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game/shared/tf/tf_weaponbase_grenade.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: TF Base Grenade.
+//
+//=============================================================================//
+#include "cbase.h"
+#include "tf_weaponbase.h"
+#include "tf_weaponbase_grenade.h"
+#include "tf_gamerules.h"
+#include "npcevent.h"
+#include "engine/IEngineSound.h"
+#include "in_buttons.h"	
+#include "tf_weaponbase_grenadeproj.h"
+#include "eventlist.h"
+
+// Client specific.
+#ifdef CLIENT_DLL
+#include "c_tf_player.h"
+// Server specific.
+#else
+#include "tf_player.h"
+#include "items.h"
+#endif
+
+#define GRENADE_TIMER	1.5f			// seconds
+
+//=============================================================================
+//
+// TF Grenade tables.
+//
+
+IMPLEMENT_NETWORKCLASS_ALIASED( TFWeaponBaseGrenade, DT_TFWeaponBaseGrenade )
+
+BEGIN_NETWORK_TABLE( CTFWeaponBaseGrenade, DT_TFWeaponBaseGrenade )
+// Client specific.
+#ifdef CLIENT_DLL
+	RecvPropBool( RECVINFO( m_bPrimed ) ),
+	RecvPropFloat( RECVINFO( m_flThrowTime ) ),
+	RecvPropBool( RECVINFO( m_bThrow ) ),
+// Server specific.
+#else
+	SendPropBool( SENDINFO( m_bPrimed ) ),
+	SendPropTime( SENDINFO( m_flThrowTime ) ),
+	SendPropBool( SENDINFO( m_bThrow ) ),
+#endif
+END_NETWORK_TABLE()
+
+BEGIN_PREDICTION_DATA( CTFWeaponBaseGrenade )
+#ifdef CLIENT_DLL
+	DEFINE_PRED_FIELD( m_bPrimed, FIELD_BOOLEAN, FTYPEDESC_INSENDTABLE ),
+	DEFINE_PRED_FIELD( m_flThrowTime, FIELD_FLOAT, FTYPEDESC_INSENDTABLE ),
+	DEFINE_PRED_FIELD( m_bThrow, FIELD_BOOLEAN, FTYPEDESC_INSENDTABLE ),
+#endif
+END_PREDICTION_DATA()
+
+LINK_ENTITY_TO_CLASS( tf_weaponbase_grenade, CTFWeaponBaseGrenade );
+
+//=============================================================================
+//
+// TF Grenade functions.
+//
+
+CTFWeaponBaseGrenade::CTFWeaponBaseGrenade()
+{
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Constructor.
+//-----------------------------------------------------------------------------
+void CTFWeaponBaseGrenade::Spawn( void )
+{
+	BaseClass::Spawn();
+
+	SetViewModelIndex( 1 );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CTFWeaponBaseGrenade::Precache()
+{
+	BaseClass::Precache();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+bool CTFWeaponBaseGrenade::IsPrimed( void )
+{
+	return m_bPrimed;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+bool CTFWeaponBaseGrenade::Deploy( void )
+{
+	if ( BaseClass::Deploy() )
+	{
+		Prime();
+		return true;
+	}
+
+	return false;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CTFWeaponBaseGrenade::Prime() 
+{
+	CTFWeaponInfo weaponInfo = GetTFWpnData();
+	m_flThrowTime = gpGlobals->curtime + weaponInfo.m_flPrimerTime;
+	m_bPrimed = true;
+
+#ifndef CLIENT_DLL
+	if ( GetWeaponID() != TF_WEAPON_GRENADE_SMOKE_BOMB )
+	{
+		// Get the player owning the weapon.
+		CTFPlayer *pPlayer = ToTFPlayer( GetPlayerOwner() );
+		if ( !pPlayer )
+			return;
+
+		pPlayer->RemoveInvisibility();
+	}
+#endif
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CTFWeaponBaseGrenade::Throw() 
+{
+	if ( !m_bPrimed )
+		return;
+
+	m_bPrimed = false;
+	m_bThrow = false;
+
+	// Get the owning player.
+	CTFPlayer *pPlayer = ToTFPlayer( GetOwner() );
+	if ( !pPlayer )
+		return;
+
+#ifdef GAME_DLL
+	// Calculate the time remaining.
+	float flTime = m_flThrowTime - gpGlobals->curtime;
+	bool bExplodingInHand = ( flTime <= 0.0f );
+
+	// Players who are dying may not have their death state set, so check that too
+	bool bExplodingOnDeath = ( !pPlayer->IsAlive() || pPlayer->StateGet() == TF_STATE_DYING );
+
+	Vector vecSrc, vecThrow;
+	vecSrc = pPlayer->Weapon_ShootPosition();
+
+	if ( bExplodingInHand || bExplodingOnDeath )
+	{
+		vecThrow = vec3_origin;
+	}
+	else
+	{
+		// Determine the throw angle and velocity.
+		QAngle angThrow = pPlayer->LocalEyeAngles();
+		if ( angThrow.x < 90.0f )
+		{
+			angThrow.x = -10.0f + angThrow.x * ( ( 90.0f + 10.0f ) / 90.0f );
+		}
+		else
+		{
+			angThrow.x = 360.0f - angThrow.x;
+			angThrow.x = -10.0f + angThrow.x * -( ( 90.0f - 10.0f ) / 90.0f );
+		}
+
+		// Adjust for the lowering of the spawn point
+		angThrow.x -= 10;
+
+		float flVelocity = ( 90.0f - angThrow.x ) * 8.0f;
+		if ( flVelocity > 950.0f )
+		{
+			flVelocity = 950.0f;
+		}
+
+		Vector vForward, vRight, vUp;
+		AngleVectors( angThrow, &vForward, &vRight, &vUp );
+
+		// Throw from the player's left hand position.
+		vecSrc += vForward * 16.0f + vRight * -8.0f + vUp * -20.0f;
+
+		vecThrow = vForward * flVelocity;
+	}
+
+#if 0
+	// Debug!!!
+	char str[256];
+	Q_snprintf( str, sizeof( str ),"GrenadeTime = %f\n", flTime );
+	NDebugOverlay::ScreenText( 0.5f, 0.38f, str, 255, 255, 255, 255, 2.0f );
+#endif
+
+	QAngle vecAngles = RandomAngle( 0, 360 );
+
+	// Create the projectile and send in the time remaining.
+	if ( !bExplodingInHand )
+	{
+		EmitGrenade( vecSrc, vecAngles, vecThrow, AngularImpulse( 600, random->RandomInt( -1200, 1200 ), 0 ), pPlayer, flTime );
+	}
+	else
+	{
+		// We're holding onto an exploding grenade
+		CTFWeaponBaseGrenadeProj *pGrenade = EmitGrenade( vecSrc, vecAngles, vecThrow, AngularImpulse( 600, random->RandomInt( -1200, 1200 ), 0 ), pPlayer, 0.0 );
+		if ( pGrenade )
+		{
+			pGrenade->Detonate();
+		}
+	}
+
+	// The grenade is about to be destroyed, so it won't be able to holster.
+	// Handle the viewmodel hiding for it.
+	if ( bExplodingInHand || bExplodingOnDeath )
+	{
+		SendWeaponAnim( ACT_VM_IDLE );
+		CBaseViewModel *vm = pPlayer->GetViewModel( 1 );
+		if ( vm )
+		{
+			vm->AddEffects( EF_NODRAW );
+		}
+	}
+#endif
+
+	// Reset the throw time
+	m_flThrowTime = 0.0f;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+bool CTFWeaponBaseGrenade::ShouldDetonate( void )
+{
+	return ( m_flThrowTime != 0.0f ) && ( m_flThrowTime < gpGlobals->curtime );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CTFWeaponBaseGrenade::ItemPostFrame()
+{
+	CTFPlayer *pPlayer = ToTFPlayer( GetPlayerOwner() );
+	if ( !pPlayer )
+		return;
+
+	if ( m_bPrimed )
+	{
+		// Is our timer up? If so, blow up immediately
+		if ( ShouldDetonate() )
+		{
+			Throw();
+			return;
+		}
+
+		if ( !m_bThrow && !( pPlayer->m_nButtons & IN_GRENADE1 || pPlayer->m_nButtons & IN_GRENADE2 ) )
+		{
+			// Start throwing
+			pPlayer->DoAnimationEvent( PLAYERANIMEVENT_ATTACK_GRENADE );
+			m_bThrow = true;
+		}		
+	}
+
+	if ( m_bThrow )
+	{
+		if ( GetActivity() != ACT_VM_PRIMARYATTACK )
+		{
+			// Start the throw animation
+			if ( !SendWeaponAnim( ACT_VM_PRIMARYATTACK ) )
+			{
+				Throw();
+			}
+		}
+		else if ( HasWeaponIdleTimeElapsed() )
+		{
+			// The Throw call here exists solely to catch the lone case of thirdperson where the 
+			// viewmodel isn't being drawn, and hence the anim event doesn't trigger and force a throw.
+			// In all other cases, it'll do nothing because the grenade has already been thrown.
+			Throw();
+		}
+		return;
+	}
+
+	if ( !m_bPrimed && !m_bThrow )
+	{
+		// Once we've finished being holstered, we'll be hidden. When that happens,
+		// tell our player that we're all done with the grenade throw.
+		if ( IsEffectActive(EF_NODRAW) )
+		{
+			pPlayer->FinishThrowGrenade();
+			return;
+		}
+
+		// We've been thrown. Go away.
+		if ( HasWeaponIdleTimeElapsed() )
+		{
+			Holster();
+		}
+	}
+
+	// Go straight to idle anim when deploy is done
+	if ( m_flTimeWeaponIdle <= gpGlobals->curtime )
+	{
+		SendWeaponAnim( ACT_VM_IDLE );
+	}
+}
+
+bool CTFWeaponBaseGrenade::ShouldLowerMainWeapon( void )
+{
+	return GetTFWpnData().m_bLowerWeapon;
+}
+
+//=============================================================================
+//
+// Client specific functions.
+//
+#ifdef CLIENT_DLL
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+bool CTFWeaponBaseGrenade::ShouldDraw( void )
+{
+	if ( !BaseClass::ShouldDraw() )
+	{
+		// Grenades need to be visible whenever they're being primed & thrown
+		if ( !m_bPrimed )
+			return false;
+
+		// Don't draw primed grenades for local player in first person players
+		if ( !(ToPlayer(GetOwner())->ShouldDrawThisPlayer()) )
+			return false;
+	}
+
+	return true;
+}
+
+//=============================================================================
+//
+// Server specific functions.
+//
+#else
+
+BEGIN_DATADESC( CTFWeaponBaseGrenade )
+END_DATADESC()
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CTFWeaponBaseGrenade::HandleAnimEvent( animevent_t *pEvent )
+{
+	if ( (pEvent->type & AE_TYPE_NEWEVENTSYSTEM) )
+	{
+		if ( pEvent->event == AE_WPN_PRIMARYATTACK )
+		{
+			Throw();
+			return;
+		}
+	}
+
+	BaseClass::HandleAnimEvent( pEvent );	
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+CTFWeaponBaseGrenadeProj *CTFWeaponBaseGrenade::EmitGrenade( Vector vecSrc, QAngle vecAngles, Vector vecVel, AngularImpulse angImpulse, CBasePlayer *pPlayer, float flTime, int iFlags )
+{
+	Assert( 0 && "CBaseCSGrenade::EmitGrenade should not be called. Make sure to implement this in your subclass!\n" );
+	return NULL;
+}
+
+#endif
+