source: golgotha/src/i4/device/device.cc @ 80

Last change on this file since 80 was 80, checked in by Sam Hocevar, 12 years ago
  • Adding the Golgotha source code. Not sure what's going to be interesting in there, but since it's all public domain, there's certainly stuff to pick up.
File size: 3.0 KB
Line 
1/********************************************************************** <BR>
2  This file is part of Crack dot Com's free source code release of
3  Golgotha. <a href="http://www.crack.com/golgotha_release"> <BR> for
4  information about compiling & licensing issues visit this URL</a>
5  <PRE> If that doesn't help, contact Jonathan Clark at
6  golgotha_source@usa.net (Subject should have "GOLG" in it)
7***********************************************************************/
8
9#include "device/device.hh"
10#include "device/event.hh"
11#include "error/error.hh"
12#include "device/kernel.hh"
13#include "init/init.hh"
14
15#include <stdlib.h>
16
17i4_device_class::i4_device_class()
18{
19  next=NULL;
20}
21
22void i4_device_class::send_event_to_agents(i4_event *ev, device_flags receive_types)
23{
24  i4_kernel.broadcast_event_type(ev, receive_types);
25}
26
27i4_event_handler_class::~i4_event_handler_class()
28{
29  I4_ASSERT(!thinking(), "i4_event_handler::thinking on destructor");
30
31#ifndef I4_RETAIL
32  if (!i4_is_initialized() && first)
33  {
34    i4_error("event_handler has references at end of program");
35  }
36#endif
37
38
39  // clear out all the references to ourself
40  while (first)
41  {
42    first->ref=0;
43    first=first->next;
44  }
45}
46
47
48i4_event_reaction_class *i4_event_reaction_class::copy()
49{
50  i4_event *ev=event ? event->copy() : 0;
51
52  return new i4_event_reaction_class(handler_reference.get(), ev);
53}
54
55i4_event_reaction_class::~i4_event_reaction_class()
56{
57  I4_ASSERT(i4_is_initialized() || handler_reference.get()==0,
58            "event reaction is global and has a reference at end of program");
59
60
61  handler_reference.reference(0);
62
63  I4_ASSERT(i4_is_initialized() || event==0,
64            "event reaction is global and has an event at end of program");
65
66  if (event)
67    delete event;
68}
69
70i4_event_reaction_class::i4_event_reaction_class(i4_event_handler_class *hand,
71                                                 i4_event               *event)
72  : event(event)
73{
74 
75  handler_reference.reference(hand);
76}
77
78i4_event_reaction_class::i4_event_reaction_class(i4_event_handler_class *hand,
79                                                 w32 user_message_id)
80{
81  event=new i4_user_message_event_class(user_message_id); 
82  handler_reference.reference(hand);
83}
84
85
86void i4_event_handler_private_reference_class::destroy_ref()
87{
88  // see if we need to remove our reference from the object we were referencing
89  if (ref)
90  {
91    i4_event_handler_private_reference_class *p, *last=0;
92    p=ref->first;
93    while (p && p!=this)
94    {
95      last=p;
96      p=p->next;
97    }
98
99    I4_ASSERT(p, "destroy_ref : couldn't find reference");
100   
101    if (last)
102      last->next=next;
103    else
104      ref->first=next;
105
106    ref=0;
107  }
108}
109
110// if who is 0, then reference is destroyed
111void i4_event_handler_private_reference_class::reference(i4_event_handler_class *who)
112{
113  destroy_ref();
114  if (who)
115  {
116    ref=who;
117    next=who->first;
118    who->first=this;
119  }
120}
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