C++ NPC_FaceEnemy函数代码示例

/*
-------------------------
Mark1_Hunt
- look for enemy.
-------------------------`
*/
void Mark1_Hunt(void)
{

	if ( NPCInfo->goalEntity == NULL )
	{
		NPCInfo->goalEntity = NPC->enemy;
	}

	NPC_FaceEnemy( qtrue );

	NPCInfo->combatMove = qtrue;
	NPC_MoveToGoal( qtrue );
}

/*
-------------------------
Mark2_Hunt
-------------------------
*/
void Mark2_Hunt(void)
{
	if ( NPCInfo->goalEntity == NULL )
	{
		NPCInfo->goalEntity = NPC->enemy;
	}

	// Turn toward him before moving towards him.
	NPC_FaceEnemy( qtrue );

	NPCInfo->combatMove = qtrue;
	NPC_MoveToGoal( qtrue );
}

void ImperialProbe_AttackDecision( void )
{
	float		distance;	
	qboolean	visible;
	qboolean	advance;

	// Always keep a good height off the ground
	ImperialProbe_MaintainHeight();

	//randomly talk
	if ( TIMER_Done(NPC,"patrolNoise") )
	{
		if (TIMER_Done(NPC,"angerNoise"))
		{
			G_SoundOnEnt( NPC, CHAN_AUTO, va("sound/chars/probe/misc/probetalk%d", Q_irand(1, 3)) );

			TIMER_Set( NPC, "patrolNoise", Q_irand( 4000, 10000 ) );
		}
	}

	// If we don't have an enemy, just idle
	if ( NPC_CheckEnemyExt(qfalse) == qfalse )
	{
		ImperialProbe_Idle();
		return;
	}

	NPC_SetAnim( NPC, SETANIM_BOTH, BOTH_RUN1, SETANIM_FLAG_NORMAL);

	// Rate our distance to the target, and our visibilty
	distance	= (int) DistanceHorizontalSquared( NPC->r.currentOrigin, NPC->enemy->r.currentOrigin );	
	visible		= NPC_ClearLOS4( NPC->enemy );
	advance		= (qboolean)(distance > MIN_DISTANCE_SQR);

	// If we cannot see our target, move to see it
	if ( visible == qfalse )
	{
		if ( NPCInfo->scriptFlags & SCF_CHASE_ENEMIES )
		{
			ImperialProbe_Hunt( visible, advance );
			return;
		}
	}

	// Sometimes I have problems with facing the enemy I'm attacking, so force the issue so I don't look dumb
	NPC_FaceEnemy( qtrue );

	// Decide what type of attack to do
	ImperialProbe_Ranged( visible, advance );
}

/*
-------------------------
Sentry_AttackDecision
-------------------------
*/
void Sentry_AttackDecision( void ) {
    float		distance;
    qboolean	visible;
    qboolean	advance;

    // Always keep a good height off the ground
    Sentry_MaintainHeight();

    NPC->s.loopSound = G_SoundIndex( "sound/chars/sentry/misc/sentry_hover_2_lp" );

    //randomly talk
    if ( TIMER_Done( NPC, "patrolNoise" ) ) {
        if ( TIMER_Done( NPC, "angerNoise" ) ) {
            G_SoundOnEnt( NPC, CHAN_AUTO, va( "sound/chars/sentry/misc/talk%d", Q_irand( 1, 3 ) ) );

            TIMER_Set( NPC, "patrolNoise", Q_irand( 4000, 10000 ) );
        }
    }

    // He's dead.
    if ( NPC->enemy->health < 1 ) {
        NPC->enemy = NULL;
        Sentry_Idle();
        return;
    }

    // If we don't have an enemy, just idle
    if ( NPC_CheckEnemyExt( qfalse ) == qfalse ) {
        Sentry_Idle();
        return;
    }

    // Rate our distance to the target and visibilty
    distance = (int)DistanceHorizontalSquared( &NPC->r.currentOrigin, &NPC->enemy->r.currentOrigin );
    visible = NPC_ClearLOS4( NPC->enemy );
    advance = (qboolean)(distance > MIN_DISTANCE_SQR);

    // If we cannot see our target, move to see it
    if ( visible == qfalse ) {
        if ( NPCInfo->scriptFlags & SCF_CHASE_ENEMIES ) {
            Sentry_Hunt( visible, advance );
            return;
        }
    }

    NPC_FaceEnemy( qtrue );

    Sentry_RangedAttack( visible, advance );
}

/*
-------------------------
Interrogator_Attack
-------------------------
*/
void Interrogator_Attack( void )
{
	float		distance;	
	qboolean	visible;
	qboolean	advance;

	// Always keep a good height off the ground
	Interrogator_MaintainHeight();

	//randomly talk
	if ( TIMER_Done(NPC,"patrolNoise") )
	{
		if (TIMER_Done(NPC,"angerNoise"))
		{
			G_SoundOnEnt( NPC, CHAN_AUTO, va("sound/chars/probe/misc/talk.wav",	Q_irand(1, 3)) );

			TIMER_Set( NPC, "patrolNoise", Q_irand( 4000, 10000 ) );
		}
	}

	// If we don't have an enemy, just idle
	if ( NPC_CheckEnemyExt(qfalse) == qfalse )
	{
		Interrogator_Idle();
		return;
	}

	// Rate our distance to the target, and our visibilty
	distance	= (int) DistanceHorizontalSquared( NPC->r.currentOrigin, NPC->enemy->r.currentOrigin );	
	visible		= NPC_ClearLOS4( NPC->enemy );
	advance		= (qboolean)(distance > MIN_DISTANCE*MIN_DISTANCE );

	if ( !visible )
	{
		advance = qtrue;
	}
	if ( NPCInfo->scriptFlags & SCF_CHASE_ENEMIES )
	{
		Interrogator_Hunt( visible, advance );
	}

	NPC_FaceEnemy( qtrue );

	if (!advance)
	{
		Interrogator_Melee( visible, advance );
	}
}

qboolean NPC_CheckCanAttackExt( void )
{
	//We don't want them to shoot
	if( NPCInfo->scriptFlags & SCF_DONT_FIRE )
		return qfalse;

	//Turn to face
	if ( NPC_FaceEnemy( qtrue ) == qfalse )
		return qfalse;

	//Must have a clear line of sight to the target
	if ( NPC_ClearShot( NPC->enemy ) == qfalse )
		return qfalse;

	return qtrue;
}

void Interrogator_Hunt( qboolean visible, qboolean advance )
{
	float	distance, speed;
	vec3_t	forward;

	Interrogator_PartsMove();

	NPC_FaceEnemy(qfalse);

	//If we're not supposed to stand still, pursue the player
	if ( NPCInfo->standTime < level.time )
	{
		// Only strafe when we can see the player
		if ( visible )
		{
			Interrogator_Strafe();
			if ( NPCInfo->standTime > level.time )
			{//successfully strafed
				return;
			}
		}
	}

	//If we don't want to advance, stop here
	if ( advance == qfalse )
		return;

	//Only try and navigate if the player is visible
	if ( visible == qfalse )
	{
		// Move towards our goal
		NPCInfo->goalEntity = NPC->enemy;
		NPCInfo->goalRadius = 12;

		//Get our direction from the navigator if we can't see our target
		if ( NPC_GetMoveDirection( forward, &distance ) == qfalse )
			return;
	}
	else
	{
		VectorSubtract( NPC->enemy->r.currentOrigin, NPC->r.currentOrigin, forward );
		distance = VectorNormalize( forward );
	}

	speed = HUNTER_FORWARD_BASE_SPEED + HUNTER_FORWARD_MULTIPLIER * g_spskill.integer;
	VectorMA( NPC->client->ps.velocity, speed, forward, NPC->client->ps.velocity );
}

//------------------------------------
void Seeker_Hunt( qboolean visible, qboolean advance )
{
	float	distance, speed;
	vector3	forward;

	NPC_FaceEnemy( qtrue );

	// If we're not supposed to stand still, pursue the player
	if ( NPCInfo->standTime < level.time )
	{
		// Only strafe when we can see the player
		if ( visible )
		{
			Seeker_Strafe();
			return;
		}
	}

	// If we don't want to advance, stop here
	if ( advance == qfalse )
	{
		return;
	}

	// Only try and navigate if the player is visible
	if ( visible == qfalse )
	{
		// Move towards our goal
		NPCInfo->goalEntity = NPC->enemy;
		NPCInfo->goalRadius = 24;

		// Get our direction from the navigator if we can't see our target
		if ( NPC_GetMoveDirection( &forward, &distance ) == qfalse )
		{
			return;
		}
	}
	else
	{
		VectorSubtract( &NPC->enemy->r.currentOrigin, &NPC->r.currentOrigin, &forward );
		distance = VectorNormalize( &forward );
	}

	speed = SEEKER_FORWARD_BASE_SPEED + SEEKER_FORWARD_MULTIPLIER * g_spSkill.integer;
	VectorMA( &NPC->client->ps.velocity, speed, &forward, &NPC->client->ps.velocity );
}

/*
-------------------------
Reaver_Jump
-------------------------
*/
void Reaver_Jump( void )
{
	if ( NPC->enemy )
		NPC_FaceEnemy();

	// This seems a bit risky, but here I'm trying to actually delay the jump process so it's timed up better with its anims
	if ( NPCInfo->jumpTime - 2500 > level.time && level.time + 2700 > NPCInfo->jumpTime )
	{
		vec3_t	dir;

		AngleVectors( NPC->currentAngles, dir, NULL, NULL );
		VectorScale( dir, REAVER_JUMP_VELOCITY, dir );
		dir[2] += REAVER_JUMP_HEIGHT;

		VectorCopy( dir, NPC->client->ps.velocity );
	}
}

//------------------------------------
void Seeker_Hunt( qboolean visible, qboolean advance )
{
    float	speed;
    vec3_t	forward;

    NPC_FaceEnemy( qtrue );

    // If we're not supposed to stand still, pursue the player
    if ( NPCInfo->standTime < level.time )
    {
        // Only strafe when we can see the player
        if ( visible )
        {
            Seeker_Strafe();
            return;
        }
    }

    // If we don't want to advance, stop here
    if ( advance == qfalse )
    {
        return;
    }

    // Only try and navigate if the player is visible
    if ( visible == qfalse )
    {
        // Move towards our goal
        NPCInfo->goalEntity = NPC->enemy;
        NPCInfo->goalRadius = 24;

        NPC_MoveToGoal(qtrue);
        return;

    }
    else
    {
        VectorSubtract( NPC->enemy->currentOrigin, NPC->currentOrigin, forward );
        /*distance = */VectorNormalize( forward );
    }

    speed = SEEKER_FORWARD_BASE_SPEED + SEEKER_FORWARD_MULTIPLIER * g_spskill->integer;
    VectorMA( NPC->client->ps.velocity, speed, forward, NPC->client->ps.velocity );
}

void		Boba_DoSniper( gentity_t *self)
{
	if (TIMER_Done(NPC, "PickNewSniperPoint"))
	{
		TIMER_Set(NPC, "PickNewSniperPoint", Q_irand(15000, 25000));
 		int		SniperPoint = NPC_FindCombatPoint(NPC->currentOrigin, 0, NPC->currentOrigin, CP_SNIPE|CP_CLEAR|CP_HAS_ROUTE|CP_TRYFAR|CP_HORZ_DIST_COLL, 0, -1);
		if (SniperPoint!=-1)
		{
			NPC_SetCombatPoint(SniperPoint);
			NPC_SetMoveGoal( NPC, level.combatPoints[SniperPoint].origin, 20, qtrue, SniperPoint );
		}
	}

    if (Distance(NPC->currentOrigin, level.combatPoints[NPCInfo->combatPoint].origin)<50.0f)
	{
		Boba_FireDecide();
	}


	bool	IsOnAPath = !!NPC_MoveToGoal(qtrue);

	// Resolve Blocked Problems
	//--------------------------
	if (NPCInfo->aiFlags&NPCAI_BLOCKED && 
		NPC->client->moveType!=MT_FLYSWIM && 
		((level.time - NPCInfo->blockedDebounceTime)>3000)
		)
	{
		Boba_Printf("BLOCKED: Attempting Jump");
		if (IsOnAPath)
		{
			if (!NPC_TryJump(NPCInfo->blockedTargetPosition))
			{
				Boba_Printf("  Failed");
			}
		}
	}

	NPC_FaceEnemy(qtrue);
	NPC_UpdateAngles( qtrue, qtrue );
}

//----------------------------------
void MineMonster_Combat( void )
{
	float distance;
	qboolean advance;

	// If we cannot see our target or we have somewhere to go, then do that
	if ( !NPC_ClearLOS4( NPC->enemy ) || UpdateGoal( ))
	{
		NPCInfo->combatMove = qtrue;
		NPCInfo->goalEntity = NPC->enemy;
		NPCInfo->goalRadius = MAX_DISTANCE;	// just get us within combat range

		NPC_MoveToGoal( qtrue );
		return;
	}

	// Sometimes I have problems with facing the enemy I'm attacking, so force the issue so I don't look dumb
	NPC_FaceEnemy( qtrue );

	distance	= DistanceHorizontalSquared( &NPC->r.currentOrigin, &NPC->enemy->r.currentOrigin );	

	advance = (qboolean)( distance > MIN_DISTANCE_SQR ? qtrue : qfalse  );

	if (( advance || NPCInfo->localState == LSTATE_WAITING ) && TIMER_Done( NPC, "attacking" )) // waiting monsters can't attack
	{
		if ( TIMER_Done2( NPC, "takingPain", qtrue ))
		{
			NPCInfo->localState = LSTATE_CLEAR;
		}
		else
		{
			MineMonster_Move( qtrue );
		}
	}
	else
	{
		MineMonster_Attack();
	}
}

void RT_Flying_Think( void )
{
	if ( Q3_TaskIDPending( NPC, TID_MOVE_NAV ) 
		&& UpdateGoal() )
	{//being scripted to go to a certain spot, don't maintain height
		if ( NPC_MoveToGoal( qtrue ) )
		{//we could macro-nav to our goal
			if ( NPC->enemy && NPC->enemy->health && NPC->enemy->inuse )
			{
				NPC_FaceEnemy( qtrue );
				RT_FireDecide();
			}
		}
		else
		{//frick, no where to nav to, keep us in the air!
			RT_Flying_MaintainHeight();
		}
		return;
	}

	if ( NPC->random == 0.0f )
	{
		// used to offset seekers around a circle so they don't occupy the same spot.  This is not a fool-proof method.
		NPC->random = random() * 6.3f; // roughly 2pi
	}

	if ( NPC->enemy && NPC->enemy->health && NPC->enemy->inuse )
	{
		RT_Flying_Attack();
		RT_FireDecide();
		return;
	}
	else
	{
		RT_Flying_MaintainHeight();
		RT_RunStormtrooperAI();
		return;
	}
}

//----------------------------------
void Rancor_Combat( void )
{
	if ( NPCS.NPC->count )
	{//holding my enemy
		if ( TIMER_Done2( NPCS.NPC, "takingPain", qtrue ))
		{
			NPCS.NPCInfo->localState = LSTATE_CLEAR;
		}
		else
		{
			Rancor_Attack( 0, qfalse );
		}
		NPC_UpdateAngles( qtrue, qtrue );
		return;
	}
	// If we cannot see our target or we have somewhere to go, then do that
	if ( !NPC_ClearLOS4( NPCS.NPC->enemy ) )//|| UpdateGoal( ))
	{
		NPCS.NPCInfo->combatMove = qtrue;
		NPCS.NPCInfo->goalEntity = NPCS.NPC->enemy;
		NPCS.NPCInfo->goalRadius = MIN_DISTANCE;//MAX_DISTANCE;	// just get us within combat range

		if ( !NPC_MoveToGoal( qtrue ) )
		{//couldn't go after him?  Look for a new one
			TIMER_Set( NPCS.NPC, "lookForNewEnemy", 0 );
			NPCS.NPCInfo->consecutiveBlockedMoves++;
		}
		else 
		{
			NPCS.NPCInfo->consecutiveBlockedMoves = 0;
		}
		return;
	}

	// Sometimes I have problems with facing the enemy I'm attacking, so force the issue so I don't look dumb
	NPC_FaceEnemy( qtrue );

	{
		float	distance;
		qboolean	advance;
		qboolean	doCharge;

		distance	= Distance( NPCS.NPC->r.currentOrigin, NPCS.NPC->enemy->r.currentOrigin );	
		advance = (qboolean)( distance > (NPCS.NPC->r.maxs[0]+MIN_DISTANCE) ? qtrue : qfalse  );
		doCharge = qfalse;

		if ( advance )
		{//have to get closer
			vec3_t	yawOnlyAngles;
			VectorSet( yawOnlyAngles, 0, NPCS.NPC->r.currentAngles[YAW], 0 );
			if ( NPCS.NPC->enemy->health > 0
				&& fabs(distance-250) <= 80 
				&& InFOV3( NPCS.NPC->enemy->r.currentOrigin, NPCS.NPC->r.currentOrigin, yawOnlyAngles, 30, 30 ) )
			{
				if ( !Q_irand( 0, 9 ) )
				{//go for the charge
					doCharge = qtrue;
					advance = qfalse;
				}
			}
		}

		if (( advance /*|| NPCInfo->localState == LSTATE_WAITING*/ ) && TIMER_Done( NPCS.NPC, "attacking" )) // waiting monsters can't attack
		{
			if ( TIMER_Done2( NPCS.NPC, "takingPain", qtrue ))
			{
				NPCS.NPCInfo->localState = LSTATE_CLEAR;
			}
			else
			{
				Rancor_Move( qtrue );
			}
		}
		else
		{
			Rancor_Attack( distance, doCharge );
		}
	}
}

/*
-------------------------
Mark1_AttackDecision
-------------------------
*/
void Mark1_AttackDecision( void )
{
	int blasterTest,rocketTest;
	float		distance;
	distance_e	distRate;
	qboolean	visible;
	qboolean	advance;

	//randomly talk
	if ( TIMER_Done(NPC,"patrolNoise") )
	{
		if (TIMER_Done(NPC,"angerNoise"))
		{
			TIMER_Set( NPC, "patrolNoise", Q_irand( 4000, 10000 ) );
		}
	}

	// Enemy is dead or he has no enemy.
	if ((NPC->enemy->health<1) || ( NPC_CheckEnemyExt(qfalse) == qfalse ))
	{
		NPC->enemy = NULL;
		return;
	}

	// Rate our distance to the target and visibility
	distance	= (int) DistanceHorizontalSquared( NPC->r.currentOrigin, NPC->enemy->r.currentOrigin );	
	distRate	= ( distance > MIN_MELEE_RANGE_SQR ) ? DIST_LONG : DIST_MELEE;
	visible		= NPC_ClearLOS4( NPC->enemy );
	advance		= (qboolean)(distance > MIN_DISTANCE_SQR);

	// If we cannot see our target, move to see it
	if ((!visible) || (!NPC_FaceEnemy(qtrue)))
	{
		Mark1_Hunt();
		return;
	}

	// See if the side weapons are there
	blasterTest = trap_G2API_GetSurfaceRenderStatus( NPC->ghoul2, 0, "l_arm" );
	rocketTest = trap_G2API_GetSurfaceRenderStatus( NPC->ghoul2, 0, "r_arm" );

	// It has both side weapons
	if (!blasterTest  && !rocketTest)
	{
		;	// So do nothing.
	}
	else if (blasterTest!=-1
		&&blasterTest)
	{
		distRate = DIST_LONG;
	}
	else if (rocketTest!=-1
		&&rocketTest)
	{
		distRate = DIST_MELEE;
	}
	else	// It should never get here, but just in case
	{ 
		NPC->health = 0;
		NPC->client->ps.stats[STAT_HEALTH] = 0;
		if (NPC->die)
		{
			NPC->die(NPC, NPC, NPC, 100, MOD_UNKNOWN);
		}
	}

	// We can see enemy so shoot him if timers let you.
	NPC_FaceEnemy( qtrue );

	if (distRate == DIST_MELEE)
	{
		Mark1_BlasterAttack(advance);
	}
	else if (distRate == DIST_LONG)
	{
		Mark1_RocketAttack(advance);
	}
}