server/common/anim.C


/*
 * static char *rcsid_anim_c =
 *   "$Id: anim.C,v 1.8 2006-09-11 20:28:37 root Exp $";
 */

/*
    CrossFire, A Multiplayer game for X-windows

    Copyright (C) 2002-2003 Mark Wedel & Crossfire Development Team
    Copyright (C) 1992 Frank Tore Johansen

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    The authors can be reached via e-mail at crossfire-devel@real-time.com
*/

/* This file contains animation related code. */

#include <global.h>
#include <stdio.h>

std::vector < Animations > animations;

void
free_all_anim (void)
{
  for (int i = 0; i <= num_animations; i++)
    {
      animations[i].name = 0;
      free (animations[i].faces);
    }

  animations.clear ();
}

void
init_anim (void)
{
  char
    buf[MAX_BUF];
  FILE *
    fp;
  static int
    anim_init = 0;
  int
    num_frames = 0, faces[MAX_ANIMATIONS], i;

  if (anim_init)
    return;
  num_animations = 0;
  /* Make a default.  New animations start at one, so if something
   * thinks it is animated but hasn't set the animation_id properly,
   * it will have a default value that should be pretty obvious.
   */
  /* set the name so we don't try to dereferance null.
   * Put # at start so it will be first in alphabetical
   * order.
   */
  {
    Animations anim0;

    anim0.name = "###none";
    anim0.num_animations = 1;
    anim0.faces = (Fontindex *) malloc (sizeof (Fontindex));
    anim0.faces[0] = 0;
    anim0.facings = 0;

    animations.push_back (anim0);
  }

  sprintf (buf, "%s/animations", settings.datadir);
  LOG (llevDebug, "Reading animations from %s...", buf);
  if ((fp = fopen (buf, "r")) == NULL)
    {
      LOG (llevError, "Cannot open animations file %s: %s\n", buf, strerror (errno));
      exit (-1);
    }
  while (fgets (buf, MAX_BUF - 1, fp) != NULL)
    {
      if (*buf == '#')
        continue;
      /* Kill the newline */
      buf[strlen (buf) - 1] = '\0';
      if (!strncmp (buf, "anim ", 5))
        {
          if (num_frames)
            {
              LOG (llevError, "Didn't get a mina before %s\n", buf);
              num_frames = 0;
            }
          num_animations++;

          Animations anim;

          anim.name = buf + 5;
          anim.num = num_animations;    /* for bsearch */
          anim.facings = 1;
          animations.push_back (anim);
        }
      else if (!strncmp (buf, "mina", 4))
        {
          animations[num_animations].faces = (Fontindex *) malloc (sizeof (Fontindex) * num_frames);
          for (i = 0; i < num_frames; i++)
            animations[num_animations].faces[i] = faces[i];
          animations[num_animations].num_animations = num_frames;
          if (num_frames % animations[num_animations].facings)
            {
              LOG (llevDebug, "Animation %s frame numbers (%d) is not a multiple of facings (%d)\n",
                   &animations[num_animations].name, num_frames, animations[num_animations].facings);
            }
          num_frames = 0;
        }
      else if (!strncmp (buf, "facings", 7))
        {
          if (!(animations[num_animations].facings = atoi (buf + 7)))
            {
              LOG (llevDebug, "Animation %s has 0 facings, line=%s\n", &animations[num_animations].name, buf);
              animations[num_animations].facings = 1;
            }

        }
      else
        {
          if (!(faces[num_frames++] = FindFace (buf, 0)))
            LOG (llevDebug, "Could not find face %s for animation %s\n", buf, &animations[num_animations].name);
        }
    }
  fclose (fp);
  LOG (llevDebug, "done. got (%d)\n", num_animations);
}

static int
anim_compare (const Animations * a, const Animations * b)
{
  return strcmp (a->name, b->name);
}

/* Tries to find the animation id that matches name.  Returns an integer match 
 * 0 if no match found (animation 0 is initialized as the 'bug' face
 */
int
find_animation (const char *name)
{
  Animations
  search, *
    match;

  search.name = name;

  match = (Animations *) bsearch (&search, &animations[0], (num_animations + 1),
                                  sizeof (Animations), (int (*)(const void *, const void *)) anim_compare);


  if (match)
    return match->num;
  LOG (llevError, "Unable to find animation %s\n", name);
  return 0;
}

/*
 * animate_object(object) updates the face-variable of an object.
 * If the object is the head of a multi-object, all objects are animated.
 * op is the object to animate.
 * dir is the direction the object is facing.  This is generally same as
 *    op->direction, but in some cases, op->facing is used instead - the
 *    caller has a better idea which one it really wants to be using,
 *    so let it pass along the right one.
 */

void
animate_object (object *op, int dir)
{
  int
    max_state;                  /* Max animation state object should be drawn in */
  int
    base_state;                 /* starting index # to draw from */

  if (!op->animation_id || !NUM_ANIMATIONS (op))
    {
      LOG (llevError, "Object %s lacks animation.\n", op->debug_desc ());
      return;
    }

  if (op->head)
    {
      dir = op->head->direction;

      if (NUM_ANIMATIONS (op) == NUM_ANIMATIONS (op->head))
        op->state = op->head->state;
      else
        ++op->state;
    }
  else
    ++op->state;              /* increase draw state */

  /* If object is turning, then max animation state is half through the
   * animations.  Otherwise, we can use all the animations.
   */
  max_state = NUM_ANIMATIONS (op) / NUM_FACINGS (op);
  base_state = 0;
  /* at least in the older aniamtions that used is_turning, the first half
   * of the animations were left facing, the second half right facing.
   * Note in old the is_turning, it was set so that the animation for a monster
   * was always towards the enemy - now it is whatever direction the monster
   * is facing.
   */

  if (NUM_FACINGS (op) == 2)
    {
      if (dir < 5)
        base_state = 0;
      else
        base_state = NUM_ANIMATIONS (op) / 2;
    }
  else if (NUM_FACINGS (op) == 4)
    {
      if (dir == 0)
        base_state = 0;
      else
        base_state = ((dir - 1) / 2) * (NUM_ANIMATIONS (op) / 4);
    }
  else if (NUM_FACINGS (op) == 8)
    {
      if (dir == 0)
        base_state = 0;
      else
        base_state = (dir - 1) * (NUM_ANIMATIONS (op) / 8);
    }

  /* If beyond drawable states, reset */
  if (op->state >= max_state)
    op->state = 0;

  SET_ANIMATION (op, op->state + base_state);

  if (op->face == blank_face)
    op->invisible = 1;

  /* This block covers monsters (eg, pixies) which are supposed to
   * cycle from visible to invisible and back to being visible.
   * as such, disable it for players, as then players would become
   * visible.
   */
  else if (op->type != PLAYER && QUERY_FLAG ((&op->arch->clone), FLAG_ALIVE))
    {
      if (op->face->number == 0)
        {
          op->invisible = 1;
          CLEAR_FLAG (op, FLAG_ALIVE);
        }
      else
        {
          op->invisible = 0;
          SET_FLAG (op, FLAG_ALIVE);
        }
    }

  if (op->more)
    animate_object (op->more, dir);

  /* update_object will also recursively update all the pieces.
   * as such, we call it last, and only call it for the head
   * piece, and not for the other tail pieces.
   */
  if (!op->head)
    update_object (op, UP_OBJ_FACE);
}
Revision:	1.9
Committed:	Tue Sep 12 19:20:05 2006 UTC (17 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.8:	+5 -6 lines
Log Message:	- improve assign to prepend "..." - make more use of assign - implement op->debug_desc() and make some more use of it
#	Content
1
2	/*
3	* static char *rcsid_anim_c =
4	* "$Id: anim.C,v 1.8 2006-09-11 20:28:37 root Exp $";
5	*/
6
7	/*
8	CrossFire, A Multiplayer game for X-windows
9
10	Copyright (C) 2002-2003 Mark Wedel & Crossfire Development Team
11	Copyright (C) 1992 Frank Tore Johansen
12
13	This program is free software; you can redistribute it and/or modify
14	it under the terms of the GNU General Public License as published by
15	the Free Software Foundation; either version 2 of the License, or
16	(at your option) any later version.
17
18	This program is distributed in the hope that it will be useful,
19	but WITHOUT ANY WARRANTY; without even the implied warranty of
20	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21	GNU General Public License for more details.
22
23	You should have received a copy of the GNU General Public License
24	along with this program; if not, write to the Free Software
25	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26
27	The authors can be reached via e-mail at crossfire-devel@real-time.com
28	*/
29
30	/* This file contains animation related code. */
31
32	#include <global.h>
33	#include <stdio.h>
34
35	std::vector < Animations > animations;
36
37	void
38	free_all_anim (void)
39	{
40	for (int i = 0; i <= num_animations; i++)
41	{
42	animations[i].name = 0;
43	free (animations[i].faces);
44	}
45
46	animations.clear ();
47	}
48
49	void
50	init_anim (void)
51	{
52	char
53	buf[MAX_BUF];
54	FILE *
55	fp;
56	static int
57	anim_init = 0;
58	int
59	num_frames = 0, faces[MAX_ANIMATIONS], i;
60
61	if (anim_init)
62	return;
63	num_animations = 0;
64	/* Make a default. New animations start at one, so if something
65	* thinks it is animated but hasn't set the animation_id properly,
66	* it will have a default value that should be pretty obvious.
67	*/
68	/* set the name so we don't try to dereferance null.
69	* Put # at start so it will be first in alphabetical
70	* order.
71	*/
72	{
73	Animations anim0;
74
75	anim0.name = "###none";
76	anim0.num_animations = 1;
77	anim0.faces = (Fontindex *) malloc (sizeof (Fontindex));
78	anim0.faces[0] = 0;
79	anim0.facings = 0;
80
81	animations.push_back (anim0);
82	}
83
84	sprintf (buf, "%s/animations", settings.datadir);
85	LOG (llevDebug, "Reading animations from %s...", buf);
86	if ((fp = fopen (buf, "r")) == NULL)
87	{
88	LOG (llevError, "Cannot open animations file %s: %s\n", buf, strerror (errno));
89	exit (-1);
90	}
91	while (fgets (buf, MAX_BUF - 1, fp) != NULL)
92	{
93	if (*buf == '#')
94	continue;
95	/* Kill the newline */
96	buf[strlen (buf) - 1] = '\0';
97	if (!strncmp (buf, "anim ", 5))
98	{
99	if (num_frames)
100	{
101	LOG (llevError, "Didn't get a mina before %s\n", buf);
102	num_frames = 0;
103	}
104	num_animations++;
105
106	Animations anim;
107
108	anim.name = buf + 5;
109	anim.num = num_animations; /* for bsearch */
110	anim.facings = 1;
111	animations.push_back (anim);
112	}
113	else if (!strncmp (buf, "mina", 4))
114	{
115	animations[num_animations].faces = (Fontindex ) malloc (sizeof (Fontindex) num_frames);
116	for (i = 0; i < num_frames; i++)
117	animations[num_animations].faces[i] = faces[i];
118	animations[num_animations].num_animations = num_frames;
119	if (num_frames % animations[num_animations].facings)
120	{
121	LOG (llevDebug, "Animation %s frame numbers (%d) is not a multiple of facings (%d)\n",
122	&animations[num_animations].name, num_frames, animations[num_animations].facings);
123	}
124	num_frames = 0;
125	}
126	else if (!strncmp (buf, "facings", 7))
127	{
128	if (!(animations[num_animations].facings = atoi (buf + 7)))
129	{
130	LOG (llevDebug, "Animation %s has 0 facings, line=%s\n", &animations[num_animations].name, buf);
131	animations[num_animations].facings = 1;
132	}
133
134	}
135	else
136	{
137	if (!(faces[num_frames++] = FindFace (buf, 0)))
138	LOG (llevDebug, "Could not find face %s for animation %s\n", buf, &animations[num_animations].name);
139	}
140	}
141	fclose (fp);
142	LOG (llevDebug, "done. got (%d)\n", num_animations);
143	}
144
145	static int
146	anim_compare (const Animations * a, const Animations * b)
147	{
148	return strcmp (a->name, b->name);
149	}
150
151	/* Tries to find the animation id that matches name. Returns an integer match
152	* 0 if no match found (animation 0 is initialized as the 'bug' face
153	*/
154	int
155	find_animation (const char *name)
156	{
157	Animations
158	search, *
159	match;
160
161	search.name = name;
162
163	match = (Animations *) bsearch (&search, &animations[0], (num_animations + 1),
164	sizeof (Animations), (int ()(const void , const void *)) anim_compare);
165
166
167	if (match)
168	return match->num;
169	LOG (llevError, "Unable to find animation %s\n", name);
170	return 0;
171	}
172
173	/*
174	* animate_object(object) updates the face-variable of an object.
175	* If the object is the head of a multi-object, all objects are animated.
176	* op is the object to animate.
177	* dir is the direction the object is facing. This is generally same as
178	* op->direction, but in some cases, op->facing is used instead - the
179	* caller has a better idea which one it really wants to be using,
180	* so let it pass along the right one.
181	*/
182
183	void
184	animate_object (object *op, int dir)
185	{
186	int
187	max_state; /* Max animation state object should be drawn in */
188	int
189	base_state; /* starting index # to draw from */
190
191	if (!op->animation_id \|\| !NUM_ANIMATIONS (op))
192	{
193	LOG (llevError, "Object %s lacks animation.\n", op->debug_desc ());
194	return;
195	}
196
197	if (op->head)
198	{
199	dir = op->head->direction;
200
201	if (NUM_ANIMATIONS (op) == NUM_ANIMATIONS (op->head))
202	op->state = op->head->state;
203	else
204	++op->state;
205	}
206	else
207	++op->state; /* increase draw state */
208
209	/* If object is turning, then max animation state is half through the
210	* animations. Otherwise, we can use all the animations.
211	*/
212	max_state = NUM_ANIMATIONS (op) / NUM_FACINGS (op);
213	base_state = 0;
214	/* at least in the older aniamtions that used is_turning, the first half
215	* of the animations were left facing, the second half right facing.
216	* Note in old the is_turning, it was set so that the animation for a monster
217	* was always towards the enemy - now it is whatever direction the monster
218	* is facing.
219	*/
220
221	if (NUM_FACINGS (op) == 2)
222	{
223	if (dir < 5)
224	base_state = 0;
225	else
226	base_state = NUM_ANIMATIONS (op) / 2;
227	}
228	else if (NUM_FACINGS (op) == 4)
229	{
230	if (dir == 0)
231	base_state = 0;
232	else
233	base_state = ((dir - 1) / 2) * (NUM_ANIMATIONS (op) / 4);
234	}
235	else if (NUM_FACINGS (op) == 8)
236	{
237	if (dir == 0)
238	base_state = 0;
239	else
240	base_state = (dir - 1) * (NUM_ANIMATIONS (op) / 8);
241	}
242
243	/* If beyond drawable states, reset */
244	if (op->state >= max_state)
245	op->state = 0;
246
247	SET_ANIMATION (op, op->state + base_state);
248
249	if (op->face == blank_face)
250	op->invisible = 1;
251
252	/* This block covers monsters (eg, pixies) which are supposed to
253	* cycle from visible to invisible and back to being visible.
254	* as such, disable it for players, as then players would become
255	* visible.
256	*/
257	else if (op->type != PLAYER && QUERY_FLAG ((&op->arch->clone), FLAG_ALIVE))
258	{
259	if (op->face->number == 0)
260	{
261	op->invisible = 1;
262	CLEAR_FLAG (op, FLAG_ALIVE);
263	}
264	else
265	{
266	op->invisible = 0;
267	SET_FLAG (op, FLAG_ALIVE);
268	}
269	}
270
271	if (op->more)
272	animate_object (op->more, dir);
273
274	/* update_object will also recursively update all the pieces.
275	* as such, we call it last, and only call it for the head
276	* piece, and not for the other tail pieces.
277	*/
278	if (!op->head)
279	update_object (op, UP_OBJ_FACE);
280	}