/***
*
*	Copyright (c) 1996-2002, Valve LLC. All rights reserved.
*	
*	This product contains software technology licensed from Id 
*	Software, Inc. ("Id Technology").  Id Technology (c) 1996 Id Software, Inc. 
*	All Rights Reserved.
*
*   This source code contains proprietary and confidential information of
*   Valve LLC and its suppliers.  Access to this code is restricted to
*   persons who have executed a written SDK license with Valve.  Any access,
*   use or distribution of this code by or to any unlicensed person is illegal.
*
****/
//=========================================================
// Grinman - unexplained entity.
//=========================================================
#include	"extdll.h"
#include	"util.h"
#include	"cbase.h"
#include	"monsters.h"
#include	"schedule.h"
#include	"weapons.h"

//=========================================================
// Monster's Anim Events Go Here
//=========================================================

class CGrinman : public CBaseMonster
{
public:
	void Spawn( void );
	void Precache( void );
	void SetYawSpeed( void );
	int  Classify ( void );
	void HandleAnimEvent( MonsterEvent_t *pEvent );
	int ISoundMask ( void );

	void DeclineFollowing( void );

	int	Save( CSave &save ); 
	int Restore( CRestore &restore );
	static TYPEDESCRIPTION m_SaveData[];

	void StartTask( Task_t *pTask );
	void RunTask( Task_t *pTask );
	int  TakeDamage( entvars_t* pevInflictor, entvars_t* pevAttacker, float flDamage, int bitsDamageType );
	void TraceAttack( entvars_t *pevAttacker, float flDamage, Vector vecDir, TraceResult *ptr, int bitsDamageType);

	void PlayScriptedSentence( const char *pszSentence, float duration, float volume, float attenuation, BOOL bConcurrent, CBaseEntity *pListener );

	EHANDLE m_hPlayer;
	EHANDLE m_hTalkTarget;
	float m_flTalkTime;
};
LINK_ENTITY_TO_CLASS( monster_grinman, CGrinman );


TYPEDESCRIPTION	CGrinman::m_SaveData[] = 
{
	DEFINE_FIELD( CGrinman, m_hTalkTarget, FIELD_EHANDLE ),
	DEFINE_FIELD( CGrinman, m_flTalkTime, FIELD_TIME ),
};
IMPLEMENT_SAVERESTORE( CGrinman, CBaseMonster );


//=========================================================
// Classify - indicates this monster's place in the 
// relationship table.
//=========================================================
int	CGrinman :: Classify ( void )
{
	return	CLASS_NONE;
}

//=========================================================
// SetYawSpeed - allows each sequence to have a different
// turn rate associated with it.
//=========================================================
void CGrinman :: SetYawSpeed ( void )
{
	int ys;

	switch ( m_Activity )
	{
	case ACT_IDLE:
	default:
		ys = 90;
	}

	pev->yaw_speed = ys;
}

//=========================================================
// HandleAnimEvent - catches the monster-specific messages
// that occur when tagged animation frames are played.
//=========================================================
void CGrinman :: HandleAnimEvent( MonsterEvent_t *pEvent )
{
	switch( pEvent->event )
	{
	case 0:
	default:
		CBaseMonster::HandleAnimEvent( pEvent );
		break;
	}
}

//=========================================================
// ISoundMask - generic monster can't hear.
//=========================================================
int CGrinman :: ISoundMask ( void )
{
	return 0;
}

//=========================================================
// Spawn
//=========================================================
void CGrinman :: Spawn()
{
	Precache();

	SET_MODEL( ENT(pev), "models/gman.mdl" );
	UTIL_SetSize(pev, VEC_HUMAN_HULL_MIN, VEC_HUMAN_HULL_MAX);

	pev->solid			= SOLID_SLIDEBOX;
	pev->movetype		= MOVETYPE_STEP;
	m_bloodColor		= DONT_BLEED;
	pev->health			= 100;
	m_flFieldOfView		= -1;// 360 degrees, he sees all.
	m_MonsterState		= MONSTERSTATE_NONE;

	MonsterInit();
}

//=========================================================
// Precache - precaches all resources this monster needs
//=========================================================
void CGrinman :: Precache()
{
	PRECACHE_MODEL( "models/gman.mdl" );
}	


//=========================================================
// AI Schedules Specific to this monster
//=========================================================


void CGrinman :: StartTask( Task_t *pTask )
{
	switch( pTask->iTask )
	{
	case TASK_WAIT:
		if (m_hPlayer == 0)
		{
			m_hPlayer = UTIL_FindEntityByClassname( NULL, "player" );
		}
		break;
	}
	CBaseMonster::StartTask( pTask );
}

void CGrinman :: RunTask( Task_t *pTask )
{
	switch( pTask->iTask )
	{
	case TASK_WAIT:
		// look at who I'm talking to
		if (m_flTalkTime > gpGlobals->time && m_hTalkTarget != 0)
		{
			float yaw = VecToYaw(m_hTalkTarget->pev->origin - pev->origin) - pev->angles.y;

			if (yaw > 180) yaw -= 360;
			if (yaw < -180) yaw += 360;

			// turn towards vector
			SetBoneController( 0, yaw );
		}
		// look at player, but only if playing a "safe" idle animation
		else if (m_hPlayer != 0 && pev->sequence == 0)
		{
			float yaw = VecToYaw(m_hPlayer->pev->origin - pev->origin) - pev->angles.y;

			if (yaw > 180) yaw -= 360;
			if (yaw < -180) yaw += 360;

			// turn towards vector
			SetBoneController( 0, yaw );
		}
		else 
		{
			SetBoneController( 0, 0 );
		}
		CBaseMonster::RunTask( pTask );
		break;
	default:
		SetBoneController( 0, 0 );
		CBaseMonster::RunTask( pTask );
		break;
	}
}


//=========================================================
// Override all damage
//=========================================================
int CGrinman :: TakeDamage( entvars_t* pevInflictor, entvars_t* pevAttacker, float flDamage, int bitsDamageType )
{
	pev->health = pev->max_health / 2; // always trigger the 50% damage aitrigger

	if ( flDamage > 0 )
	{
		SetConditions(bits_COND_LIGHT_DAMAGE);
	}

	if ( flDamage >= 20 )
	{
		SetConditions(bits_COND_HEAVY_DAMAGE);
	}
	return TRUE;
}


void CGrinman::TraceAttack( entvars_t *pevAttacker, float flDamage, Vector vecDir, TraceResult *ptr, int bitsDamageType)
{
	switch (RANDOM_LONG(1,3))
	{
	case 1:UTIL_Sparks( ptr->vecEndPos ); break;
	case 2:UTIL_Ricochet( ptr->vecEndPos, 2 ); break;
	case 3:UTIL_BloodStream( ptr->vecEndPos, UTIL_RandomBloodVector(), 330, RANDOM_LONG(50,150)); break;
	}

	AddMultiDamage( pevAttacker, this, flDamage, bitsDamageType );
}


void CGrinman::PlayScriptedSentence( const char *pszSentence, float duration, float volume, float attenuation, BOOL bConcurrent, CBaseEntity *pListener )
{
	CBaseMonster::PlayScriptedSentence( pszSentence, duration, volume, attenuation, bConcurrent, pListener );

	m_flTalkTime = gpGlobals->time + duration;
	m_hTalkTarget = pListener;
}