147 lines
3.8 KiB
C++
147 lines
3.8 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: Physics constraint entities
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//
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// $NoKeywords: $
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//===========================================================================//
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#ifndef PHYSCONSTRAINT_H
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#define PHYSCONSTRAINT_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "vphysics/constraints.h"
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struct hl_constraint_info_t
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{
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hl_constraint_info_t()
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{
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pObjects[0] = pObjects[1] = NULL;
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pGroup = NULL;
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anchorPosition[0].Init();
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anchorPosition[1].Init();
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swapped = false;
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massScale[0] = massScale[1] = 1.0f;
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}
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Vector anchorPosition[2];
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IPhysicsObject *pObjects[2];
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IPhysicsConstraintGroup *pGroup;
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float massScale[2];
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bool swapped;
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};
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abstract_class CPhysConstraint : public CLogicalEntity
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{
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DECLARE_CLASS( CPhysConstraint, CLogicalEntity );
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public:
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CPhysConstraint();
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~CPhysConstraint();
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DECLARE_DATADESC();
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void Spawn( void );
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void Precache( void );
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void Activate( void );
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void ClearStaticFlag( IPhysicsObject *pObj );
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virtual void Deactivate();
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void OnBreak( void );
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void InputBreak( inputdata_t &inputdata );
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void InputOnBreak( inputdata_t &inputdata );
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void InputTurnOn( inputdata_t &inputdata );
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void InputTurnOff( inputdata_t &inputdata );
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int DrawDebugTextOverlays();
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void DrawDebugGeometryOverlays();
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void GetBreakParams( constraint_breakableparams_t ¶ms, const hl_constraint_info_t &info );
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// the notify system calls this on the constrained entities - used to detect & follow teleports
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void NotifySystemEvent( CBaseEntity *pNotify, notify_system_event_t eventType, const notify_system_event_params_t ¶ms );
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// gets called at setup time on first init and restore
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virtual void OnConstraintSetup( hl_constraint_info_t &info );
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// return the internal constraint object (used by sound gadgets)
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inline IPhysicsConstraint *GetPhysConstraint() { return m_pConstraint; }
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string_t GetNameAttach1( void ){ return m_nameAttach1; }
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string_t GetNameAttach2( void ){ return m_nameAttach2; }
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protected:
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void GetConstraintObjects( hl_constraint_info_t &info );
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void SetupTeleportationHandling( hl_constraint_info_t &info );
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bool ActivateConstraint( void );
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virtual IPhysicsConstraint *CreateConstraint( IPhysicsConstraintGroup *pGroup, const hl_constraint_info_t &info ) = 0;
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IPhysicsConstraint *m_pConstraint;
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// These are "template" values used to construct the hinge
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string_t m_nameAttach1;
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string_t m_nameAttach2;
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string_t m_breakSound;
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string_t m_nameSystem;
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float m_forceLimit;
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float m_torqueLimit;
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unsigned int m_teleportTick;
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float m_minTeleportDistance;
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COutputEvent m_OnBreak;
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};
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//-----------------------------------------------------------------------------
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// Purpose: Fixed breakable constraint
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//-----------------------------------------------------------------------------
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class CPhysFixed : public CPhysConstraint
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{
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DECLARE_CLASS( CPhysFixed, CPhysConstraint );
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public:
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IPhysicsConstraint *CreateConstraint( IPhysicsConstraintGroup *pGroup, const hl_constraint_info_t &info );
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// just for debugging - move to the position of the reference entity
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void MoveToRefPosition()
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{
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if ( m_pConstraint )
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{
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matrix3x4_t xformRef;
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m_pConstraint->GetConstraintTransform( &xformRef, NULL );
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IPhysicsObject *pObj = m_pConstraint->GetReferenceObject();
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if ( pObj && pObj->IsMoveable() )
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{
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Vector pos, posWorld;
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MatrixPosition( xformRef, pos );
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pObj->LocalToWorld(&posWorld, pos);
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SetAbsOrigin(posWorld);
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}
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}
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}
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int DrawDebugTextOverlays()
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{
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if ( m_debugOverlays & OVERLAY_TEXT_BIT )
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{
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MoveToRefPosition();
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}
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return BaseClass::DrawDebugTextOverlays();
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}
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void DrawDebugGeometryOverlays()
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{
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if ( m_debugOverlays & (OVERLAY_BBOX_BIT|OVERLAY_PIVOT_BIT|OVERLAY_ABSBOX_BIT) )
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{
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MoveToRefPosition();
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}
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BaseClass::DrawDebugGeometryOverlays();
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}
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};
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#endif // PHYSCONSTRAINT_H
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