halflife-sdk/dlls/tripmine.cpp

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/***
*
2002-12-23 00:00:00 +00:00
* Copyright (c) 1996-2002, Valve LLC. All rights reserved.
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*
* This product contains software technology licensed from Id
* Software, Inc. ("Id Technology"). Id Technology (c) 1996 Id Software, Inc.
* All Rights Reserved.
*
* Use, distribution, and modification of this source code and/or resulting
* object code is restricted to non-commercial enhancements to products from
* Valve LLC. All other use, distribution, or modification is prohibited
* without written permission from Valve LLC.
*
****/
#include "extdll.h"
#include "util.h"
#include "cbase.h"
#include "monsters.h"
#include "weapons.h"
#include "nodes.h"
#include "player.h"
#include "effects.h"
#include "gamerules.h"
#define TRIPMINE_PRIMARY_VOLUME 450
enum tripmine_e {
TRIPMINE_IDLE1 = 0,
TRIPMINE_IDLE2,
TRIPMINE_ARM1,
TRIPMINE_ARM2,
TRIPMINE_FIDGET,
TRIPMINE_HOLSTER,
TRIPMINE_DRAW,
TRIPMINE_WORLD,
TRIPMINE_GROUND,
};
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#ifndef CLIENT_DLL
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class CTripmineGrenade : public CGrenade
{
void Spawn( void );
void Precache( void );
virtual int Save( CSave &save );
virtual int Restore( CRestore &restore );
static TYPEDESCRIPTION m_SaveData[];
int TakeDamage( entvars_t *pevInflictor, entvars_t *pevAttacker, float flDamage, int bitsDamageType );
void EXPORT WarningThink( void );
void EXPORT PowerupThink( void );
void EXPORT BeamBreakThink( void );
void EXPORT DelayDeathThink( void );
void Killed( entvars_t *pevAttacker, int iGib );
void MakeBeam( void );
void KillBeam( void );
float m_flPowerUp;
Vector m_vecDir;
Vector m_vecEnd;
float m_flBeamLength;
EHANDLE m_hOwner;
CBeam *m_pBeam;
Vector m_posOwner;
Vector m_angleOwner;
edict_t *m_pRealOwner;// tracelines don't hit PEV->OWNER, which means a player couldn't detonate his own trip mine, so we store the owner here.
};
LINK_ENTITY_TO_CLASS( monster_tripmine, CTripmineGrenade );
TYPEDESCRIPTION CTripmineGrenade::m_SaveData[] =
{
DEFINE_FIELD( CTripmineGrenade, m_flPowerUp, FIELD_TIME ),
DEFINE_FIELD( CTripmineGrenade, m_vecDir, FIELD_VECTOR ),
DEFINE_FIELD( CTripmineGrenade, m_vecEnd, FIELD_POSITION_VECTOR ),
DEFINE_FIELD( CTripmineGrenade, m_flBeamLength, FIELD_FLOAT ),
DEFINE_FIELD( CTripmineGrenade, m_hOwner, FIELD_EHANDLE ),
DEFINE_FIELD( CTripmineGrenade, m_pBeam, FIELD_CLASSPTR ),
DEFINE_FIELD( CTripmineGrenade, m_posOwner, FIELD_POSITION_VECTOR ),
DEFINE_FIELD( CTripmineGrenade, m_angleOwner, FIELD_VECTOR ),
DEFINE_FIELD( CTripmineGrenade, m_pRealOwner, FIELD_EDICT ),
};
IMPLEMENT_SAVERESTORE(CTripmineGrenade,CGrenade);
void CTripmineGrenade :: Spawn( void )
{
Precache( );
// motor
pev->movetype = MOVETYPE_FLY;
pev->solid = SOLID_NOT;
SET_MODEL(ENT(pev), "models/v_tripmine.mdl");
pev->frame = 0;
pev->body = 3;
pev->sequence = TRIPMINE_WORLD;
ResetSequenceInfo( );
pev->framerate = 0;
UTIL_SetSize(pev, Vector( -8, -8, -8), Vector(8, 8, 8));
UTIL_SetOrigin( pev, pev->origin );
if (pev->spawnflags & 1)
{
// power up quickly
m_flPowerUp = gpGlobals->time + 1.0;
}
else
{
// power up in 2.5 seconds
m_flPowerUp = gpGlobals->time + 2.5;
}
SetThink( PowerupThink );
pev->nextthink = gpGlobals->time + 0.2;
pev->takedamage = DAMAGE_YES;
pev->dmg = gSkillData.plrDmgTripmine;
pev->health = 1; // don't let die normally
if (pev->owner != NULL)
{
// play deploy sound
EMIT_SOUND( ENT(pev), CHAN_VOICE, "weapons/mine_deploy.wav", 1.0, ATTN_NORM );
EMIT_SOUND( ENT(pev), CHAN_BODY, "weapons/mine_charge.wav", 0.2, ATTN_NORM ); // chargeup
m_pRealOwner = pev->owner;// see CTripmineGrenade for why.
}
UTIL_MakeAimVectors( pev->angles );
m_vecDir = gpGlobals->v_forward;
m_vecEnd = pev->origin + m_vecDir * 2048;
}
void CTripmineGrenade :: Precache( void )
{
PRECACHE_MODEL("models/v_tripmine.mdl");
PRECACHE_SOUND("weapons/mine_deploy.wav");
PRECACHE_SOUND("weapons/mine_activate.wav");
PRECACHE_SOUND("weapons/mine_charge.wav");
}
void CTripmineGrenade :: WarningThink( void )
{
// play warning sound
// EMIT_SOUND( ENT(pev), CHAN_VOICE, "buttons/Blip2.wav", 1.0, ATTN_NORM );
// set to power up
SetThink( PowerupThink );
pev->nextthink = gpGlobals->time + 1.0;
}
void CTripmineGrenade :: PowerupThink( void )
{
TraceResult tr;
if (m_hOwner == NULL)
{
// find an owner
edict_t *oldowner = pev->owner;
pev->owner = NULL;
UTIL_TraceLine( pev->origin + m_vecDir * 8, pev->origin - m_vecDir * 32, dont_ignore_monsters, ENT( pev ), &tr );
if (tr.fStartSolid || (oldowner && tr.pHit == oldowner))
{
pev->owner = oldowner;
m_flPowerUp += 0.1;
pev->nextthink = gpGlobals->time + 0.1;
return;
}
if (tr.flFraction < 1.0)
{
pev->owner = tr.pHit;
m_hOwner = CBaseEntity::Instance( pev->owner );
m_posOwner = m_hOwner->pev->origin;
m_angleOwner = m_hOwner->pev->angles;
}
else
{
STOP_SOUND( ENT(pev), CHAN_VOICE, "weapons/mine_deploy.wav" );
STOP_SOUND( ENT(pev), CHAN_BODY, "weapons/mine_charge.wav" );
SetThink( SUB_Remove );
pev->nextthink = gpGlobals->time + 0.1;
ALERT( at_console, "WARNING:Tripmine at %.0f, %.0f, %.0f removed\n", pev->origin.x, pev->origin.y, pev->origin.z );
KillBeam();
return;
}
}
else if (m_posOwner != m_hOwner->pev->origin || m_angleOwner != m_hOwner->pev->angles)
{
// disable
STOP_SOUND( ENT(pev), CHAN_VOICE, "weapons/mine_deploy.wav" );
STOP_SOUND( ENT(pev), CHAN_BODY, "weapons/mine_charge.wav" );
CBaseEntity *pMine = Create( "weapon_tripmine", pev->origin + m_vecDir * 24, pev->angles );
pMine->pev->spawnflags |= SF_NORESPAWN;
SetThink( SUB_Remove );
KillBeam();
pev->nextthink = gpGlobals->time + 0.1;
return;
}
// ALERT( at_console, "%d %.0f %.0f %0.f\n", pev->owner, m_pOwner->pev->origin.x, m_pOwner->pev->origin.y, m_pOwner->pev->origin.z );
if (gpGlobals->time > m_flPowerUp)
{
// make solid
pev->solid = SOLID_BBOX;
UTIL_SetOrigin( pev, pev->origin );
MakeBeam( );
// play enabled sound
EMIT_SOUND_DYN( ENT(pev), CHAN_VOICE, "weapons/mine_activate.wav", 0.5, ATTN_NORM, 1.0, 75 );
}
pev->nextthink = gpGlobals->time + 0.1;
}
void CTripmineGrenade :: KillBeam( void )
{
if ( m_pBeam )
{
UTIL_Remove( m_pBeam );
m_pBeam = NULL;
}
}
void CTripmineGrenade :: MakeBeam( void )
{
TraceResult tr;
// ALERT( at_console, "serverflags %f\n", gpGlobals->serverflags );
UTIL_TraceLine( pev->origin, m_vecEnd, dont_ignore_monsters, ENT( pev ), &tr );
m_flBeamLength = tr.flFraction;
// set to follow laser spot
SetThink( BeamBreakThink );
pev->nextthink = gpGlobals->time + 0.1;
Vector vecTmpEnd = pev->origin + m_vecDir * 2048 * m_flBeamLength;
m_pBeam = CBeam::BeamCreate( g_pModelNameLaser, 10 );
m_pBeam->PointEntInit( vecTmpEnd, entindex() );
m_pBeam->SetColor( 0, 214, 198 );
m_pBeam->SetScrollRate( 255 );
m_pBeam->SetBrightness( 64 );
}
void CTripmineGrenade :: BeamBreakThink( void )
{
BOOL bBlowup = 0;
TraceResult tr;
// HACKHACK Set simple box using this really nice global!
gpGlobals->trace_flags = FTRACE_SIMPLEBOX;
UTIL_TraceLine( pev->origin, m_vecEnd, dont_ignore_monsters, ENT( pev ), &tr );
// ALERT( at_console, "%f : %f\n", tr.flFraction, m_flBeamLength );
// respawn detect.
if ( !m_pBeam )
{
MakeBeam( );
if ( tr.pHit )
m_hOwner = CBaseEntity::Instance( tr.pHit ); // reset owner too
}
if (fabs( m_flBeamLength - tr.flFraction ) > 0.001)
{
bBlowup = 1;
}
else
{
if (m_hOwner == NULL)
bBlowup = 1;
else if (m_posOwner != m_hOwner->pev->origin)
bBlowup = 1;
else if (m_angleOwner != m_hOwner->pev->angles)
bBlowup = 1;
}
if (bBlowup)
{
// a bit of a hack, but all CGrenade code passes pev->owner along to make sure the proper player gets credit for the kill
// so we have to restore pev->owner from pRealOwner, because an entity's tracelines don't strike it's pev->owner which meant
// that a player couldn't trigger his own tripmine. Now that the mine is exploding, it's safe the restore the owner so the
// CGrenade code knows who the explosive really belongs to.
pev->owner = m_pRealOwner;
pev->health = 0;
Killed( VARS( pev->owner ), GIB_NORMAL );
return;
}
pev->nextthink = gpGlobals->time + 0.1;
}
int CTripmineGrenade :: TakeDamage( entvars_t *pevInflictor, entvars_t *pevAttacker, float flDamage, int bitsDamageType )
{
if (gpGlobals->time < m_flPowerUp && flDamage < pev->health)
{
// disable
// Create( "weapon_tripmine", pev->origin + m_vecDir * 24, pev->angles );
SetThink( SUB_Remove );
pev->nextthink = gpGlobals->time + 0.1;
KillBeam();
return FALSE;
}
return CGrenade::TakeDamage( pevInflictor, pevAttacker, flDamage, bitsDamageType );
}
void CTripmineGrenade::Killed( entvars_t *pevAttacker, int iGib )
{
pev->takedamage = DAMAGE_NO;
if ( pevAttacker && ( pevAttacker->flags & FL_CLIENT ) )
{
// some client has destroyed this mine, he'll get credit for any kills
pev->owner = ENT( pevAttacker );
}
SetThink( DelayDeathThink );
pev->nextthink = gpGlobals->time + RANDOM_FLOAT( 0.1, 0.3 );
EMIT_SOUND( ENT(pev), CHAN_BODY, "common/null.wav", 0.5, ATTN_NORM ); // shut off chargeup
}
void CTripmineGrenade::DelayDeathThink( void )
{
KillBeam();
TraceResult tr;
UTIL_TraceLine ( pev->origin + m_vecDir * 8, pev->origin - m_vecDir * 64, dont_ignore_monsters, ENT(pev), & tr);
Explode( &tr, DMG_BLAST );
}
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#endif
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LINK_ENTITY_TO_CLASS( weapon_tripmine, CTripmine );
void CTripmine::Spawn( )
{
Precache( );
m_iId = WEAPON_TRIPMINE;
SET_MODEL(ENT(pev), "models/v_tripmine.mdl");
pev->frame = 0;
pev->body = 3;
pev->sequence = TRIPMINE_GROUND;
// ResetSequenceInfo( );
pev->framerate = 0;
FallInit();// get ready to fall down
m_iDefaultAmmo = TRIPMINE_DEFAULT_GIVE;
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#ifdef CLIENT_DLL
if ( !bIsMultiplayer() )
#else
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if ( !g_pGameRules->IsDeathmatch() )
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#endif
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{
UTIL_SetSize(pev, Vector(-16, -16, 0), Vector(16, 16, 28) );
}
}
void CTripmine::Precache( void )
{
PRECACHE_MODEL ("models/v_tripmine.mdl");
PRECACHE_MODEL ("models/p_tripmine.mdl");
UTIL_PrecacheOther( "monster_tripmine" );
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m_usTripFire = PRECACHE_EVENT( 1, "events/tripfire.sc" );
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}
int CTripmine::GetItemInfo(ItemInfo *p)
{
p->pszName = STRING(pev->classname);
p->pszAmmo1 = "Trip Mine";
p->iMaxAmmo1 = TRIPMINE_MAX_CARRY;
p->pszAmmo2 = NULL;
p->iMaxAmmo2 = -1;
p->iMaxClip = WEAPON_NOCLIP;
p->iSlot = 4;
p->iPosition = 2;
p->iId = m_iId = WEAPON_TRIPMINE;
p->iWeight = TRIPMINE_WEIGHT;
p->iFlags = ITEM_FLAG_LIMITINWORLD | ITEM_FLAG_EXHAUSTIBLE;
return 1;
}
BOOL CTripmine::Deploy( )
{
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//pev->body = 0;
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return DefaultDeploy( "models/v_tripmine.mdl", "models/p_tripmine.mdl", TRIPMINE_DRAW, "trip" );
}
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void CTripmine::Holster( int skiplocal /* = 0 */ )
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{
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m_pPlayer->m_flNextAttack = UTIL_WeaponTimeBase() + 0.5;
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if (!m_pPlayer->m_rgAmmo[m_iPrimaryAmmoType])
{
// out of mines
m_pPlayer->pev->weapons &= ~(1<<WEAPON_TRIPMINE);
SetThink( DestroyItem );
pev->nextthink = gpGlobals->time + 0.1;
}
SendWeaponAnim( TRIPMINE_HOLSTER );
EMIT_SOUND(ENT(m_pPlayer->pev), CHAN_WEAPON, "common/null.wav", 1.0, ATTN_NORM);
}
void CTripmine::PrimaryAttack( void )
{
if (m_pPlayer->m_rgAmmo[m_iPrimaryAmmoType] <= 0)
return;
UTIL_MakeVectors( m_pPlayer->pev->v_angle + m_pPlayer->pev->punchangle );
Vector vecSrc = m_pPlayer->GetGunPosition( );
Vector vecAiming = gpGlobals->v_forward;
TraceResult tr;
UTIL_TraceLine( vecSrc, vecSrc + vecAiming * 128, dont_ignore_monsters, ENT( m_pPlayer->pev ), &tr );
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int flags;
#ifdef CLIENT_WEAPONS
flags = FEV_NOTHOST;
#else
flags = 0;
#endif
PLAYBACK_EVENT_FULL( flags, m_pPlayer->edict(), m_usTripFire, 0.0, (float *)&g_vecZero, (float *)&g_vecZero, 0.0, 0.0, 0, 0, 0, 0 );
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if (tr.flFraction < 1.0)
{
CBaseEntity *pEntity = CBaseEntity::Instance( tr.pHit );
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if ( pEntity && !(pEntity->pev->flags & FL_CONVEYOR) )
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{
Vector angles = UTIL_VecToAngles( tr.vecPlaneNormal );
CBaseEntity *pEnt = CBaseEntity::Create( "monster_tripmine", tr.vecEndPos + tr.vecPlaneNormal * 8, angles, m_pPlayer->edict() );
m_pPlayer->m_rgAmmo[m_iPrimaryAmmoType]--;
// player "shoot" animation
m_pPlayer->SetAnimation( PLAYER_ATTACK1 );
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if ( m_pPlayer->m_rgAmmo[m_iPrimaryAmmoType] <= 0 )
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{
// no more mines!
RetireWeapon();
return;
}
}
else
{
// ALERT( at_console, "no deploy\n" );
}
}
else
{
}
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m_flNextPrimaryAttack = UTIL_WeaponTimeBase() + 0.3;
m_flTimeWeaponIdle = UTIL_WeaponTimeBase() + UTIL_SharedRandomFloat( m_pPlayer->random_seed, 10, 15 );
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}
void CTripmine::WeaponIdle( void )
{
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if ( m_flTimeWeaponIdle > UTIL_WeaponTimeBase() )
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return;
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if ( m_pPlayer->m_rgAmmo[m_iPrimaryAmmoType] > 0 )
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{
SendWeaponAnim( TRIPMINE_DRAW );
}
else
{
RetireWeapon();
return;
}
int iAnim;
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float flRand = UTIL_SharedRandomFloat( m_pPlayer->random_seed, 0, 1 );
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if (flRand <= 0.25)
{
iAnim = TRIPMINE_IDLE1;
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m_flTimeWeaponIdle = UTIL_WeaponTimeBase() + 90.0 / 30.0;
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}
else if (flRand <= 0.75)
{
iAnim = TRIPMINE_IDLE2;
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m_flTimeWeaponIdle = UTIL_WeaponTimeBase() + 60.0 / 30.0;
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}
else
{
iAnim = TRIPMINE_FIDGET;
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m_flTimeWeaponIdle = UTIL_WeaponTimeBase() + 100.0 / 30.0;
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}
SendWeaponAnim( iAnim );
}