/*
=================
=
= T_Projectile
=
=================
*/

void T_Projectile (objtype *ob)
{
    int32_t deltax,deltay;
    int     damage;
    int32_t speed;

    speed = (int32_t)ob->speed*tics;

    deltax = FixedMul(speed,costable[ob->angle]);
    deltay = -FixedMul(speed,sintable[ob->angle]);

    if (deltax>0x10000l)
        deltax = 0x10000l;
    if (deltay>0x10000l)
        deltay = 0x10000l;

    ob->x += deltax;
    ob->y += deltay;

    deltax = LABS(ob->x - player->x);
    deltay = LABS(ob->y - player->y);

    if (!ProjectileTryMove (ob))
    {
#ifndef APOGEE_1_0          // actually the whole method is never reached in shareware 1.0
        if (ob->obclass == rocketobj)
        {
            PlaySoundLocActor(MISSILEHITSND,ob);
            ob->state = &s_boom1;
        }
#ifdef SPEAR
        else if (ob->obclass == hrocketobj)
        {
            PlaySoundLocActor(MISSILEHITSND,ob);
            ob->state = &s_hboom1;
        }
#endif
        else
#endif
            ob->state = NULL;               // mark for removal

        return;
    }

    if (deltax < PROJECTILESIZE && deltay < PROJECTILESIZE)
    {       // hit the player
        switch (ob->obclass)
        {
        case needleobj:
            damage = (US_RndT() >>3) + 20;
            break;
        case rocketobj:
        case hrocketobj:
        case sparkobj:
            damage = (US_RndT() >>3) + 30;
            break;
        case fireobj:
            damage = (US_RndT() >>3);
            break;
        }

        TakeDamage (damage,ob);
        ob->state = NULL;               // mark for removal
        return;
    }

    ob->tilex = (short)(ob->x >> TILESHIFT);
    ob->tiley = (short)(ob->y >> TILESHIFT);
}