Function NPC_CheckCanAttack

code/game/NPC_combat.cpp:2341–2542

NOTE: BE SURE TO CHECK PVS BEFORE THIS!

//NOTE: BE SURE TO CHECK PVS BEFORE THIS!
qboolean NPC_CheckCanAttack (float attack_scale, qboolean stationary)
{
	vec3_t		delta, forward;
	vec3_t		angleToEnemy;
	vec3_t		hitspot, muzzle, diff, enemy_org;//, enemy_head;
	float		distanceToEnemy;
	qboolean	attack_ok = qfalse;
//	qboolean	duck_ok = qfalse;
	qboolean	dead_on = qfalse;
	float		aim_off;
	float		max_aim_off = 128 - (16 * (float)NPCInfo->stats.aim);
	trace_t		tr;
	gentity_t	*traceEnt = NULL;

	if(NPC->enemy->flags & FL_NOTARGET)
	{
		return qfalse;
	}

	//FIXME: only check to see if should duck if that provides cover from the
	//enemy!!!
	if(!attack_scale)
	{
		attack_scale = 1.0;
	}
	//Yaw to enemy
	CalcEntitySpot( NPC->enemy, SPOT_HEAD, enemy_org );
	NPC_AimWiggle( enemy_org );

	CalcEntitySpot( NPC, SPOT_WEAPON, muzzle );

	VectorSubtract (enemy_org, muzzle, delta);
	vectoangles ( delta, angleToEnemy );
	distanceToEnemy = VectorNormalize(delta);

	NPC->NPC->desiredYaw = angleToEnemy[YAW];
	NPC_UpdateFiringAngles(qfalse, qtrue);

	if( NPC_EnemyTooFar(NPC->enemy, distanceToEnemy*distanceToEnemy, qtrue) )
	{//Too far away?  Do not attack
		return qfalse;
	}

	if(client->fireDelay > 0)
	{//already waiting for a shot to fire
		NPC->NPC->desiredPitch = angleToEnemy[PITCH];
		NPC_UpdateFiringAngles(qtrue, qfalse);
		return qfalse;
	}

	if(NPCInfo->scriptFlags & SCF_DONT_FIRE)
	{
		return qfalse;
	}

	NPCInfo->enemyLastVisibility = enemyVisibility;
	//See if they're in our FOV and we have a clear shot to them
	enemyVisibility = NPC_CheckVisibility ( NPC->enemy, CHECK_360|CHECK_FOV);////CHECK_PVS|