/***
*
*	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.
*
****/
#if !defined( OEM_BUILD ) && !defined( HLDEMO_BUILD )

//=========================================================
// hassassin - Human assassin, fast and stealthy
//=========================================================

#include	"extdll.h"
#include	"util.h"
#include	"cbase.h"
#include	"monsters.h"
#include	"schedule.h"
#include	"squadmonster.h"
#include	"weapons.h"
#include	"soundent.h"
#include	"game.h"

extern DLL_GLOBAL int  g_iSkillLevel;

//=========================================================
// monster-specific schedule types
//=========================================================
enum
{
	SCHED_ASSASSIN_EXPOSED = LAST_COMMON_SCHEDULE + 1,// cover was blown.
	SCHED_ASSASSIN_JUMP,	// fly through the air
	SCHED_ASSASSIN_JUMP_ATTACK,	// fly through the air and shoot
	SCHED_ASSASSIN_JUMP_LAND // hit and run away
};

//=========================================================
// monster-specific tasks
//=========================================================

enum
{
	TASK_ASSASSIN_FALL_TO_GROUND = LAST_COMMON_TASK + 1 // falling and waiting to hit ground
};

//=========================================================
// Monster's Anim Events Go Here
//=========================================================
#define		ASSASSIN_AE_SHOOT1	1
#define		ASSASSIN_AE_TOSS1	2
#define		ASSASSIN_AE_JUMP	3

#define bits_MEMORY_BADJUMP		( bits_MEMORY_CUSTOM1 )

class CHAssassin : public CBaseMonster
{
public:
	void Spawn( void );
	void Precache( void );
	void SetYawSpeed ( void );
	int Classify( void );
	int ISoundMask( void);
	void Shoot( void );
	void HandleAnimEvent( MonsterEvent_t *pEvent );
	Schedule_t *GetSchedule( void );
	Schedule_t *GetScheduleOfType( int Type );
	BOOL CheckMeleeAttack1( float flDot, float flDist );	// jump
	// BOOL CheckMeleeAttack2( float flDot, float flDist );
	BOOL CheckRangeAttack1( float flDot, float flDist );	// shoot
	BOOL CheckRangeAttack2( float flDot, float flDist );	// throw grenade
	void StartTask( Task_t *pTask );
	void RunAI( void );
	void RunTask( Task_t *pTask );
	void DeathSound( void );
	void IdleSound( void );
	CUSTOM_SCHEDULES

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

	float m_flLastShot;
	float m_flDiviation;

	float m_flNextJump;
	Vector m_vecJumpVelocity;

	float m_flNextGrenadeCheck;
	Vector	m_vecTossVelocity;
	BOOL m_fThrowGrenade;

	int m_iTargetRanderamt;

	int m_iFrustration;

	int m_iShell;
};

LINK_ENTITY_TO_CLASS( monster_human_assassin, CHAssassin )

TYPEDESCRIPTION	CHAssassin::m_SaveData[] =
{
	DEFINE_FIELD( CHAssassin, m_flLastShot, FIELD_TIME ),
	DEFINE_FIELD( CHAssassin, m_flDiviation, FIELD_FLOAT ),

	DEFINE_FIELD( CHAssassin, m_flNextJump, FIELD_TIME ),
	DEFINE_FIELD( CHAssassin, m_vecJumpVelocity, FIELD_VECTOR ),

	DEFINE_FIELD( CHAssassin, m_flNextGrenadeCheck, FIELD_TIME ),
	DEFINE_FIELD( CHAssassin, m_vecTossVelocity, FIELD_VECTOR ),
	DEFINE_FIELD( CHAssassin, m_fThrowGrenade, FIELD_BOOLEAN ),

	DEFINE_FIELD( CHAssassin, m_iTargetRanderamt, FIELD_INTEGER ),
	DEFINE_FIELD( CHAssassin, m_iFrustration, FIELD_INTEGER ),
};

IMPLEMENT_SAVERESTORE( CHAssassin, CBaseMonster )

//=========================================================
// DieSound
//=========================================================
void CHAssassin::DeathSound( void )
{
}

//=========================================================
// IdleSound
//=========================================================
void CHAssassin::IdleSound( void )
{
}

//=========================================================
// ISoundMask - returns a bit mask indicating which types
// of sounds this monster regards. 
//=========================================================
int CHAssassin::ISoundMask( void ) 
{
	return	bits_SOUND_WORLD |
		bits_SOUND_COMBAT |
		bits_SOUND_DANGER |
		bits_SOUND_PLAYER;
}

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

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

	switch( m_Activity )
	{
	case ACT_TURN_LEFT:
	case ACT_TURN_RIGHT:
		ys = 360;
		break;
	default:	
		ys = 360;
		break;
	}

	pev->yaw_speed = ys;
}

//=========================================================
// Shoot
//=========================================================
void CHAssassin::Shoot( void )
{
	if( m_hEnemy == 0 )
	{
		return;
	}

	Vector vecShootOrigin = GetGunPosition();
	Vector vecShootDir = ShootAtEnemy( vecShootOrigin );

	if( m_flLastShot + 2.0f < gpGlobals->time )
	{
		m_flDiviation = 0.10f;
	}
	else
	{
		m_flDiviation -= 0.01f;
		if( m_flDiviation < 0.02f )
			m_flDiviation = 0.02f;
	}
	m_flLastShot = gpGlobals->time;

	UTIL_MakeVectors( pev->angles );

	Vector vecShellVelocity = gpGlobals->v_right * RANDOM_FLOAT( 40, 90 ) + gpGlobals->v_up * RANDOM_FLOAT( 75, 200 ) + gpGlobals->v_forward * RANDOM_FLOAT( -40, 40 );
	EjectBrass( pev->origin + gpGlobals->v_up * 32 + gpGlobals->v_forward * 12, vecShellVelocity, pev->angles.y, m_iShell, TE_BOUNCE_SHELL ); 
	FireBullets( 1, vecShootOrigin, vecShootDir, Vector( m_flDiviation, m_flDiviation, m_flDiviation ), 2048, BULLET_MONSTER_9MM ); // shoot +-8 degrees

	switch( RANDOM_LONG( 0, 1 ) )
	{
	case 0:
		EMIT_SOUND( ENT( pev ), CHAN_WEAPON, "weapons/pl_gun1.wav", RANDOM_FLOAT( 0.6f, 0.8f ), ATTN_NORM );
		break;
	case 1:
		EMIT_SOUND( ENT( pev ), CHAN_WEAPON, "weapons/pl_gun2.wav", RANDOM_FLOAT( 0.6f, 0.8f ), ATTN_NORM );
		break;
	}

	pev->effects |= EF_MUZZLEFLASH;

	Vector angDir = UTIL_VecToAngles( vecShootDir );
	SetBlending( 0, angDir.x );

	m_cAmmoLoaded--;
}

//=========================================================
// HandleAnimEvent - catches the monster-specific messages
// that occur when tagged animation frames are played.
//
// Returns number of events handled, 0 if none.
//=========================================================
void CHAssassin::HandleAnimEvent( MonsterEvent_t *pEvent )
{
	switch( pEvent->event )
	{
	case ASSASSIN_AE_SHOOT1:
		Shoot();
		break;
	case ASSASSIN_AE_TOSS1:
		{
			UTIL_MakeVectors( pev->angles );
			CGrenade::ShootTimed( pev, pev->origin + gpGlobals->v_forward * 34 + Vector( 0, 0, 32 ), m_vecTossVelocity, 2.0 );

			m_flNextGrenadeCheck = gpGlobals->time + 6.0f;// wait six seconds before even looking again to see if a grenade can be thrown.
			m_fThrowGrenade = FALSE;
			// !!!LATER - when in a group, only try to throw grenade if ordered.
		}
		break;
	case ASSASSIN_AE_JUMP:
		{
			// ALERT( at_console, "jumping");
			UTIL_MakeAimVectors( pev->angles );
			pev->movetype = MOVETYPE_TOSS;
			pev->flags &= ~FL_ONGROUND;
			pev->velocity = m_vecJumpVelocity;
			m_flNextJump = gpGlobals->time + 3.0f;
		}
		return;
	default:
		CBaseMonster::HandleAnimEvent( pEvent );
		break;
	}
}

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

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

	pev->solid		= SOLID_SLIDEBOX;
	pev->movetype		= MOVETYPE_STEP;
	m_bloodColor		= BLOOD_COLOR_RED;
	pev->effects		= 0;
	pev->health		= gSkillData.hassassinHealth;
	m_flFieldOfView		= VIEW_FIELD_WIDE; // indicates the width of this monster's forward view cone ( as a dotproduct result )
	m_MonsterState		= MONSTERSTATE_NONE;
	m_afCapability		= bits_CAP_MELEE_ATTACK1 | bits_CAP_DOORS_GROUP;
	pev->friction		= 1;

	m_HackedGunPos		= Vector( 0, 24, 48 );

	m_iTargetRanderamt	= 20;
	pev->renderamt		= 20;
	pev->rendermode		= kRenderTransTexture;

	MonsterInit();
}

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

	PRECACHE_SOUND( "weapons/pl_gun1.wav" );
	PRECACHE_SOUND( "weapons/pl_gun2.wav" );

	PRECACHE_SOUND( "debris/beamstart1.wav" );

	m_iShell = PRECACHE_MODEL( "models/shell.mdl" );// brass shell
}	

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

//=========================================================
// Fail Schedule
//=========================================================
Task_t tlAssassinFail[] =
{
	{ TASK_STOP_MOVING, 0 },
	{ TASK_SET_ACTIVITY, (float)ACT_IDLE },
	{ TASK_WAIT_FACE_ENEMY, (float)2 },
	// { TASK_WAIT_PVS, (float)0 },
	{ TASK_SET_SCHEDULE, (float)SCHED_CHASE_ENEMY },
};

Schedule_t slAssassinFail[] =
{
	{
		tlAssassinFail,
		ARRAYSIZE( tlAssassinFail ),
		bits_COND_LIGHT_DAMAGE |
		bits_COND_HEAVY_DAMAGE |
		bits_COND_PROVOKED |
		bits_COND_CAN_RANGE_ATTACK1 |
		bits_COND_CAN_RANGE_ATTACK2 |
		bits_COND_CAN_MELEE_ATTACK1 |
		bits_COND_HEAR_SOUND,
		bits_SOUND_DANGER |
		bits_SOUND_PLAYER,
		"AssassinFail"
	},
};

//=========================================================
// Enemy exposed Agrunt's cover
//=========================================================
Task_t tlAssassinExposed[] =
{
	{ TASK_STOP_MOVING, (float)0 },
	{ TASK_RANGE_ATTACK1, (float)0 },
	{ TASK_SET_FAIL_SCHEDULE, (float)SCHED_ASSASSIN_JUMP },
	{ TASK_SET_SCHEDULE, (float)SCHED_TAKE_COVER_FROM_ENEMY	},
};

Schedule_t slAssassinExposed[] =
{
	{
		tlAssassinExposed,
		ARRAYSIZE( tlAssassinExposed ),
		bits_COND_CAN_MELEE_ATTACK1,
		0,
		"AssassinExposed",
	},
};

//=========================================================
// Take cover from enemy! Tries lateral cover before node 
// cover! 
//=========================================================
Task_t	tlAssassinTakeCoverFromEnemy[] =
{
	{ TASK_STOP_MOVING, (float)0 },
	{ TASK_WAIT, (float)0.2 },
	{ TASK_SET_FAIL_SCHEDULE, (float)SCHED_RANGE_ATTACK1 },
	{ TASK_FIND_COVER_FROM_ENEMY, (float)0 },
	{ TASK_RUN_PATH, (float)0 },
	{ TASK_WAIT_FOR_MOVEMENT, (float)0 },
	{ TASK_REMEMBER, (float)bits_MEMORY_INCOVER },
	{ TASK_FACE_ENEMY, (float)0 },
};

Schedule_t slAssassinTakeCoverFromEnemy[] =
{
	{
		tlAssassinTakeCoverFromEnemy,
		ARRAYSIZE( tlAssassinTakeCoverFromEnemy ),
		bits_COND_NEW_ENEMY |
		bits_COND_CAN_MELEE_ATTACK1 |
		bits_COND_HEAR_SOUND,
		bits_SOUND_DANGER,
		"AssassinTakeCoverFromEnemy"
	},
};

//=========================================================
// Take cover from enemy! Tries lateral cover before node 
// cover! 
//=========================================================
Task_t tlAssassinTakeCoverFromEnemy2[] =
{
	{ TASK_STOP_MOVING, (float)0 },
	{ TASK_WAIT, (float)0.2 },
	{ TASK_FACE_ENEMY, (float)0 },
	{ TASK_RANGE_ATTACK1, (float)0 },
	{ TASK_SET_FAIL_SCHEDULE, (float)SCHED_RANGE_ATTACK2 },
	{ TASK_FIND_FAR_NODE_COVER_FROM_ENEMY, (float)384 },
	{ TASK_RUN_PATH, (float)0 },
	{ TASK_WAIT_FOR_MOVEMENT, (float)0 },
	{ TASK_REMEMBER, (float)bits_MEMORY_INCOVER },
	{ TASK_FACE_ENEMY, (float)0 },
};

Schedule_t slAssassinTakeCoverFromEnemy2[] =
{
	{
		tlAssassinTakeCoverFromEnemy2,
		ARRAYSIZE( tlAssassinTakeCoverFromEnemy2 ),
		bits_COND_NEW_ENEMY |
		bits_COND_CAN_MELEE_ATTACK2 |
		bits_COND_HEAR_SOUND,
		bits_SOUND_DANGER,
		"AssassinTakeCoverFromEnemy2"
	},
};

//=========================================================
// hide from the loudest sound source
//=========================================================
Task_t tlAssassinTakeCoverFromBestSound[] =
{
	{ TASK_SET_FAIL_SCHEDULE, (float)SCHED_MELEE_ATTACK1 },
	{ TASK_STOP_MOVING, (float)0 },
	{ TASK_FIND_COVER_FROM_BEST_SOUND, (float)0 },
	{ TASK_RUN_PATH, (float)0 },
	{ TASK_WAIT_FOR_MOVEMENT, (float)0 },
	{ TASK_REMEMBER, (float)bits_MEMORY_INCOVER },
	{ TASK_TURN_LEFT, (float)179 },
};

Schedule_t slAssassinTakeCoverFromBestSound[] =
{
	{
		tlAssassinTakeCoverFromBestSound,
		ARRAYSIZE( tlAssassinTakeCoverFromBestSound ),
		bits_COND_NEW_ENEMY,
		0,
		"AssassinTakeCoverFromBestSound"
	},
};

//=========================================================
// AlertIdle Schedules
//=========================================================
Task_t tlAssassinHide[] =
{
	{ TASK_STOP_MOVING, 0 },
	{ TASK_SET_ACTIVITY, (float)ACT_IDLE },
	{ TASK_WAIT, (float)2 },
	{ TASK_SET_SCHEDULE, (float)SCHED_CHASE_ENEMY },
};

Schedule_t slAssassinHide[] =
{
	{
		tlAssassinHide,
		ARRAYSIZE( tlAssassinHide ),
		bits_COND_NEW_ENEMY |
		bits_COND_SEE_ENEMY |
		bits_COND_SEE_FEAR |
		bits_COND_LIGHT_DAMAGE |
		bits_COND_HEAVY_DAMAGE |
		bits_COND_PROVOKED |
		bits_COND_HEAR_SOUND,
		bits_SOUND_DANGER,
		"AssassinHide"
	},
};

//=========================================================
// HUNT Schedules
//=========================================================
Task_t tlAssassinHunt[] =
{
	{ TASK_GET_PATH_TO_ENEMY, (float)0 },
	{ TASK_RUN_PATH, (float)0 },
	{ TASK_WAIT_FOR_MOVEMENT, (float)0 },
};

Schedule_t slAssassinHunt[] =
{
	{
		tlAssassinHunt,
		ARRAYSIZE( tlAssassinHunt ),
		bits_COND_NEW_ENEMY |
		// bits_COND_SEE_ENEMY |
		bits_COND_CAN_RANGE_ATTACK1 |
		bits_COND_HEAR_SOUND,
		bits_SOUND_DANGER,
		"AssassinHunt"
	},
};

//=========================================================
// Jumping Schedules
//=========================================================
Task_t tlAssassinJump[] =
{
	{ TASK_STOP_MOVING, (float)0 },
	{ TASK_PLAY_SEQUENCE, (float)ACT_HOP },
	{ TASK_SET_SCHEDULE, (float)SCHED_ASSASSIN_JUMP_ATTACK },
};

Schedule_t slAssassinJump[] =
{
	{
		tlAssassinJump,
		ARRAYSIZE( tlAssassinJump ),
		0, 
		0, 
		"AssassinJump"
	},
};

//=========================================================
// repel 
//=========================================================
Task_t tlAssassinJumpAttack[] =
{
	{ TASK_SET_FAIL_SCHEDULE, (float)SCHED_ASSASSIN_JUMP_LAND },
	// { TASK_SET_ACTIVITY, (float)ACT_FLY },
	{ TASK_ASSASSIN_FALL_TO_GROUND, (float)0 },
};

Schedule_t slAssassinJumpAttack[] =
{
	{
		tlAssassinJumpAttack,
		ARRAYSIZE( tlAssassinJumpAttack ),
		0, 
		0,
		"AssassinJumpAttack"
	},
};

//=========================================================
// repel 
//=========================================================
Task_t	tlAssassinJumpLand[] =
{
	{ TASK_SET_FAIL_SCHEDULE, (float)SCHED_ASSASSIN_EXPOSED	},
	// { TASK_SET_FAIL_SCHEDULE, (float)SCHED_MELEE_ATTACK1	},
	{ TASK_SET_ACTIVITY, (float)ACT_IDLE },
	{ TASK_REMEMBER, (float)bits_MEMORY_BADJUMP },
	{ TASK_FIND_NODE_COVER_FROM_ENEMY, (float)0 },
	{ TASK_RUN_PATH, (float)0 },
	{ TASK_FORGET, (float)bits_MEMORY_BADJUMP },
	{ TASK_WAIT_FOR_MOVEMENT, (float)0 },
	{ TASK_REMEMBER, (float)bits_MEMORY_INCOVER },
	{ TASK_FACE_ENEMY, (float)0 },
	{ TASK_SET_FAIL_SCHEDULE, (float)SCHED_RANGE_ATTACK1 },
};

Schedule_t slAssassinJumpLand[] =
{
	{
		tlAssassinJumpLand,
		ARRAYSIZE( tlAssassinJumpLand ),
		0,
		0,
		"AssassinJumpLand"
	},
};

DEFINE_CUSTOM_SCHEDULES( CHAssassin )
{
	slAssassinFail,
	slAssassinExposed,
	slAssassinTakeCoverFromEnemy,
	slAssassinTakeCoverFromEnemy2,
	slAssassinTakeCoverFromBestSound,
	slAssassinHide,
	slAssassinHunt,
	slAssassinJump,
	slAssassinJumpAttack,
	slAssassinJumpLand,
};

IMPLEMENT_CUSTOM_SCHEDULES( CHAssassin, CBaseMonster )

//=========================================================
// CheckMeleeAttack1 - jump like crazy if the enemy gets too close. 
//=========================================================
BOOL CHAssassin::CheckMeleeAttack1( float flDot, float flDist )
{
	if( m_flNextJump < gpGlobals->time && ( flDist <= 128.0f || HasMemory( bits_MEMORY_BADJUMP ) ) && m_hEnemy != 0 )
	{
		TraceResult tr;

		Vector vecDest = pev->origin + Vector( RANDOM_FLOAT( -64, 64), RANDOM_FLOAT( -64, 64 ), 160 );

		UTIL_TraceHull( pev->origin + Vector( 0, 0, 36 ), vecDest + Vector( 0, 0, 36 ), dont_ignore_monsters, human_hull, ENT( pev ), &tr );

		if( tr.fStartSolid || tr.flFraction < 1.0f )
		{
			return FALSE;
		}

		float flGravity = g_psv_gravity->value;

		float time = sqrt( 160.0f / ( 0.5f * flGravity ) );
		float speed = flGravity * time / 160.0f;
		m_vecJumpVelocity = ( vecDest - pev->origin ) * speed;

		return TRUE;
	}
	return FALSE;
}

//=========================================================
// CheckRangeAttack1  - drop a cap in their ass
//
//=========================================================
BOOL CHAssassin::CheckRangeAttack1( float flDot, float flDist )
{
	if( !HasConditions( bits_COND_ENEMY_OCCLUDED ) && flDist > 64 && flDist <= 2048 /* && flDot >= 0.5 */ /* && NoFriendlyFire() */ )
	{
		TraceResult tr;

		Vector vecSrc = GetGunPosition();

		// verify that a bullet fired from the gun will hit the enemy before the world.
		UTIL_TraceLine( vecSrc, m_hEnemy->BodyTarget( vecSrc ), dont_ignore_monsters, ENT( pev ), &tr );

		if( tr.flFraction == 1 || tr.pHit == m_hEnemy->edict() )
		{
			return TRUE;
		}
	}
	return FALSE;
}

//=========================================================
// CheckRangeAttack2 - toss grenade is enemy gets in the way and is too close. 
//=========================================================
BOOL CHAssassin::CheckRangeAttack2( float flDot, float flDist )
{
	m_fThrowGrenade = FALSE;
	if( !FBitSet( m_hEnemy->pev->flags, FL_ONGROUND ) )
	{
		// don't throw grenades at anything that isn't on the ground!
		return FALSE;
	}

	// don't get grenade happy unless the player starts to piss you off
	if( m_iFrustration <= 2 )
		return FALSE;

	if( m_flNextGrenadeCheck < gpGlobals->time && !HasConditions( bits_COND_ENEMY_OCCLUDED ) && flDist <= 512 /* && flDot >= 0.5 */ /* && NoFriendlyFire() */ )
	{
		Vector vecToss = VecCheckThrow( pev, GetGunPosition(), m_hEnemy->Center(), flDist, 0.5 ); // use dist as speed to get there in 1 second

		if( vecToss != g_vecZero )
		{
			m_vecTossVelocity = vecToss;

			// throw a hand grenade
			m_fThrowGrenade = TRUE;

			return TRUE;
		}
	}

	return FALSE;
}

//=========================================================
// RunAI
//=========================================================
void CHAssassin::RunAI( void )
{
	CBaseMonster::RunAI();

	// always visible if moving
	// always visible is not on hard
	if( g_iSkillLevel != SKILL_HARD || m_hEnemy == 0 || pev->deadflag != DEAD_NO || m_Activity == ACT_RUN || m_Activity == ACT_WALK || !( pev->flags & FL_ONGROUND ) )
		m_iTargetRanderamt = 255;
	else
		m_iTargetRanderamt = 20;

	if( pev->renderamt > m_iTargetRanderamt )
	{
		if( pev->renderamt == 255 )
		{
			EMIT_SOUND( ENT( pev ), CHAN_BODY, "debris/beamstart1.wav", 0.2, ATTN_NORM );
		}

		pev->renderamt = Q_max( pev->renderamt - 50, m_iTargetRanderamt );
		pev->rendermode = kRenderTransTexture;
	}
	else if( pev->renderamt < m_iTargetRanderamt )
	{
		pev->renderamt = Q_min( pev->renderamt + 50, m_iTargetRanderamt );
		if( pev->renderamt == 255 )
			pev->rendermode = kRenderNormal;
	}

	if( m_Activity == ACT_RUN || m_Activity == ACT_WALK )
	{
		static int iStep = 0;
		iStep = !iStep;
		if( iStep )
		{
			switch( RANDOM_LONG( 0, 3 ) )
			{
			case 0:
				EMIT_SOUND( ENT( pev ), CHAN_BODY, "player/pl_step1.wav", 0.5, ATTN_NORM );
				break;
			case 1:
				EMIT_SOUND( ENT( pev ), CHAN_BODY, "player/pl_step3.wav", 0.5, ATTN_NORM );
				break;
			case 2:
				EMIT_SOUND( ENT( pev ), CHAN_BODY, "player/pl_step2.wav", 0.5, ATTN_NORM );
				break;
			case 3:
				EMIT_SOUND( ENT( pev ), CHAN_BODY, "player/pl_step4.wav", 0.5, ATTN_NORM );
				break;
			}
		}
	}
}

//=========================================================
// StartTask
//=========================================================
void CHAssassin::StartTask( Task_t *pTask )
{
	switch( pTask->iTask )
	{
	case TASK_RANGE_ATTACK2:
		if( !m_fThrowGrenade )
		{
			TaskComplete();
		}
		else
		{
			CBaseMonster::StartTask( pTask );
		}
		break;
	case TASK_ASSASSIN_FALL_TO_GROUND:
		break;
	default:
		CBaseMonster::StartTask( pTask );
		break;
	}
}

//=========================================================
// RunTask 
//=========================================================
void CHAssassin::RunTask( Task_t *pTask )
{
	switch( pTask->iTask )
	{
	case TASK_ASSASSIN_FALL_TO_GROUND:
		MakeIdealYaw( m_vecEnemyLKP );
		ChangeYaw( pev->yaw_speed );

		if( m_fSequenceFinished )
		{
			if( pev->velocity.z > 0 )
			{
				pev->sequence = LookupSequence( "fly_up" );
			}
			else if( HasConditions( bits_COND_SEE_ENEMY ) )
			{
				pev->sequence = LookupSequence( "fly_attack" );
				pev->frame = 0;
			}
			else
			{
				pev->sequence = LookupSequence( "fly_down" );
				pev->frame = 0;
			}

			ResetSequenceInfo();
			SetYawSpeed();
		}
		if( pev->flags & FL_ONGROUND )
		{
			// ALERT( at_console, "on ground\n" );
			TaskComplete();
		}
		break;
	default: 
		CBaseMonster::RunTask( pTask );
		break;
	}
}

//=========================================================
// GetSchedule - Decides which type of schedule best suits
// the monster's current state and conditions. Then calls
// monster's member function to get a pointer to a schedule
// of the proper type.
//=========================================================
Schedule_t *CHAssassin::GetSchedule( void )
{
	switch( m_MonsterState )
	{
	case MONSTERSTATE_IDLE:
	case MONSTERSTATE_ALERT:
		{
			if( HasConditions( bits_COND_HEAR_SOUND ) )
			{
				CSound *pSound;
				pSound = PBestSound();

				ASSERT( pSound != NULL );
				if( pSound &&( pSound->m_iType & bits_SOUND_DANGER ) )
				{
					return GetScheduleOfType( SCHED_TAKE_COVER_FROM_BEST_SOUND );
				}
				if( pSound &&( pSound->m_iType & bits_SOUND_COMBAT ) )
				{
					return GetScheduleOfType( SCHED_INVESTIGATE_SOUND );
				}
			}
		}
		break;
	case MONSTERSTATE_COMBAT:
		{
			// dead enemy
			if( HasConditions( bits_COND_ENEMY_DEAD ) )
			{
				// call base class, all code to handle dead enemies is centralized there.
				return CBaseMonster::GetSchedule();
			}

			// flying?
			if( pev->movetype == MOVETYPE_TOSS )
			{
				if( pev->flags & FL_ONGROUND )
				{
					// ALERT( at_console, "landed\n" );
					// just landed
					pev->movetype = MOVETYPE_STEP;
					return GetScheduleOfType ( SCHED_ASSASSIN_JUMP_LAND );
				}
				else
				{
					// ALERT( at_console, "jump\n" );
					// jump or jump/shoot
					if( m_MonsterState == MONSTERSTATE_COMBAT )
						return GetScheduleOfType( SCHED_ASSASSIN_JUMP );
					else
						return GetScheduleOfType( SCHED_ASSASSIN_JUMP_ATTACK );
				}
			}

			if( HasConditions( bits_COND_HEAR_SOUND ) )
			{
				CSound *pSound;
				pSound = PBestSound();

				ASSERT( pSound != NULL );
				if( pSound && ( pSound->m_iType & bits_SOUND_DANGER ) )
				{
					return GetScheduleOfType( SCHED_TAKE_COVER_FROM_BEST_SOUND );
				}
			}

			if( HasConditions( bits_COND_LIGHT_DAMAGE ) )
			{
				m_iFrustration++;
			}
			if( HasConditions( bits_COND_HEAVY_DAMAGE ) )
			{
				m_iFrustration++;
			}

			// jump player!
			if( HasConditions( bits_COND_CAN_MELEE_ATTACK1 ) )
			{
				// ALERT( at_console, "melee attack 1\n" );
				return GetScheduleOfType( SCHED_MELEE_ATTACK1 );
			}

			// throw grenade
			if( HasConditions( bits_COND_CAN_RANGE_ATTACK2 ) )
			{
				// ALERT( at_console, "range attack 2\n");
				return GetScheduleOfType( SCHED_RANGE_ATTACK2 );
			}

			// spotted
			if( HasConditions( bits_COND_SEE_ENEMY ) && HasConditions( bits_COND_ENEMY_FACING_ME ) )
			{
				// ALERT( at_console, "exposed\n" );
				m_iFrustration++;
				return GetScheduleOfType( SCHED_ASSASSIN_EXPOSED );
			}

			// can attack
			if( HasConditions( bits_COND_CAN_RANGE_ATTACK1 ) )
			{
				// ALERT( at_console, "range attack 1\n" );
				m_iFrustration = 0;
				return GetScheduleOfType( SCHED_RANGE_ATTACK1 );
			}

			if( HasConditions( bits_COND_SEE_ENEMY ) )
			{
				// ALERT( at_console, "face\n" );
				return GetScheduleOfType( SCHED_COMBAT_FACE );
			}

			// new enemy
			if( HasConditions( bits_COND_NEW_ENEMY ) )
			{
				// ALERT( at_console, "take cover\n" );
				return GetScheduleOfType( SCHED_TAKE_COVER_FROM_ENEMY );
			}

			// ALERT( at_console, "stand\n" );
			return GetScheduleOfType( SCHED_ALERT_STAND );
		}
		break;
	default:
		break;
	}

	return CBaseMonster::GetSchedule();
}

//=========================================================
//=========================================================
Schedule_t *CHAssassin::GetScheduleOfType( int Type ) 
{
	// ALERT( at_console, "%d\n", m_iFrustration );
	switch( Type )
	{
	case SCHED_TAKE_COVER_FROM_ENEMY:
		if( pev->health > 30 )
			return slAssassinTakeCoverFromEnemy;
		else
			return slAssassinTakeCoverFromEnemy2;
	case SCHED_TAKE_COVER_FROM_BEST_SOUND:
		return slAssassinTakeCoverFromBestSound;
	case SCHED_ASSASSIN_EXPOSED:
		return slAssassinExposed;
	case SCHED_FAIL:
		if( m_MonsterState == MONSTERSTATE_COMBAT )
			return slAssassinFail;
		break;
	case SCHED_ALERT_STAND:
		if( m_MonsterState == MONSTERSTATE_COMBAT )
			return slAssassinHide;
		break;
	case SCHED_CHASE_ENEMY:
		return slAssassinHunt;
	case SCHED_MELEE_ATTACK1:
		if( pev->flags & FL_ONGROUND )
		{
			if( m_flNextJump > gpGlobals->time )
			{
				// can't jump yet, go ahead and fail
				return slAssassinFail;
			}
			else
			{
				return slAssassinJump;
			}
		}
		else
		{
			return slAssassinJumpAttack;
		}
	case SCHED_ASSASSIN_JUMP:
	case SCHED_ASSASSIN_JUMP_ATTACK:
		return slAssassinJumpAttack;
	case SCHED_ASSASSIN_JUMP_LAND:
		return slAssassinJumpLand;
	}

	return CBaseMonster::GetScheduleOfType( Type );
}
#endif