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428 lines
9.7 KiB
428 lines
9.7 KiB
/*** |
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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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// |
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// ========================== PATH_CORNER =========================== |
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// |
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#include "extdll.h" |
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#include "util.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( ); |
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void KeyValue( KeyValueData* pkvd ); |
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float GetDelay( void ) { return m_flWait; } |
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// void Touch( CBaseEntity *pOther ); |
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virtual int Save( CSave &save ); |
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virtual int Restore( CRestore &restore ); |
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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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// Global Savedata for Delay |
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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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// |
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// Cache user-entity-field values until spawn is called. |
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// |
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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( ) |
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{ |
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ASSERTSZ(!FStringNull(pev->targetname), "path_corner without a targetname"); |
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} |
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#if 0 |
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void CPathCorner :: Touch( CBaseEntity *pOther ) |
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{ |
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entvars_t* pevToucher = pOther->pev; |
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if ( FBitSet ( pevToucher->flags, FL_MONSTER ) ) |
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{// monsters don't navigate path corners based on touch anymore |
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return; |
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} |
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// If OTHER isn't explicitly looking for this path_corner, bail out |
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if ( pOther->m_pGoalEnt != this ) |
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{ |
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return; |
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} |
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// If OTHER has an enemy, this touch is incidental, ignore |
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if ( !FNullEnt(pevToucher->enemy) ) |
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{ |
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return; // fighting, not following a path |
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} |
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// UNDONE: support non-zero flWait |
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/* |
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if (m_flWait != 0) |
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ALERT(at_warning, "Non-zero path-cornder waits NYI"); |
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*/ |
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// Find the next "stop" on the path, make it the goal of the "toucher". |
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if (FStringNull(pev->target)) |
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{ |
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ALERT(at_warning, "PathCornerTouch: no next stop specified"); |
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} |
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pOther->m_pGoalEnt = CBaseEntity::Instance( FIND_ENTITY_BY_TARGETNAME ( NULL, STRING(pev->target) ) ); |
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// If "next spot" was not found (does not exist - level design error) |
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if ( !pOther->m_pGoalEnt ) |
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{ |
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ALERT(at_console, "PathCornerTouch--%s couldn't find next stop in path: %s", STRING(pev->classname), STRING(pev->target)); |
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return; |
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} |
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// Turn towards the next stop in the path. |
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pevToucher->ideal_yaw = UTIL_VecToYaw ( pOther->m_pGoalEnt->pev->origin - pevToucher->origin ); |
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} |
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#endif |
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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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// |
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// Cache user-entity-field values until spawn is called. |
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// |
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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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int on; |
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// Use toggles between two paths |
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if ( m_paltpath ) |
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{ |
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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 // Use toggles between enabled/disabled |
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{ |
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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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edict_t *pentTarget; |
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if ( !FStringNull(pev->target) ) |
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{ |
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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 ) // If no next pointer, this is the end of a path |
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{ |
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m_pnext->SetPrevious( this ); |
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} |
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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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// Find "alternate" path |
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if ( m_altName ) |
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{ |
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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 ) // If no next pointer, this is the end of a path |
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{ |
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m_paltpath->SetPrevious( this ); |
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} |
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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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// DEBUGGING CODE |
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#if PATH_SPARKLE_DEBUG |
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SetThink( &Sparkle ); |
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pev->nextthink = gpGlobals->time + 0.5; |
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#endif |
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} |
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void CPathTrack::Activate( void ) |
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{ |
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if ( !FStringNull( pev->targetname ) ) // Link to next, and back-link |
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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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// Only set previous if this isn't my alternate path |
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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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// Assumes this is ALWAYS enabled |
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CPathTrack *CPathTrack :: LookAhead( Vector *origin, float dist, int move ) |
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{ |
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CPathTrack *pcurrent; |
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float originalDist = dist; |
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pcurrent = this; |
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Vector currentPos = *origin; |
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if ( dist < 0 ) // Travelling backwards through path |
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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) ) // If there is no previous node, or it's disabled, return now. |
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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 ) // enough left in this path to move |
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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) ) // If there is no previous node, or it's disabled, return now. |
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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) ) // If there is no next node, or it's disabled, return now. |
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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 ) // HACK -- up against a dead end |
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return NULL; |
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return pcurrent; |
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} |
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if ( length > dist ) // enough left in this path to move |
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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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// Assumes this is ALWAYS enabled |
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CPathTrack *CPathTrack :: Nearest( Vector origin ) |
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{ |
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int deadCount; |
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float minDist, dist; |
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Vector delta; |
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CPathTrack *ppath, *pnearest; |
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delta = origin - pev->origin; |
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delta.z = 0; |
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minDist = delta.Length(); |
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pnearest = this; |
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ppath = GetNext(); |
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// Hey, I could use the old 2 racing pointers solution to this, but I'm lazy :) |
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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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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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} |
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// DEBUGGING CODE |
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#if PATH_SPARKLE_DEBUG |
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void CPathTrack :: Sparkle( void ) |
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{ |
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pev->nextthink = gpGlobals->time + 0.2; |
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if ( FBitSet( pev->spawnflags, SF_PATH_DISABLED ) ) |
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UTIL_ParticleEffect(pev->origin, Vector(0,0,100), 210, 10); |
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else |
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UTIL_ParticleEffect(pev->origin, Vector(0,0,100), 84, 10); |
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} |
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#endif |
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