404 lines
12 KiB
C++
404 lines
12 KiB
C++
//========= Copyright © 1996-2005, Valve Corporation, All rights reserved. ============//
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//
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// Purpose: Renders a cone for spotlight entities. Only renders when the parent
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// entity is selected.
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//
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//=============================================================================//
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#include "stdafx.h"
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#include "Box3D.h"
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#include "fgdlib/HelperInfo.h"
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#include "MapDefs.h" // dvs: For COORD_NOTINIT
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#include "MapEntity.h"
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#include "MapFrustum.h"
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#include "Render3D.h"
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#include "Material.h"
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#include "materialsystem/IMaterialSystem.h"
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#include "TextureSystem.h"
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#include "hammer.h"
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// memdbgon must be the last include file in a .cpp file!!!
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#include <tier0/memdbgon.h>
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IMPLEMENT_MAPCLASS(CMapFrustum)
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//-----------------------------------------------------------------------------
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// Purpose: Factory function. Used for creating a CMapFrustum helper from a
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// set of string parameters from the FGD file.
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// Input : *pInfo - Pointer to helper info class which gives us information
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// about how to create the helper.
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// Output : Returns a pointer to the helper, NULL if an error occurs.
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//-----------------------------------------------------------------------------
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CMapClass *CMapFrustum::Create(CHelperInfo *pHelperInfo, CMapEntity *pParent)
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{
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CMapFrustum *new1 = new CMapFrustum;
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if( new1 != NULL )
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{
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const char *pszKeyName;
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// The first parameter should be the fov key name.
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pszKeyName = pHelperInfo->GetParameter(0);
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if ( pszKeyName )
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V_strncpy( new1->m_szFOVKeyName, pszKeyName, sizeof( new1->m_szFOVKeyName ) );
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// Second parameter should be the near plane name.
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pszKeyName = pHelperInfo->GetParameter(1);
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if ( pszKeyName )
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V_strncpy( new1->m_szNearPlaneKeyName, pszKeyName, sizeof( new1->m_szNearPlaneKeyName ) );
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// Third parameter should be the far plane name.
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pszKeyName = pHelperInfo->GetParameter(2);
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if ( pszKeyName )
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V_strncpy( new1->m_szFarPlaneKeyName, pszKeyName, sizeof( new1->m_szFarPlaneKeyName ) );
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pszKeyName = pHelperInfo->GetParameter(3);
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if (pszKeyName != NULL)
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{
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V_strncpy( new1->m_szColorKeyName, pszKeyName, sizeof( new1->m_szColorKeyName ) );
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}
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pszKeyName = pHelperInfo->GetParameter(4);
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if (pszKeyName != NULL)
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{
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new1->m_flPitchScale = Q_atof( pszKeyName );
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}
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else
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{
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new1->m_flPitchScale = 1.0f;
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}
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}
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return new1;
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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CMapFrustum::CMapFrustum(void)
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{
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// Set default parameter names.
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V_strncpy( m_szFOVKeyName, "_fov", sizeof( m_szFOVKeyName ) );
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V_strncpy( m_szNearPlaneKeyName, "_NearPlane", sizeof( m_szNearPlaneKeyName ) );
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V_strncpy( m_szFarPlaneKeyName, "_FarPlane", sizeof( m_szFarPlaneKeyName ) );
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V_strncpy( m_szColorKeyName, "_light", sizeof( m_szColorKeyName ) );
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m_flFOV = 90;
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m_flNearPlane = 10;
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m_flFarPlane = 200;
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m_flPitchScale = -1;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Destructor. Deletes faces allocated by BuildCone.
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//-----------------------------------------------------------------------------
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CMapFrustum::~CMapFrustum(void)
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{
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for (int i = 0; i < m_Faces.Count(); i++)
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{
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CMapFace *pFace = m_Faces.Element(i);
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delete pFace;
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}
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}
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CMapFace* CMapFrustum::CreateMapFace( const Vector &v1, const Vector &v2, const Vector &v3, const Vector &v4, float flAlpha )
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{
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Assert( IsFinite(v1.x) && IsFinite(v1.y) && IsFinite(v1.z) );
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Vector points[4] = {v1,v2,v3,v4};
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CMapFace *pFace = new CMapFace;
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pFace->SetRenderColor( r, g, b );
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pFace->SetRenderAlpha( flAlpha );
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pFace->CreateFace( points, 4 );
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pFace->RenderUnlit(true);
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return pFace;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Builds the light cone faces in local space. Does NOT call CalcBounds,
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// because that CalcBounds updates the parent, which causes problems
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// in the undo system.
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//-----------------------------------------------------------------------------
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void CMapFrustum::BuildFrustumFaces(void)
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{
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//
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// Delete the current face list.
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//
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for (int i = 0; i < m_Faces.Count(); i++)
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{
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CMapFace *pFace = m_Faces.Element(i);
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delete pFace;
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}
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m_Faces.RemoveAll();
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// 6 total faces. 4 on the sides and 2 caps.
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Vector vNearFace[4], vFarFace[4];
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float flHalfFOV = m_flFOV / 2.0f;
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flHalfFOV = clamp( flHalfFOV, 0.01f, 89.0f );
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float flScaleFactor = tan( DEG2RAD( flHalfFOV ) );
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float flBaseAlpha = 180;
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vNearFace[0].Init( m_flNearPlane, -flScaleFactor*m_flNearPlane, -flScaleFactor*m_flNearPlane );
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vNearFace[1].Init( m_flNearPlane, +flScaleFactor*m_flNearPlane, -flScaleFactor*m_flNearPlane );
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vNearFace[2].Init( m_flNearPlane, +flScaleFactor*m_flNearPlane, +flScaleFactor*m_flNearPlane );
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vNearFace[3].Init( m_flNearPlane, -flScaleFactor*m_flNearPlane, +flScaleFactor*m_flNearPlane );
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vFarFace[0].Init( m_flFarPlane, -flScaleFactor*m_flFarPlane, -flScaleFactor*m_flFarPlane );
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vFarFace[1].Init( m_flFarPlane, +flScaleFactor*m_flFarPlane, -flScaleFactor*m_flFarPlane );
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vFarFace[2].Init( m_flFarPlane, +flScaleFactor*m_flFarPlane, +flScaleFactor*m_flFarPlane );
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vFarFace[3].Init( m_flFarPlane, -flScaleFactor*m_flFarPlane, +flScaleFactor*m_flFarPlane );
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// Build the near and far faces.
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m_Faces.AddToTail( CreateMapFace( vNearFace[0], vNearFace[1], vNearFace[2], vNearFace[3], flBaseAlpha ) );
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m_Faces.AddToTail( CreateMapFace( vFarFace[3], vFarFace[2], vFarFace[1], vFarFace[0], flBaseAlpha ) );
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// Build the 4 cap faces.
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for ( int i=0; i < 4; i++ )
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{
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m_Faces.AddToTail( CreateMapFace( vNearFace[i], vFarFace[i], vFarFace[(i+1)%4], vNearFace[(i+1)%4], flBaseAlpha ) );
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}
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// Also build some really translucent faces from the origin to the near plane.
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float flOriginFacesAlpha = 40.0f;
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for ( int i=0; i < 4; i++ )
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{
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m_Faces.AddToTail( CreateMapFace( Vector(0,0,0), vNearFace[i], vNearFace[(i+1)%4], Vector(0,0,0), flOriginFacesAlpha ) );
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : bFullUpdate -
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//-----------------------------------------------------------------------------
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void CMapFrustum::CalcBounds(BOOL bFullUpdate)
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{
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CMapClass::CalcBounds(bFullUpdate);
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//
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// HACK: Update our origin to stick to our parent.
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//
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if (m_pParent != NULL)
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{
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GetParent()->GetOrigin(m_Origin);
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}
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//
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// Pretend to be very small for the 2D view. Won't be necessary when 2D
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// rendering is done in the map classes.
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//
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m_Render2DBox.ResetBounds();
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m_Render2DBox.UpdateBounds(m_Origin);
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SetCullBoxFromFaceList( &m_Faces );
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Output : CMapClass
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//-----------------------------------------------------------------------------
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CMapClass *CMapFrustum::Copy(bool bUpdateDependencies)
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{
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CMapFrustum *pCopy = new CMapFrustum;
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if (pCopy != NULL)
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{
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pCopy->CopyFrom(this, bUpdateDependencies);
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}
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return(pCopy);
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : pObject -
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// Output : CMapClass
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//-----------------------------------------------------------------------------
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CMapClass *CMapFrustum::CopyFrom(CMapClass *pObject, bool bUpdateDependencies)
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{
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Assert(pObject->IsMapClass(MAPCLASS_TYPE(CMapFrustum)));
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CMapFrustum *pFrom = (CMapFrustum *)pObject;
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CMapClass::CopyFrom(pObject, bUpdateDependencies);
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m_flFOV = pFrom->m_flFOV;
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m_flNearPlane = pFrom->m_flNearPlane;
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m_flFarPlane = pFrom->m_flFarPlane;
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m_Angles = pFrom->m_Angles;
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m_flPitchScale = pFrom->m_flPitchScale;
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V_strncpy( m_szFOVKeyName, pFrom->m_szFOVKeyName, sizeof( m_szFOVKeyName ) );
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V_strncpy( m_szNearPlaneKeyName, pFrom->m_szNearPlaneKeyName, sizeof( m_szNearPlaneKeyName ) );
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V_strncpy( m_szFarPlaneKeyName, pFrom->m_szFarPlaneKeyName, sizeof( m_szFarPlaneKeyName ) );
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V_strncpy( m_szColorKeyName, pFrom->m_szColorKeyName, sizeof( m_szColorKeyName ) );
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BuildFrustumFaces();
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return(this);
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}
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//-----------------------------------------------------------------------------
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// Purpose: Notifies that this object's parent entity has had a key value change.
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// Input : szKey - The key that changed.
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// szValue - The new value of the key.
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//-----------------------------------------------------------------------------
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void CMapFrustum::OnParentKeyChanged(const char *szKey, const char *szValue)
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{
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bool bRebuild = true;
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if (!stricmp(szKey, "angles"))
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{
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sscanf(szValue, "%f %f %f", &m_Angles[PITCH], &m_Angles[YAW], &m_Angles[ROLL]);
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}
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else if (!stricmp(szKey, m_szColorKeyName))
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{
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int nRed;
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int nGreen;
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int nBlue;
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sscanf(szValue, "%d %d %d", &nRed, &nGreen, &nBlue);
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r = nRed;
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g = nGreen;
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b = nBlue;
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}
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else if (!stricmp(szKey, m_szFOVKeyName))
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{
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m_flFOV = atof(szValue);
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}
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else if (!stricmp(szKey, m_szNearPlaneKeyName))
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{
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m_flNearPlane = atof(szValue);
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}
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else if (!stricmp(szKey, m_szFarPlaneKeyName))
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{
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m_flFarPlane = atof(szValue);
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}
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else
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{
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bRebuild = false;
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}
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if (bRebuild)
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{
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BuildFrustumFaces();
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PostUpdate(Notify_Changed);
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose: Called after the entire map has been loaded. This allows the object
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// to perform any linking with other map objects or to do other operations
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// that require all world objects to be present.
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// Input : pWorld - The world that we are in.
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//-----------------------------------------------------------------------------
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void CMapFrustum::PostloadWorld(CMapWorld *pWorld)
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{
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CMapClass::PostloadWorld(pWorld);
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BuildFrustumFaces();
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CalcBounds();
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : pRender -
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//-----------------------------------------------------------------------------
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void CMapFrustum::Render3D(CRender3D *pRender)
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{
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if (m_pParent->IsSelected())
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{
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CMatRenderContextPtr pRenderContext( MaterialSystemInterface() );
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pRenderContext->MatrixMode(MATERIAL_MODEL);
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pRenderContext->PushMatrix();
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pRenderContext->Translate(m_Origin[0], m_Origin[1], m_Origin[2]);
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QAngle Angles;
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GetAngles(Angles);
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pRenderContext->Rotate(Angles[YAW], 0, 0, 1);
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pRenderContext->Rotate(m_flPitchScale * Angles[PITCH], 0, -1, 0);
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pRenderContext->Rotate(Angles[ROLL], 1, 0, 0);
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if (
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(pRender->GetCurrentRenderMode() != RENDER_MODE_LIGHT_PREVIEW2) &&
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(pRender->GetCurrentRenderMode() != RENDER_MODE_LIGHT_PREVIEW_RAYTRACED) &&
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(GetSelectionState() != SELECT_MODIFY )
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)
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{
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// Render the cone faces flatshaded.
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pRender->PushRenderMode( RENDER_MODE_TRANSLUCENT_FLAT );
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for (int i = 0; i < m_Faces.Count(); i++)
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{
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CMapFace *pFace = m_Faces.Element(i);
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pFace->Render3D(pRender);
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}
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pRender->PopRenderMode();
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}
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//
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// Render the cone faces in yellow wireframe (on top)
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//
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pRender->PushRenderMode( RENDER_MODE_WIREFRAME );
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for (int i = 0; i < m_Faces.Count(); i++)
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{
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CMapFace *pFace = m_Faces.Element(i);
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pFace->Render3D(pRender);
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}
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//
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// Restore the default rendering mode.
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//
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pRender->PopRenderMode();
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pRenderContext->PopMatrix();
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : File -
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// bRMF -
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// Output : int
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//-----------------------------------------------------------------------------
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int CMapFrustum::SerializeRMF(std::fstream &File, BOOL bRMF)
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{
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return(0);
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : File -
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// bRMF -
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// Output : int
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//-----------------------------------------------------------------------------
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int CMapFrustum::SerializeMAP(std::fstream &File, BOOL bRMF)
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{
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return(0);
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}
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void CMapFrustum::GetAngles(QAngle& Angles)
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{
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Angles = m_Angles;
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}
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