/***
*
*	Copyright (c) 1996-2001, 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.
*
****/

#include "extdll.h"
#include "util.h"
#include "cbase.h"
#include "monsters.h"
#include "weapons.h"
#include "nodes.h"
#include "effects.h"
#include "apache.h"

#define SF_WAITFORTRIGGER	(0x04 | 0x40) // UNDONE: Fix!
#define SF_NOWRECKAGE		0x08

class CBoss : public CApache
{
public:
	void Spawn(void);
	void Precache(void);

	BOOL FireGun(void);
};

LINK_ENTITY_TO_CLASS(monster_th_boss, CBoss);

void CBoss::Spawn(void)
{
	Precache( );
	// motor
	pev->movetype = MOVETYPE_FLY;
	pev->solid = SOLID_BBOX;

	SET_MODEL(ENT(pev), "models/boss.mdl");
	UTIL_SetSize( pev, Vector( -32, -32, -64 ), Vector( 32, 32, 0 ) );
	UTIL_SetOrigin( pev, pev->origin );

	pev->flags |= FL_MONSTER;
	pev->takedamage		= DAMAGE_AIM;
	pev->health			= gSkillData.bossHealth;

	m_flFieldOfView = -0.707; // 270 degrees

	pev->sequence = 0;
	ResetSequenceInfo( );
	pev->frame = RANDOM_LONG(0, 0xFF);

	InitBoneControllers();

	if (pev->spawnflags & SF_WAITFORTRIGGER)
	{
		SetUse(&CBoss::StartupUse);
	}
	else
	{
		SetThink(&CBoss::HuntThink);
		SetTouch(&CBoss::FlyTouch);
		pev->nextthink = gpGlobals->time + 1.0;
	}

	m_iRockets = 0;
}


void CBoss::Precache(void)
{
	PRECACHE_MODEL("models/boss.mdl");

	PRECACHE_SOUND("apache/ap_rotor1.wav");
	PRECACHE_SOUND("apache/ap_rotor2.wav");
	PRECACHE_SOUND("apache/ap_rotor3.wav");
	PRECACHE_SOUND("apache/ap_whine1.wav");

	PRECACHE_SOUND("weapons/mortarhit.wav");

	m_iSpriteTexture = PRECACHE_MODEL( "sprites/white.spr" );

	PRECACHE_SOUND("turret/tu_fire1.wav");

	PRECACHE_MODEL("sprites/lgtning.spr");

	m_iExplode	= PRECACHE_MODEL( "sprites/fexplo.spr" );
	m_iBodyGibs = PRECACHE_MODEL( "models/metalplategibs_green.mdl" );
}

BOOL CBoss::FireGun()
{
	UTIL_MakeAimVectors( pev->angles );
		
	Vector posGun, angGun;
	GetAttachment( 1, posGun, angGun );

	Vector vecTarget = (m_posTarget - posGun).Normalize( );

	Vector vecOut;

	vecOut.x = DotProduct( -gpGlobals->v_right, vecTarget );
	vecOut.y = -DotProduct( gpGlobals->v_forward, vecTarget );
	vecOut.z = DotProduct( gpGlobals->v_up, vecTarget );

	Vector angles = UTIL_VecToAngles (vecOut);

	angles.x = -angles.x;
	if (angles.y > 180)
		angles.y = angles.y - 360;
	if (angles.y < -180)
		angles.y = angles.y + 360;
	if (angles.x > 180)
		angles.x = angles.x - 360;
	if (angles.x < -180)
		angles.x = angles.x + 360;

	if (angles.x > m_angGun.x)
		m_angGun.x = Q_min( angles.x, m_angGun.x + 12 );
	if (angles.x < m_angGun.x)
		m_angGun.x = Q_max( angles.x, m_angGun.x - 12 );
	if (angles.y > m_angGun.y)
		m_angGun.y = Q_min( angles.y, m_angGun.y + 12 );
	if (angles.y < m_angGun.y)
		m_angGun.y = Q_max( angles.y, m_angGun.y - 12 );

	m_angGun.y = SetBoneController( 0, m_angGun.y );
	m_angGun.x = SetBoneController( 1, m_angGun.x );

	Vector posBarrel, angBarrel;
	GetAttachment( 0, posBarrel, angBarrel );
	Vector vecGun = (posBarrel - posGun).Normalize( );

	if (DotProduct( vecGun, vecTarget ) > 0.98)
	{
		FireBullets( 1, posGun, vecGun, VECTOR_CONE_4DEGREES, 8192, BULLET_MONSTER_12MM, 1 );
		EMIT_SOUND(ENT(pev), CHAN_WEAPON, "turret/tu_fire1.wav", 1, 0.3);

		return TRUE;
	}

	return FALSE;
}