1HEADmaster

1 files changed, 288 insertions, 0 deletions

diff --git a/game/client/fx_discreetline.cpp b/game/client/fx_discreetline.cpp
new file mode 100644
index 0000000..019e729
--- /dev/null
+++ b/game/client/fx_discreetline.cpp
@@ -0,0 +1,288 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $Workfile:     $
+// $Date:         $
+//
+//-----------------------------------------------------------------------------
+// $Log: $
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "cbase.h"
+#include "fx_discreetline.h"
+#include "materialsystem/imaterial.h"
+#include "materialsystem/imesh.h"
+#include "view.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+/*
+==================================================
+CFXLine
+==================================================
+*/
+
+CFXDiscreetLine::CFXDiscreetLine( const char *name, const Vector& start, const Vector& direction, 
+	float velocity, float length, float clipLength, float scale, float life, const char *shader )
+: CClientSideEffect( name )
+{
+	assert( materials );
+	if ( materials == NULL )
+		return;
+
+	// Create a material...
+	m_pMaterial = materials->FindMaterial( shader, TEXTURE_GROUP_CLIENT_EFFECTS );
+	m_pMaterial->IncrementReferenceCount();
+
+	m_vecOrigin			= start;
+	m_vecDirection		= direction;
+	m_fVelocity			= velocity;
+	m_fClipLength		= clipLength;
+	m_fScale			= scale;
+	m_fLife				= life;
+	m_fStartTime		= 0.0f;
+	m_fLength			= length;
+}
+
+CFXDiscreetLine::~CFXDiscreetLine( void )
+{
+	Destroy();
+}
+
+// Does extra calculations to make them more visible over distance
+ConVar	tracer_extra( "tracer_extra", "1" );
+
+/*
+==================================================
+Draw
+==================================================
+*/
+
+void CFXDiscreetLine::Draw( double frametime )
+{
+	Vector			lineDir, viewDir, cross;
+
+	Vector			vecEnd, vecStart;
+	Vector tmp;
+
+	// Update the effect
+	Update( frametime );
+
+	// Calculate our distance along our path
+	float	sDistance = m_fVelocity * m_fStartTime;
+	float	eDistance = sDistance - m_fLength;
+	
+	//Clip to start
+	sDistance = MAX( 0.0f, sDistance );
+	eDistance = MAX( 0.0f, eDistance );
+
+	if ( ( sDistance == 0.0f ) && ( eDistance == 0.0f ) )
+		return;
+
+	// Clip it
+	if ( m_fClipLength != 0.0f )
+	{
+		sDistance = MIN( sDistance, m_fClipLength );
+		eDistance = MIN( eDistance, m_fClipLength );
+	}
+
+	// Get our delta to calculate the tc offset
+	float	dDistance	= fabs( sDistance - eDistance );
+	float	dTotal		= ( m_fLength != 0.0f ) ? m_fLength : 0.01f;
+	float	fOffset		= ( dDistance / dTotal );
+
+	// Find our points along our path
+	VectorMA( m_vecOrigin, sDistance, m_vecDirection, vecEnd );
+	VectorMA( m_vecOrigin, eDistance, m_vecDirection, vecStart );
+
+	//Setup our info for drawing the line
+	VectorSubtract( vecEnd, vecStart, lineDir );
+	VectorSubtract( vecEnd, CurrentViewOrigin(), viewDir );
+	
+	cross = lineDir.Cross( viewDir );
+	VectorNormalize( cross );
+
+	CMeshBuilder meshBuilder;
+	IMesh *pMesh;
+
+	CMatRenderContextPtr pRenderContext( materials );
+		
+	// Better, more visible tracers
+	if ( tracer_extra.GetBool() )
+	{
+		float flScreenWidth = ScreenWidth();
+		float flHalfScreenWidth = flScreenWidth * 0.5f;
+		
+		float zCoord = CurrentViewForward().Dot( vecStart - CurrentViewOrigin() );
+		float flScreenSpaceWidth = m_fScale * flHalfScreenWidth / zCoord;
+
+		float flAlpha;
+		float flScale;
+
+		if ( flScreenSpaceWidth < 0.5f )
+		{
+			flAlpha = RemapVal( flScreenSpaceWidth, 0.25f, 2.0f, 0.3f, 1.0f );
+			flAlpha = clamp( flAlpha, 0.25f, 1.0f );
+			flScale = 0.5f * zCoord / flHalfScreenWidth;
+		}
+		else
+		{
+			flAlpha = 1.0f;
+			flScale = m_fScale;
+		}
+
+		//Bind the material
+		pMesh = pRenderContext->GetDynamicMesh( true, NULL, NULL, m_pMaterial );
+
+		meshBuilder.Begin( pMesh, MATERIAL_QUADS, 2 );
+
+		float color = (int) 255.0f * flAlpha;
+
+		//FIXME: for now no coloration
+		VectorMA( vecStart, -flScale, cross, tmp );
+		meshBuilder.Position3fv( tmp.Base() );
+		meshBuilder.TexCoord2f( 0, 1.0f, 0.0f );
+		meshBuilder.Color4ub( color, color, color, 255 );
+		meshBuilder.Normal3fv( cross.Base() );
+		meshBuilder.AdvanceVertex();
+
+		VectorMA( vecStart,  flScale, cross, tmp );
+		meshBuilder.Position3fv( tmp.Base() );
+		meshBuilder.TexCoord2f( 0, 0.0f, 0.0f );
+		meshBuilder.Color4ub( color, color, color, 255 );
+		meshBuilder.Normal3fv( cross.Base() );
+		meshBuilder.AdvanceVertex();
+
+		VectorMA( vecEnd, flScale, cross, tmp );
+		meshBuilder.Position3fv( tmp.Base() );
+		meshBuilder.TexCoord2f( 0, 0.0f, fOffset );
+		meshBuilder.Color4ub( color, color, color, 255 );
+		meshBuilder.Normal3fv( cross.Base() );
+		meshBuilder.AdvanceVertex();
+
+		VectorMA( vecEnd, -flScale, cross, tmp );
+		meshBuilder.Position3fv( tmp.Base() );
+		meshBuilder.TexCoord2f( 0, 1.0f, fOffset );
+		meshBuilder.Color4ub( color, color, color, 255 );
+		meshBuilder.Normal3fv( cross.Base() );
+		meshBuilder.AdvanceVertex();
+
+		flScale = flScale * 2.0f;
+		color = (int) 64.0f * flAlpha;
+
+		// Soft outline
+		VectorMA( vecStart, -flScale, cross, tmp );
+		meshBuilder.Position3fv( tmp.Base() );
+		meshBuilder.TexCoord2f( 0, 1.0f, 0.0f );
+		meshBuilder.Color4ub( color, color, color, 255 );
+		meshBuilder.Normal3fv( cross.Base() );
+		meshBuilder.AdvanceVertex();
+
+		VectorMA( vecStart,  flScale, cross, tmp );
+		meshBuilder.Position3fv( tmp.Base() );
+		meshBuilder.TexCoord2f( 0, 0.0f, 0.0f );
+		meshBuilder.Color4ub( color, color, color, 255 );
+		meshBuilder.Normal3fv( cross.Base() );
+		meshBuilder.AdvanceVertex();
+
+		VectorMA( vecEnd, flScale, cross, tmp );
+		meshBuilder.Position3fv( tmp.Base() );
+		meshBuilder.TexCoord2f( 0, 0.0f, fOffset );
+		meshBuilder.Color4ub( color, color, color, 255 );
+		meshBuilder.Normal3fv( cross.Base() );
+		meshBuilder.AdvanceVertex();
+
+		VectorMA( vecEnd, -flScale, cross, tmp );
+		meshBuilder.Position3fv( tmp.Base() );
+		meshBuilder.TexCoord2f( 0, 1.0f, fOffset );
+		meshBuilder.Color4ub( color, color, color, 255 );
+		meshBuilder.Normal3fv( cross.Base() );
+		meshBuilder.AdvanceVertex();
+	}
+	else
+	{
+		//Bind the material
+		pMesh = pRenderContext->GetDynamicMesh( true, NULL, NULL, m_pMaterial );
+
+		meshBuilder.Begin( pMesh, MATERIAL_QUADS, 1 );
+
+		//FIXME: for now no coloration
+		VectorMA( vecStart, -m_fScale, cross, tmp );
+		meshBuilder.Position3fv( tmp.Base() );
+		meshBuilder.TexCoord2f( 0, 1.0f, 0.0f );
+		meshBuilder.Color4ub( 255, 255, 255, 255 );
+		meshBuilder.Normal3fv( cross.Base() );
+		meshBuilder.AdvanceVertex();
+
+		VectorMA( vecStart,  m_fScale, cross, tmp );
+		meshBuilder.Position3fv( tmp.Base() );
+		meshBuilder.TexCoord2f( 0, 0.0f, 0.0f );
+		meshBuilder.Color4ub( 255, 255, 255, 255 );
+		meshBuilder.Normal3fv( cross.Base() );
+		meshBuilder.AdvanceVertex();
+
+		VectorMA( vecEnd, m_fScale, cross, tmp );
+		meshBuilder.Position3fv( tmp.Base() );
+		meshBuilder.TexCoord2f( 0, 0.0f, fOffset );
+		meshBuilder.Color4ub( 255, 255, 255, 255 );
+		meshBuilder.Normal3fv( cross.Base() );
+		meshBuilder.AdvanceVertex();
+
+		VectorMA( vecEnd, -m_fScale, cross, tmp );
+		meshBuilder.Position3fv( tmp.Base() );
+		meshBuilder.TexCoord2f( 0, 1.0f, fOffset );
+		meshBuilder.Color4ub( 255, 255, 255, 255 );
+		meshBuilder.Normal3fv( cross.Base() );
+		meshBuilder.AdvanceVertex();
+	}
+
+	meshBuilder.End();
+	pMesh->Draw();
+}
+
+/*
+==================================================
+IsActive
+==================================================
+*/
+
+bool CFXDiscreetLine::IsActive( void )
+{
+	return ( m_fLife > 0.0 ) ? true : false;
+}
+
+/*
+==================================================
+Destroy
+==================================================
+*/
+
+void CFXDiscreetLine::Destroy( void )
+{
+	//Release the material
+	if ( m_pMaterial != NULL )
+	{
+		m_pMaterial->DecrementReferenceCount();
+		m_pMaterial = NULL;
+	}
+}
+
+/*
+==================================================
+Update
+==================================================
+*/
+
+void CFXDiscreetLine::Update( double frametime )
+{
+	m_fStartTime += frametime;
+	m_fLife -= frametime;
+
+	//Move our end points
+	//VectorMA( m_vecStart, frametime, m_vecStartVelocity, m_vecStart );
+	//VectorMA( m_vecEnd, frametime, m_vecStartVelocity, m_vecEnd );
+}
+