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game/shared/cstrike/basecsgrenade_projectile.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#include "cbase.h"
+#include "basecsgrenade_projectile.h"
+
+float GetCurrentGravity( void );
+
+
+#ifdef CLIENT_DLL
+
+	#include "c_cs_player.h"
+
+#else
+
+	#include "bot_manager.h"
+	#include "cs_player.h"
+	#include "soundent.h"
+	#include "te_effect_dispatch.h"
+	#include "KeyValues.h"
+
+	BEGIN_DATADESC( CBaseCSGrenadeProjectile )
+		DEFINE_THINKFUNC( DangerSoundThink ),
+	END_DATADESC()
+
+#endif
+
+
+IMPLEMENT_NETWORKCLASS_ALIASED( BaseCSGrenadeProjectile, DT_BaseCSGrenadeProjectile )
+
+BEGIN_NETWORK_TABLE( CBaseCSGrenadeProjectile, DT_BaseCSGrenadeProjectile )
+	#ifdef CLIENT_DLL
+		RecvPropVector( RECVINFO( m_vInitialVelocity ) )
+	#else
+		SendPropVector( SENDINFO( m_vInitialVelocity ), 
+			20,		// nbits
+			0,		// flags
+			-3000,	// low value
+			3000	// high value
+			)
+	#endif
+END_NETWORK_TABLE()
+
+
+#ifdef CLIENT_DLL
+
+
+	void CBaseCSGrenadeProjectile::PostDataUpdate( DataUpdateType_t type )
+	{
+		BaseClass::PostDataUpdate( type );
+
+		if ( type == DATA_UPDATE_CREATED )
+		{
+			// Now stick our initial velocity into the interpolation history 
+			CInterpolatedVar< Vector > &interpolator = GetOriginInterpolator();
+			
+			interpolator.ClearHistory();
+			float changeTime = GetLastChangeTime( LATCH_SIMULATION_VAR );
+
+			// Add a sample 1 second back.
+			Vector vCurOrigin = GetLocalOrigin() - m_vInitialVelocity;
+			interpolator.AddToHead( changeTime - 1.0, &vCurOrigin, false );
+
+			// Add the current sample.
+			vCurOrigin = GetLocalOrigin();
+			interpolator.AddToHead( changeTime, &vCurOrigin, false );
+		}
+	}
+
+	int CBaseCSGrenadeProjectile::DrawModel( int flags )
+	{
+		// During the first half-second of our life, don't draw ourselves if he's
+		// still playing his throw animation.
+		// (better yet, we could draw ourselves in his hand).
+		if ( GetThrower() != C_BasePlayer::GetLocalPlayer() )
+		{
+			if ( gpGlobals->curtime - m_flSpawnTime < 0.5 )
+			{
+				C_CSPlayer *pPlayer = dynamic_cast<C_CSPlayer*>( GetThrower() );
+				if ( pPlayer && pPlayer->m_PlayerAnimState->IsThrowingGrenade() )
+				{
+					return 0;
+				}
+			}
+		}
+
+		return BaseClass::DrawModel( flags );
+	}
+
+	void CBaseCSGrenadeProjectile::Spawn()
+	{
+		m_flSpawnTime = gpGlobals->curtime;
+		BaseClass::Spawn();
+	}
+
+#else
+
+	void CBaseCSGrenadeProjectile::PostConstructor( const char *className )
+	{
+		BaseClass::PostConstructor( className );
+		TheBots->AddGrenade( this );
+	}
+
+	CBaseCSGrenadeProjectile::~CBaseCSGrenadeProjectile()
+	{
+		TheBots->RemoveGrenade( this );
+	}
+
+	void CBaseCSGrenadeProjectile::Spawn( void )
+	{
+		BaseClass::Spawn();
+
+		SetSolidFlags( FSOLID_NOT_STANDABLE );
+		SetMoveType( MOVETYPE_FLYGRAVITY, MOVECOLLIDE_FLY_CUSTOM );
+		SetSolid( SOLID_BBOX );	// So it will collide with physics props!
+
+		// smaller, cube bounding box so we rest on the ground
+		SetSize( Vector ( -2, -2, -2 ), Vector ( 2, 2, 2 ) );
+	}
+
+	void CBaseCSGrenadeProjectile::DangerSoundThink( void )
+	{
+		if (!IsInWorld())
+		{
+			Remove( );
+			return;
+		}
+
+		if( gpGlobals->curtime > m_flDetonateTime )
+		{
+			Detonate();
+			return;
+		}
+
+		CSoundEnt::InsertSound ( SOUND_DANGER, GetAbsOrigin() + GetAbsVelocity() * 0.5, GetAbsVelocity().Length( ), 0.2 );
+
+		SetNextThink( gpGlobals->curtime + 0.2 );
+
+		if (GetWaterLevel() != 0)
+		{
+			SetAbsVelocity( GetAbsVelocity() * 0.5 );
+		}
+	}
+
+	//Sets the time at which the grenade will explode
+	void CBaseCSGrenadeProjectile::SetDetonateTimerLength( float timer )
+	{
+		m_flDetonateTime = gpGlobals->curtime + timer;
+	}
+
+	void CBaseCSGrenadeProjectile::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;
+		}
+
+		// if its breakable glass and we kill it, don't bounce.
+		// give some damage to the glass, and if it breaks, pass 
+		// through it.
+		bool breakthrough = false;
+
+		if( trace.m_pEnt && FClassnameIs( trace.m_pEnt, "func_breakable" ) )
+		{
+			breakthrough = true;
+		}
+
+		if( trace.m_pEnt && FClassnameIs( trace.m_pEnt, "func_breakable_surf" ) )
+		{
+			breakthrough = true;
+		}
+
+		if (breakthrough)
+		{
+			CTakeDamageInfo info( this, this, 10, DMG_CLUB );
+			trace.m_pEnt->DispatchTraceAttack( info, GetAbsVelocity(), &trace );
+
+			ApplyMultiDamage();
+
+			if( trace.m_pEnt->m_iHealth <= 0 )
+			{
+				// slow our flight a little bit
+				Vector vel = GetAbsVelocity();
+
+				vel *= 0.4;
+
+				SetAbsVelocity( vel );
+				return;
+			}
+		}
+		
+		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 );
+
+			SetAbsVelocity( vecAbsVelocity );
+
+			if ( flSpeedSqr < ( 30 * 30 ) )
+			{
+				if ( pEntity->IsStandable() )
+				{
+					SetGroundEntity( pEntity );
+				}
+
+				// Reset velocities.
+				SetAbsVelocity( vec3_origin );
+				SetLocalAngularVelocity( vec3_angle );
+
+				//align to the ground so we're not standing on end
+				QAngle angle;
+				VectorAngles( trace.plane.normal, angle );
+
+				// rotate randomly in yaw
+				angle[1] = random->RandomFloat( 0, 360 );
+
+				// TODO: rotate around trace.plane.normal
+				
+				SetAbsAngles( 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();
+
+		// tell the bots a grenade has bounced
+		CCSPlayer *player = ToCSPlayer(GetThrower());
+		if ( player )
+		{
+			IGameEvent * event = gameeventmanager->CreateEvent( "grenade_bounce" );
+			if ( event )
+			{
+				event->SetInt( "userid", player->GetUserID() );
+				event->SetFloat( "x", GetAbsOrigin().x );
+				event->SetFloat( "y", GetAbsOrigin().y );
+				event->SetFloat( "z", GetAbsOrigin().z );
+				gameeventmanager->FireEvent( event );
+			}
+		}
+	}
+
+	void CBaseCSGrenadeProjectile::SetupInitialTransmittedGrenadeVelocity( const Vector &velocity )
+	{
+		m_vInitialVelocity = velocity;
+	}
+
+	#define	MAX_WATER_SURFACE_DISTANCE	512
+
+	void CBaseCSGrenadeProjectile::Splash()
+	{
+		Vector centerPoint = GetAbsOrigin();
+		Vector normal( 0, 0, 1 );
+
+		// Find our water surface by tracing up till we're out of the water
+		trace_t tr;
+		Vector vecTrace( 0, 0, MAX_WATER_SURFACE_DISTANCE );
+		UTIL_TraceLine( centerPoint, centerPoint + vecTrace, MASK_WATER, NULL, COLLISION_GROUP_NONE, &tr );
+
+		// If we didn't start in water, we're above it
+		if ( tr.startsolid == false )
+		{
+			// Look downward to find the surface
+			vecTrace.Init( 0, 0, -MAX_WATER_SURFACE_DISTANCE );
+			UTIL_TraceLine( centerPoint, centerPoint + vecTrace, MASK_WATER, NULL, COLLISION_GROUP_NONE, &tr );
+
+			// If we hit it, setup the explosion
+			if ( tr.fraction < 1.0f )
+			{
+				centerPoint = tr.endpos;
+			}
+			else
+			{
+				//NOTENOTE: We somehow got into a splash without being near water?
+				Assert( 0 );
+			}
+		}
+		else if ( tr.fractionleftsolid )
+		{
+			// Otherwise we came out of the water at this point
+			centerPoint = centerPoint + (vecTrace * tr.fractionleftsolid);
+		}
+		else
+		{
+			// Use default values, we're really deep
+		}
+
+		CEffectData	data;
+ 		data.m_vOrigin = centerPoint;
+		data.m_vNormal = normal;
+		data.m_flScale = random->RandomFloat( 1.0f, 2.0f );
+
+		if ( GetWaterType() & CONTENTS_SLIME )
+		{
+			data.m_fFlags |= FX_WATER_IN_SLIME;
+		}
+
+		DispatchEffect( "gunshotsplash", data );
+	}
+
+#endif // !CLIENT_DLL