334 lines
6.6 KiB
C++
334 lines
6.6 KiB
C++
/***
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*
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* Copyright (c) 1996-2002, Valve LLC. All rights reserved.
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*
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* This product contains software technology licensed from Id
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* Software, Inc. ("Id Technology"). Id Technology (c) 1996 Id Software, Inc.
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* All Rights Reserved.
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*
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* Use, distribution, and modification of this source code and/or resulting
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* object code is restricted to non-commercial enhancements to products from
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* Valve LLC. All other use, distribution, or modification is prohibited
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* without written permission from Valve LLC.
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*
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****/
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#include "stdafx.h"
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#include "cbase.h"
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#include "trains.h"
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#include "saverestore.h"
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class CPathCorner : public CPointEntity
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{
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public:
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void Spawn(void);
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void KeyValue(KeyValueData *pkvd);
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float GetDelay(void) { return m_flWait; }
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int Save(CSave &save);
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int Restore(CRestore &restore);
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public:
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static TYPEDESCRIPTION m_SaveData[];
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private:
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float m_flWait;
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};
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LINK_ENTITY_TO_CLASS(path_corner, CPathCorner);
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TYPEDESCRIPTION CPathCorner::m_SaveData[] =
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{
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DEFINE_FIELD(CPathCorner, m_flWait, FIELD_FLOAT),
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};
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IMPLEMENT_SAVERESTORE(CPathCorner, CPointEntity);
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void CPathCorner::KeyValue(KeyValueData *pkvd)
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{
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if (FStrEq(pkvd->szKeyName, "wait"))
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{
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m_flWait = atof(pkvd->szValue);
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pkvd->fHandled = TRUE;
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}
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else
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CPointEntity::KeyValue(pkvd);
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}
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void CPathCorner::Spawn(void)
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{
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}
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TYPEDESCRIPTION CPathTrack::m_SaveData[] =
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{
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DEFINE_FIELD(CPathTrack, m_length, FIELD_FLOAT),
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DEFINE_FIELD(CPathTrack, m_pnext, FIELD_CLASSPTR),
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DEFINE_FIELD(CPathTrack, m_paltpath, FIELD_CLASSPTR),
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DEFINE_FIELD(CPathTrack, m_pprevious, FIELD_CLASSPTR),
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DEFINE_FIELD(CPathTrack, m_altName, FIELD_STRING),
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};
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IMPLEMENT_SAVERESTORE(CPathTrack, CBaseEntity);
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LINK_ENTITY_TO_CLASS(path_track, CPathTrack);
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void CPathTrack::KeyValue(KeyValueData *pkvd)
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{
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if (FStrEq(pkvd->szKeyName, "altpath"))
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{
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m_altName = ALLOC_STRING(pkvd->szValue);
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pkvd->fHandled = TRUE;
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}
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else
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CPointEntity::KeyValue(pkvd);
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}
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void CPathTrack::Use(CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYPE useType, float value)
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{
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if (m_paltpath)
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{
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int on = !FBitSet(pev->spawnflags, SF_PATH_ALTERNATE);
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if (ShouldToggle(useType, on))
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{
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if (on)
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SetBits(pev->spawnflags, SF_PATH_ALTERNATE);
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else
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ClearBits(pev->spawnflags, SF_PATH_ALTERNATE);
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}
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}
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else
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{
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int on = !FBitSet(pev->spawnflags, SF_PATH_DISABLED);
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if (ShouldToggle(useType, on))
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{
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if (on)
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SetBits(pev->spawnflags, SF_PATH_DISABLED);
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else
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ClearBits(pev->spawnflags, SF_PATH_DISABLED);
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}
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}
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}
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void CPathTrack::Link(void)
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{
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if (!FStringNull(pev->target))
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{
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edict_t *pentTarget = FIND_ENTITY_BY_TARGETNAME(NULL, STRING(pev->target));
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if (!FNullEnt(pentTarget))
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{
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m_pnext = CPathTrack::Instance(pentTarget);
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if (m_pnext)
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m_pnext->SetPrevious(this);
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}
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else
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ALERT(at_console, "Dead end link %s\n", STRING(pev->target));
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}
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if (m_altName)
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{
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edict_t *pentTarget = FIND_ENTITY_BY_TARGETNAME(NULL, STRING(m_altName));
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if (!FNullEnt(pentTarget))
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{
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m_paltpath = CPathTrack::Instance(pentTarget);
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if (m_paltpath)
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m_paltpath->SetPrevious(this);
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}
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}
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}
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void CPathTrack::Spawn(void)
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{
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pev->solid = SOLID_TRIGGER;
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UTIL_SetSize(pev, Vector(-8, -8, -8), Vector(8, 8, 8));
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m_pnext = NULL;
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m_pprevious = NULL;
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}
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void CPathTrack::Activate(void)
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{
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if (!FStringNull(pev->targetname))
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Link();
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}
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CPathTrack *CPathTrack::ValidPath(CPathTrack *ppath, int testFlag)
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{
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if (!ppath)
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return NULL;
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if (testFlag && FBitSet(ppath->pev->spawnflags, SF_PATH_DISABLED))
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return NULL;
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return ppath;
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}
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void CPathTrack::Project(CPathTrack *pstart, CPathTrack *pend, Vector *origin, float dist)
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{
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if (pstart && pend)
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{
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Vector dir = (pend->pev->origin - pstart->pev->origin);
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dir = dir.Normalize();
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*origin = pend->pev->origin + dir * dist;
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}
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}
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CPathTrack *CPathTrack::GetNext(void)
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{
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if (m_paltpath && FBitSet(pev->spawnflags, SF_PATH_ALTERNATE) && !FBitSet(pev->spawnflags, SF_PATH_ALTREVERSE))
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return m_paltpath;
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return m_pnext;
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}
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CPathTrack *CPathTrack::GetPrevious(void)
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{
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if (m_paltpath && FBitSet(pev->spawnflags, SF_PATH_ALTERNATE) && FBitSet(pev->spawnflags, SF_PATH_ALTREVERSE))
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return m_paltpath;
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return m_pprevious;
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}
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void CPathTrack::SetPrevious(CPathTrack *pprev)
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{
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if (pprev && !FStrEq(STRING(pprev->pev->targetname), STRING(m_altName)))
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m_pprevious = pprev;
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}
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CPathTrack *CPathTrack::LookAhead(Vector *origin, float dist, int move)
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{
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float originalDist = dist;
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CPathTrack *pcurrent = this;
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Vector currentPos = *origin;
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if (dist < 0)
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{
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dist = -dist;
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while (dist > 0)
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{
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Vector dir = pcurrent->pev->origin - currentPos;
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float length = dir.Length();
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if (!length)
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{
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if (!ValidPath(pcurrent->GetPrevious(), move))
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{
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if (!move)
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Project(pcurrent->GetNext(), pcurrent, origin, dist);
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return NULL;
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}
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pcurrent = pcurrent->GetPrevious();
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}
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else if (length > dist)
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{
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*origin = currentPos + (dir * (dist / length));
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return pcurrent;
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}
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else
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{
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dist -= length;
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currentPos = pcurrent->pev->origin;
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*origin = currentPos;
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if (!ValidPath(pcurrent->GetPrevious(), move))
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return NULL;
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pcurrent = pcurrent->GetPrevious();
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}
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}
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*origin = currentPos;
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return pcurrent;
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}
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else
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{
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while (dist > 0)
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{
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if (!ValidPath(pcurrent->GetNext(), move))
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{
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if (!move)
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Project(pcurrent->GetPrevious(), pcurrent, origin, dist);
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return NULL;
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}
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Vector dir = pcurrent->GetNext()->pev->origin - currentPos;
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float length = dir.Length();
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if (!length && !ValidPath(pcurrent->GetNext()->GetNext(), move))
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{
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if (dist == originalDist)
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return NULL;
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return pcurrent;
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}
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if (length > dist)
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{
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*origin = currentPos + (dir * (dist / length));
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return pcurrent;
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}
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else
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{
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dist -= length;
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currentPos = pcurrent->GetNext()->pev->origin;
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pcurrent = pcurrent->GetNext();
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*origin = currentPos;
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}
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}
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*origin = currentPos;
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}
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return pcurrent;
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}
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CPathTrack *CPathTrack::Nearest(Vector origin)
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{
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Vector delta = origin - pev->origin;
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delta.z = 0;
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float minDist = delta.Length();
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CPathTrack *pnearest = this;
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CPathTrack *ppath = GetNext();
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int deadCount = 0;
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while (ppath && ppath !=this)
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{
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deadCount++;
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if (deadCount > 9999)
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{
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ALERT(at_error, "Bad sequence of path_tracks from %s", STRING(pev->targetname));
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return NULL;
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}
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delta = origin - ppath->pev->origin;
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delta.z = 0;
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float dist = delta.Length();
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if (dist < minDist)
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{
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minDist = dist;
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pnearest = ppath;
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}
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ppath = ppath->GetNext();
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}
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return pnearest;
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}
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CPathTrack *CPathTrack::Instance(edict_t *pent)
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{
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if (FClassnameIs(pent, "path_track"))
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return (CPathTrack *)GET_PRIVATE(pent);
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return NULL;
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} |