Method SetWatch

engine/Poseidon/AI/AIUnitImpl.cpp:1216–1321

void AIUnit::SetWatch()
{
    // cosider engaging target
    AIGroup* grp = GetGroup();
    if (!IsPlayer() && _targetAssigned && !grp->CommandSent(this, Command::Attack) &&
        !grp->CommandSent(this, Command::AttackAndFire) && !grp->CommandSent(this, Command::GetOut) &&
        !grp->CommandSent(this, Command::GetIn) && (_targetAssigned == _targetEngage || !IsKeepingFormation()))
    {
        EntityAI* veh = GetVehicle();
        FireResult result;
        Vector3 pos;
        if (veh->AttackThink(result, pos))
        {
            // check if we are ready to fire
            // if not, we probably will have to attack
            float ttl = GetTimeToLive();
            FireResult fResult;
            veh->WhatFireResult(fResult, *_targetAssigned, ttl);
            if (result.CleanSurplus() > fResult.CleanSurplus() * 1.2 + 200)
            {
                // some good attack position found
                // issue auto attack command

                Command cmd;
                cmd._message = Command::Attack;
                cmd._targetE = _targetAssigned;
                cmd._destination = pos;

                // automatic attack command
                grp->NotifyAutoCommand(cmd, this);
            }
        }
    }

    // consider formation and watch mode
    switch (_watchMode)
    {
        case WMAround:
        {
            float time = Glob.time - _watchDirSet;
            Matrix3 rotY(MRotationY, time * ((H_PI * 2) / 30));
            _watchDir = rotY * _watchDir;
            _watchDir[1] = 0;
            _watchDir.Normalize();
            _watchDirSet = Glob.time;
            _watchDirHead = _watchDir;
        }
        break;
        case WMPos:
        {
            _watchDir = _watchPos - GetVehicle()->CameraPosition();
            _watchDir.Normalize();
            _watchDirHead = _watchDir;
        }
        break;
        case WMTgt:
            if (_watchTgt)
            {
                _watchPos = _watchTgt->AimingPosition();
                _watchDir = _watchPos - GetVehicle()->CameraPosition();