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| author | Joe Ludwig <[email protected]> | 2013-06-26 15:22:04 -0700 |
|---|---|---|
| committer | Joe Ludwig <[email protected]> | 2013-06-26 15:22:04 -0700 |
| commit | 39ed87570bdb2f86969d4be821c94b722dc71179 (patch) | |
| tree | abc53757f75f40c80278e87650ea92808274aa59 /mp/src/game/client/particle_simple3d.cpp | |
| download | source-sdk-2013-39ed87570bdb2f86969d4be821c94b722dc71179.tar.xz source-sdk-2013-39ed87570bdb2f86969d4be821c94b722dc71179.zip | |
First version of the SOurce SDK 2013
Diffstat (limited to 'mp/src/game/client/particle_simple3d.cpp')
| -rw-r--r-- | mp/src/game/client/particle_simple3d.cpp | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/mp/src/game/client/particle_simple3d.cpp b/mp/src/game/client/particle_simple3d.cpp new file mode 100644 index 00000000..c547db56 --- /dev/null +++ b/mp/src/game/client/particle_simple3d.cpp @@ -0,0 +1,134 @@ +//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose:
+//
+// $Workfile: $
+// $NoKeywords: $
+//=============================================================================//
+#include "cbase.h"
+#include "particle_simple3d.h"
+#include "view.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+// Defined in pm_math.c
+float anglemod( float a );
+
+//------------------------------------------------------------------------------
+// Purpose :
+// Input :
+// Output :
+//------------------------------------------------------------------------------
+CSmartPtr<CSimple3DEmitter> CSimple3DEmitter::Create( const char *pDebugName )
+{
+ CSimple3DEmitter* pSimple3DEmitter = new CSimple3DEmitter( pDebugName );
+
+ // Do in world space
+ pSimple3DEmitter->m_ParticleEffect.SetEffectCameraSpace( false );
+ return pSimple3DEmitter;
+}
+
+
+void CSimple3DEmitter::SimulateParticles( CParticleSimulateIterator *pIterator )
+{
+ Particle3D *pParticle = (Particle3D*)pIterator->GetFirst();
+ while ( pParticle )
+ {
+ const float timeDelta = pIterator->GetTimeDelta();
+
+ //Should this particle die?
+ pParticle->m_flLifeRemaining -= timeDelta;
+
+ if ( pParticle->IsDead() )
+ {
+ pIterator->RemoveParticle( pParticle );
+ }
+ else
+ {
+ // Angular rotation
+ pParticle->m_vAngles.x += pParticle->m_flAngSpeed * timeDelta;
+ pParticle->m_vAngles.y += pParticle->m_flAngSpeed * timeDelta;
+ pParticle->m_vAngles.z += pParticle->m_flAngSpeed * timeDelta;
+
+ //Simulate the movement with collision
+ trace_t trace;
+ m_ParticleCollision.MoveParticle( pParticle->m_Pos, pParticle->m_vecVelocity, &pParticle->m_flAngSpeed, timeDelta, &trace );
+
+ // ---------------------------------------
+ // Decay towards flat
+ // ---------------------------------------
+ if (pParticle->m_flAngSpeed == 0 || trace.fraction != 1.0)
+ {
+ pParticle->m_vAngles.x = anglemod(pParticle->m_vAngles.x);
+ if (pParticle->m_vAngles.x < 180)
+ {
+ if (fabs(pParticle->m_vAngles.x - 90) > 0.5)
+ {
+ pParticle->m_vAngles.x = 0.5*pParticle->m_vAngles.x + 46;
+ }
+ }
+ else
+ {
+ if (fabs(pParticle->m_vAngles.x - 270) > 0.5)
+ {
+ pParticle->m_vAngles.x = 0.5*pParticle->m_vAngles.x + 135;
+ }
+ }
+
+ pParticle->m_vAngles.y = anglemod(pParticle->m_vAngles.y);
+ if (fabs(pParticle->m_vAngles.y) > 0.5)
+ {
+ pParticle->m_vAngles.y = 0.5*pParticle->m_vAngles.z;
+ }
+ }
+ }
+
+ pParticle = (Particle3D*)pIterator->GetNext();
+ }
+}
+
+
+void CSimple3DEmitter::RenderParticles( CParticleRenderIterator *pIterator )
+{
+ const Particle3D *pParticle = (const Particle3D *)pIterator->GetFirst();
+ while ( pParticle )
+ {
+ float sortKey = CurrentViewForward().Dot( CurrentViewOrigin() - pParticle->m_Pos );
+
+ // -------------------------------------------------------
+ // Set color based on direction towards camera
+ // -------------------------------------------------------
+ Vector color;
+ Vector vFaceNorm;
+ Vector vCameraToFace = (pParticle->m_Pos - CurrentViewOrigin());
+ AngleVectors(pParticle->m_vAngles,&vFaceNorm);
+ float flFacing = DotProduct(vCameraToFace,vFaceNorm);
+
+ if (flFacing <= 0)
+ {
+ color[0] = pParticle->m_uchFrontColor[0] / 255.0f;
+ color[1] = pParticle->m_uchFrontColor[1] / 255.0f;
+ color[2] = pParticle->m_uchFrontColor[2] / 255.0f;
+ }
+ else
+ {
+ color[0] = pParticle->m_uchBackColor[0] / 255.0f;
+ color[1] = pParticle->m_uchBackColor[1] / 255.0f;
+ color[2] = pParticle->m_uchBackColor[2] / 255.0f;
+ }
+
+ //Render it in world space
+ RenderParticle_ColorSizeAngles(
+ pIterator->GetParticleDraw(),
+ pParticle->m_Pos,
+ color,
+ pParticle->GetFadeFraction(),
+ pParticle->m_uchSize,
+ pParticle->m_vAngles);
+
+ pParticle = (const Particle3D *)pIterator->GetNext( sortKey );
+ }
+}
+
+
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