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game/shared/tf2/grenade_antipersonnel.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "cbase.h"
+#include "tf_player.h"
+#include "tf_basecombatweapon.h"
+#include "basegrenade_shared.h"
+#include "engine/IEngineSound.h"
+#include "tf_shareddefs.h"
+#include "IEffects.h"
+#include "Sprite.h"
+#include "grenade_antipersonnel.h"
+
+// Damage CVars
+ConVar	weapon_antipersonnel_grenade_damage( "weapon_antipersonnel_grenade_damage","0", FCVAR_NONE, "Anti-personnel grenade maximum damage" );
+ConVar	weapon_antipersonnel_grenade_radius( "weapon_antipersonnel_grenade_radius","0", FCVAR_NONE, "Anti-personnel grenade splash radius" );
+
+#if !defined( CLIENT_DLL )
+// Server Only
+ConVar weapon_antipersonnel_grenade_force( "weapon_antipersonnel_grenade_force","225.0", FCVAR_NONE, "Grenade explosive force modifier." );
+#endif
+
+
+IMPLEMENT_SERVERCLASS_ST(CGrenadeAntiPersonnel, DT_GrenadeAntiPersonnel)
+END_SEND_TABLE()
+
+LINK_ENTITY_TO_CLASS( grenade_antipersonnel, CGrenadeAntiPersonnel );
+PRECACHE_WEAPON_REGISTER(grenade_antipersonnel);
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+CGrenadeAntiPersonnel::CGrenadeAntiPersonnel()
+{
+	UseClientSideAnimation();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose:
+//-----------------------------------------------------------------------------
+void CGrenadeAntiPersonnel::Precache( void )
+{
+	BaseClass::Precache( );
+
+	PrecacheModel( "models/weapons/w_grenade.mdl" );
+	PrecacheModel( "sprites/redglow1.vmt" );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CGrenadeAntiPersonnel::Spawn( void )
+{
+	Precache();
+
+	SetMoveType( MOVETYPE_FLYGRAVITY, MOVECOLLIDE_FLY_BOUNCE );
+	SetSolid( SOLID_BBOX );
+	SetGravity( 1.0 );
+	SetFriction( 0.9 );
+	SetElasticity( 2.0f );
+	SetModel( "models/weapons/w_grenade.mdl" );
+	UTIL_SetSize(this, vec3_origin, vec3_origin);
+	SetTouch( BounceTouch );
+	SetCollisionGroup( TFCOLLISION_GROUP_GRENADE );
+
+	m_flDetonateTime = gpGlobals->curtime + 3.0;
+	SetThink( TumbleThink );
+	SetNextThink( gpGlobals->curtime + 0.1f );
+
+	// Set my damages to the cvar values
+	SetDamage( weapon_antipersonnel_grenade_damage.GetFloat() );
+	SetDamageRadius( weapon_antipersonnel_grenade_radius.GetFloat() );
+
+	// Create a green light
+	m_pLiveSprite = CSprite::SpriteCreate( "sprites/redglow1.vmt", GetLocalOrigin() + Vector(0,0,1), false );
+	m_pLiveSprite->SetTransparency( kRenderGlow, 0, 255, 0, 128, kRenderFxNoDissipation );
+	m_pLiveSprite->SetBrightness( 255 );
+	m_pLiveSprite->SetScale( 1 );
+	m_pLiveSprite->SetAttachment( this, 0 );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CGrenadeAntiPersonnel::UpdateOnRemove( void )
+{
+	// Remove our live sprite
+	if ( m_pLiveSprite )
+	{
+		UTIL_Remove( m_pLiveSprite );
+		m_pLiveSprite = NULL;
+	}
+
+	// Chain at end to mimic destructor unwind order
+	BaseClass::UpdateOnRemove();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Allow shield parry's
+//-----------------------------------------------------------------------------
+void CGrenadeAntiPersonnel::BounceTouch( CBaseEntity *pOther )
+{
+	// Don't blow up on trigger brushes
+	Assert( pOther );
+	if ( !pOther->IsSolid() )
+		return;
+
+	if ( pOther->GetCollisionGroup() == TFCOLLISION_GROUP_SHIELD )
+	{
+		// Move away from the shield...
+		// Fling it out a little extra along the plane normal
+		Vector vecCenter;
+		AngleVectors( pOther->GetAbsAngles(), &vecCenter );
+
+		// Bounce off the ground if it's on the ground...
+		Vector vecNewVelocity = GetAbsVelocity();
+		VectorMultiply( vecCenter, 400.0f, vecNewVelocity );
+		if ((GetFlags() & FL_ONGROUND) && vecNewVelocity.z <= 100.0f)
+		{
+			vecNewVelocity.z = 100.0f;
+		}
+		SetAbsVelocity( vecNewVelocity );
+	}
+
+	// If we're set to explode on contact, and we just hit an enemy, go kaboom
+	if ( m_bExplodeOnContact && !InSameTeam(pOther) && pOther->m_takedamage != DAMAGE_NO )
+	{
+		Detonate();
+		return;
+	}
+
+	BaseClass::BounceTouch( pOther );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Return the radius for the screenshake
+//-----------------------------------------------------------------------------
+float CGrenadeAntiPersonnel::GetShakeRadius( void )
+{
+	return (m_DmgRadius * 2);
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Create a missile
+//-----------------------------------------------------------------------------
+void CGrenadeAntiPersonnel::Detonate( void )
+{
+	BaseClass::Detonate();
+
+	// iterate on all entities in the vicinity and find vehicles
+	CBaseEntity *pEntity = NULL;
+	for ( CEntitySphereQuery sphere( GetAbsOrigin(), m_DmgRadius ); ( pEntity = sphere.GetCurrentEntity() ) != NULL; sphere.NextEntity() )
+	{
+		// Check team.
+		if ( pEntity->GetTeam() == GetTeam() )
+			continue;
+
+		if ( pEntity->GetServerVehicle() ) 
+		{
+			IPhysicsObject *pPhysObject = pEntity->VPhysicsGetObject();
+			if ( pPhysObject )
+			{
+				// Rocket the vehicle in the direction of the incoming rocket.
+				Vector vecForceDir = pEntity->GetAbsOrigin() - GetAbsOrigin();
+				float flDistance = VectorNormalize( vecForceDir );
+
+				if ( flDistance >= 0.0f && flDistance < m_DmgRadius )
+				{
+					vecForceDir.z = 1.0f;
+					VectorNormalize( vecForceDir );
+					
+					float flForce = pPhysObject->GetMass();
+					flForce += ( 4 * 500.0f );				// Wheels
+					flForce *= weapon_antipersonnel_grenade_force.GetFloat();
+					flForce *= ( 1.0f - ( flDistance / m_DmgRadius ) );
+					
+					vecForceDir *= flForce;
+					
+					pPhysObject->ApplyForceOffset( vecForceDir, GetAbsOrigin() );
+				}
+			}		
+		}
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Create a missile
+//-----------------------------------------------------------------------------
+CGrenadeAntiPersonnel *CGrenadeAntiPersonnel::Create( const Vector &vecOrigin, const Vector &vecForward, CBasePlayer *pOwner )
+{
+	CGrenadeAntiPersonnel *pGrenade = (CGrenadeAntiPersonnel*)CreateEntityByName("grenade_antipersonnel");
+
+	UTIL_SetOrigin( pGrenade, vecOrigin );
+	pGrenade->Spawn();
+	pGrenade->ChangeTeam( pOwner->GetTeamNumber() );
+	pGrenade->SetOwnerEntity( pOwner );
+	pGrenade->SetThrower( pOwner );
+	pGrenade->SetAbsVelocity( vecForward );
+	QAngle angles;
+	VectorAngles( vecForward, angles );
+	pGrenade->SetLocalAngles( angles );
+	pGrenade->SetLocalAngularVelocity( RandomAngle(-500,500) );
+
+	return pGrenade;
+}
+
+
+