server/common/anim.C

/*
 * static char *rcsid_anim_c =
 *   "$Id: anim.C,v 1.4 2006-09-03 00:18:39 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[0].name = "###none";
    animations[0].num_animations=1;
    animations[0].faces = (Fontindex *) malloc(sizeof(Fontindex));
    animations[0].faces[0]=0;
    animations[0].facings=0;

    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 = animations.at (num_animations);
            anim.name = buf + 5;
            anim.num = num_animations;  /* for bsearch */
            anim.facings = 1;
        }
        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:	1.5
Committed:	Sun Sep 3 07:57:54 2006 UTC (17 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.4:	+6 -6 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	elmex	1.1	/*
2			* static char *rcsid_anim_c =
3	root	1.5	* "$Id: anim.C,v 1.4 2006-09-03 00:18:39 root Exp $";
4	elmex	1.1	*/
5
6			/*
7			CrossFire, A Multiplayer game for X-windows
8
9			Copyright (C) 2002-2003 Mark Wedel & Crossfire Development Team
10			Copyright (C) 1992 Frank Tore Johansen
11
12			This program is free software; you can redistribute it and/or modify
13			it under the terms of the GNU General Public License as published by
14			the Free Software Foundation; either version 2 of the License, or
15			(at your option) any later version.
16
17			This program is distributed in the hope that it will be useful,
18			but WITHOUT ANY WARRANTY; without even the implied warranty of
19			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20			GNU General Public License for more details.
21
22			You should have received a copy of the GNU General Public License
23			along with this program; if not, write to the Free Software
24			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25
26			The authors can be reached via e-mail at crossfire-devel@real-time.com
27			*/
28
29			/* This file contains animation related code. */
30
31			#include <global.h>
32			#include <stdio.h>
33
34	root	1.4	std::vector<Animations> animations;
35	elmex	1.1
36	root	1.4	void free_all_anim(void)
37			{
38			for (int i=0; i<=num_animations; i++)
39			{
40			animations[i].name = 0;
41			free (animations[i].faces);
42	elmex	1.1	}
43	root	1.4
44			animations.clear ();
45	elmex	1.1	}
46
47			void init_anim(void) {
48			char buf[MAX_BUF];
49			FILE *fp;
50			static int anim_init=0;
51			int num_frames=0,faces[MAX_ANIMATIONS],i;
52
53			if (anim_init) return;
54			num_animations=0;
55			/* Make a default. New animations start at one, so if something
56			* thinks it is animated but hasn't set the animation_id properly,
57			* it will have a default value that should be pretty obvious.
58			*/
59			/* set the name so we don't try to dereferance null.
60			* Put # at start so it will be first in alphabetical
61			* order.
62			*/
63	root	1.4	animations[0].name = "###none";
64	elmex	1.1	animations[0].num_animations=1;
65			animations[0].faces = (Fontindex *) malloc(sizeof(Fontindex));
66			animations[0].faces[0]=0;
67			animations[0].facings=0;
68
69			sprintf(buf,"%s/animations", settings.datadir);
70			LOG(llevDebug,"Reading animations from %s...", buf);
71			if ((fp=fopen(buf,"r")) ==NULL) {
72	root	1.3	LOG(llevError, "Cannot open animations file %s: %s\n", buf, strerror(errno));
73	root	1.2	exit(-1);
74	elmex	1.1	}
75			while (fgets(buf, MAX_BUF-1, fp)!=NULL) {
76	root	1.2	if (*buf=='#') continue;
77			/* Kill the newline */
78			buf[strlen(buf)-1] = '\0';
79			if (!strncmp(buf,"anim ", 5)) {
80			if (num_frames) {
81			LOG(llevError,"Didn't get a mina before %s\n", buf);
82			num_frames=0;
83			}
84			num_animations++;
85	root	1.4
86	root	1.5	Animations &anim = animations.at (num_animations);
87			anim.name = buf + 5;
88			anim.num = num_animations; /* for bsearch */
89			anim.facings = 1;
90	root	1.2	}
91			else if (!strncmp(buf,"mina",4)) {
92			animations[num_animations].faces = (Fontindex ) malloc(sizeof(Fontindex)num_frames);
93			for (i=0; i<num_frames; i++)
94			animations[num_animations].faces[i]=faces[i];
95			animations[num_animations].num_animations = num_frames;
96			if (num_frames % animations[num_animations].facings) {
97			LOG(llevDebug,"Animation %s frame numbers (%d) is not a multiple of facings (%d)\n",
98	root	1.4	&animations[num_animations].name, num_frames, animations[num_animations].facings);
99	root	1.2	}
100			num_frames=0;
101			}
102			else if (!strncmp(buf,"facings",7)) {
103			if (!(animations[num_animations].facings = atoi(buf+7))) {
104			LOG(llevDebug,"Animation %s has 0 facings, line=%s\n",
105	root	1.4	&animations[num_animations].name, buf);
106	root	1.2	animations[num_animations].facings=1;
107			}
108
109			} else {
110			if (!(faces[num_frames++] = FindFace(buf,0)))
111			LOG(llevDebug,"Could not find face %s for animation %s\n",
112	root	1.4	buf, &animations[num_animations].name);
113	root	1.2	}
114	elmex	1.1	}
115			fclose(fp);
116			LOG(llevDebug,"done. got (%d)\n", num_animations);
117			}
118
119			static int anim_compare(const Animations a, const Animations b) {
120			return strcmp(a->name, b->name);
121			}
122
123			/* Tries to find the animation id that matches name. Returns an integer match
124			* 0 if no match found (animation 0 is initialized as the 'bug' face
125			*/
126			int find_animation(const char *name)
127			{
128			Animations search, *match;
129
130			search.name = name;
131
132	root	1.5	match = (Animations*)bsearch(&search, &animations [0], (num_animations+1),
133	root	1.2	sizeof(Animations), (int ()(const void, const void*))anim_compare);
134	elmex	1.1
135
136			if (match) return match->num;
137			LOG(llevError,"Unable to find animation %s\n", name);
138			return 0;
139			}
140
141			/*
142			* animate_object(object) updates the face-variable of an object.
143			* If the object is the head of a multi-object, all objects are animated.
144			* op is the object to animate.
145			* dir is the direction the object is facing. This is generally same as
146			* op->direction, but in some cases, op->facing is used instead - the
147			* caller has a better idea which one it really wants to be using,
148			* so let it pass along the right one.
149			*/
150
151			void animate_object(object *op, int dir) {
152			int max_state; /* Max animation state object should be drawn in */
153			int base_state; /* starting index # to draw from */
154
155			if(!op->animation_id \|\| !NUM_ANIMATIONS(op)) {
156	root	1.2	LOG(llevError,"Object lacks animation.\n");
157			dump_object(op);
158			return;
159	elmex	1.1	}
160			if (op->head) {
161	root	1.2	dir=op->head->direction;
162	elmex	1.1
163	root	1.2	if (NUM_ANIMATIONS(op) == NUM_ANIMATIONS(op->head))
164			op->state = op->head->state;
165			else
166			++op->state;
167	elmex	1.1	}
168			else {
169	root	1.2	++op->state; /* increase draw state */
170	elmex	1.1	}
171
172			/* If object is turning, then max animation state is half through the
173			* animations. Otherwise, we can use all the animations.
174			*/
175			max_state=NUM_ANIMATIONS(op)/ NUM_FACINGS(op);
176			base_state=0;
177			/* at least in the older aniamtions that used is_turning, the first half
178			* of the animations were left facing, the second half right facing.
179			* Note in old the is_turning, it was set so that the animation for a monster
180			* was always towards the enemy - now it is whatever direction the monster
181			* is facing.
182			*/
183			if (NUM_FACINGS(op)==2) {
184	root	1.2	if (dir<5) base_state=0;
185			else base_state=NUM_ANIMATIONS(op)/2;
186	elmex	1.1	}
187			else if (NUM_FACINGS(op)==4) {
188	root	1.2	if (dir==0) base_state=0;
189			else base_state = ((dir-1)/2) * (NUM_ANIMATIONS(op)/4);
190	elmex	1.1	}
191			else if (NUM_FACINGS(op)==8) {
192	root	1.2	if (dir==0) base_state=0;
193			else base_state = (dir-1)*(NUM_ANIMATIONS(op)/8);
194	elmex	1.1	}
195
196			/* If beyond drawable states, reset */
197			if (op->state>=max_state) op->state=0;
198
199			SET_ANIMATION(op, op->state + base_state);
200
201			if(op->face==blank_face)
202	root	1.2	op->invisible=1;
203	elmex	1.1
204			/* This block covers monsters (eg, pixies) which are supposed to
205			* cycle from visible to invisible and back to being visible.
206			* as such, disable it for players, as then players would become
207			* visible.
208			*/
209			else if(op->type != PLAYER && QUERY_FLAG((&op->arch->clone),FLAG_ALIVE)) {
210	root	1.2	if(op->face->number==0) {
211			op->invisible=1;
212			CLEAR_FLAG(op, FLAG_ALIVE);
213			} else {
214			op->invisible=0;
215			SET_FLAG(op, FLAG_ALIVE);
216			}
217	elmex	1.1	}
218
219			if(op->more)
220	root	1.2	animate_object(op->more, dir);
221	elmex	1.1
222			/* update_object will also recursively update all the pieces.
223			* as such, we call it last, and only call it for the head
224			* piece, and not for the other tail pieces.
225			*/
226			if (!op->head)
227	root	1.2	update_object(op, UP_OBJ_FACE);
228	elmex	1.1	}
229