UNLOZE/sm-ext-CSSFixes
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Add support for custom filter entities

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Starting with filter_activator_context
This commit is contained in:
xen 2020-08-03 13:42:07 +02:00
parent bdb8b4e845
commit 2d8d962400
2 changed files with 111 additions and 0 deletions
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99
extension.cpp
View File

@ -37,6 +37,8 @@
#include <IEngineTrace.h>
#include <server_class.h>
#include <ispatialpartition.h>
#include <utlvector.h>
#include <string_t.h>
#define SetBit(A,I) ((A)[(I) >> 5] |= (1 << ((I) & 31)))
#define ClearBit(A,I) ((A)[(I) >> 5] &= ~(1 << ((I) & 31)))
@ -173,6 +175,13 @@ struct variant_hax
const char *pszValue;
};
struct ResponseContext_t
{
string_t m_iszName;
string_t m_iszValue;
float m_fExpirationTime;
};
struct inputdata_t
{
// The entity that initially caused this chain of output events.
@ -202,6 +211,8 @@ IGameConfig *g_pGameConf = NULL;
CDetour *g_pDetour_InputTestActivator = NULL;
CDetour *g_pDetour_PostConstructor = NULL;
CDetour *g_pDetour_CreateEntityByName = NULL;
CDetour *g_pDetour_PassesFilterImpl = NULL;
CDetour *g_pDetour_FindUseEntity = NULL;
CDetour *g_pDetour_CTraceFilterSimple = NULL;
CDetour *g_pDetour_KeyValue = NULL;
@ -243,6 +254,64 @@ DETOUR_DECL_MEMBER1(DETOUR_PostConstructor, void, const char *, szClassname)
DETOUR_MEMBER_CALL(DETOUR_PostConstructor)(szClassname);
}
// Implementation for custom filter entities
DETOUR_DECL_MEMBER2(DETOUR_PassesFilterImpl, bool, CBaseEntity*, pCaller, CBaseEntity*, pEntity)
{
CBaseEntity* pThisEnt = (CBaseEntity*)this;
// filter_activator_context: filters activators based on whether they have a given context with a nonzero value
// https://developer.valvesoftware.com/wiki/Filter_activator_context
// Implemented here because CUtlVectors are not supported in sourcepawn
if (!strcasecmp(gamehelpers->GetEntityClassname(pThisEnt), "filter_activator_context"))
{
static int m_ResponseContexts_offset = 0, m_iszResponseContext_offset = 0;
if (!m_ResponseContexts_offset && !m_iszResponseContext_offset)
{
datamap_t *pDataMap = gamehelpers->GetDataMap(pEntity);
sm_datatable_info_t info;
// Both are CBaseEntity members, so the offsets will always be the same across different entity classes
gamehelpers->FindDataMapInfo(pDataMap, "m_ResponseContexts", &info);
m_ResponseContexts_offset = info.actual_offset;
gamehelpers->FindDataMapInfo(pDataMap, "m_iszResponseContext", &info);
m_iszResponseContext_offset = info.actual_offset;
}
CUtlVector<ResponseContext_t> vecResponseContexts;
vecResponseContexts = *(CUtlVector<ResponseContext_t>*)((uint8_t*)pEntity + m_ResponseContexts_offset);
const char *szFilterContext = (*(string_t*)((uint8_t*)pThisEnt + m_iszResponseContext_offset)).ToCStr();
const char *szContext;
int iContextValue;
for (int i = 0; i < vecResponseContexts.Count(); i++)
{
szContext = vecResponseContexts[i].m_iszName.ToCStr();
iContextValue = atoi(vecResponseContexts[i].m_iszValue.ToCStr());
if (!strcasecmp(szFilterContext, szContext) && iContextValue > 0)
return true;
}
return false;
}
// CBaseFilter::PassesFilterImpl just returns true so no need to call it
return true;
}
// Switch new entity classnames to ones that can be instantiated while keeping the classname keyvalue intact so it can be used later
DETOUR_DECL_STATIC2(DETOUR_CreateEntityByName, CBaseEntity*, const char*, className, int, iForceEdictIndex)
{
// Nice of valve to expose CBaseFilter as filter_base :)
if (strcasecmp(className, "filter_activator_context") == 0)
className = "filter_base";
return DETOUR_STATIC_CALL(DETOUR_CreateEntityByName)(className, iForceEdictIndex);
}
DETOUR_DECL_MEMBER2(DETOUR_KeyValue, bool, const char *, szKeyName, const char *, szValue)
{
// Fix crash bug in engine
@ -455,6 +524,22 @@ bool CSSFixes::SDK_OnLoad(char *error, size_t maxlength, bool late)
return false;
}
g_pDetour_CreateEntityByName = DETOUR_CREATE_STATIC(DETOUR_CreateEntityByName, "CreateEntityByName");
if (g_pDetour_CreateEntityByName == NULL)
{
snprintf(error, maxlength, "Could not create detour for CreateEntityByName");
SDK_OnUnload();
return false;
}
g_pDetour_PassesFilterImpl = DETOUR_CREATE_MEMBER(DETOUR_PassesFilterImpl, "CBaseFilter_PassesFilterImpl");
if (g_pDetour_PassesFilterImpl == NULL)
{
snprintf(error, maxlength, "Could not create detour for CBaseFilter_PassesFilterImpl");
SDK_OnUnload();
return false;
}
g_pDetour_FindUseEntity = DETOUR_CREATE_MEMBER(DETOUR_FindUseEntity, "CBasePlayer_FindUseEntity");
if(g_pDetour_FindUseEntity == NULL)
{
@ -497,6 +582,8 @@ bool CSSFixes::SDK_OnLoad(char *error, size_t maxlength, bool late)
g_pDetour_InputTestActivator->EnableDetour();
g_pDetour_PostConstructor->EnableDetour();
g_pDetour_CreateEntityByName->EnableDetour();
g_pDetour_PassesFilterImpl->EnableDetour();
g_pDetour_FindUseEntity->EnableDetour();
g_pDetour_CTraceFilterSimple->EnableDetour();
g_pDetour_KeyValue->EnableDetour();
@ -625,6 +712,18 @@ void CSSFixes::SDK_OnUnload()
g_pDetour_PostConstructor = NULL;
}
if (g_pDetour_CreateEntityByName != NULL)
{
g_pDetour_CreateEntityByName->Destroy();
g_pDetour_CreateEntityByName = NULL;
}
if (g_pDetour_PassesFilterImpl != NULL)
{
g_pDetour_PassesFilterImpl->Destroy();
g_pDetour_PassesFilterImpl = NULL;
}
if(g_pDetour_FindUseEntity != NULL)
{
g_pDetour_FindUseEntity->Destroy();

12
gamedata/CSSFixes.txt
View File

@ -15,6 +15,18 @@
"library" "server"
"linux" "@_ZN11CBaseEntity15PostConstructorEPKc"
}
"CBaseFilter_PassesFilterImpl"
{
"library" "server"
"linux" "@_ZN11CBaseFilter16PassesFilterImplEP11CBaseEntityS1_"
}
"CreateEntityByName"
{
"library" "server"
"linux" "@_Z18CreateEntityByNamePKci"
}
"CBasePlayer_FindUseEntity"
{