server/common/anim.C


/*
 * static char *rcsid_anim_c =
 *   "$Id: anim.C,v 1.6 2006-09-03 08:05:39 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 lacks animation.\n");
      dump_object (op);
      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:	1.7
Committed:	Sun Sep 10 16:00:23 2006 UTC (17 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.6:	+208 -161 lines
Log Message:	indent
#	Content
1
2	/*
3	* static char *rcsid_anim_c =
4	* "$Id: anim.C,v 1.6 2006-09-03 08:05:39 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
74	anim0;
75
76	anim0.name = "###none";
77	anim0.num_animations = 1;
78	anim0.faces = (Fontindex *) malloc (sizeof (Fontindex));
79	anim0.faces[0] = 0;
80	anim0.facings = 0;
81
82	animations.push_back (anim0);
83	}
84
85	sprintf (buf, "%s/animations", settings.datadir);
86	LOG (llevDebug, "Reading animations from %s...", buf);
87	if ((fp = fopen (buf, "r")) == NULL)
88	{
89	LOG (llevError, "Cannot open animations file %s: %s\n", buf, strerror (errno));
90	exit (-1);
91	}
92	while (fgets (buf, MAX_BUF - 1, fp) != NULL)
93	{
94	if (*buf == '#')
95	continue;
96	/* Kill the newline */
97	buf[strlen (buf) - 1] = '\0';
98	if (!strncmp (buf, "anim ", 5))
99	{
100	if (num_frames)
101	{
102	LOG (llevError, "Didn't get a mina before %s\n", buf);
103	num_frames = 0;
104	}
105	num_animations++;
106
107	Animations
108	anim;
109
110	anim.name = buf + 5;
111	anim.num = num_animations; /* for bsearch */
112	anim.facings = 1;
113	animations.push_back (anim);
114	}
115	else if (!strncmp (buf, "mina", 4))
116	{
117	animations[num_animations].faces = (Fontindex ) malloc (sizeof (Fontindex) num_frames);
118	for (i = 0; i < num_frames; i++)
119	animations[num_animations].faces[i] = faces[i];
120	animations[num_animations].num_animations = num_frames;
121	if (num_frames % animations[num_animations].facings)
122	{
123	LOG (llevDebug, "Animation %s frame numbers (%d) is not a multiple of facings (%d)\n",
124	&animations[num_animations].name, num_frames, animations[num_animations].facings);
125	}
126	num_frames = 0;
127	}
128	else if (!strncmp (buf, "facings", 7))
129	{
130	if (!(animations[num_animations].facings = atoi (buf + 7)))
131	{
132	LOG (llevDebug, "Animation %s has 0 facings, line=%s\n", &animations[num_animations].name, buf);
133	animations[num_animations].facings = 1;
134	}
135
136	}
137	else
138	{
139	if (!(faces[num_frames++] = FindFace (buf, 0)))
140	LOG (llevDebug, "Could not find face %s for animation %s\n", buf, &animations[num_animations].name);
141	}
142	}
143	fclose (fp);
144	LOG (llevDebug, "done. got (%d)\n", num_animations);
145	}
146
147	static int
148	anim_compare (const Animations * a, const Animations * b)
149	{
150	return strcmp (a->name, b->name);
151	}
152
153	/* Tries to find the animation id that matches name. Returns an integer match
154	* 0 if no match found (animation 0 is initialized as the 'bug' face
155	*/
156	int
157	find_animation (const char *name)
158	{
159	Animations
160	search, *
161	match;
162
163	search.name = name;
164
165	match = (Animations *) bsearch (&search, &animations[0], (num_animations + 1),
166	sizeof (Animations), (int ()(const void , const void *)) anim_compare);
167
168
169	if (match)
170	return match->num;
171	LOG (llevError, "Unable to find animation %s\n", name);
172	return 0;
173	}
174
175	/*
176	* animate_object(object) updates the face-variable of an object.
177	* If the object is the head of a multi-object, all objects are animated.
178	* op is the object to animate.
179	* dir is the direction the object is facing. This is generally same as
180	* op->direction, but in some cases, op->facing is used instead - the
181	* caller has a better idea which one it really wants to be using,
182	* so let it pass along the right one.
183	*/
184
185	void
186	animate_object (object *op, int dir)
187	{
188	int
189	max_state; /* Max animation state object should be drawn in */
190	int
191	base_state; /* starting index # to draw from */
192
193	if (!op->animation_id \|\| !NUM_ANIMATIONS (op))
194	{
195	LOG (llevError, "Object lacks animation.\n");
196	dump_object (op);
197	return;
198	}
199	if (op->head)
200	{
201	dir = op->head->direction;
202
203	if (NUM_ANIMATIONS (op) == NUM_ANIMATIONS (op->head))
204	op->state = op->head->state;
205	else
206	++op->state;
207	}
208	else
209	{
210	++op->state; /* increase draw state */
211	}
212
213	/* If object is turning, then max animation state is half through the
214	* animations. Otherwise, we can use all the animations.
215	*/
216	max_state = NUM_ANIMATIONS (op) / NUM_FACINGS (op);
217	base_state = 0;
218	/* at least in the older aniamtions that used is_turning, the first half
219	* of the animations were left facing, the second half right facing.
220	* Note in old the is_turning, it was set so that the animation for a monster
221	* was always towards the enemy - now it is whatever direction the monster
222	* is facing.
223	*/
224	if (NUM_FACINGS (op) == 2)
225	{
226	if (dir < 5)
227	base_state = 0;
228	else
229	base_state = NUM_ANIMATIONS (op) / 2;
230	}
231	else if (NUM_FACINGS (op) == 4)
232	{
233	if (dir == 0)
234	base_state = 0;
235	else
236	base_state = ((dir - 1) / 2) * (NUM_ANIMATIONS (op) / 4);
237	}
238	else if (NUM_FACINGS (op) == 8)
239	{
240	if (dir == 0)
241	base_state = 0;
242	else
243	base_state = (dir - 1) * (NUM_ANIMATIONS (op) / 8);
244	}
245
246	/* If beyond drawable states, reset */
247	if (op->state >= max_state)
248	op->state = 0;
249
250	SET_ANIMATION (op, op->state + base_state);
251
252	if (op->face == blank_face)
253	op->invisible = 1;
254
255	/* This block covers monsters (eg, pixies) which are supposed to
256	* cycle from visible to invisible and back to being visible.
257	* as such, disable it for players, as then players would become
258	* visible.
259	*/
260	else if (op->type != PLAYER && QUERY_FLAG ((&op->arch->clone), FLAG_ALIVE))
261	{
262	if (op->face->number == 0)
263	{
264	op->invisible = 1;
265	CLEAR_FLAG (op, FLAG_ALIVE);
266	}
267	else
268	{
269	op->invisible = 0;
270	SET_FLAG (op, FLAG_ALIVE);
271	}
272	}
273
274	if (op->more)
275	animate_object (op->more, dir);
276
277	/* update_object will also recursively update all the pieces.
278	* as such, we call it last, and only call it for the head
279	* piece, and not for the other tail pieces.
280	*/
281	if (!op->head)
282	update_object (op, UP_OBJ_FACE);
283	}