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129 lines
3.4 KiB
C++
129 lines
3.4 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: Simple model entity that randomly moves and changes direction
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// when activated.
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//
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//=============================================================================//
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#include "cbase.h"
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class CMyModelEntity : public CBaseAnimating
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{
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public:
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DECLARE_CLASS( CMyModelEntity, CBaseAnimating );
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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 MoveThink( void );
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// Input function
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void InputToggle( inputdata_t &inputData );
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private:
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bool m_bActive;
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float m_flNextChangeTime;
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};
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LINK_ENTITY_TO_CLASS( my_model_entity, CMyModelEntity );
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// Start of our data description for the class
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BEGIN_DATADESC( CMyModelEntity )
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// Save/restore our active state
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DEFINE_FIELD( m_bActive, FIELD_BOOLEAN ),
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DEFINE_FIELD( m_flNextChangeTime, FIELD_TIME ),
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// Links our input name from Hammer to our input member function
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DEFINE_INPUTFUNC( FIELD_VOID, "Toggle", InputToggle ),
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// Declare our think function
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DEFINE_THINKFUNC( MoveThink ),
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END_DATADESC()
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// Name of our entity's model
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#define ENTITY_MODEL "models/gibs/airboat_broken_engine.mdl"
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//-----------------------------------------------------------------------------
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// Purpose: Precache assets used by the entity
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//-----------------------------------------------------------------------------
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void CMyModelEntity::Precache( void )
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{
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PrecacheModel( ENTITY_MODEL );
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}
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//-----------------------------------------------------------------------------
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// Purpose: Sets up the entity's initial state
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//-----------------------------------------------------------------------------
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void CMyModelEntity::Spawn( void )
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{
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Precache();
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SetModel( ENTITY_MODEL );
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SetSolid( SOLID_BBOX );
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UTIL_SetSize( this, -Vector(20,20,20), Vector(20,20,20) );
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m_bActive = false;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Think function to randomly move the entity
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//-----------------------------------------------------------------------------
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void CMyModelEntity::MoveThink( void )
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{
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// See if we should change direction again
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if ( m_flNextChangeTime < gpGlobals->curtime )
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{
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// Randomly take a new direction and speed
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Vector vecNewVelocity = RandomVector( -64.0f, 64.0f );
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SetAbsVelocity( vecNewVelocity );
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// Randomly change it again within one to three seconds
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m_flNextChangeTime = gpGlobals->curtime + random->RandomFloat( 1.0f, 3.0f );
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}
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// Snap our facing to where we're heading
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Vector velFacing = GetAbsVelocity();
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QAngle angFacing;
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VectorAngles( velFacing, angFacing );
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SetAbsAngles( angFacing );
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// Think every 20Hz
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SetNextThink( gpGlobals->curtime + 0.05f );
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}
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//-----------------------------------------------------------------------------
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// Purpose: Toggle the movement of the entity
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//-----------------------------------------------------------------------------
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void CMyModelEntity::InputToggle( inputdata_t &inputData )
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{
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// Toggle our active state
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if ( !m_bActive )
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{
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// Start thinking
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SetThink( &CMyModelEntity::MoveThink );
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SetNextThink( gpGlobals->curtime + 0.05f );
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// Start flying
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SetMoveType( MOVETYPE_FLY );
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// Set our next time for changing our speed and direction
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m_flNextChangeTime = gpGlobals->curtime;
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m_bActive = true;
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}
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else
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{
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// Stop thinking
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SetThink( NULL );
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// Stop moving
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SetAbsVelocity( vec3_origin );
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SetMoveType( MOVETYPE_NONE );
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m_bActive = false;
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}
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}
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