 || ax >= op->contr->socket.mapx) |
389 | if (ax < 0 || ax >= op->contr->ns->mapx) |
404 | continue; |
390 | continue; |
|
|
391 | |
405 | for (ay = basey - light; ay <= basey + light; ay++) |
392 | for (ay = basey - light; ay <= basey + light; ay++) |
406 | { |
393 | { |
407 | if (ay < 0 || ay >= op->contr->socket.mapy) |
394 | if (ay < 0 || ay >= op->contr->ns->mapy) |
408 | continue; |
395 | continue; |
409 | |
396 | |
410 | /* If the space is fully blocked, do nothing. Otherwise, we |
397 | /* If the space is fully blocked, do nothing. Otherwise, we |
411 | * brighten the space. The further the light is away from the |
398 | * brighten the space. The further the light is away from the |
412 | * source (basex-x), the less effect it has. Though light used |
399 | * source (basex-x), the less effect it has. Though light used |
… | |
… | |
416 | */ |
403 | */ |
417 | if (op->contr->blocked_los[ax][ay] != 100) |
404 | if (op->contr->blocked_los[ax][ay] != 100) |
418 | { |
405 | { |
419 | x1 = abs (basex - ax) * abs (basex - ax); |
406 | x1 = abs (basex - ax) * abs (basex - ax); |
420 | y1 = abs (basey - ay) * abs (basey - ay); |
407 | y1 = abs (basey - ay) * abs (basey - ay); |
421 | if (light > 0) |
408 | |
422 | op->contr->blocked_los[ax][ay] -= MAX ((light - isqrt (x1 + y1)), 0); |
409 | if (light > 0) op->contr->blocked_los[ax][ay] -= max (light - isqrt (x1 + y1), 0); |
423 | if (light < 0) |
|
|
424 | op->contr->blocked_los[ax][ay] -= MIN ((light + isqrt (x1 + y1)), 0); |
410 | if (light < 0) op->contr->blocked_los[ax][ay] -= min (light + isqrt (x1 + y1), 0); |
425 | } |
411 | } |
426 | } /* for ay */ |
412 | } |
427 | } /* for ax */ |
413 | } |
428 | } /* if this space is providing light */ |
414 | } |
429 | } /* for y */ |
415 | } |
430 | } /* for x */ |
416 | } |
431 | |
417 | |
432 | /* Outdoor should never really be completely pitch black dark like |
418 | /* Outdoor should never really be completely pitch black dark like |
433 | * a dungeon, so let the player at least see a little around themselves |
419 | * a dungeon, so let the player at least see a little around themselves |
434 | */ |
420 | */ |
435 | if (op->map->outdoor && darklevel > (MAX_DARKNESS - 3)) |
421 | if (op->map->outdoor && darklevel > (MAX_DARKNESS - 3)) |
436 | { |
422 | { |
437 | if (op->contr->blocked_los[op->contr->socket.mapx / 2][op->contr->socket.mapy / 2] > (MAX_DARKNESS - 3)) |
423 | if (op->contr->blocked_los[op->contr->ns->mapx / 2][op->contr->ns->mapy / 2] > (MAX_DARKNESS - 3)) |
438 | op->contr->blocked_los[op->contr->socket.mapx / 2][op->contr->socket.mapy / 2] = MAX_DARKNESS - 3; |
424 | op->contr->blocked_los[op->contr->ns->mapx / 2][op->contr->ns->mapy / 2] = MAX_DARKNESS - 3; |
439 | |
425 | |
440 | for (x = -1; x <= 1; x++) |
426 | for (x = -1; x <= 1; x++) |
441 | for (y = -1; y <= 1; y++) |
427 | for (y = -1; y <= 1; y++) |
442 | { |
428 | { |
443 | if (op->contr->blocked_los[x + op->contr->socket.mapx / 2][y + op->contr->socket.mapy / 2] > (MAX_DARKNESS - 2)) |
429 | if (op->contr->blocked_los[x + op->contr->ns->mapx / 2][y + op->contr->ns->mapy / 2] > (MAX_DARKNESS - 2)) |
444 | op->contr->blocked_los[x + op->contr->socket.mapx / 2][y + op->contr->socket.mapy / 2] = MAX_DARKNESS - 2; |
430 | op->contr->blocked_los[x + op->contr->ns->mapx / 2][y + op->contr->ns->mapy / 2] = MAX_DARKNESS - 2; |
445 | } |
431 | } |
446 | } |
432 | } |
|
|
433 | |
447 | /* grant some vision to the player, based on the darklevel */ |
434 | /* grant some vision to the player, based on the darklevel */ |
448 | for (x = darklevel - MAX_DARKNESS; x < MAX_DARKNESS + 1 - darklevel; x++) |
435 | for (x = darklevel - MAX_DARKNESS; x < MAX_DARKNESS + 1 - darklevel; x++) |
449 | for (y = darklevel - MAX_DARKNESS; y < MAX_DARKNESS + 1 - darklevel; y++) |
436 | for (y = darklevel - MAX_DARKNESS; y < MAX_DARKNESS + 1 - darklevel; y++) |
450 | if (!(op->contr->blocked_los[x + op->contr->socket.mapx / 2][y + op->contr->socket.mapy / 2] == 100)) |
437 | if (!(op->contr->blocked_los[x + op->contr->ns->mapx / 2][y + op->contr->ns->mapy / 2] == 100)) |
451 | op->contr->blocked_los[x + op->contr->socket.mapx / 2][y + op->contr->socket.mapy / 2] -= |
438 | op->contr->blocked_los[x + op->contr->ns->mapx / 2][y + op->contr->ns->mapy / 2] -= |
452 | MAX (0, 6 - darklevel - MAX (abs (x), abs (y))); |
439 | MAX (0, 6 - darklevel - MAX (abs (x), abs (y))); |
453 | } |
440 | } |
454 | |
441 | |
455 | /* blinded_sight() - sets all veiwable squares to blocked except |
442 | /* blinded_sight() - sets all veiwable squares to blocked except |
456 | * for the one the central one that the player occupies. A little |
443 | * for the one the central one that the player occupies. A little |
457 | * odd that you can see yourself (and what your standing on), but |
444 | * odd that you can see yourself (and what your standing on), but |
458 | * really need for any reasonable game play. |
445 | * really need for any reasonable game play. |
459 | */ |
446 | */ |
460 | |
|
|
461 | static void |
447 | static void |
462 | blinded_sight (object *op) |
448 | blinded_sight (object *op) |
463 | { |
449 | { |
464 | int x, y; |
450 | int x, y; |
465 | |
451 | |
466 | for (x = 0; x < op->contr->socket.mapx; x++) |
452 | for (x = 0; x < op->contr->ns->mapx; x++) |
467 | for (y = 0; y < op->contr->socket.mapy; y++) |
453 | for (y = 0; y < op->contr->ns->mapy; y++) |
468 | op->contr->blocked_los[x][y] = 100; |
454 | op->contr->blocked_los[x][y] = 100; |
469 | |
455 | |
470 | op->contr->blocked_los[op->contr->socket.mapx / 2][op->contr->socket.mapy / 2] = 0; |
456 | op->contr->blocked_los[op->contr->ns->mapx / 2][op->contr->ns->mapy / 2] = 0; |
471 | } |
457 | } |
472 | |
458 | |
473 | /* |
459 | /* |
474 | * update_los() recalculates the array which specifies what is |
460 | * update_los() recalculates the array which specifies what is |
475 | * visible for the given player-object. |
461 | * visible for the given player-object. |
476 | */ |
462 | */ |
477 | |
|
|
478 | void |
463 | void |
479 | update_los (object *op) |
464 | update_los (object *op) |
480 | { |
465 | { |
481 | int dx = op->contr->socket.mapx / 2, dy = op->contr->socket.mapy / 2, x, y; |
466 | int dx = op->contr->ns->mapx / 2, dy = op->contr->ns->mapy / 2, x, y; |
482 | |
467 | |
483 | if (QUERY_FLAG (op, FLAG_REMOVED)) |
468 | if (QUERY_FLAG (op, FLAG_REMOVED)) |
484 | return; |
469 | return; |
485 | |
470 | |
486 | clear_los (op); |
471 | clear_los (op->contr); |
|
|
472 | |
487 | if (QUERY_FLAG (op, FLAG_WIZ) /* ||XRAYS(op) */ ) |
473 | if (QUERY_FLAG (op, FLAG_WIZ) /* ||XRAYS(op) */ ) |
488 | return; |
474 | return; |
489 | |
475 | |
490 | /* For larger maps, this is more efficient than the old way which |
476 | /* For larger maps, this is more efficient than the old way which |
491 | * used the chaining of the block array. Since many space views could |
477 | * used the chaining of the block array. Since many space views could |
492 | * be blocked by different spaces in front, this mean that a lot of spaces |
478 | * be blocked by different spaces in front, this mean that a lot of spaces |
493 | * could be examined multile times, as each path would be looked at. |
479 | * could be examined multile times, as each path would be looked at. |
494 | */ |
480 | */ |
495 | for (x = (MAP_CLIENT_X - op->contr->socket.mapx) / 2 - 1; x < (MAP_CLIENT_X + op->contr->socket.mapx) / 2 + 1; x++) |
481 | for (x = (MAP_CLIENT_X - op->contr->ns->mapx) / 2 - 1; x < (MAP_CLIENT_X + op->contr->ns->mapx) / 2 + 1; x++) |
496 | for (y = (MAP_CLIENT_Y - op->contr->socket.mapy) / 2 - 1; y < (MAP_CLIENT_Y + op->contr->socket.mapy) / 2 + 1; y++) |
482 | for (y = (MAP_CLIENT_Y - op->contr->ns->mapy) / 2 - 1; y < (MAP_CLIENT_Y + op->contr->ns->mapy) / 2 + 1; y++) |
497 | check_wall (op, x, y); |
483 | check_wall (op, x, y); |
498 | |
|
|
499 | |
484 | |
500 | /* do the los of the player. 3 (potential) cases */ |
485 | /* do the los of the player. 3 (potential) cases */ |
501 | if (QUERY_FLAG (op, FLAG_BLIND)) /* player is blind */ |
486 | if (QUERY_FLAG (op, FLAG_BLIND)) /* player is blind */ |
502 | blinded_sight (op); |
487 | blinded_sight (op); |
503 | else |
488 | else |
504 | expand_sight (op); |
489 | expand_sight (op); |
505 | |
490 | |
|
|
491 | //TODO: no range-checking whatsoever :( |
506 | if (QUERY_FLAG (op, FLAG_XRAYS)) |
492 | if (QUERY_FLAG (op, FLAG_XRAYS)) |
507 | { |
|
|
508 | int x, y; |
|
|
509 | |
|
|
510 | for (x = -2; x <= 2; x++) |
493 | for (int x = -2; x <= 2; x++) |
511 | for (y = -2; y <= 2; y++) |
494 | for (int y = -2; y <= 2; y++) |
512 | op->contr->blocked_los[dx + x][dy + y] = 0; |
495 | op->contr->blocked_los[dx + x][dy + y] = 0; |
513 | } |
|
|
514 | } |
496 | } |
515 | |
497 | |
516 | /* update all_map_los is like update_all_los below, |
498 | /* update all_map_los is like update_all_los below, |
517 | * but updates everyone on the map, no matter where they |
499 | * but updates everyone on the map, no matter where they |
518 | * are. This generally should not be used, as a per |
500 | * are. This generally should not be used, as a per |
519 | * specific map change doesn't make much sense when tiling |
501 | * specific map change doesn't make much sense when tiling |
520 | * is considered (lowering darkness would certainly be a |
502 | * is considered (lowering darkness would certainly be a |
521 | * strange effect if done on a tile map, as it makes |
503 | * strange effect if done on a tile map, as it makes |
522 | * the distinction between maps much more obvious to the |
504 | * the distinction between maps much more obvious to the |
523 | * players, which is should not be. |
505 | * players, which is should not be. |
524 | * Currently, this function is called from the |
506 | * Currently, this function is called from the |
525 | * change_map_light function |
507 | * change_map_light function |
526 | */ |
508 | */ |
527 | void |
509 | void |
528 | update_all_map_los (mapstruct *map) |
510 | update_all_map_los (maptile *map) |
529 | { |
511 | { |
530 | player *pl; |
512 | for_all_players (pl) |
531 | |
|
|
532 | for (pl = first_player; pl != NULL; pl = pl->next) |
|
|
533 | { |
|
|
534 | if (pl->ob->map == map) |
513 | if (pl->ob && pl->ob->map == map) |
535 | pl->do_los = 1; |
514 | pl->do_los = 1; |
536 | } |
|
|
537 | } |
515 | } |
538 | |
|
|
539 | |
516 | |
540 | /* |
517 | /* |
541 | * This function makes sure that update_los() will be called for all |
518 | * This function makes sure that update_los() will be called for all |
542 | * players on the given map within the next frame. |
519 | * players on the given map within the next frame. |
543 | * It is triggered by removal or inserting of objects which blocks |
520 | * It is triggered by removal or inserting of objects which blocks |
… | |
… | |
547 | * means that just being on the same map is not sufficient - the |
524 | * means that just being on the same map is not sufficient - the |
548 | * space that changes must be withing your viewable area. |
525 | * space that changes must be withing your viewable area. |
549 | * |
526 | * |
550 | * map is the map that changed, x and y are the coordinates. |
527 | * map is the map that changed, x and y are the coordinates. |
551 | */ |
528 | */ |
552 | |
|
|
553 | void |
529 | void |
554 | update_all_los (const mapstruct *map, int x, int y) |
530 | update_all_los (const maptile *map, int x, int y) |
555 | { |
531 | { |
556 | player *pl; |
532 | for_all_players (pl) |
557 | |
|
|
558 | for (pl = first_player; pl != NULL; pl = pl->next) |
|
|
559 | { |
533 | { |
560 | /* Player should not have a null map, but do this |
534 | /* Player should not have a null map, but do this |
561 | * check as a safety |
535 | * check as a safety |
562 | */ |
536 | */ |
563 | if (!pl->ob->map) |
537 | if (!pl->ob || !pl->ob->map || !pl->ns) |
564 | continue; |
538 | continue; |
565 | |
539 | |
566 | /* Same map is simple case - see if pl is close enough. |
540 | /* Same map is simple case - see if pl is close enough. |
567 | * Note in all cases, we did the check for same map first, |
541 | * Note in all cases, we did the check for same map first, |
568 | * and then see if the player is close enough and update |
542 | * and then see if the player is close enough and update |
… | |
… | |
572 | * so by setting it up this way, we trim processing |
546 | * so by setting it up this way, we trim processing |
573 | * some. |
547 | * some. |
574 | */ |
548 | */ |
575 | if (pl->ob->map == map) |
549 | if (pl->ob->map == map) |
576 | { |
550 | { |
577 | if ((abs (pl->ob->x - x) <= pl->socket.mapx / 2) && (abs (pl->ob->y - y) <= pl->socket.mapy / 2)) |
551 | if ((abs (pl->ob->x - x) <= pl->ns->mapx / 2) && (abs (pl->ob->y - y) <= pl->ns->mapy / 2)) |
578 | pl->do_los = 1; |
552 | pl->do_los = 1; |
579 | } |
553 | } |
|
|
554 | |
580 | /* Now we check to see if player is on adjacent |
555 | /* Now we check to see if player is on adjacent |
581 | * maps to the one that changed and also within |
556 | * maps to the one that changed and also within |
582 | * view. The tile_maps[] could be null, but in that |
557 | * view. The tile_maps[] could be null, but in that |
583 | * case it should never match the pl->ob->map, so |
558 | * case it should never match the pl->ob->map, so |
584 | * we want ever try to dereference any of the data in it. |
559 | * we want ever try to dereference any of the data in it. |
585 | */ |
560 | * |
586 | |
|
|
587 | /* The logic for 0 and 3 is to see how far the player is |
561 | * The logic for 0 and 3 is to see how far the player is |
588 | * from the edge of the map (height/width) - pl->ob->(x,y) |
562 | * from the edge of the map (height/width) - pl->ob->(x,y) |
589 | * and to add current position on this map - that gives a |
563 | * and to add current position on this map - that gives a |
590 | * distance. |
564 | * distance. |
591 | * For 1 and 2, we check to see how far the given |
565 | * For 1 and 2, we check to see how far the given |
592 | * coordinate (x,y) is from the corresponding edge, |
566 | * coordinate (x,y) is from the corresponding edge, |
593 | * and then add the players location, which gives |
567 | * and then add the players location, which gives |
594 | * a distance. |
568 | * a distance. |
595 | */ |
569 | */ |
596 | else if (pl->ob->map == map->tile_map[0]) |
570 | else if (pl->ob->map == map->tile_map[0]) |
597 | { |
571 | { |
598 | if ((abs (pl->ob->x - x) <= pl->socket.mapx / 2) && (abs (y + MAP_HEIGHT (map->tile_map[0]) - pl->ob->y) <= pl->socket.mapy / 2)) |
572 | if ((abs (pl->ob->x - x) <= pl->ns->mapx / 2) && (abs (y + map->tile_map[0]->height - pl->ob->y) <= pl->ns->mapy / 2)) |
599 | pl->do_los = 1; |
573 | pl->do_los = 1; |
600 | } |
574 | } |
601 | else if (pl->ob->map == map->tile_map[2]) |
575 | else if (pl->ob->map == map->tile_map[2]) |
602 | { |
576 | { |
603 | if ((abs (pl->ob->x - x) <= pl->socket.mapx / 2) && (abs (pl->ob->y + MAP_HEIGHT (map) - y) <= pl->socket.mapy / 2)) |
577 | if ((abs (pl->ob->x - x) <= pl->ns->mapx / 2) && (abs (pl->ob->y + map->height - y) <= pl->ns->mapy / 2)) |
604 | pl->do_los = 1; |
578 | pl->do_los = 1; |
605 | } |
579 | } |
606 | else if (pl->ob->map == map->tile_map[1]) |
580 | else if (pl->ob->map == map->tile_map[1]) |
607 | { |
581 | { |
608 | if ((abs (pl->ob->x + MAP_WIDTH (map) - x) <= pl->socket.mapx / 2) && (abs (pl->ob->y - y) <= pl->socket.mapy / 2)) |
582 | if ((abs (pl->ob->x + map->width - x) <= pl->ns->mapx / 2) && (abs (pl->ob->y - y) <= pl->ns->mapy / 2)) |
609 | pl->do_los = 1; |
583 | pl->do_los = 1; |
610 | } |
584 | } |
611 | else if (pl->ob->map == map->tile_map[3]) |
585 | else if (pl->ob->map == map->tile_map[3]) |
612 | { |
586 | { |
613 | if ((abs (x + MAP_WIDTH (map->tile_map[3]) - pl->ob->x) <= pl->socket.mapx / 2) && (abs (pl->ob->y - y) <= pl->socket.mapy / 2)) |
587 | if ((abs (x + map->tile_map[3]->width - pl->ob->x) <= pl->ns->mapx / 2) && (abs (pl->ob->y - y) <= pl->ns->mapy / 2)) |
614 | pl->do_los = 1; |
588 | pl->do_los = 1; |
615 | } |
589 | } |
616 | } |
590 | } |
617 | } |
591 | } |
618 | |
592 | |
619 | /* |
593 | /* |
620 | * Debug-routine which dumps the array which specifies the visible |
594 | * Debug-routine which dumps the array which specifies the visible |
621 | * area of a player. Triggered by the z key in DM mode. |
595 | * area of a player. Triggered by the z key in DM mode. |
622 | */ |
596 | */ |
623 | |
|
|
624 | void |
597 | void |
625 | print_los (object *op) |
598 | print_los (object *op) |
626 | { |
599 | { |
627 | int x, y; |
600 | int x, y; |
628 | char buf[50], buf2[10]; |
601 | char buf[50], buf2[10]; |
629 | |
602 | |
630 | strcpy (buf, " "); |
603 | strcpy (buf, " "); |
|
|
604 | |
631 | for (x = 0; x < op->contr->socket.mapx; x++) |
605 | for (x = 0; x < op->contr->ns->mapx; x++) |
632 | { |
606 | { |
633 | sprintf (buf2, "%2d", x); |
607 | sprintf (buf2, "%2d", x); |
634 | strcat (buf, buf2); |
608 | strcat (buf, buf2); |
635 | } |
609 | } |
|
|
610 | |
636 | new_draw_info (NDI_UNIQUE, 0, op, buf); |
611 | new_draw_info (NDI_UNIQUE, 0, op, buf); |
|
|
612 | |
637 | for (y = 0; y < op->contr->socket.mapy; y++) |
613 | for (y = 0; y < op->contr->ns->mapy; y++) |
638 | { |
614 | { |
639 | sprintf (buf, "%2d:", y); |
615 | sprintf (buf, "%2d:", y); |
|
|
616 | |
640 | for (x = 0; x < op->contr->socket.mapx; x++) |
617 | for (x = 0; x < op->contr->ns->mapx; x++) |
641 | { |
618 | { |
642 | sprintf (buf2, " %1d", op->contr->blocked_los[x][y]); |
619 | sprintf (buf2, " %1d", op->contr->blocked_los[x][y]); |
643 | strcat (buf, buf2); |
620 | strcat (buf, buf2); |
644 | } |
621 | } |
|
|
622 | |
645 | new_draw_info (NDI_UNIQUE, 0, op, buf); |
623 | new_draw_info (NDI_UNIQUE, 0, op, buf); |
646 | } |
624 | } |
647 | } |
625 | } |
648 | |
626 | |
649 | /* |
627 | /* |
… | |
… | |
652 | */ |
630 | */ |
653 | |
631 | |
654 | void |
632 | void |
655 | make_sure_seen (const object *op) |
633 | make_sure_seen (const object *op) |
656 | { |
634 | { |
657 | player *pl; |
635 | for_all_players (pl) |
658 | |
|
|
659 | for (pl = first_player; pl; pl = pl->next) |
|
|
660 | if (pl->ob->map == op->map && |
636 | if (pl->ob->map == op->map && |
661 | pl->ob->y - pl->socket.mapy / 2 <= op->y && |
637 | pl->ob->y - pl->ns->mapy / 2 <= op->y && |
662 | pl->ob->y + pl->socket.mapy / 2 >= op->y && pl->ob->x - pl->socket.mapx / 2 <= op->x && pl->ob->x + pl->socket.mapx / 2 >= op->x) |
638 | pl->ob->y + pl->ns->mapy / 2 >= op->y && pl->ob->x - pl->ns->mapx / 2 <= op->x && pl->ob->x + pl->ns->mapx / 2 >= op->x) |
663 | pl->blocked_los[pl->socket.mapx / 2 + op->x - pl->ob->x][pl->socket.mapy / 2 + op->y - pl->ob->y] = 0; |
639 | pl->blocked_los[pl->ns->mapx / 2 + op->x - pl->ob->x][pl->ns->mapy / 2 + op->y - pl->ob->y] = 0; |
664 | } |
640 | } |
665 | |
641 | |
666 | /* |
642 | /* |
667 | * make_sure_not_seen: The object which is supposed to be visible through |
643 | * make_sure_not_seen: The object which is supposed to be visible through |
668 | * walls has just been removed from the map, so update the los of any |
644 | * walls has just been removed from the map, so update the los of any |
… | |
… | |
670 | */ |
646 | */ |
671 | |
647 | |
672 | void |
648 | void |
673 | make_sure_not_seen (const object *op) |
649 | make_sure_not_seen (const object *op) |
674 | { |
650 | { |
675 | player *pl; |
651 | for_all_players (pl) |
676 | |
|
|
677 | for (pl = first_player; pl; pl = pl->next) |
|
|
678 | if (pl->ob->map == op->map && |
652 | if (pl->ob->map == op->map && |
679 | pl->ob->y - pl->socket.mapy / 2 <= op->y && |
653 | pl->ob->y - pl->ns->mapy / 2 <= op->y && |
680 | pl->ob->y + pl->socket.mapy / 2 >= op->y && pl->ob->x - pl->socket.mapx / 2 <= op->x && pl->ob->x + pl->socket.mapx / 2 >= op->x) |
654 | pl->ob->y + pl->ns->mapy / 2 >= op->y && pl->ob->x - pl->ns->mapx / 2 <= op->x && pl->ob->x + pl->ns->mapx / 2 >= op->x) |
681 | pl->do_los = 1; |
655 | pl->do_los = 1; |
682 | } |
656 | } |