server/common/anim.C

/*
 * CrossFire, A Multiplayer game for X-windows
 * 
 * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
 * 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>

animhash_t animhash;
std::vector<animation> animations;

void
animation::resize (int new_size)
{
  sfree <faceidx> (faces, num_animations);
  num_animations = new_size;
  faces = salloc<faceidx> (num_animations);
}

animation &
animation::create (const char *name, uint8 frames, uint8 facings)
{
  if (animations.size () == MAXANIMNUM)
    cleanup ("trying to create new animation, but MAXANIMNUM animations in use.");

  animations.push_back (animation ());
  animation &anim = animations.back ();

  anim.number         = animations.size () - 1;
  anim.name           = name;
  anim.num_animations = frames;
  anim.facings        = facings;
  anim.faces          = salloc<faceidx> (frames);

  animhash.insert (std::make_pair (anim.name, anim.number));

  return anim;
}

animation &
animation::find (const char *name)
{
  if (!name)
    return animations [0];

  animhash_t::iterator i = animhash.find (name);
  return animations [i == animhash.end () ? 0 : i->second];
}

void
init_anim (void)
{
  animation &anim0 = animation::create ("none", 1, 0);
  anim0.faces [0] = 0;
}

/* Tries to find the animation id that matches name.  Returns an integer match 
 * 0 if no match found (animation 0 is initialised as the 'bug' face
 */
//TODO: nuke this function and replace all occurences by animations::find
int
find_animation (const char *name)
{
  return animation::find (name).number;
}

/*
 * 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 ());
      CLEAR_FLAG (op, FLAG_ANIMATE);
      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 animations 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 && op->arch->clone.flag [FLAG_ALIVE])
    {
      if (op->face == 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:	1.23
Committed:	Fri Apr 13 07:26:29 2007 UTC (17 years, 1 month ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.22:	+3 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	elmex	1.1	/*
2	pippijn	1.17	* CrossFire, A Multiplayer game for X-windows
3			*
4			* Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
5			* Copyright (C) 2002-2003 Mark Wedel & Crossfire Development Team
6			* Copyright (C) 1992 Frank Tore Johansen
7			*
8			* This program is free software; you can redistribute it and/or modify
9			* it under the terms of the GNU General Public License as published by
10			* the Free Software Foundation; either version 2 of the License, or
11			* (at your option) any later version.
12			*
13			* This program is distributed in the hope that it will be useful,
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16			* GNU General Public License for more details.
17			*
18			* You should have received a copy of the GNU General Public License
19			* along with this program; if not, write to the Free Software
20			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21			*
22			* The authors can be reached via e-mail at <crossfire@schmorp.de>
23			*/
24	elmex	1.1
25			/* This file contains animation related code. */
26
27			#include <global.h>
28			#include <stdio.h>
29
30	root	1.22	animhash_t animhash;
31			std::vector<animation> animations;
32
33	root	1.7	void
34	root	1.22	animation::resize (int new_size)
35	root	1.4	{
36	root	1.22	sfree <faceidx> (faces, num_animations);
37			num_animations = new_size;
38			faces = salloc<faceidx> (num_animations);
39	elmex	1.1	}
40
41	root	1.22	animation &
42			animation::create (const char *name, uint8 frames, uint8 facings)
43	root	1.7	{
44	root	1.23	if (animations.size () == MAXANIMNUM)
45			cleanup ("trying to create new animation, but MAXANIMNUM animations in use.");
46
47	root	1.22	animations.push_back (animation ());
48			animation &anim = animations.back ();
49	root	1.7
50	root	1.22	anim.number = animations.size () - 1;
51			anim.name = name;
52			anim.num_animations = frames;
53			anim.facings = facings;
54			anim.faces = salloc<faceidx> (frames);
55	root	1.7
56	root	1.22	animhash.insert (std::make_pair (anim.name, anim.number));
57	root	1.7
58	root	1.22	return anim;
59			}
60	root	1.20
61	root	1.22	animation &
62			animation::find (const char *name)
63			{
64			if (!name)
65			return animations [0];
66	root	1.20
67	root	1.22	animhash_t::iterator i = animhash.find (name);
68			return animations [i == animhash.end () ? 0 : i->second];
69	elmex	1.1	}
70
71	root	1.22	void
72			init_anim (void)
73	root	1.7	{
74	root	1.22	animation &anim0 = animation::create ("none", 1, 0);
75			anim0.faces [0] = 0;
76	elmex	1.1	}
77
78			/* Tries to find the animation id that matches name. Returns an integer match
79	pippijn	1.14	* 0 if no match found (animation 0 is initialised as the 'bug' face
80	elmex	1.1	*/
81	root	1.22	//TODO: nuke this function and replace all occurences by animations::find
82	root	1.7	int
83			find_animation (const char *name)
84	elmex	1.1	{
85	root	1.22	return animation::find (name).number;
86	elmex	1.1	}
87
88			/*
89			* animate_object(object) updates the face-variable of an object.
90			* If the object is the head of a multi-object, all objects are animated.
91			* op is the object to animate.
92			* dir is the direction the object is facing. This is generally same as
93			* op->direction, but in some cases, op->facing is used instead - the
94			* caller has a better idea which one it really wants to be using,
95			* so let it pass along the right one.
96			*/
97	root	1.7	void
98			animate_object (object *op, int dir)
99			{
100	root	1.12	int max_state; /* Max animation state object should be drawn in */
101			int base_state; /* starting index # to draw from */
102	root	1.7
103			if (!op->animation_id \|\| !NUM_ANIMATIONS (op))
104			{
105	root	1.9	LOG (llevError, "Object %s lacks animation.\n", op->debug_desc ());
106	root	1.16	CLEAR_FLAG (op, FLAG_ANIMATE);
107	root	1.7	return;
108			}
109	root	1.9
110	root	1.7	if (op->head)
111			{
112			dir = op->head->direction;
113
114			if (NUM_ANIMATIONS (op) == NUM_ANIMATIONS (op->head))
115			op->state = op->head->state;
116			else
117			++op->state;
118			}
119			else
120	root	1.9	++op->state; /* increase draw state */
121	root	1.7
122			/* If object is turning, then max animation state is half through the
123			* animations. Otherwise, we can use all the animations.
124			*/
125			max_state = NUM_ANIMATIONS (op) / NUM_FACINGS (op);
126			base_state = 0;
127	root	1.20	/* at least in the older animations that used is_turning, the first half
128	root	1.7	* of the animations were left facing, the second half right facing.
129			* Note in old the is_turning, it was set so that the animation for a monster
130			* was always towards the enemy - now it is whatever direction the monster
131			* is facing.
132			*/
133	root	1.9
134	root	1.7	if (NUM_FACINGS (op) == 2)
135			{
136			if (dir < 5)
137			base_state = 0;
138			else
139			base_state = NUM_ANIMATIONS (op) / 2;
140			}
141			else if (NUM_FACINGS (op) == 4)
142			{
143			if (dir == 0)
144			base_state = 0;
145			else
146			base_state = ((dir - 1) / 2) * (NUM_ANIMATIONS (op) / 4);
147			}
148			else if (NUM_FACINGS (op) == 8)
149			{
150			if (dir == 0)
151			base_state = 0;
152			else
153			base_state = (dir - 1) * (NUM_ANIMATIONS (op) / 8);
154			}
155
156			/* If beyond drawable states, reset */
157			if (op->state >= max_state)
158			op->state = 0;
159
160			SET_ANIMATION (op, op->state + base_state);
161
162			if (op->face == blank_face)
163			op->invisible = 1;
164	root	1.21
165	root	1.7	/* This block covers monsters (eg, pixies) which are supposed to
166			* cycle from visible to invisible and back to being visible.
167			* as such, disable it for players, as then players would become
168			* visible.
169			*/
170	root	1.20	else if (op->type != PLAYER && op->arch->clone.flag [FLAG_ALIVE])
171	root	1.7	{
172	root	1.21	if (op->face == 0)
173	root	1.7	{
174			op->invisible = 1;
175			CLEAR_FLAG (op, FLAG_ALIVE);
176			}
177			else
178			{
179			op->invisible = 0;
180			SET_FLAG (op, FLAG_ALIVE);
181			}
182			}
183
184			if (op->more)
185			animate_object (op->more, dir);
186
187			/* update_object will also recursively update all the pieces.
188			* as such, we call it last, and only call it for the head
189			* piece, and not for the other tail pieces.
190			*/
191			if (!op->head)
192			update_object (op, UP_OBJ_FACE);
193	elmex	1.1	}
194	root	1.22