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/* |
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CrossFire, A Multiplayer game for X-windows |
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|
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Copyright (C) 2002-2003 Mark Wedel & Crossfire Development Team |
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Copyright (C) 1992 Frank Tore Johansen |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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|
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The authors can be reached via e-mail at <crossfire@schmorp.de> |
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*/ |
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|
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/* This file contains animation related code. */ |
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|
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#include <global.h> |
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#include <stdio.h> |
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|
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void |
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free_all_anim (void) |
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{ |
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for (int i = 0; i <= num_animations; i++) |
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{ |
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animations[i].name = 0; |
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free (animations[i].faces); |
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} |
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|
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animations.clear (); |
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} |
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|
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void |
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init_anim (void) |
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{ |
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char |
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buf[MAX_BUF]; |
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FILE * |
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fp; |
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static int |
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anim_init = 0; |
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int |
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num_frames = 0, faces[MAX_ANIMATIONS], i; |
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|
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if (anim_init) |
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return; |
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num_animations = 0; |
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/* Make a default. New animations start at one, so if something |
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* thinks it is animated but hasn't set the animation_id properly, |
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* it will have a default value that should be pretty obvious. |
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*/ |
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/* set the name so we don't try to dereferance null. |
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* Put # at start so it will be first in alphabetical |
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* order. |
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*/ |
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{ |
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Animations anim0; |
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|
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anim0.name = "###none"; |
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anim0.num_animations = 1; |
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anim0.faces = (uint16 *)malloc (sizeof (uint16)); |
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anim0.faces[0] = 0; |
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anim0.facings = 0; |
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|
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animations.push_back (anim0); |
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} |
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|
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sprintf (buf, "%s/animations", settings.datadir); |
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LOG (llevDebug, "Reading animations from %s...", buf); |
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if ((fp = fopen (buf, "r")) == NULL) |
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{ |
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LOG (llevError, "Cannot open animations file %s: %s\n", buf, strerror (errno)); |
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exit (-1); |
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} |
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while (fgets (buf, MAX_BUF - 1, fp) != NULL) |
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{ |
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if (*buf == '#') |
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continue; |
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/* Kill the newline */ |
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buf[strlen (buf) - 1] = '\0'; |
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if (!strncmp (buf, "anim ", 5)) |
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{ |
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if (num_frames) |
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{ |
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LOG (llevError, "Didn't get a mina before %s\n", buf); |
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num_frames = 0; |
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} |
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num_animations++; |
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|
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Animations anim; |
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|
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anim.name = buf + 5; |
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anim.num = num_animations; /* for bsearch */ |
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anim.facings = 1; |
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animations.push_back (anim); |
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} |
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else if (!strncmp (buf, "mina", 4)) |
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{ |
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animations[num_animations].faces = (uint16 *) malloc (sizeof (uint16) * num_frames); |
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for (i = 0; i < num_frames; i++) |
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animations[num_animations].faces[i] = faces[i]; |
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animations[num_animations].num_animations = num_frames; |
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if (num_frames % animations[num_animations].facings) |
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{ |
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LOG (llevDebug, "Animation %s frame numbers (%d) is not a multiple of facings (%d)\n", |
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&animations[num_animations].name, num_frames, animations[num_animations].facings); |
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} |
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num_frames = 0; |
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} |
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else if (!strncmp (buf, "facings", 7)) |
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{ |
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if (!(animations[num_animations].facings = atoi (buf + 7))) |
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{ |
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LOG (llevDebug, "Animation %s has 0 facings, line=%s\n", &animations[num_animations].name, buf); |
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animations[num_animations].facings = 1; |
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} |
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|
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} |
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else |
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{ |
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if (!(faces[num_frames++] = FindFace (buf, 0))) |
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LOG (llevDebug, "Could not find face %s for animation %s\n", buf, &animations[num_animations].name); |
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} |
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} |
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fclose (fp); |
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LOG (llevDebug, "done. got (%d)\n", num_animations); |
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} |
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|
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static int |
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anim_compare (const Animations * a, const Animations * b) |
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{ |
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return strcmp (a->name, b->name); |
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} |
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|
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/* Tries to find the animation id that matches name. Returns an integer match |
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* 0 if no match found (animation 0 is initialized as the 'bug' face |
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*/ |
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int |
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find_animation (const char *name) |
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{ |
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Animations |
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search, * |
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match; |
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|
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search.name = name; |
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|
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match = (Animations *) bsearch (&search, &animations[0], (num_animations + 1), |
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sizeof (Animations), (int (*)(const void *, const void *)) anim_compare); |
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|
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|
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if (match) |
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return match->num; |
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LOG (llevError, "Unable to find animation %s\n", name); |
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return 0; |
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} |
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|
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/* |
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* animate_object(object) updates the face-variable of an object. |
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* If the object is the head of a multi-object, all objects are animated. |
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* op is the object to animate. |
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* dir is the direction the object is facing. This is generally same as |
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* op->direction, but in some cases, op->facing is used instead - the |
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* caller has a better idea which one it really wants to be using, |
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* so let it pass along the right one. |
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*/ |
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|
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void |
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animate_object (object *op, int dir) |
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{ |
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int |
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max_state; /* Max animation state object should be drawn in */ |
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int |
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base_state; /* starting index # to draw from */ |
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|
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if (!op->animation_id || !NUM_ANIMATIONS (op)) |
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{ |
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LOG (llevError, "Object %s lacks animation.\n", op->debug_desc ()); |
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return; |
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} |
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|
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if (op->head) |
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{ |
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dir = op->head->direction; |
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|
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if (NUM_ANIMATIONS (op) == NUM_ANIMATIONS (op->head)) |
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op->state = op->head->state; |
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else |
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++op->state; |
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} |
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else |
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++op->state; /* increase draw state */ |
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|
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/* If object is turning, then max animation state is half through the |
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* animations. Otherwise, we can use all the animations. |
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*/ |
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max_state = NUM_ANIMATIONS (op) / NUM_FACINGS (op); |
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base_state = 0; |
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/* at least in the older aniamtions that used is_turning, the first half |
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* of the animations were left facing, the second half right facing. |
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* Note in old the is_turning, it was set so that the animation for a monster |
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* was always towards the enemy - now it is whatever direction the monster |
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* is facing. |
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*/ |
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|
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if (NUM_FACINGS (op) == 2) |
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{ |
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if (dir < 5) |
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base_state = 0; |
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else |
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base_state = NUM_ANIMATIONS (op) / 2; |
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} |
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else if (NUM_FACINGS (op) == 4) |
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{ |
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if (dir == 0) |
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base_state = 0; |
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else |
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base_state = ((dir - 1) / 2) * (NUM_ANIMATIONS (op) / 4); |
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} |
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else if (NUM_FACINGS (op) == 8) |
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{ |
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if (dir == 0) |
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base_state = 0; |
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else |
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base_state = (dir - 1) * (NUM_ANIMATIONS (op) / 8); |
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} |
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|
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/* If beyond drawable states, reset */ |
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if (op->state >= max_state) |
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op->state = 0; |
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|
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SET_ANIMATION (op, op->state + base_state); |
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|
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if (op->face == blank_face) |
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op->invisible = 1; |
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|
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/* This block covers monsters (eg, pixies) which are supposed to |
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* cycle from visible to invisible and back to being visible. |
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* as such, disable it for players, as then players would become |
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* visible. |
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*/ |
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else if (op->type != PLAYER && QUERY_FLAG ((&op->arch->clone), FLAG_ALIVE)) |
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{ |
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if (op->face->number == 0) |
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{ |
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op->invisible = 1; |
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CLEAR_FLAG (op, FLAG_ALIVE); |
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} |
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else |
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{ |
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op->invisible = 0; |
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SET_FLAG (op, FLAG_ALIVE); |
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} |
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} |
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|
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if (op->more) |
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animate_object (op->more, dir); |
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|
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/* update_object will also recursively update all the pieces. |
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* as such, we call it last, and only call it for the head |
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* piece, and not for the other tail pieces. |
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*/ |
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if (!op->head) |
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update_object (op, UP_OBJ_FACE); |
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} |
