Crossfire Server, Trunk  R20513
thrown_object.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 thrown_object_type_process(ob_methods *context, object *op);
34 
41 }
42 
49 static method_ret thrown_object_type_process(ob_methods *context, object *op) {
50  if (op->map == NULL) {
51  LOG(llevError, "BUG: Thrown object had no map.\n");
52  object_remove(op);
54  return METHOD_ERROR;
55  }
56 
57  /* we need to stop thrown objects at some point. Like here. */
58  if (op->type == THROWN_OBJ) {
59  /* If the object that the THROWN_OBJ encapsulates disappears,
60  * we need to have this object go away also - otherwise, you get
61  * left over remnants on the map. Where this currently happens
62  * is if the player throws a bomb - the bomb explodes on its own,
63  * but this object sticks around. We could handle the cleanup in the
64  * bomb code, but there are potential other cases where that could happen,
65  * and it is easy enough to clean it up here.
66  */
67  if (op->inv == NULL) {
68  object_remove(op);
70  return METHOD_OK;
71  }
72  if (op->last_sp-- < 0) {
73  stop_projectile(op);
74  return METHOD_OK;
75  }
76  }
77 
78  return common_process_projectile(context, op);
79 }
Error, serious thing.
Definition: logger.h:11
Sound-related defines.
Typedefs for ob_methods.
Definition: ob_methods.h:45
#define METHOD_ERROR
Definition: ob_methods.h:17
int32_t last_sp
As last_heal, but for spell points.
Definition: object.h:358
Global type definitions and header inclusions.
void init_type_thrown_object(void)
Initializer for the THROWN_OBJ object type.
Definition: thrown_object.c:38
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 object_free_drop_inventory(object *ob)
Frees everything allocated by an object, removes it from the list of used objects, and puts it on the list of free objects.
Definition: object.c:1368
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
#define METHOD_OK
Definition: ob_methods.h:15
struct mapdef * map
Pointer to the map in which this object is present.
Definition: object.h:297
method_ret common_process_projectile(ob_methods *context, object *op)
Move an arrow or thrown object along its course.
Definition: projectile.c:78
void stop_projectile(object *op)
Handle an arrow or thrown object stopping.
Definition: projectile.c:36
Object type variables.
uint8_t type
PLAYER, BULLET, etc.
Definition: object.h:338
void register_process(int ob_type, process_func method)
Registers the process method for the given type.
Definition: ob_types.c:71
static method_ret thrown_object_type_process(ob_methods *context, object *op)
Move a thrown object along its course.
Definition: thrown_object.c:49
struct obj * inv
Pointer to the first object in the inventory.
Definition: object.h:290
void LOG(LogLevel logLevel, const char *format,...)
Logs a message to stderr, or to file.
Definition: logger.c:51
method_ret common_projectile_move_on(ob_methods *context, object *trap, object *victim, object *originator)
Move on this Thrown Object object.
Definition: projectile.c:226
Object type functions and variables.
void object_remove(object *op)
This function removes the object op from the linked list of objects which it is currently tied to...
Definition: object.c:1654