Authoring a Logical Entity/Code
< Authoring a Logical Entity(Redirected from Logical Entity Code)
//===== Copyright © 1996-2005, Valve Corporation, All rights reserved. ========
//
// Purpose: Simple logical entity that counts up to a threshold value, then
// fires an output when reached.
//
//=============================================================================
#include "cbase.h"
class CMyLogicalEntity : public CLogicalEntity
{
public:
DECLARE_CLASS( CMyLogicalEntity, CLogicalEntity );
DECLARE_DATADESC();
// Constructor
CMyLogicalEntity ()
{
m_nCounter = 0;
}
// Input function
void InputTick( inputdata_t &inputData );
private:
int m_nThreshold; // Count at which to fire our output
int m_nCounter; // Internal counter
COutputEvent m_OnThreshold; // Output event when the counter reaches the threshold
};
LINK_ENTITY_TO_CLASS( my_logical_entity, CMyLogicalEntity );
// Start of our data description for the class
BEGIN_DATADESC( CMyLogicalEntity )
// For save/load
DEFINE_FIELD( m_nCounter, FIELD_INTEGER ),
// Links our member variable to our keyvalue from Hammer
DEFINE_KEYFIELD( m_nThreshold, FIELD_INTEGER, "threshold" ),
// Links our input name from Hammer to our input member function
DEFINE_INPUTFUNC( FIELD_VOID, "Tick", InputTick ),
// Links our output member to the output name used by Hammer
DEFINE_OUTPUT( m_OnThreshold, "OnThreshold" ),
END_DATADESC()
//-----------------------------------------------------------------------------
// Purpose: Handle a tick input from another entity
//-----------------------------------------------------------------------------
void CMyLogicalEntity::InputTick( inputdata_t &inputData )
{
// Increment our counter
m_nCounter++;
// See if we've met or crossed our threshold value
if ( m_nCounter >= m_nThreshold )
{
// Fire an output event
m_OnThreshold.FireOutput( inputData.pActivator, this );
// Reset our counter
m_nCounter = 0;
}
}