331 lines
9.1 KiB
C++
331 lines
9.1 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: This is the brickbat weapon
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//
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// $NoKeywords: $
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//=============================================================================//
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#include "cbase.h"
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#include "grenade_pathfollower.h"
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#include "soundent.h"
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#include "decals.h"
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#include "shake.h"
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#include "smoke_trail.h"
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#include "entitylist.h"
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#include "vstdlib/random.h"
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#include "engine/IEngineSound.h"
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// memdbgon must be the last include file in a .cpp file!!!
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#include "tier0/memdbgon.h"
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#define GRENADE_PF_TURN_RATE 30
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#define GRENADE_PF_TOLERANCE 300
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#define GRENADE_PF_MODEL "models/Weapons/w_missile.mdl"
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extern short g_sModelIndexFireball; // (in combatweapon.cpp) holds the index for the smoke cloud
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ConVar sk_dmg_pathfollower_grenade ( "sk_dmg_pathfollower_grenade","0");
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ConVar sk_pathfollower_grenade_radius ( "sk_pathfollower_grenade_radius","0");
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BEGIN_DATADESC( CGrenadePathfollower )
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DEFINE_FIELD( m_pPathTarget, FIELD_CLASSPTR ),
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DEFINE_FIELD( m_flFlySpeed, FIELD_FLOAT ),
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DEFINE_FIELD( m_sFlySound, FIELD_SOUNDNAME ),
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DEFINE_FIELD( m_flNextFlySoundTime, FIELD_TIME),
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DEFINE_FIELD( m_hRocketTrail, FIELD_EHANDLE),
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DEFINE_THINKFUNC( AimThink ),
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// Function pointers
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DEFINE_ENTITYFUNC( GrenadeTouch ),
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END_DATADESC()
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LINK_ENTITY_TO_CLASS( grenade_pathfollower, CGrenadePathfollower );
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void CGrenadePathfollower::Precache()
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{
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BaseClass::Precache();
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PrecacheScriptSound( "GrenadePathfollower.StopSounds" );
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}
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void CGrenadePathfollower::Spawn( void )
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{
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Precache( );
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// -------------------------
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// Inert when first spawned
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// -------------------------
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SetSolid( SOLID_BBOX );
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AddSolidFlags( FSOLID_NOT_SOLID );
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SetMoveType( MOVETYPE_NONE );
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AddFlag( FL_OBJECT ); // So can be shot down
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AddEffects( EF_NODRAW );
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UTIL_SetSize(this, Vector(0, 0, 0), Vector(0, 0, 0));
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m_flDamage = sk_dmg_pathfollower_grenade.GetFloat();
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m_DmgRadius = sk_pathfollower_grenade_radius.GetFloat();
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m_takedamage = DAMAGE_YES;
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m_iHealth = 200;
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SetGravity( 0.00001 );
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SetFriction( 0.8 );
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SetSequence( 1 );
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}
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void CGrenadePathfollower::Event_Killed( const CTakeDamageInfo &info )
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{
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Detonate( );
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}
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void CGrenadePathfollower::GrenadeTouch( CBaseEntity *pOther )
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{
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// ----------------------------------
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// If I hit the sky, don't explode
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// ----------------------------------
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trace_t tr;
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UTIL_TraceLine ( GetAbsOrigin(), GetAbsOrigin() + GetAbsVelocity(), MASK_SOLID_BRUSHONLY,
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this, COLLISION_GROUP_NONE, &tr);
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if (tr.surface.flags & SURF_SKY)
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{
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if(m_hRocketTrail)
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{
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UTIL_Remove(m_hRocketTrail);
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m_hRocketTrail = NULL;
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}
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UTIL_Remove( this );
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}
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Detonate();
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}
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//------------------------------------------------------------------------------
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// Purpose :
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// Input :
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// Output :
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//------------------------------------------------------------------------------
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void CGrenadePathfollower::Detonate(void)
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{
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StopSound(entindex(), CHAN_BODY, STRING(m_sFlySound));
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m_takedamage = DAMAGE_NO;
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if(m_hRocketTrail)
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{
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UTIL_Remove(m_hRocketTrail);
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m_hRocketTrail = NULL;
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}
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CPASFilter filter( GetAbsOrigin() );
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te->Explosion( filter, 0.0,
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&GetAbsOrigin(),
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g_sModelIndexFireball,
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0.5,
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15,
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TE_EXPLFLAG_NONE,
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m_DmgRadius,
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m_flDamage );
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Vector vecForward = GetAbsVelocity();
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VectorNormalize(vecForward);
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trace_t tr;
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UTIL_TraceLine ( GetAbsOrigin(), GetAbsOrigin() + 60*vecForward, MASK_SOLID_BRUSHONLY, this, COLLISION_GROUP_NONE, & tr);
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UTIL_DecalTrace( &tr, "Scorch" );
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UTIL_ScreenShake( GetAbsOrigin(), 25.0, 150.0, 1.0, 750, SHAKE_START );
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CSoundEnt::InsertSound ( SOUND_DANGER, GetAbsOrigin(), 400, 0.2 );
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RadiusDamage ( CTakeDamageInfo( this, GetThrower(), m_flDamage, DMG_BLAST ), GetAbsOrigin(), m_DmgRadius, CLASS_NONE, NULL );
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CPASAttenuationFilter filter2( this, "GrenadePathfollower.StopSounds" );
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EmitSound( filter2, entindex(), "GrenadePathfollower.StopSounds" );
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UTIL_Remove( this );
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}
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//------------------------------------------------------------------------------
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// Purpose :
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// Input :
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// Output :
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//------------------------------------------------------------------------------
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void CGrenadePathfollower::Launch( float flLaunchSpeed, string_t sPathCornerName)
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{
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m_pPathTarget = gEntList.FindEntityByName( NULL, sPathCornerName );
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if (m_pPathTarget)
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{
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m_flFlySpeed = flLaunchSpeed;
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Vector vTargetDir = (m_pPathTarget->GetAbsOrigin() - GetAbsOrigin());
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VectorNormalize(vTargetDir);
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SetAbsVelocity( m_flFlySpeed * vTargetDir );
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QAngle angles;
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VectorAngles( GetAbsVelocity(), angles );
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SetLocalAngles( angles );
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}
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else
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{
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Warning( "ERROR: Grenade_Pathfollower (%s) with no pathcorner!\n",GetDebugName());
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return;
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}
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// Make this thing come to life
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RemoveSolidFlags( FSOLID_NOT_SOLID );
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SetMoveType( MOVETYPE_FLYGRAVITY );
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RemoveEffects( EF_NODRAW );
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SetUse( &CGrenadePathfollower::DetonateUse );
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SetTouch( &CGrenadePathfollower::GrenadeTouch );
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SetThink( &CGrenadePathfollower::AimThink );
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SetNextThink( gpGlobals->curtime + 0.1f );
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// Make the trail
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m_hRocketTrail = RocketTrail::CreateRocketTrail();
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if ( m_hRocketTrail )
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{
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m_hRocketTrail->m_Opacity = 0.2f;
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m_hRocketTrail->m_SpawnRate = 100;
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m_hRocketTrail->m_ParticleLifetime = 0.5f;
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m_hRocketTrail->m_StartColor.Init( 0.65f, 0.65f , 0.65f );
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m_hRocketTrail->m_EndColor.Init( 0.0, 0.0, 0.0 );
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m_hRocketTrail->m_StartSize = 8;
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m_hRocketTrail->m_EndSize = 16;
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m_hRocketTrail->m_SpawnRadius = 4;
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m_hRocketTrail->m_MinSpeed = 2;
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m_hRocketTrail->m_MaxSpeed = 16;
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m_hRocketTrail->SetLifetime( 999 );
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m_hRocketTrail->FollowEntity( this, "0" );
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input :
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// Output :
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//-----------------------------------------------------------------------------
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void CGrenadePathfollower::PlayFlySound(void)
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{
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if (gpGlobals->curtime > m_flNextFlySoundTime)
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{
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CPASAttenuationFilter filter( this, 0.8 );
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EmitSound_t ep;
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ep.m_nChannel = CHAN_BODY;
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ep.m_pSoundName = STRING(m_sFlySound);
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ep.m_flVolume = 1.0f;
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ep.m_SoundLevel = SNDLVL_NORM;
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EmitSound( filter, entindex(), ep );
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m_flNextFlySoundTime = gpGlobals->curtime + 1.0;
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}
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}
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//------------------------------------------------------------------------------
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// Purpose :
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// Input :
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// Output :
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//------------------------------------------------------------------------------
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void CGrenadePathfollower::AimThink( void )
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{
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PlayFlySound();
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// ---------------------------------------------------
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// Check if it's time to skip to the next path corner
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// ---------------------------------------------------
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if (m_pPathTarget)
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{
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float flLength = (GetAbsOrigin() - m_pPathTarget->GetAbsOrigin()).Length();
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if (flLength < GRENADE_PF_TOLERANCE)
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{
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m_pPathTarget = gEntList.FindEntityByName( NULL, m_pPathTarget->m_target );
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if (!m_pPathTarget)
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{
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SetGravity( 1.0 );
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}
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}
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}
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// --------------------------------------------------
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// If I have a pathcorner, aim towards it
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// --------------------------------------------------
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if (m_pPathTarget)
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{
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Vector vTargetDir = (m_pPathTarget->GetAbsOrigin() - GetAbsOrigin());
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VectorNormalize(vTargetDir);
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Vector vecNewVelocity = GetAbsVelocity();
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VectorNormalize(vecNewVelocity);
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float flTimeToUse = gpGlobals->frametime;
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while (flTimeToUse > 0)
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{
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vecNewVelocity += vTargetDir;
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flTimeToUse = -0.1;
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}
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vecNewVelocity *= m_flFlySpeed;
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SetAbsVelocity( vecNewVelocity );
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}
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QAngle angles;
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VectorAngles( GetAbsVelocity(), angles );
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SetLocalAngles( angles );
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SetNextThink( gpGlobals->curtime + 0.1f );
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}
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//------------------------------------------------------------------------------
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// Purpose :
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// Input :
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// Output :
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//------------------------------------------------------------------------------
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Class_T CGrenadePathfollower::Classify( void)
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{
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return CLASS_MISSILE;
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};
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CGrenadePathfollower::CGrenadePathfollower(void)
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{
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m_hRocketTrail = NULL;
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}
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//------------------------------------------------------------------------------
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// Purpose : In case somehow we get removed w/o detonating, make sure
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// we stop making sounds
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// Input :
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// Output :
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//------------------------------------------------------------------------------
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CGrenadePathfollower::~CGrenadePathfollower(void)
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{
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StopSound(entindex(), CHAN_BODY, STRING(m_sFlySound));
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}
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///------------------------------------------------------------------------------
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// Purpose :
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// Input :
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// Output :
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//------------------------------------------------------------------------------
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CGrenadePathfollower* CGrenadePathfollower::CreateGrenadePathfollower( string_t sModelName, string_t sFlySound, const Vector &vecOrigin, const QAngle &vecAngles, edict_t *pentOwner )
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{
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CGrenadePathfollower *pGrenade = (CGrenadePathfollower*)CreateEntityByName( "grenade_pathfollower" );
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if ( !pGrenade )
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{
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Warning( "NULL Ent in CGrenadePathfollower!\n" );
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return NULL;
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}
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if ( pGrenade->edict() )
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{
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pGrenade->m_sFlySound = sFlySound;
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pGrenade->SetOwnerEntity( Instance( pentOwner ) );
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pGrenade->SetLocalOrigin( vecOrigin );
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pGrenade->SetLocalAngles( vecAngles );
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pGrenade->SetModel( STRING(sModelName) );
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pGrenade->Spawn();
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}
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return pGrenade;
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}
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