/* * Attribute: radius * * The radius of the body, in metres (m). * * Availability: * * alpha 16 * * Status: * * experimental */ static int l_sbody_attr_radius(lua_State *l) { SBody *sbody = LuaSBody::GetFromLua(1); lua_pushnumber(l, sbody->GetRadius()); return 1; }
void Game::SwitchToNormalSpace() { // remove the player from hyperspace m_space->RemoveBody(m_player.Get()); // create a new space for the system const SystemPath &dest = m_player->GetHyperspaceDest(); m_space.Reset(new Space(this, dest)); // put the player in it m_player->SetFrame(m_space->GetRootFrame()); m_space->AddBody(m_player.Get()); // place it m_player->SetPosition(m_space->GetHyperspaceExitPoint(m_hyperspaceSource)); m_player->SetVelocity(vector3d(0,0,-100.0)); m_player->SetRotMatrix(matrix4x4d::Identity()); // place the exit cloud HyperspaceCloud *cloud = new HyperspaceCloud(0, Pi::game->GetTime(), true); cloud->SetFrame(m_space->GetRootFrame()); cloud->SetPosition(m_player->GetPosition()); m_space->AddBody(cloud); for (std::list<HyperspaceCloud*>::iterator i = m_hyperspaceClouds.begin(); i != m_hyperspaceClouds.end(); ++i) { cloud = *i; cloud->SetFrame(m_space->GetRootFrame()); cloud->SetPosition(m_space->GetHyperspaceExitPoint(m_hyperspaceSource)); m_space->AddBody(cloud); if (cloud->GetDueDate() < Pi::game->GetTime()) { // they emerged from hyperspace some time ago Ship *ship = cloud->EvictShip(); ship->SetFrame(m_space->GetRootFrame()); ship->SetVelocity(vector3d(0,0,-100.0)); ship->SetRotMatrix(matrix4x4d::Identity()); ship->Enable(); ship->SetFlightState(Ship::FLYING); const SystemPath &sdest = ship->GetHyperspaceDest(); if (sdest.IsSystemPath()) { // travelling to the system as a whole, so just dump them on // the cloud - we can't do any better in this case ship->SetPosition(cloud->GetPosition()); } else { // on their way to a body. they're already in-system so we // want to simulate some travel to their destination. we // naively assume full accel for half the distance, flip and // full brake for the rest. Body *target_body = m_space->FindBodyForPath(&sdest); double dist_to_target = cloud->GetPositionRelTo(target_body).Length(); double half_dist_to_target = dist_to_target / 2.0; double accel = -(ship->GetShipType().linThrust[ShipType::THRUSTER_FORWARD] / ship->GetMass()); double travel_time = Pi::game->GetTime() - cloud->GetDueDate(); // I can't help but feel some actual math would do better here double speed = 0; double dist = 0; while (travel_time > 0 && dist <= half_dist_to_target) { speed += accel; dist += speed; travel_time--; } while (travel_time > 0 && dist < dist_to_target) { speed -= accel; dist += speed; travel_time--; } if (travel_time <= 0) { vector3d pos = target_body->GetPositionRelTo(m_space->GetRootFrame()) + cloud->GetPositionRelTo(target_body).Normalized() * (dist_to_target - dist); ship->SetPosition(pos); } else { // ship made it with time to spare. just put it somewhere // near the body. the script should be issuing a dock or // flyto command in onEnterSystem so it should sort it // itself out long before the player can get near SBody *sbody = m_space->GetStarSystem()->GetBodyByPath(&sdest); if (sbody->type == SBody::TYPE_STARPORT_ORBITAL) { ship->SetFrame(target_body->GetFrame()); ship->SetPosition(MathUtil::RandomPointOnSphere(1000.0)*1000.0); // somewhere 1000km out } else { if (sbody->type == SBody::TYPE_STARPORT_SURFACE) { sbody = sbody->parent; SystemPath path = m_space->GetStarSystem()->GetPathOf(sbody); target_body = m_space->FindBodyForPath(&path); } double sdist = sbody->GetRadius()*2.0; ship->SetFrame(target_body->GetFrame()); ship->SetPosition(MathUtil::RandomPointOnSphere(sdist)); } } } m_space->AddBody(ship); Pi::luaOnEnterSystem->Queue(ship); } } m_hyperspaceClouds.clear(); m_state = STATE_NORMAL; }