1 files changed, 526 insertions, 0 deletions
diff --git a/game/server/dod/dod_basegrenade.cpp b/game/server/dod/dod_basegrenade.cpp
new file mode 100644
index 0000000..9420a08
--- /dev/null
+++ b/game/server/dod/dod_basegrenade.cpp
@@ -0,0 +1,526 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#include "cbase.h"
+#include "dod_basegrenade.h"
+#include "dod_player.h"
+#include "dod_gamerules.h"
+#include "func_break.h"
+#include "physics_saverestore.h"
+#include "grenadetrail.h"
+#include "fx_dod_shared.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+float GetCurrentGravity( void );
+
+ConVar dod_grenadegravity( "dod_grenadegravity", "-420", FCVAR_CHEAT, "gravity applied to grenades", true, -2000, true, -300 );
+extern ConVar dod_bonusround;
+
+IMotionEvent::simresult_e	CGrenadeController::Simulate( IPhysicsMotionController *pController, IPhysicsObject *pObject, float deltaTime, Vector &linear, AngularImpulse &angular )
+{
+	linear.x = linear.y = 0;
+	linear.z = dod_grenadegravity.GetFloat();
+
+	angular.x = angular.y = angular.z = 0;
+
+	return SIM_GLOBAL_ACCELERATION;
+}
+
+BEGIN_SIMPLE_DATADESC( CGrenadeController )
+END_DATADESC()
+
+BEGIN_DATADESC( CDODBaseGrenade )
+
+	DEFINE_THINKFUNC( DetonateThink ),
+	
+	DEFINE_EMBEDDED( m_GrenadeController ),
+	DEFINE_PHYSPTR( m_pMotionController ),	// probably not necessary
+	
+END_DATADESC()
+
+IMPLEMENT_SERVERCLASS_ST( CDODBaseGrenade, DT_DODBaseGrenade )
+	SendPropVector( SENDINFO( m_vInitialVelocity ), 
+				20,		// nbits
+				0,		// flags
+				-3000,	// low value
+				3000	// high value
+				)
+END_SEND_TABLE()
+
+CDODBaseGrenade::CDODBaseGrenade()
+{
+}
+
+CDODBaseGrenade::~CDODBaseGrenade( void )
+{
+	if ( m_pMotionController != NULL )
+	{
+		physenv->DestroyMotionController( m_pMotionController );
+		m_pMotionController = NULL;
+	}
+}
+
+void CDODBaseGrenade::Spawn( void )
+{
+	m_bUseVPhysics = true;
+
+	BaseClass::Spawn();
+	
+	SetSolid( SOLID_BBOX );	// So it will collide with physics props!
+
+	UTIL_SetSize( this, Vector(-4,-4,-4), Vector(4,4,4) );
+
+	if( m_bUseVPhysics )
+	{		 
+		SetCollisionGroup( COLLISION_GROUP_WEAPON );
+		IPhysicsObject *pPhysicsObject = VPhysicsInitNormal( SOLID_BBOX, 0, false );
+
+		if ( pPhysicsObject )
+		{
+			m_pMotionController = physenv->CreateMotionController( &m_GrenadeController );
+			m_pMotionController->AttachObject( pPhysicsObject, true );
+
+			pPhysicsObject->EnableGravity( false );
+		}
+		
+		m_takedamage	= DAMAGE_EVENTS_ONLY;
+	}
+	else
+	{
+		SetMoveType( MOVETYPE_FLYGRAVITY, MOVECOLLIDE_FLY_CUSTOM );
+		m_takedamage	= DAMAGE_NO;
+	}
+
+	AddSolidFlags( FSOLID_NOT_STANDABLE );
+
+	m_iHealth		= 1;
+	
+	SetFriction( GetGrenadeFriction() );
+	SetElasticity( GetGrenadeElasticity() );
+
+	// Remember our owner's team
+	ChangeTeam( GetThrower()->GetTeamNumber() );
+
+	m_flDamage = 150;
+	m_DmgRadius = m_flDamage * 2.5f;
+
+	// Don't collide with players on the owner's team for the first bit of our life
+	m_flCollideWithTeammatesTime = gpGlobals->curtime + 0.25;
+	m_bCollideWithTeammates = false;
+
+	SetThink( &CDODBaseGrenade::DetonateThink );
+	SetNextThink( gpGlobals->curtime + 0.1 );
+}
+
+void CDODBaseGrenade::Precache( void )
+{
+	BaseClass::Precache();
+
+	PrecacheParticleSystem( "grenadetrail" );
+	PrecacheParticleSystem( "riflegrenadetrail" );
+	PrecacheParticleSystem( "explosioncore_midair" );
+	PrecacheParticleSystem( "explosioncore_floor" );
+}
+
+void CDODBaseGrenade::DetonateThink( void )
+{
+	if (!IsInWorld())
+	{
+		Remove( );
+		return;
+	}
+
+	if ( gpGlobals->curtime > m_flCollideWithTeammatesTime && m_bCollideWithTeammates == false )
+	{
+		m_bCollideWithTeammates = true;
+	}
+
+	Vector foo;
+	AngularImpulse a;	
+		
+	VPhysicsGetObject()->GetVelocity( &foo, &a );
+
+	if( gpGlobals->curtime > m_flDetonateTime )
+	{
+		Detonate();
+		return;
+	}
+
+	if (GetWaterLevel() != 0)
+	{
+		SetAbsVelocity( GetAbsVelocity() * 0.5 );
+	}
+
+	SetNextThink( gpGlobals->curtime + 0.2 );
+}
+
+//Sets the time at which the grenade will explode
+void CDODBaseGrenade::SetDetonateTimerLength( float timer )
+{
+	m_flDetonateTime = gpGlobals->curtime + timer;
+}
+
+void CDODBaseGrenade::ResolveFlyCollisionCustom( trace_t &trace, Vector &vecVelocity )
+{
+	//Assume all surfaces have the same elasticity
+	float flSurfaceElasticity = 1.0;
+
+	//Don't bounce off of players with perfect elasticity
+	if( trace.m_pEnt && trace.m_pEnt->IsPlayer() )
+	{
+		flSurfaceElasticity = 0.3;
+	}
+	
+	float flTotalElasticity = GetElasticity() * flSurfaceElasticity;
+	flTotalElasticity = clamp( flTotalElasticity, 0.0f, 0.9f );
+
+	// NOTE: A backoff of 2.0f is a reflection
+	Vector vecAbsVelocity;
+	PhysicsClipVelocity( GetAbsVelocity(), trace.plane.normal, vecAbsVelocity, 2.0f );
+	vecAbsVelocity *= flTotalElasticity;
+
+	// Get the total velocity (player + conveyors, etc.)
+	VectorAdd( vecAbsVelocity, GetBaseVelocity(), vecVelocity );
+	float flSpeedSqr = DotProduct( vecVelocity, vecVelocity );
+
+	// Stop if on ground.
+	if ( trace.plane.normal.z > 0.7f )			// Floor
+	{
+		// Verify that we have an entity.
+		CBaseEntity *pEntity = trace.m_pEnt;
+		Assert( pEntity );
+
+		// Are we on the ground?
+		if ( vecVelocity.z < ( GetCurrentGravity() * gpGlobals->frametime ) )
+		{
+			if ( pEntity->IsStandable() )
+			{
+				SetGroundEntity( pEntity );
+			}
+
+			vecAbsVelocity.z = 0.0f;
+		}
+		SetAbsVelocity( vecAbsVelocity );
+
+		if ( flSpeedSqr < ( 30 * 30 ) )
+		{
+			if ( pEntity->IsStandable() )
+			{
+				SetGroundEntity( pEntity );
+			}
+
+			// Reset velocities.
+			SetAbsVelocity( vec3_origin );
+			SetLocalAngularVelocity( vec3_angle );
+		}
+		else
+		{
+			Vector vecDelta = GetBaseVelocity() - vecAbsVelocity;	
+			Vector vecBaseDir = GetBaseVelocity();
+			VectorNormalize( vecBaseDir );
+			float flScale = vecDelta.Dot( vecBaseDir );
+
+			VectorScale( vecAbsVelocity, ( 1.0f - trace.fraction ) * gpGlobals->frametime, vecVelocity ); 
+			VectorMA( vecVelocity, ( 1.0f - trace.fraction ) * gpGlobals->frametime, GetBaseVelocity() * flScale, vecVelocity );
+			PhysicsPushEntity( vecVelocity, &trace );
+		}
+	}
+	else
+	{
+		// If we get *too* slow, we'll stick without ever coming to rest because
+		// we'll get pushed down by gravity faster than we can escape from the wall.
+		if ( flSpeedSqr < ( 30 * 30 ) )
+		{
+			// Reset velocities.
+			SetAbsVelocity( vec3_origin );
+			SetLocalAngularVelocity( vec3_angle );
+		}
+		else
+		{
+			SetAbsVelocity( vecAbsVelocity );
+		}
+	}
+	
+	BounceSound();
+}
+
+char *CDODBaseGrenade::GetExplodingClassname( void )
+{
+	Assert( !"Baseclass must implement this" );
+	return NULL;
+}
+
+void CDODBaseGrenade::Use( CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYPE useType, float value )
+{
+	if ( !CanBePickedUp() )
+		return;
+
+	if ( !pActivator->IsPlayer() )
+		return;
+
+	CDODPlayer *pPlayer = ToDODPlayer( pActivator );
+
+	//Don't pick up grenades while deployed
+	CBaseCombatWeapon *pWpn = pPlayer->GetActiveWeapon();
+	if ( pWpn && !pWpn->CanHolster() )
+	{
+		return;
+	}
+
+	DODRoundState state = DODGameRules()->State_Get();
+
+	if ( dod_bonusround.GetBool() )
+	{
+		int team = pPlayer->GetTeamNumber();
+
+		// if its after the round and bonus round is on, we can only pick it up if we are winners
+
+		if ( team == TEAM_ALLIES && state == STATE_AXIS_WIN )
+			return;
+
+		if ( team == TEAM_AXIS && state == STATE_ALLIES_WIN )
+			return;
+	}
+	else
+	{
+		// if its after the round, and bonus round is off, don't allow anyone to pick it up
+		if ( state != STATE_RND_RUNNING )
+			return;
+	}	
+
+	OnPickedUp();
+
+	char *szClsName = GetExplodingClassname();
+
+	Assert( szClsName );
+
+	CBaseCombatWeapon *pWeapon = dynamic_cast<CBaseCombatWeapon *>( pPlayer->GiveNamedItem( szClsName ) );
+	
+	Assert( pWeapon && "Wpn pointer has to be valid for us to pick up this grenade" );
+
+	if( pWeapon )
+	{
+		variant_t flDetTime;
+		flDetTime.SetFloat( m_flDetonateTime );
+		pWeapon->AcceptInput( "DetonateTime", this, this, flDetTime, 0 );
+
+#ifdef DBGFLAG_ASSERT
+		bool bSuccess = 
+#endif
+			pPlayer->Weapon_Switch( pWeapon );
+
+		Assert( bSuccess );		
+		
+		//Remove the one we picked up
+		SetThink( NULL );
+		UTIL_Remove( this );
+	}
+}
+
+int CDODBaseGrenade::OnTakeDamage( const CTakeDamageInfo &info )
+{
+	if( info.GetDamageType() & DMG_BULLET )
+	{
+		// Don't allow players to shoot grenades
+		return 0;
+	}
+	else if( info.GetDamageType() & DMG_BLAST )
+	{
+		// Don't allow explosion force to move grenades
+		return 0;
+	}
+
+	VPhysicsTakeDamage( info );
+
+	return BaseClass::OnTakeDamage( info );
+}
+
+void CDODBaseGrenade::Detonate()
+{
+	// Don't explode after the round has ended
+	if ( dod_bonusround.GetBool() == false && DODGameRules()->State_Get() != STATE_RND_RUNNING )
+	{
+		SetDamage( 0 );
+	}
+
+	// stun players in a radius
+	const float flStunDamage = 100;
+
+	CTakeDamageInfo info( this, GetThrower(), GetBlastForce(), GetAbsOrigin(), flStunDamage, DMG_STUN );
+	DODGameRules()->RadiusStun( info, GetAbsOrigin(), m_DmgRadius );
+
+	BaseClass::Detonate();
+}
+
+bool CDODBaseGrenade::CreateVPhysics()
+{
+	// Create the object in the physics system
+	VPhysicsInitNormal( SOLID_BBOX, 0, false );
+	return true;
+}
+
+void CDODBaseGrenade::Explode( trace_t *pTrace, int bitsDamageType )
+{
+	SetModelName( NULL_STRING );//invisible
+	AddSolidFlags( FSOLID_NOT_SOLID );
+
+	m_takedamage = DAMAGE_NO;
+
+	// Pull out of the wall a bit
+	if ( pTrace->fraction != 1.0 )
+	{
+		SetAbsOrigin( pTrace->endpos + (pTrace->plane.normal * 0.6) );
+	}
+
+	// Explosion effect on client
+	Vector vecOrigin = GetAbsOrigin();
+	CPVSFilter filter( vecOrigin );
+	TE_DODExplosion( filter, 0.0f, vecOrigin, pTrace->plane.normal );
+
+	// Use the thrower's position as the reported position
+	Vector vecReported = GetThrower() ? GetThrower()->GetAbsOrigin() : vec3_origin;
+
+	CTakeDamageInfo info( this, GetThrower(), GetBlastForce(), GetAbsOrigin(), m_flDamage, bitsDamageType, 0, &vecReported );
+
+	RadiusDamage( info, vecOrigin, GetDamageRadius(), CLASS_NONE, NULL );
+
+	// Don't decal players with scorch.
+	if ( pTrace->m_pEnt && !pTrace->m_pEnt->IsPlayer() )
+	{
+		UTIL_DecalTrace( pTrace, "Scorch" );
+	}
+
+	SetThink( &CBaseGrenade::SUB_Remove );
+	SetTouch( NULL );
+
+	AddEffects( EF_NODRAW );
+	SetAbsVelocity( vec3_origin );
+	SetNextThink( gpGlobals->curtime );
+}
+
+// this will hit only things that are in newCollisionGroup, but NOT in collisionGroupAlreadyChecked
+class CTraceFilterCollisionGroupDelta : public CTraceFilterEntitiesOnly
+{
+public:
+	// It does have a base, but we'll never network anything below here..
+	DECLARE_CLASS_NOBASE( CTraceFilterCollisionGroupDelta );
+
+	CTraceFilterCollisionGroupDelta( const IHandleEntity *passentity, int collisionGroupAlreadyChecked, int newCollisionGroup )
+		: m_pPassEnt(passentity), m_collisionGroupAlreadyChecked( collisionGroupAlreadyChecked ), m_newCollisionGroup( newCollisionGroup )
+	{
+	}
+
+	virtual bool ShouldHitEntity( IHandleEntity *pHandleEntity, int contentsMask )
+	{
+		if ( !PassServerEntityFilter( pHandleEntity, m_pPassEnt ) )
+			return false;
+		CBaseEntity *pEntity = EntityFromEntityHandle( pHandleEntity );
+
+		if ( pEntity )
+		{
+			if ( g_pGameRules->ShouldCollide( m_collisionGroupAlreadyChecked, pEntity->GetCollisionGroup() ) )
+				return false;
+			if ( g_pGameRules->ShouldCollide( m_newCollisionGroup, pEntity->GetCollisionGroup() ) )
+				return true;
+		}
+
+		return false;
+	}
+
+protected:
+	const IHandleEntity *m_pPassEnt;
+	int		m_collisionGroupAlreadyChecked;
+	int		m_newCollisionGroup;
+};
+
+
+const float GRENADE_COEFFICIENT_OF_RESTITUTION = 0.2f;
+
+void CDODBaseGrenade::VPhysicsUpdate( IPhysicsObject *pPhysics )
+{
+	BaseClass::VPhysicsUpdate( pPhysics );
+	Vector vel;
+	AngularImpulse angVel;
+	pPhysics->GetVelocity( &vel, &angVel );
+
+	Vector start = GetAbsOrigin();
+	// find all entities that my collision group wouldn't hit, but COLLISION_GROUP_NONE would and bounce off of them as a ray cast
+	CTraceFilterCollisionGroupDelta filter( this, GetCollisionGroup(), COLLISION_GROUP_NONE );
+	trace_t tr;
+
+	UTIL_TraceLine( start, start + vel * gpGlobals->frametime, CONTENTS_HITBOX|CONTENTS_MONSTER|CONTENTS_SOLID, &filter, &tr );
+
+	bool bHitTeammate = false;
+
+	if ( m_bCollideWithTeammates == false && tr.m_pEnt && tr.m_pEnt->IsPlayer() && tr.m_pEnt->GetTeamNumber() == GetTeamNumber() )
+	{
+		bHitTeammate = true;
+	}
+
+	if ( tr.startsolid )
+	{
+		if ( m_bInSolid == false && bHitTeammate == false )
+		{
+			// UNDONE: Do a better contact solution that uses relative velocity?
+			vel *= -GRENADE_COEFFICIENT_OF_RESTITUTION; // bounce backwards
+			pPhysics->SetVelocity( &vel, NULL );
+		}
+		m_bInSolid = true;
+		return;
+	}
+	m_bInSolid = false;
+	if ( tr.DidHit() && bHitTeammate == false )
+	{
+		Vector dir = vel;
+		VectorNormalize(dir);
+
+		float flPercent = vel.Length() / 2000;
+		float flDmg = 5 * flPercent;
+
+		// send a tiny amount of damage so the character will react to getting bonked
+		CTakeDamageInfo info( this, GetThrower(), pPhysics->GetMass() * vel, GetAbsOrigin(), flDmg, DMG_CRUSH );
+		tr.m_pEnt->DispatchTraceAttack( info, dir, &tr );
+		ApplyMultiDamage();
+
+		if ( vel.Length() > 1000 )
+		{
+			CTakeDamageInfo stunInfo( this, GetThrower(), vec3_origin, GetAbsOrigin(), flDmg, DMG_STUN );
+			tr.m_pEnt->TakeDamage( stunInfo );
+		}
+
+		// reflect velocity around normal
+		vel = -2.0f * tr.plane.normal * DotProduct(vel,tr.plane.normal) + vel;
+
+		// absorb 80% in impact
+		vel *= GetElasticity();
+		angVel *= -0.5f;
+		pPhysics->SetVelocity( &vel, &angVel );
+	}
+}
+
+float CDODBaseGrenade::GetElasticity( void )
+{
+	return GRENADE_COEFFICIENT_OF_RESTITUTION;
+}
+
+const float DOD_GRENADE_WINDOW_BREAK_DAMPING_AMOUNT = 0.5f;
+
+// If we hit a window, let it break and continue on our way
+// with a damped speed
+void CDODBaseGrenade::VPhysicsCollision( int index, gamevcollisionevent_t *pEvent )
+{
+	CBreakable *pBreakable = dynamic_cast<CBreakable*>( pEvent->pEntities[!index] );
+	if ( pBreakable && pBreakable->GetMaterialType() == matGlass && VPhysicsGetObject() )
+	{
+		// don't stop, go through this entity after breaking it
+		Vector dampedVelocity = DOD_GRENADE_WINDOW_BREAK_DAMPING_AMOUNT * pEvent->preVelocity[index];
+		VPhysicsGetObject()->SetVelocity( &dampedVelocity, &pEvent->preAngularVelocity[index] );
+	}	
+	else
+		BaseClass::VPhysicsCollision( index, pEvent );
+}