Crossfire Server, Trunk  R20513
trapdoor.c
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1 /*
2  CrossFire, A Multiplayer game for X-windows
3 
4  Copyright (C) 2007 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  The authors can be reached via e-mail at crossfire-devel@real-time.com
22 */
23 
27 #include <global.h>
28 #include <ob_methods.h>
29 #include <ob_types.h>
30 #include <sounds.h>
31 #include <sproto.h>
32 
33 static method_ret trapdoor_type_move_on(ob_methods *context, object *trap, object *victim, object *originator);
34 
38 void init_type_trapdoor(void) {
40 }
41 
50 static method_ret trapdoor_type_move_on(ob_methods *context, object *trap, object *victim, object *originator) {
51  int max, sound_was_played;
52  object *ab, *ab_next;
53  if (common_pre_ob_move_on(trap, victim, originator) == METHOD_ERROR)
54  return METHOD_OK;
55  if (!trap->value) {
56  int tot;
57 
58  for (ab = trap->above, tot = 0; ab != NULL; ab = ab->above)
59  if ((ab->move_type && trap->move_on) || ab->move_type == 0)
60  tot += (ab->nrof ? ab->nrof : 1)*ab->weight+ab->carrying;
61 
62  if (!(trap->value = (tot > trap->weight) ? 1 : 0)) {
63  common_post_ob_move_on(trap, victim, originator);
64  return METHOD_OK;
65  }
66  SET_ANIMATION(trap, trap->value);
68  }
69 
70  for (ab = trap->above, max = 100, sound_was_played = 0; --max && ab; ab = ab_next) {
71  /* need to set this up, since if we do transfer the object,
72  * ab->above would be bogus
73  */
74  ab_next = ab->above;
75 
76  if ((ab->move_type && trap->move_on) || ab->move_type == 0) {
77  if (!sound_was_played) {
78  play_sound_map(SOUND_TYPE_GROUND, trap, 0, "fall hole");
79  sound_was_played = 1;
80  }
82  "You fall into a trapdoor!");
83  transfer_ob(ab, (int)EXIT_X(trap), (int)EXIT_Y(trap), 0, ab);
84  }
85  }
86  common_post_ob_move_on(trap, victim, originator);
87  return METHOD_OK;
88 }
Sound-related defines.
#define UP_OBJ_FACE
Only thing that changed was the face.
Definition: object.h:519
MoveType move_type
Type of movement this object uses.
Definition: object.h:424
MoveType move_on
Move types affected moving on to this space.
Definition: object.h:427
Typedefs for ob_methods.
Definition: ob_methods.h:45
method_ret common_pre_ob_move_on(object *trap, object *victim, object *originator)
Definition: common_apply.c:51
#define METHOD_ERROR
Definition: ob_methods.h:17
#define MSG_TYPE_APPLY_TRAP
Have activated a trap.
Definition: newclient.h:601
#define SOUND_TYPE_GROUND
Definition: newclient.h:311
#define SET_ANIMATION(ob, newanim)
Definition: global.h:171
struct obj * above
Pointer to the object stacked above this one.
Definition: object.h:288
void object_update(object *op, int action)
object_update() updates the array which represents the map.
Definition: object.c:1239
Global type definitions and header inclusions.
void draw_ext_info(int flags, int pri, const object *pl, uint8_t type, uint8_t subtype, const char *message)
Sends message to player(s).
Definition: main.c:310
#define MSG_TYPE_APPLY
Applying objects.
Definition: newclient.h:384
char method_ret
Define some standard return values for callbacks which don&#39;t need to return any other results...
Definition: ob_methods.h:14
void register_move_on(int ob_type, move_on_func method)
Registers the move_on method for the given type.
Definition: ob_types.c:89
int32_t weight
Attributes of the object.
Definition: object.h:365
#define METHOD_OK
Definition: ob_methods.h:15
int32_t carrying
How much weight this object contains.
Definition: object.h:367
uint32_t nrof
How many of the objects.
Definition: object.h:333
See Trapdoor.
Definition: object.h:210
#define EXIT_X(xyz)
Definition: define.h:457
#define EXIT_Y(xyz)
Definition: define.h:458
Object type variables.
void common_post_ob_move_on(object *trap, object *victim, object *originator)
Definition: common_apply.c:87
static method_ret trapdoor_type_move_on(ob_methods *context, object *trap, object *victim, object *originator)
Move on this Trapdoor object.
Definition: trapdoor.c:50
void init_type_trapdoor(void)
Initializer for the TRAPDOOR object type.
Definition: trapdoor.c:38
#define NDI_UNIQUE
Print immediately, don&#39;t buffer.
Definition: newclient.h:245
int transfer_ob(object *op, int x, int y, int randomly, object *originator)
Move an object (even linked objects) to another spot on the same map.
Definition: move.c:144
void play_sound_map(int8_t sound_type, object *emitter, int dir, const char *action)
Plays a sound on a map.
Definition: sounds.c:101
Object type functions and variables.
int32_t value
How much money it is worth (or contains)
Definition: object.h:350