Paranoia2/dlls/alias.cpp

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/***
*
* NEW file for the Mod "Spirit of Half-Life", by Laurie R. Cheers. (LRC)
* Created 19/11/00
*
***/
/*
===== alias.cpp ========================================================
Alias entities, replace the less powerful and (IMHO) less intuitive
trigger_changetarget entity.
*/
#include "extdll.h"
#include "util.h"
#include "cbase.h"
TYPEDESCRIPTION CBaseAlias::m_SaveData[] =
{
DEFINE_FIELD( CBaseAlias, m_pNextAlias, FIELD_CLASSPTR ),
};
IMPLEMENT_SAVERESTORE( CBaseAlias, CPointEntity );
/*********************
* Worldcraft entity: info_alias
*
* targetname- alias name
* target- alias destination while ON
* netname- alias destination while OFF
**********************/
#define SF_ALIAS_OFF 1
#define SF_ALIAS_DEBUG 2
class CInfoAlias : public CBaseAlias
{
public:
void Use(CBaseEntity* pActivator, CBaseEntity* pCaller, USE_TYPE useType, float value);
void Spawn( void );
STATE GetState() { return (pev->spawnflags & SF_ALIAS_OFF)?STATE_OFF:STATE_ON; }
CBaseEntity *FollowAlias( CBaseEntity *pFrom );
void ChangeValue( int iszValue );
void FlushChanges( void );
};
LINK_ENTITY_TO_CLASS( info_alias, CInfoAlias );
void CInfoAlias::Spawn( void )
{
if (pev->spawnflags & SF_ALIAS_OFF)
pev->message = pev->netname;
else
pev->message = pev->target;
}
void CInfoAlias::Use( CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYPE useType, float value )
{
if (pev->spawnflags & SF_ALIAS_OFF)
{
if (pev->spawnflags & SF_ALIAS_DEBUG)
ALERT(at_debug,"DEBUG: info_alias %s turns on\n",STRING(pev->targetname));
pev->spawnflags &= ~SF_ALIAS_OFF;
pev->noise = pev->target;
}
else
{
if (pev->spawnflags & SF_ALIAS_DEBUG)
ALERT(at_debug,"DEBUG: info_alias %s turns off\n",STRING(pev->targetname));
pev->spawnflags |= SF_ALIAS_OFF;
pev->noise = pev->netname;
}
UTIL_AddToAliasList( this );
}
CBaseEntity *CInfoAlias::FollowAlias( CBaseEntity *pFrom )
{
return UTIL_FindEntityByTargetname( pFrom, STRING(pev->message) );
}
void CInfoAlias::ChangeValue( int iszValue )
{
pev->noise = iszValue;
UTIL_AddToAliasList( this );
}
void CInfoAlias::FlushChanges( void )
{
pev->message = pev->noise;
if (pev->spawnflags & SF_ALIAS_DEBUG)
ALERT(at_debug,"DEBUG: info_alias %s now refers to \"%s\"\n", STRING(pev->targetname), STRING(pev->message));
}
/*********************
* Worldcraft entity: info_group
*
* targetname- name
* target- alias entity to affect
* other values are handled in a multi_manager-like way.
**********************/
// definition in cbase.h
#define SF_GROUP_DEBUG 2
LINK_ENTITY_TO_CLASS( info_group, CInfoGroup );
TYPEDESCRIPTION CInfoGroup::m_SaveData[] =
{
DEFINE_FIELD( CInfoGroup, m_cMembers, FIELD_INTEGER ),
DEFINE_ARRAY( CInfoGroup, m_iszMemberName, FIELD_STRING, MAX_MULTI_TARGETS ),
DEFINE_ARRAY( CInfoGroup, m_iszMemberValue, FIELD_STRING, MAX_MULTI_TARGETS ),
DEFINE_FIELD( CInfoGroup, m_iszDefaultMember, FIELD_STRING ),
};
IMPLEMENT_SAVERESTORE(CInfoGroup,CBaseEntity);
void CInfoGroup :: KeyValue( KeyValueData *pkvd )
{
if (FStrEq(pkvd->szKeyName, "defaultmember"))
{
m_iszDefaultMember = ALLOC_STRING(pkvd->szValue);
pkvd->fHandled = TRUE;
}
// this assumes that additional fields are targetnames and their values are delay values.
else if ( m_cMembers < MAX_MULTI_TARGETS )
{
char tmp[128];
UTIL_StripToken( pkvd->szKeyName, tmp );
m_iszMemberName [ m_cMembers ] = ALLOC_STRING( tmp );
m_iszMemberValue [ m_cMembers ] = ALLOC_STRING (pkvd->szValue);
m_cMembers++;
pkvd->fHandled = TRUE;
}
else
{
ALERT(at_error,"Too many members for info_group %s (limit is %d)\n",STRING(pev->targetname),MAX_MULTI_TARGETS);
}
}
void CInfoGroup::Use( CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYPE useType, float value )
{
CBaseEntity *pTarget = UTIL_FindEntityByTargetname( NULL, STRING( pev->target ) );
if (pTarget && pTarget->IsAlias())
{
if (pev->spawnflags & SF_GROUP_DEBUG)
ALERT(at_debug, "DEBUG: info_group %s changes the contents of %s \"%s\"\n",STRING(pev->targetname), STRING(pTarget->pev->classname), STRING(pTarget->pev->targetname));
((CBaseAlias*)pTarget)->ChangeValue(this);
}
else if (pev->target)
{
ALERT(at_debug, "info_group \"%s\": alias \"%s\" was not found or not an alias!", STRING(pev->targetname), STRING(pev->target));
}
}
int CInfoGroup::GetMember( const char* szMemberName )
{
if (!szMemberName)
{
ALERT(at_debug,"info_group: GetMember called with null szMemberName!?\n");
return NULL;
}
for (int i = 0; i < m_cMembers; i++)
{
if (FStrEq(szMemberName, STRING(m_iszMemberName[i])))
{
// ALERT(at_console,"getMember: found member\n");
return m_iszMemberValue[i];
}
}
if (m_iszDefaultMember)
{
static char szBuffer[128];
strcpy(szBuffer, STRING(m_iszDefaultMember));
strcat(szBuffer, szMemberName);
return MAKE_STRING(szBuffer);
// this is a messy way to do it... but currently, only one
// GetMember gets performed at a time, so it works.
}
ALERT(at_debug,"info_group \"%s\" has no member called \"%s\".\n",STRING(pev->targetname),szMemberName);
// ALERT(at_console,"getMember: fail\n");
return NULL;
}
/*********************
* Worldcraft entity: multi_alias
*
* targetname- name
* other values are handled in a multi_manager-like way.
**********************/
// definition in cbase.h
LINK_ENTITY_TO_CLASS( multi_alias, CMultiAlias );
TYPEDESCRIPTION CMultiAlias::m_SaveData[] =
{
DEFINE_FIELD( CMultiAlias, m_cTargets, FIELD_INTEGER ),
DEFINE_ARRAY( CMultiAlias, m_iszTargets, FIELD_STRING, MAX_MULTI_TARGETS ),
DEFINE_FIELD( CMultiAlias, m_iTotalValue, FIELD_INTEGER ),
DEFINE_ARRAY( CMultiAlias, m_iValues, FIELD_INTEGER, MAX_MULTI_TARGETS ),
DEFINE_FIELD( CMultiAlias, m_iMode, FIELD_INTEGER ),
};
IMPLEMENT_SAVERESTORE(CMultiAlias,CBaseAlias);
void CMultiAlias :: KeyValue( KeyValueData *pkvd )
{
if (FStrEq(pkvd->szKeyName, "m_iMode"))
{
m_iMode = atoi( pkvd->szValue );
pkvd->fHandled = TRUE;
}
// this assumes that additional fields are targetnames and their values are probability values.
else if ( m_cTargets < MAX_MULTI_TARGETS )
{
char tmp[128];
UTIL_StripToken( pkvd->szKeyName, tmp );
m_iszTargets [ m_cTargets ] = ALLOC_STRING( tmp );
m_iValues [ m_cTargets ] = atoi( pkvd->szValue );
m_iTotalValue += m_iValues [ m_cTargets ];
m_cTargets++;
pkvd->fHandled = TRUE;
}
else
{
ALERT(at_error,"Too many targets for multi_alias %s (limit is %d)\n",STRING(pev->targetname), MAX_MULTI_TARGETS);
}
}
CBaseEntity *CMultiAlias::FollowAlias( CBaseEntity *pStartEntity )
{
CBaseEntity* pBestEntity = NULL; // the entity we're currently planning to return.
int iBestOffset = -1; // the offset of that entity.
CBaseEntity* pTempEntity;
int iTempOffset;
int i = 0;
if (m_iMode)
{
// During any given 'game moment', this code may be called more than once. It must use the
// same random values each time (because otherwise it gets really messy). I'm using srand
// to arrange this.
srand( (int)(gpGlobals->time * 100) );
rand(); // throw away the first result - it's just the seed value
if (m_iMode == 1) // 'choose one' mode
{
int iRandom = 1 + (rand() % m_iTotalValue);
for (i = 0; i < m_cTargets; i++)
{
iRandom -= m_iValues[i];
if (iRandom <= 0)
break;
}
}
else // 'percent chance' mode
{
for (i = 0; i < m_cTargets; i++)
{
if (m_iValues[i] >= rand() % 100)
break;
}
}
}
while (i < m_cTargets)
{
pTempEntity = UTIL_FindEntityByTargetname(pStartEntity,STRING(m_iszTargets[i]));
if ( pTempEntity )
{
// We've found an entity; only use it if its offset is lower than the offset we've currently got.
iTempOffset = OFFSET(pTempEntity->pev);
if (iBestOffset == -1 || iTempOffset < iBestOffset)
{
iBestOffset = iTempOffset;
pBestEntity = pTempEntity;
}
}
if (m_iMode == 1)
break; // if it's in "pick one" mode, stop after the first.
else if (m_iMode == 2)
{
i++;
// if it's in "percent chance" mode, try to find another one to fire.
while (i < m_cTargets)
{
if (m_iValues[i] > rand() % 100)
break;
i++;
}
}
else
i++;
}
return pBestEntity;
}
/*********************
* Worldcraft entity: trigger_changealias
*
* target- alias entity to affect
* netname- value to change the alias to
**********************/
#define SF_CHANGEALIAS_RESOLVE 1
#define SF_CHANGEALIAS_DEBUG 2
class CTriggerChangeAlias : public CBaseEntity
{
public:
void Spawn( void );
void Use( CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYPE useType, float value );
int ObjectCaps( void ) { return CBaseEntity::ObjectCaps() & ~FCAP_ACROSS_TRANSITION; }
};
LINK_ENTITY_TO_CLASS( trigger_changealias, CTriggerChangeAlias );
void CTriggerChangeAlias::Spawn( void )
{
}
void CTriggerChangeAlias::Use( CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYPE useType, float value )
{
CBaseEntity *pTarget = UTIL_FindEntityByTargetname( NULL, STRING( pev->target ), pActivator );
if (pTarget && pTarget->IsAlias())
{
CBaseEntity *pValue;
if (FStrEq(STRING(pev->netname), "*locus"))
{
pValue = pActivator;
}
else if (pev->spawnflags & SF_CHANGEALIAS_RESOLVE)
{
pValue = UTIL_FollowReference(NULL, STRING(pev->netname));
}
if (pValue)
((CBaseAlias*)pTarget)->ChangeValue(pValue);
else
((CBaseAlias*)pTarget)->ChangeValue(pev->netname);
}
else
{
ALERT(at_error, "trigger_changealias %s: alias \"%s\" was not found or not an alias!", STRING(pev->targetname), STRING(pev->target));
}
}