Exemplo n.º 1
0
void C_ParticleSmokeGrenade::Start(CParticleMgr *pParticleMgr, IPrototypeArgAccess *pArgs)
{
	if(!pParticleMgr->AddEffect( &m_ParticleEffect, this ))
		return;
	
	m_SmokeTrail.Start(pParticleMgr, pArgs);

	m_SmokeTrail.m_ParticleLifetime = 0.5;
	m_SmokeTrail.SetSpawnRate(40);
	m_SmokeTrail.m_MinSpeed = 0;
	m_SmokeTrail.m_MaxSpeed = 0;
	m_SmokeTrail.m_StartSize = 3;
	m_SmokeTrail.m_EndSize = 10;
	m_SmokeTrail.m_SpawnRadius = 0;

	m_SmokeTrail.SetLocalOrigin( GetAbsOrigin() );

	for(int i=0; i < NUM_MATERIAL_HANDLES; i++)
	{
		char str[256];
		Q_snprintf(str, sizeof( str ), "particle/particle_smokegrenade%d", i+1);
		m_MaterialHandles[i] = m_ParticleEffect.FindOrAddMaterial(str);
	}

	if( m_CurrentStage == 2 )
	{
		FillVolume();
	}

	// Go straight into "fill volume" mode if they want.
	if(pArgs)
	{
		if(pArgs->FindArg("-FillVolume"))
		{
			FillVolume();
		}
	}

	m_bStarted = true;
	SetNextClientThink( CLIENT_THINK_ALWAYS );

#if CSTRIKE_DLL
	C_CSPlayer *pPlayer = C_CSPlayer::GetLocalCSPlayer();

	if ( pPlayer )
	{
		 pPlayer->m_SmokeGrenades.AddToTail( this );
	}
#endif
		 
}
void C_ParticleSmokeGrenade::Start(CParticleMgr *pParticleMgr, IPrototypeArgAccess *pArgs)
{
	if(!pParticleMgr->AddEffect( &m_ParticleEffect, this ))
		return;

	m_LifetimeCounter = 0;
	m_SmokeTrail.Start(pParticleMgr, pArgs);

	m_SmokeTrail.m_ParticleLifetime = 0.5;
	m_SmokeTrail.SetSpawnRate(40);
	m_SmokeTrail.m_MinSpeed = 0;
	m_SmokeTrail.m_MaxSpeed = 0;
	m_SmokeTrail.m_StartSize = 3;
	m_SmokeTrail.m_EndSize = 10;
	m_SmokeTrail.m_SpawnRadius = 0;

	m_SmokeTrail.SetLocalOrigin( GetAbsOrigin() );

	for(int i=0; i < NUM_MATERIAL_HANDLES; i++)
	{
		char str[256];
		Q_snprintf(str, sizeof( str ), "particle/particle_smokegrenade%d", i+1);
		m_MaterialHandles[i] = m_ParticleEffect.FindOrAddMaterial(str);
	}

	if( m_CurrentStage == 2 )
	{
		FillVolume();
	}

	// Go straight into "fill volume" mode if they want.
	if(pArgs)
	{
		if(pArgs->FindArg("-FillVolume"))
		{
			FillVolume();
		}
	}

	m_bStarted = true;
}
void C_ParticleSmokeGrenade::UpdateSmokeTrail( float fTimeDelta )
{
	C_BaseEntity *pAimEnt = GetFollowedEntity();
	if ( pAimEnt )
	{
		Vector forward, right, up;

		// Update the smoke particle color.
		if(m_CurrentStage == 0)
		{
			m_SmokeTrail.m_StartColor = EngineGetLightForPoint(GetAbsOrigin()) * 0.5f;
			m_SmokeTrail.m_EndColor = m_SmokeTrail.m_StartColor;
		}

		// Spin the smoke trail.
		AngleVectors(pAimEnt->GetAbsAngles(), &forward, &right, &up);
		m_SmokeTrail.m_VelocityOffset = forward * 30 + GetAbsVelocity();

		m_SmokeTrail.SetLocalOrigin( GetAbsOrigin() );
		m_SmokeTrail.Update(fTimeDelta);
	}	
}
void C_ParticleSmokeGrenade::Update(float fTimeDelta)
{
	m_LifetimeCounter += fTimeDelta;
	
	// Update the smoke trail.
	C_BaseEntity *pAimEnt = GetFollowedEntity();
	if ( pAimEnt )
	{
		Vector forward, right, up;

		// Update the smoke particle color.
		if(m_CurrentStage == 0)
		{
			m_SmokeTrail.m_StartColor = EngineGetLightForPoint(GetAbsOrigin()) * 0.5f;
			m_SmokeTrail.m_EndColor = m_SmokeTrail.m_StartColor;
		}

		// Spin the smoke trail.
		AngleVectors(pAimEnt->GetAbsAngles(), &forward, &right, &up);
		m_SmokeTrail.m_VelocityOffset = forward * 30 + GetAbsVelocity();

		m_SmokeTrail.SetLocalOrigin( GetAbsOrigin() );
		m_SmokeTrail.Update(fTimeDelta);
	}	
	
	
	// Update our fade alpha.
	if(m_LifetimeCounter < m_FadeStartTime)
	{
		m_FadeAlpha = 1;
	}
	else if(m_LifetimeCounter < m_FadeEndTime)
	{
		float fadePercent = (m_LifetimeCounter - m_FadeStartTime) / (m_FadeEndTime - m_FadeStartTime);
		m_FadeAlpha = cos(fadePercent * 3.14159) * 0.5 + 0.5;
	}
	else
	{
		m_FadeAlpha = 0;
	}

	// Scale by the amount the sphere has grown.
	m_FadeAlpha *= m_ExpandRadius / SMOKESPHERE_MAX_RADIUS;

	if(m_CurrentStage == 1)
	{
		// Update the expanding sphere.
		m_ExpandTimeCounter += fTimeDelta;
		if(m_ExpandTimeCounter > SMOKESPHERE_EXPAND_TIME)
			m_ExpandTimeCounter = SMOKESPHERE_EXPAND_TIME;

		m_ExpandRadius = SMOKESPHERE_MAX_RADIUS * (float)sin(m_ExpandTimeCounter * 3.14159265358 * 0.5 / SMOKESPHERE_EXPAND_TIME);

		// Add our influence to the global smoke fog alpha.
		float testDist = (EngineGetVecRenderOrigin() - m_SmokeBasePos).Length();
		float fadeEnd = m_ExpandRadius * 0.75;
		if(testDist < fadeEnd)
		{
			EngineGetSmokeFogOverlayAlpha() += 1 - testDist / fadeEnd;
		}	


		// This is used to randomize the direction it chooses to move a particle in.
		int offsetLookup[3] = {-1,0,1};

		// Update all the moving traders and establish new ones.
		int nTotal = m_xCount * m_yCount * m_zCount;
		for(int i=0; i < nTotal; i++)
		{
			SmokeParticleInfo *pInfo = &m_SmokeParticleInfos[i];

			if(!pInfo->m_pParticle)
				continue;
		
			if(pInfo->m_TradeIndex == -1)
			{
				pInfo->m_pParticle->m_FadeAlpha = pInfo->m_FadeAlpha;
				pInfo->m_pParticle->m_Color[0] = pInfo->m_Color[0];
				pInfo->m_pParticle->m_Color[1] = pInfo->m_Color[1];
				pInfo->m_pParticle->m_Color[2] = pInfo->m_Color[2];

				// Is there an adjacent one that's not trading?
				int x, y, z;
				GetParticleInfoXYZ(i, x, y, z);

				int xCountOffset = rand();
				int yCountOffset = rand();
				int zCountOffset = rand();

				bool bFound = false;
				for(int xCount=0; xCount < 3 && !bFound; xCount++)
				{
					for(int yCount=0; yCount < 3 && !bFound; yCount++)
					{
						for(int zCount=0; zCount < 3; zCount++)
						{
							int testX = x + offsetLookup[(xCount+xCountOffset) % 3];
							int testY = y + offsetLookup[(yCount+yCountOffset) % 3];
							int testZ = z + offsetLookup[(zCount+zCountOffset) % 3];

							if(testX == x && testY == y && testZ == z)
								continue;

							if(IsValidXYZCoords(testX, testY, testZ))
							{
								SmokeParticleInfo *pOther = GetSmokeParticleInfo(testX, testY, testZ);
								if(pOther->m_pParticle && pOther->m_TradeIndex == -1)
								{
									// Ok, this one is looking to trade also.
									pInfo->m_TradeIndex = GetSmokeParticleIndex(testX, testY, testZ);
									pOther->m_TradeIndex = i;
									pInfo->m_TradeClock = pOther->m_TradeClock = 0;
									pInfo->m_TradeDuration = FRand(TRADE_DURATION_MIN, TRADE_DURATION_MAX);
									
									bFound = true;
									break;
								}
							}
						}
					}
				}
			}
			else
			{
				SmokeParticleInfo *pOther = &m_SmokeParticleInfos[pInfo->m_TradeIndex];
				assert(pOther->m_TradeIndex == i);
				
				// This makes sure the trade only gets updated once per frame.
				if(pInfo < pOther)
				{
					// Increment the trade clock..
					pInfo->m_TradeClock = (pOther->m_TradeClock += fTimeDelta);
					int x, y, z;
					GetParticleInfoXYZ(i, x, y, z);
					Vector myPos = GetSmokeParticlePos(x, y, z);
					
					int otherX, otherY, otherZ;
					GetParticleInfoXYZ(pInfo->m_TradeIndex, otherX, otherY, otherZ);
					Vector otherPos = GetSmokeParticlePos(otherX, otherY, otherZ);

					// Is the trade finished?
					if(pInfo->m_TradeClock >= pInfo->m_TradeDuration)
					{
						pInfo->m_TradeIndex = pOther->m_TradeIndex = -1;
						
						pInfo->m_pParticle->m_Pos = otherPos;
						pOther->m_pParticle->m_Pos = myPos;

						SmokeGrenadeParticle *temp = pInfo->m_pParticle;
						pInfo->m_pParticle = pOther->m_pParticle;
						pOther->m_pParticle = temp;
					}
					else
					{			
						// Ok, move them closer.
						float percent = (float)cos(pInfo->m_TradeClock * 2 * 1.57079632f / pInfo->m_TradeDuration);
						percent = percent * 0.5 + 0.5;
						
						pInfo->m_pParticle->m_FadeAlpha  = pInfo->m_FadeAlpha + (pOther->m_FadeAlpha - pInfo->m_FadeAlpha) * (1 - percent);
						pOther->m_pParticle->m_FadeAlpha = pInfo->m_FadeAlpha + (pOther->m_FadeAlpha - pInfo->m_FadeAlpha) * percent;

						InterpColor(pInfo->m_pParticle->m_Color,  pInfo->m_Color, pOther->m_Color, 1-percent);
						InterpColor(pOther->m_pParticle->m_Color, pInfo->m_Color, pOther->m_Color, percent);

						pInfo->m_pParticle->m_Pos  = myPos + (otherPos - myPos) * (1 - percent);
						pOther->m_pParticle->m_Pos = myPos + (otherPos - myPos) * percent;
					}
				}
			}
		}
	}
}