PoliceShip.cpp

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#include "PoliceShip.h"

PoliceShip::PoliceShip(float r, GLuint displayList, std::vector<Vector3> point, PlayerObject* player, float maxSpeed):ForeignSpaceShip(r,displayList)
{
    this->point = point;
    aim = 0;
    this->setShoot(false);
    this->maxSpeed = maxSpeed;
    this->player = player;
    this->setPos(point[aim]);
    this->setSpeed(maxSpeed);
    m_station_was_hit = false;
}

PoliceShip::~PoliceShip(void)
{
}

void PoliceShip::stationWasHit(){
    m_station_was_hit = true;
}

bool PoliceShip::behindPlayer()
{
    Plane plane = Plane(player->getView(), player->getPos());
    return ( plane.distance( this->getPos()) < 0);
}
void PoliceShip::adjust (float t)
{
    if (m_station_was_hit || this->shipWasHitOnce())
    { // player has shot the ship -> behave like a pirate and chase player
        Vector3 playerPos = player->getPos();
        Vector3 myPos = this->getPos();

        Vector3 desiredView = playerPos - myPos;
        float distance = desiredView.length();

        bool behind = this->behindPlayer();
        float playerSpeed = player->getSpeed();

        float actualSpeed = this->getSpeed();
        if (distance < 6)
        {
            if (behind) // we are chasing the player
                this->setSpeed(playerSpeed-0.005); // move slower to get out of range
            // (or, if playerSpeed negative, move faster backwards)
            if (!behind) // we are in front of the player
                this->setSpeed(-playerSpeed-0.005); // our speed must be vise versa

            this->setShoot(true);
        }
        if (distance >=6 && distance <= 8)
        {
            if (behind)
                this->setSpeed( playerSpeed );
            if (!behind)
                this->setSpeed( -playerSpeed );
            this->setShoot(true);
        }
        if (distance > 8 && distance <= 15)
        {
            if (behind) // we are chasing the player
                this->setSpeed(playerSpeed+0.005); // move faster to catch him
            // (or, if playerSpeed negative, move slower backwards)
            if (!behind) // we are in front of the player
                this->setSpeed(-playerSpeed+0.005); // our speed must be vise versa
            this->setShoot(true);
        }
        if (distance > 15 && distance <= 250)
        {
            this->setSpeed( maxSpeed );
            if (m_station_was_hit || this->shipWasHitOnce())
                this->setShoot(true);
            else
                this->setShoot(false);
        }

        if (distance > 250)
        {
            if (m_station_was_hit || this->shipWasHitOnce())
            {
                this->setShoot(true);
                this->setSpeed(maxSpeed);
            }
            else
            {
                this->setSpeed(0);
                this->setShoot(false);
            }       
        }

        desiredView.normalize();
        this->setView(desiredView); }
    else
    { // guarding something (probably the coriolis station)
        Vector3 directionToAim = point[aim] - this->getPos();
        float distanceToAim = directionToAim.length();
        if (distanceToAim < 0.5)
        {
            aim = (aim +1);
            if (aim >= point.size()) aim = 0;
            directionToAim = point[aim] - this->getPos();
        }
        directionToAim.normalize();
        this->setView(directionToAim);
    }

}