server/common/anim.C

/*
    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@schmorp.de>
*/

/* 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:	1.10
Committed:	Thu Sep 14 22:33:58 2006 UTC (17 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.9:	+2 -8 lines
Log Message:	indent
#	User	Rev	Content
1	elmex	1.1	/*
2			CrossFire, A Multiplayer game for X-windows
3
4			Copyright (C) 2002-2003 Mark Wedel & Crossfire Development Team
5			Copyright (C) 1992 Frank Tore Johansen
6
7			This program is free software; you can redistribute it and/or modify
8			it under the terms of the GNU General Public License as published by
9			the Free Software Foundation; either version 2 of the License, or
10			(at your option) any later version.
11
12			This program is distributed in the hope that it will be useful,
13			but WITHOUT ANY WARRANTY; without even the implied warranty of
14			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			GNU General Public License for more details.
16
17			You should have received a copy of the GNU General Public License
18			along with this program; if not, write to the Free Software
19			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20
21	root	1.10	The authors can be reached via e-mail at <crossfire@schmorp.de>
22	elmex	1.1	*/
23
24			/* This file contains animation related code. */
25
26			#include <global.h>
27			#include <stdio.h>
28
29	root	1.10	std::vector<Animations> animations;
30	elmex	1.1
31	root	1.7	void
32			free_all_anim (void)
33	root	1.4	{
34	root	1.7	for (int i = 0; i <= num_animations; i++)
35	root	1.4	{
36			animations[i].name = 0;
37			free (animations[i].faces);
38	elmex	1.1	}
39	root	1.4
40			animations.clear ();
41	elmex	1.1	}
42
43	root	1.7	void
44			init_anim (void)
45			{
46			char
47			buf[MAX_BUF];
48			FILE *
49			fp;
50			static int
51			anim_init = 0;
52			int
53			num_frames = 0, faces[MAX_ANIMATIONS], i;
54
55			if (anim_init)
56			return;
57			num_animations = 0;
58			/* Make a default. New animations start at one, so if something
59			* thinks it is animated but hasn't set the animation_id properly,
60			* it will have a default value that should be pretty obvious.
61			*/
62			/* set the name so we don't try to dereferance null.
63			* Put # at start so it will be first in alphabetical
64			* order.
65			*/
66			{
67	root	1.8	Animations anim0;
68	root	1.7
69			anim0.name = "###none";
70			anim0.num_animations = 1;
71			anim0.faces = (Fontindex *) malloc (sizeof (Fontindex));
72			anim0.faces[0] = 0;
73			anim0.facings = 0;
74
75			animations.push_back (anim0);
76			}
77
78			sprintf (buf, "%s/animations", settings.datadir);
79			LOG (llevDebug, "Reading animations from %s...", buf);
80			if ((fp = fopen (buf, "r")) == NULL)
81			{
82			LOG (llevError, "Cannot open animations file %s: %s\n", buf, strerror (errno));
83			exit (-1);
84			}
85			while (fgets (buf, MAX_BUF - 1, fp) != NULL)
86			{
87			if (*buf == '#')
88			continue;
89			/* Kill the newline */
90			buf[strlen (buf) - 1] = '\0';
91			if (!strncmp (buf, "anim ", 5))
92			{
93			if (num_frames)
94			{
95			LOG (llevError, "Didn't get a mina before %s\n", buf);
96			num_frames = 0;
97	root	1.2	}
98	root	1.7	num_animations++;
99
100	root	1.8	Animations anim;
101	root	1.4
102	root	1.7	anim.name = buf + 5;
103			anim.num = num_animations; /* for bsearch */
104			anim.facings = 1;
105			animations.push_back (anim);
106			}
107			else if (!strncmp (buf, "mina", 4))
108			{
109			animations[num_animations].faces = (Fontindex ) malloc (sizeof (Fontindex) num_frames);
110			for (i = 0; i < num_frames; i++)
111			animations[num_animations].faces[i] = faces[i];
112			animations[num_animations].num_animations = num_frames;
113			if (num_frames % animations[num_animations].facings)
114			{
115			LOG (llevDebug, "Animation %s frame numbers (%d) is not a multiple of facings (%d)\n",
116			&animations[num_animations].name, num_frames, animations[num_animations].facings);
117	root	1.2	}
118	root	1.7	num_frames = 0;
119	root	1.2	}
120	root	1.7	else if (!strncmp (buf, "facings", 7))
121			{
122			if (!(animations[num_animations].facings = atoi (buf + 7)))
123			{
124			LOG (llevDebug, "Animation %s has 0 facings, line=%s\n", &animations[num_animations].name, buf);
125			animations[num_animations].facings = 1;
126	root	1.2	}
127
128	root	1.7	}
129			else
130			{
131			if (!(faces[num_frames++] = FindFace (buf, 0)))
132			LOG (llevDebug, "Could not find face %s for animation %s\n", buf, &animations[num_animations].name);
133	root	1.2	}
134	elmex	1.1	}
135	root	1.7	fclose (fp);
136			LOG (llevDebug, "done. got (%d)\n", num_animations);
137	elmex	1.1	}
138
139	root	1.7	static int
140			anim_compare (const Animations * a, const Animations * b)
141			{
142			return strcmp (a->name, b->name);
143	elmex	1.1	}
144
145			/* Tries to find the animation id that matches name. Returns an integer match
146			* 0 if no match found (animation 0 is initialized as the 'bug' face
147			*/
148	root	1.7	int
149			find_animation (const char *name)
150	elmex	1.1	{
151	root	1.7	Animations
152			search, *
153			match;
154	elmex	1.1
155	root	1.7	search.name = name;
156	elmex	1.1
157	root	1.7	match = (Animations *) bsearch (&search, &animations[0], (num_animations + 1),
158			sizeof (Animations), (int ()(const void , const void *)) anim_compare);
159	elmex	1.1
160
161	root	1.7	if (match)
162			return match->num;
163			LOG (llevError, "Unable to find animation %s\n", name);
164			return 0;
165	elmex	1.1	}
166
167			/*
168			* animate_object(object) updates the face-variable of an object.
169			* If the object is the head of a multi-object, all objects are animated.
170			* op is the object to animate.
171			* dir is the direction the object is facing. This is generally same as
172			* op->direction, but in some cases, op->facing is used instead - the
173			* caller has a better idea which one it really wants to be using,
174			* so let it pass along the right one.
175			*/
176
177	root	1.7	void
178			animate_object (object *op, int dir)
179			{
180			int
181			max_state; /* Max animation state object should be drawn in */
182			int
183			base_state; /* starting index # to draw from */
184
185			if (!op->animation_id \|\| !NUM_ANIMATIONS (op))
186			{
187	root	1.9	LOG (llevError, "Object %s lacks animation.\n", op->debug_desc ());
188	root	1.7	return;
189			}
190	root	1.9
191	root	1.7	if (op->head)
192			{
193			dir = op->head->direction;
194
195			if (NUM_ANIMATIONS (op) == NUM_ANIMATIONS (op->head))
196			op->state = op->head->state;
197			else
198			++op->state;
199			}
200			else
201	root	1.9	++op->state; /* increase draw state */
202	root	1.7
203			/* If object is turning, then max animation state is half through the
204			* animations. Otherwise, we can use all the animations.
205			*/
206			max_state = NUM_ANIMATIONS (op) / NUM_FACINGS (op);
207			base_state = 0;
208			/* at least in the older aniamtions that used is_turning, the first half
209			* of the animations were left facing, the second half right facing.
210			* Note in old the is_turning, it was set so that the animation for a monster
211			* was always towards the enemy - now it is whatever direction the monster
212			* is facing.
213			*/
214	root	1.9
215	root	1.7	if (NUM_FACINGS (op) == 2)
216			{
217			if (dir < 5)
218			base_state = 0;
219			else
220			base_state = NUM_ANIMATIONS (op) / 2;
221			}
222			else if (NUM_FACINGS (op) == 4)
223			{
224			if (dir == 0)
225			base_state = 0;
226			else
227			base_state = ((dir - 1) / 2) * (NUM_ANIMATIONS (op) / 4);
228			}
229			else if (NUM_FACINGS (op) == 8)
230			{
231			if (dir == 0)
232			base_state = 0;
233			else
234			base_state = (dir - 1) * (NUM_ANIMATIONS (op) / 8);
235			}
236
237			/* If beyond drawable states, reset */
238			if (op->state >= max_state)
239			op->state = 0;
240
241			SET_ANIMATION (op, op->state + base_state);
242
243			if (op->face == blank_face)
244			op->invisible = 1;
245
246			/* This block covers monsters (eg, pixies) which are supposed to
247			* cycle from visible to invisible and back to being visible.
248			* as such, disable it for players, as then players would become
249			* visible.
250			*/
251			else if (op->type != PLAYER && QUERY_FLAG ((&op->arch->clone), FLAG_ALIVE))
252			{
253			if (op->face->number == 0)
254			{
255			op->invisible = 1;
256			CLEAR_FLAG (op, FLAG_ALIVE);
257			}
258			else
259			{
260			op->invisible = 0;
261			SET_FLAG (op, FLAG_ALIVE);
262			}
263			}
264
265			if (op->more)
266			animate_object (op->more, dir);
267
268			/* update_object will also recursively update all the pieces.
269			* as such, we call it last, and only call it for the head
270			* piece, and not for the other tail pieces.
271			*/
272			if (!op->head)
273			update_object (op, UP_OBJ_FACE);
274	elmex	1.1	}