summaryrefslogtreecommitdiffstats
path: root/src/core/References.cpp
blob: 6b0c868ca69f127c9a2e0f7bc6825e31f764a99f (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
#include "common.h"

#include "World.h"
#include "Vehicle.h"
#include "PlayerPed.h"
#include "Pools.h"
#include "References.h"

CReference CReferences::aRefs[NUMREFERENCES];
CReference *CReferences::pEmptyList;

void
CReferences::Init(void)
{
	int i;
	pEmptyList = &aRefs[0];
	for(i = 0; i < NUMREFERENCES; i++){
		aRefs[i].pentity = nil;
		aRefs[i].next = &aRefs[i+1];
	}
	aRefs[NUMREFERENCES-1].next = nil;
}

void
CEntity::RegisterReference(CEntity **pent)
{
	if(IsBuilding())
		return;
	CReference *ref;
	// check if already registered
	for(ref = m_pFirstReference; ref; ref = ref->next)
		if(ref->pentity == pent)
			return;
	// have to allocate new reference
	ref = CReferences::pEmptyList;
	if(ref){
		CReferences::pEmptyList = ref->next;

		ref->pentity = pent;
		ref->next = m_pFirstReference;
		m_pFirstReference = ref;
		return;
	}
	return;
}

// Clear all references to this entity
void
CEntity::ResolveReferences(void)
{
	CReference *ref;
	// clear pointers to this entity
	for(ref = m_pFirstReference; ref; ref = ref->next)
		if(*ref->pentity == this)
			*ref->pentity = nil;
	// free list
	if(m_pFirstReference){
		for(ref = m_pFirstReference; ref->next; ref = ref->next)
			;
		ref->next = CReferences::pEmptyList;
		CReferences::pEmptyList = m_pFirstReference;
		m_pFirstReference = nil;
	}
}

// Free all references that no longer point to this entity
void
CEntity::PruneReferences(void)
{
	CReference *ref, *next, **lastnextp;
	lastnextp = &m_pFirstReference;
	for(ref = m_pFirstReference; ref; ref = next){
		next = ref->next;
		if(*ref->pentity == this)
			lastnextp = &ref->next;
		else{
			*lastnextp = ref->next;
			ref->next = CReferences::pEmptyList;
			CReferences::pEmptyList = ref;
		}
	}
}

void
CReferences::RemoveReferencesToPlayer(void)
{
	if(FindPlayerVehicle())
		FindPlayerVehicle()->ResolveReferences();
#ifdef FIX_BUGS
	if (FindPlayerPed()) {
		CPlayerPed* pPlayerPed = FindPlayerPed();
		FindPlayerPed()->ResolveReferences();
		CWorld::Players[CWorld::PlayerInFocus].m_pPed = pPlayerPed;
		pPlayerPed->RegisterReference((CEntity**)&CWorld::Players[CWorld::PlayerInFocus].m_pPed);
	}
#else
	if(FindPlayerPed())
		FindPlayerPed()->ResolveReferences();
#endif
}

void
CReferences::PruneAllReferencesInWorld(void)
{
	int i;
	CEntity *e;

	i = CPools::GetPedPool()->GetSize();
	while(--i >= 0){
		e = CPools::GetPedPool()->GetSlot(i);
		if(e)
			e->PruneReferences();
	}

	i = CPools::GetVehiclePool()->GetSize();
	while(--i >= 0){
		e = CPools::GetVehiclePool()->GetSlot(i);
		if(e)
			e->PruneReferences();
	}

	i = CPools::GetObjectPool()->GetSize();
	while(--i >= 0){
		e = CPools::GetObjectPool()->GetSlot(i);
		if(e)
			e->PruneReferences();
	}
}