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game/server/tf/player_vs_environment/archer_proxy.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+#include "cbase.h"
+
+#include "tf_player.h"
+#include "tf_projectile_arrow.h"
+#include "tf_weapon_grenade_pipebomb.h"
+#include "archer_proxy.h"
+
+LINK_ENTITY_TO_CLASS( archer_proxy, CTFArcherProxy );
+
+
+ConVar tf_archer_proxy_fire_rate( "tf_archer_proxy_fire_rate", "1", FCVAR_CHEAT );
+
+
+//--------------------------------------------------------------------------------------
+void CTFArcherProxy::Precache( void )
+{
+	// don't need to precache, since player does this for us
+	BaseClass::Precache();
+}
+
+
+//--------------------------------------------------------------------------------------
+void CTFArcherProxy::Spawn( void )
+{
+	BaseClass::Spawn();
+
+	SetThink( &CTFArcherProxy::Update );
+	SetNextThink( gpGlobals->curtime + RandomFloat( 0.1, 1.0f ) * tf_archer_proxy_fire_rate.GetFloat() );
+
+	m_state = HIDDEN;
+	m_timer.Invalidate();
+	AddEffects( EF_NODRAW );
+	m_homePos = GetAbsOrigin();
+
+	SetModel( "models/weapons/w_models/w_arrow.mdl" );
+}
+
+
+//---------------------------------------------------------------------------------------------
+CTFPlayer *CTFArcherProxy::SelectTarget( void )
+{
+	// collect everyone
+	CUtlVector< CTFPlayer * > playerVector;
+	CollectPlayers( &playerVector, TF_TEAM_RED, COLLECT_ONLY_LIVING_PLAYERS );
+	CollectPlayers( &playerVector, TF_TEAM_BLUE, COLLECT_ONLY_LIVING_PLAYERS, APPEND_PLAYERS );
+
+	CTFPlayer *newVictim = NULL;
+	float victimRangeSq = FLT_MAX;
+	trace_t result;
+
+	for( int i=0; i<playerVector.Count(); ++i )
+	{
+		float rangeSq = ( playerVector[i]->GetAbsOrigin() - GetAbsOrigin() ).LengthSqr();
+		if ( rangeSq < victimRangeSq )
+		{
+			UTIL_TraceLine( GetAbsOrigin(), playerVector[i]->EyePosition(), MASK_SOLID, this, COLLISION_GROUP_DEBRIS, &result );			
+
+			if ( !result.DidHit() )
+			{
+				newVictim = playerVector[i];
+				victimRangeSq = rangeSq;
+			}
+		}
+	}
+
+	return newVictim;
+}
+
+
+//--------------------------------------------------------------------------------------
+void CTFArcherProxy::Update( void )
+{
+	SetNextThink( gpGlobals->curtime );
+
+	switch( m_state )
+	{
+	case HIDDEN:
+		m_state = EMERGE;
+		RemoveEffects( EF_NODRAW );
+		m_timer.Start( 1.0f );
+		break;
+
+	case EMERGE:
+		m_state = AIM_AND_FIRE;
+		m_timer.Start( 1.0f );
+		break;
+
+	case AIM_AND_FIRE:
+		{
+			CTFPlayer *target = SelectTarget();
+			if ( target )
+			{
+				Vector to = target->GetAbsOrigin() - GetAbsOrigin();
+				QAngle angles;
+				VectorAngles( to, angles );
+
+				SetAbsAngles( angles );
+
+				if ( m_timer.IsElapsed() )
+				{
+					ShootArrowAt( target );
+					// ShootGrenadeAt( target );
+
+					m_state = HIDE;
+					m_timer.Start( 1.0f );
+				}
+			}
+			break;
+		}
+
+	case HIDE:
+		if ( m_timer.IsElapsed() )
+		{
+			m_state = HIDDEN;
+			AddEffects( EF_NODRAW );
+			m_timer.Start( 1.0f );
+		}
+		break;
+	}
+
+}
+
+
+//--------------------------------------------------------------------------------------
+void CTFArcherProxy::ShootArrowAt( CBaseEntity *target )
+{
+	if ( !target )
+	{
+		return;
+	}
+
+	Vector to = target->EyePosition() - GetAbsOrigin();
+	to.NormalizeInPlace();
+
+	QAngle angles;
+	VectorAngles( to, angles );
+
+	const float arrowSpeed = 2600.0f;
+	const float arrowGravity = 0.1f;
+	CTFProjectile_Arrow *arrow = CTFProjectile_Arrow::Create( GetAbsOrigin() + 20.0f * to, angles, arrowSpeed, arrowGravity, TF_PROJECTILE_ARROW, this, this );
+	if ( arrow )
+	{
+		arrow->SetLauncher( this );
+		arrow->SetCritical( false );
+		arrow->SetDamage( 100.0f );
+
+		EmitSound( "Weapon_CompoundBow.Single" );
+	}
+}
+
+
+//--------------------------------------------------------------------------------------
+void CTFArcherProxy::ShootGrenadeAt( CBaseEntity *target )
+{
+	if ( !target )
+	{
+		return;
+	}
+
+	Vector to = target->EyePosition() - GetAbsOrigin();
+	to.NormalizeInPlace();
+
+	QAngle angles;
+	VectorAngles( to, angles );
+
+
+	float launchSpeed = 1000.0f;
+	Vector velocity = ( to * launchSpeed ) + ( Vector( 0, 0, 1.0f ) * 200.0f );
+	AngularImpulse angVelocity = AngularImpulse( 600, random->RandomInt( -1200, 1200 ), 0 );
+
+	CTFGrenadePipebombProjectile *grenade = static_cast< CTFGrenadePipebombProjectile * >( CBaseEntity::CreateNoSpawn( "tf_projectile_pipe", GetAbsOrigin(), angles, NULL ) );
+	if ( grenade )
+	{
+		// Set the pipebomb mode before calling spawn, so the model & associated vphysics get setup properly
+		grenade->SetPipebombMode();
+		DispatchSpawn( grenade );
+
+		const int damage = 100;
+		const float radius = 100.0f;
+
+		grenade->InitGrenade( velocity, angVelocity, NULL, damage, radius );
+		grenade->m_flFullDamage = grenade->GetDamage();
+		grenade->ApplyLocalAngularVelocityImpulse( angVelocity );
+		grenade->SetCritical( false );
+		grenade->SetLauncher( this );
+	}
+}