ShipType::ShipType(const Id &_id, const std::string &path)
{
Json::Reader reader;
Json::Value data;
isGlobalColorDefined = false;
auto fd = FileSystem::gameDataFiles.ReadFile(path);
if (!fd) {
Output("couldn't open ship def '%s'\n", path.c_str());
return;
}
if (!reader.parse(fd->GetData(), fd->GetData()+fd->GetSize(), data)) {
Output("couldn't read ship def '%s': %s\n", path.c_str(), reader.getFormattedErrorMessages().c_str());
return;
}
// determine what kind (tag) of ship this is.
const std::string tagStr = data.get("tag", "").asString();
if( tagStr.empty() || strcasecmp(tagStr.c_str(), "ship")==0 ) {
tag = TAG_SHIP;
} else if( strcasecmp(tagStr.c_str(), "static")==0 ) {
tag = TAG_STATIC_SHIP;
} else if( strcasecmp(tagStr.c_str(), "missile")==0 ) {
tag = TAG_MISSILE;
}
id = _id;
name = data.get("name", "").asString();
shipClass = data.get("ship_class", "").asString();
manufacturer = data.get("manufacturer", "").asString();
modelName = data.get("model", "").asString();
cockpitName = data.get("cockpit", "").asString();
linThrust[THRUSTER_REVERSE] = data.get("reverse_thrust", 0.0f).asFloat();
linThrust[THRUSTER_FORWARD] = data.get("forward_thrust", 0.0f).asFloat();
linThrust[THRUSTER_UP] = data.get("up_thrust", 0.0f).asFloat();
linThrust[THRUSTER_DOWN] = data.get("down_thrust", 0.0f).asFloat();
linThrust[THRUSTER_LEFT] = data.get("left_thrust", 0.0f).asFloat();
linThrust[THRUSTER_RIGHT] = data.get("right_thrust", 0.0f).asFloat();
angThrust = data.get("angular_thrust", 0.0f).asFloat();
// Parse global thrusters color
bool error = false;
int parse = 0;
for( Json::Value::iterator thruster_color = data["thruster_global_color"].begin() ; thruster_color != data["thruster_global_color"].end() ; ++thruster_color ) {
const std::string colorchannel = thruster_color.key().asString();
if (colorchannel.length()!=1) {
error = true;
break;
}
if (colorchannel.at(0) == 'r') {
globalThrusterColor.r = data["thruster_global_color"].get(colorchannel, 0).asInt();
parse++;
continue;
} else if (colorchannel.at(0) == 'g') {
globalThrusterColor.g = data["thruster_global_color"].get(colorchannel, 0).asInt();
parse++;
continue;
} else if (colorchannel.at(0) == 'b') {
globalThrusterColor.b = data["thruster_global_color"].get(colorchannel, 0).asInt();
parse++;
continue;
} else {
// No 'r', no 'g', no 'b', no good :/
error = true;
break;
}
}
if (error==true) {
Output("In file \"%s.json\" global thrusters custom color must be \"r\",\"g\" and \"b\"\n", modelName.c_str());
} else if (parse>0 && parse<3) {
Output("In file \"%s.json\" global thrusters custom color is malformed\n", modelName.c_str());
} else if (parse==3) {
globalThrusterColor.a = 255;
isGlobalColorDefined = true;
}
// Parse direction thrusters color
for (int i=0; i<THRUSTER_MAX; i++) isDirectionColorDefined[i]=false;
error = false;
for( Json::Value::iterator thruster_color = data["thruster_direction_color"].begin() ; thruster_color != data["thruster_direction_color"].end() ; ++thruster_color ) {
const std::string th_color_dir = thruster_color.key().asString();
Json::Value dir_color = data["thruster_direction_color"].get(th_color_dir, 0);
Color color;
if (!dir_color.isMember("r")||!dir_color.isMember("g")||!dir_color.isMember("b")) {
error = true;
continue /* for */;
} else {
color.r = dir_color["r"].asInt();
color.g = dir_color["g"].asInt();
color.b = dir_color["b"].asInt();
color.a = 255;
}
if (th_color_dir.find("forward")!=std::string::npos) {
isDirectionColorDefined[THRUSTER_FORWARD]=true;
directionThrusterColor[THRUSTER_FORWARD]= color;
}
if (th_color_dir.find("retro")!=std::string::npos) {
isDirectionColorDefined[THRUSTER_REVERSE]=true;
directionThrusterColor[THRUSTER_REVERSE]= color;
}
if (th_color_dir.find("left")!=std::string::npos) {
isDirectionColorDefined[THRUSTER_LEFT]=true;
directionThrusterColor[THRUSTER_LEFT]= color;
}
if (th_color_dir.find("right")!=std::string::npos) {
isDirectionColorDefined[THRUSTER_RIGHT]=true;
directionThrusterColor[THRUSTER_RIGHT]= color;
}
if (th_color_dir.find("up")!=std::string::npos) {
isDirectionColorDefined[THRUSTER_UP]=true;
directionThrusterColor[THRUSTER_UP]= color;
}
if (th_color_dir.find("down")!=std::string::npos) {
isDirectionColorDefined[THRUSTER_DOWN]=true;
directionThrusterColor[THRUSTER_DOWN]= color;
}
}
if (error==true) {
for (int i=0; i<THRUSTER_MAX; i++) isDirectionColorDefined[i]=false;
Output("In file \"%s.json\" directional thrusters custom color must be \"r\",\"g\" and \"b\"\n", modelName.c_str());
}
// invert values where necessary
linThrust[THRUSTER_FORWARD] *= -1.f;
linThrust[THRUSTER_LEFT] *= -1.f;
linThrust[THRUSTER_DOWN] *= -1.f;
// angthrust fudge (XXX: why?)
angThrust = angThrust * 0.5f;
hullMass = data.get("hull_mass", 100).asInt();
capacity = data.get("capacity", 0).asInt();
fuelTankMass = data.get("fuel_tank_mass", 5).asInt();
for( Json::Value::iterator slot = data["slots"].begin() ; slot != data["slots"].end() ; ++slot ) {
const std::string slotname = slot.key().asString();
slots[slotname] = data["slots"].get(slotname, 0).asInt();
}
for( Json::Value::iterator role = data["roles"].begin(); role != data["roles"].end(); ++role ) {
const std::string rolename = role.key().asString();
roles[rolename] = data["roles"].get(rolename, 0).asBool();
}
for(int it=0;it<4;it++) thrusterUpgrades[it] = 1.0 + (double(it)/10.0);
for( Json::Value::iterator slot = data["thrust_upgrades"].begin() ; slot != data["thrust_upgrades"].end() ; ++slot ) {
const std::string slotname = slot.key().asString();
const int index = Clamp(atoi(&slotname.c_str()[9]), 1, 3);
thrusterUpgrades[index] = data["thrust_upgrades"].get(slotname, 0).asDouble();
}
atmosphericPressureLimit = data.get("atmospheric_pressure_limit", 10.0).asDouble(); // 10 atmosphere is about 90 metres underwater (on Earth)
{
const auto it = slots.find("engine");
if (it != slots.end())
{
it->second = Clamp(it->second, 0, 1);
}
}
effectiveExhaustVelocity = data.get("effective_exhaust_velocity", -1.0f).asFloat();
const float thruster_fuel_use = data.get("thruster_fuel_use", -1.0f).asFloat();
if(effectiveExhaustVelocity < 0 && thruster_fuel_use < 0) {
// default value of v_c is used
effectiveExhaustVelocity = 55000000;
} else if(effectiveExhaustVelocity < 0 && thruster_fuel_use >= 0) {
// v_c undefined and thruster fuel use defined -- use it!
effectiveExhaustVelocity = GetEffectiveExhaustVelocity(fuelTankMass, thruster_fuel_use, linThrust[Thruster::THRUSTER_FORWARD]);
} else {
if(thruster_fuel_use >= 0) {
Output("Warning: Both thruster_fuel_use and effective_exhaust_velocity defined for %s, using effective_exhaust_velocity.\n", modelName.c_str());
}
}
baseprice = data.get("price", 0.0).asDouble();
minCrew = data.get("min_crew", 1).asInt();
maxCrew = data.get("max_crew", 1).asInt();
hyperdriveClass = data.get("hyperdrive_class", 1).asInt();
}
int _define_ship(lua_State *L, ShipType::Tag tag, std::vector<ShipType::Id> *list)
{
if (s_currentShipFile.empty())
return luaL_error(L, "ship file contains multiple ship definitions");
Json::Value data;
ShipType s;
s.tag = tag;
s.id = s_currentShipFile;
LUA_DEBUG_START(L);
LuaTable t(L, -1);
s.name = t.Get("name", "");
s.shipClass = t.Get("ship_class", "unknown");
s.manufacturer = t.Get("manufacturer", "unknown");
s.modelName = t.Get("model", "");
data["name"] = s.name;
data["ship_class"] = s.shipClass;
data["manufacturer"] = s.manufacturer;
data["model"] = s.modelName;
s.cockpitName = t.Get("cockpit", "");
s.linThrust[ShipType::THRUSTER_REVERSE] = t.Get("reverse_thrust", 0.0f);
s.linThrust[ShipType::THRUSTER_FORWARD] = t.Get("forward_thrust", 0.0f);
s.linThrust[ShipType::THRUSTER_UP] = t.Get("up_thrust", 0.0f);
s.linThrust[ShipType::THRUSTER_DOWN] = t.Get("down_thrust", 0.0f);
s.linThrust[ShipType::THRUSTER_LEFT] = t.Get("left_thrust", 0.0f);
s.linThrust[ShipType::THRUSTER_RIGHT] = t.Get("right_thrust", 0.0f);
s.angThrust = t.Get("angular_thrust", 0.0f);
data["cockpit"] = s.cockpitName;
data["reverse_thrust"] = s.linThrust[ShipType::THRUSTER_REVERSE];
data["forward_thrust"] = s.linThrust[ShipType::THRUSTER_FORWARD];
data["up_thrust"] = s.linThrust[ShipType::THRUSTER_UP];
data["down_thrust"] = s.linThrust[ShipType::THRUSTER_DOWN];
data["left_thrust"] = s.linThrust[ShipType::THRUSTER_LEFT];
data["right_thrust"] = s.linThrust[ShipType::THRUSTER_RIGHT];
data["angular_thrust"] = s.angThrust;
// invert values where necessary
s.linThrust[ShipType::THRUSTER_FORWARD] *= -1.f;
s.linThrust[ShipType::THRUSTER_LEFT] *= -1.f;
s.linThrust[ShipType::THRUSTER_DOWN] *= -1.f;
// angthrust fudge (XXX: why?)
s.angThrust = s.angThrust / 2;
s.capacity = t.Get("capacity", 0);
s.hullMass = t.Get("hull_mass", 100);
s.fuelTankMass = t.Get("fuel_tank_mass", 5);
data["capacity"] = s.capacity;
data["hull_mass"] = s.hullMass;
data["fuel_tank_mass"] = s.fuelTankMass;
LuaTable slot_table = t.Sub("slots");
if (slot_table.GetLua()) {
s.slots = slot_table.GetMap<std::string, int>();
}
lua_pop(L, 1);
{
const auto it = s.slots.find("engine");
if (it != s.slots.end()) { it->second = Clamp(it->second, 0, 1); }
}
for( auto slot : s.slots ) {
data["slots"][slot.first] = slot.second;
}
// fuel_use_rate can be given in two ways
float thruster_fuel_use = 0;
s.effectiveExhaustVelocity = t.Get("effective_exhaust_velocity", -1.0f);
thruster_fuel_use = t.Get("thruster_fuel_use", -1.0f);
data["effective_exhaust_velocity"] = s.effectiveExhaustVelocity;
data["thruster_fuel_use"] = thruster_fuel_use;
if(s.effectiveExhaustVelocity < 0 && thruster_fuel_use < 0) {
// default value of v_c is used
s.effectiveExhaustVelocity = 55000000;
} else if(s.effectiveExhaustVelocity < 0 && thruster_fuel_use >= 0) {
// v_c undefined and thruster fuel use defined -- use it!
s.effectiveExhaustVelocity = GetEffectiveExhaustVelocity(s.fuelTankMass, thruster_fuel_use, s.linThrust[ShipType::THRUSTER_FORWARD]);
} else {
if(thruster_fuel_use >= 0)
Output("Warning: Both thruster_fuel_use and effective_exhaust_velocity defined for %s, using effective_exhaust_velocity.\n", s.modelName.c_str());
}
s.baseprice = t.Get("price", 0.0);
s.minCrew = t.Get("min_crew", 1);
s.maxCrew = t.Get("max_crew", 1);
s.hyperdriveClass = t.Get("hyperdrive_class", 1);
data["price"] = s.baseprice;
data["min_crew"] = s.minCrew;
data["max_crew"] = s.maxCrew;
data["hyperdrive_class"] = s.hyperdriveClass;
Json::StyledWriter writer;
const std::string saveMe = writer.write( data );
const std::string path("ships/" + s_currentShipFile + ".json");
FileSystem::FileSourceFS newFS(FileSystem::GetDataDir());
FILE *f = newFS.OpenWriteStream(path);
if (!f) {
Output("couldn't open file for writing '%s'\n", path.c_str());
abort();
}
fwrite(saveMe.data(), saveMe.length(), 1, f);
fclose(f);
lua_pop(L, 1);
LUA_DEBUG_END(L, 0);
//sanity check
if (s.name.empty())
return luaL_error(L, "Ship has no name");
if (s.modelName.empty())
return luaL_error(L, "Missing model name in ship");
if (s.minCrew < 1 || s.maxCrew < 1 || s.minCrew > s.maxCrew)
return luaL_error(L, "Invalid values for min_crew and max_crew");
const std::string& id = s_currentShipFile;
typedef std::map<std::string, const ShipType>::iterator iter;
std::pair<iter, bool> result = ShipType::types.insert(std::make_pair(id, s));
if (result.second)
list->push_back(s_currentShipFile);
else
return luaL_error(L, "Ship '%s' was already defined by a different file", id.c_str());
s_currentShipFile.clear();
return 0;
}
ShipType::ShipType(const Id &_id, const std::string &path)
{
Json::Reader reader;
Json::Value data;
auto fd = FileSystem::gameDataFiles.ReadFile(path);
if (!fd) {
Output("couldn't open ship def '%s'\n", path.c_str());
return;
}
if (!reader.parse(fd->GetData(), fd->GetData()+fd->GetSize(), data)) {
Output("couldn't read ship def '%s': %s\n", path.c_str(), reader.getFormattedErrorMessages().c_str());
return;
}
// determine what kind (tag) of ship this is.
const std::string tagStr = data.get("tag", "").asString();
if( tagStr.empty() || strcasecmp(tagStr.c_str(), "ship")==0 ) {
tag = TAG_SHIP;
} else if( strcasecmp(tagStr.c_str(), "static")==0 ) {
tag = TAG_STATIC_SHIP;
} else if( strcasecmp(tagStr.c_str(), "missile")==0 ) {
tag = TAG_MISSILE;
}
id = _id;
name = data.get("name", "").asString();
shipClass = data.get("ship_class", "").asString();
manufacturer = data.get("manufacturer", "").asString();
modelName = data.get("model", "").asString();
cockpitName = data.get("cockpit", "").asString();
linThrust[THRUSTER_REVERSE] = data.get("reverse_thrust", 0.0f).asFloat();
linThrust[THRUSTER_FORWARD] = data.get("forward_thrust", 0.0f).asFloat();
linThrust[THRUSTER_UP] = data.get("up_thrust", 0.0f).asFloat();
linThrust[THRUSTER_DOWN] = data.get("down_thrust", 0.0f).asFloat();
linThrust[THRUSTER_LEFT] = data.get("left_thrust", 0.0f).asFloat();
linThrust[THRUSTER_RIGHT] = data.get("right_thrust", 0.0f).asFloat();
angThrust = data.get("angular_thrust", 0.0f).asFloat();
// invert values where necessary
linThrust[THRUSTER_FORWARD] *= -1.f;
linThrust[THRUSTER_LEFT] *= -1.f;
linThrust[THRUSTER_DOWN] *= -1.f;
// angthrust fudge (XXX: why?)
angThrust = angThrust * 0.5f;
hullMass = data.get("hull_mass", 100).asInt();
capacity = data.get("capacity", 0).asInt();
fuelTankMass = data.get("fuel_tank_mass", 5).asInt();
for( Json::Value::iterator slot = data["slots"].begin() ; slot != data["slots"].end() ; ++slot ) {
const std::string slotname = slot.key().asString();
slots[slotname] = data["slots"].get(slotname, 0).asInt();
}
{
const auto it = slots.find("engine");
if (it != slots.end())
{
it->second = Clamp(it->second, 0, 1);
}
}
effectiveExhaustVelocity = data.get("effective_exhaust_velocity", -1.0f).asFloat();
const float thruster_fuel_use = data.get("thruster_fuel_use", -1.0f).asFloat();
if(effectiveExhaustVelocity < 0 && thruster_fuel_use < 0) {
// default value of v_c is used
effectiveExhaustVelocity = 55000000;
} else if(effectiveExhaustVelocity < 0 && thruster_fuel_use >= 0) {
// v_c undefined and thruster fuel use defined -- use it!
effectiveExhaustVelocity = GetEffectiveExhaustVelocity(fuelTankMass, thruster_fuel_use, linThrust[ShipType::THRUSTER_FORWARD]);
} else {
if(thruster_fuel_use >= 0) {
Output("Warning: Both thruster_fuel_use and effective_exhaust_velocity defined for %s, using effective_exhaust_velocity.\n", modelName.c_str());
}
}
baseprice = data.get("price", 0.0).asDouble();
minCrew = data.get("min_crew", 1).asInt();
maxCrew = data.get("max_crew", 1).asInt();
hyperdriveClass = data.get("hyperdrive_class", 1).asInt();
}
int _define_ship(lua_State *L, ShipType::Tag tag, std::vector<ShipType::Id> *list)
{
if (s_currentShipFile.empty())
return luaL_error(L, "ship file contains multiple ship definitions");
ShipType s;
s.tag = tag;
s.id = s_currentShipFile;
LUA_DEBUG_START(L);
LuaTable t(L, -1);
s.name = t.Get("name", "");
s.shipClass = t.Get("ship_class", "unknown");
s.manufacturer = t.Get("manufacturer", "unknown");
s.modelName = t.Get("model", "");
s.cockpitName = t.Get("cockpit", "");
s.linThrust[ShipType::THRUSTER_REVERSE] = t.Get("reverse_thrust", 0.0f);
s.linThrust[ShipType::THRUSTER_FORWARD] = t.Get("forward_thrust", 0.0f);
s.linThrust[ShipType::THRUSTER_UP] = t.Get("up_thrust", 0.0f);
s.linThrust[ShipType::THRUSTER_DOWN] = t.Get("down_thrust", 0.0f);
s.linThrust[ShipType::THRUSTER_LEFT] = t.Get("left_thrust", 0.0f);
s.linThrust[ShipType::THRUSTER_RIGHT] = t.Get("right_thrust", 0.0f);
s.angThrust = t.Get("angular_thrust", 0.0f);
// invert values where necessary
s.linThrust[ShipType::THRUSTER_FORWARD] *= -1.f;
s.linThrust[ShipType::THRUSTER_LEFT] *= -1.f;
s.linThrust[ShipType::THRUSTER_DOWN] *= -1.f;
// angthrust fudge (XXX: why?)
s.angThrust = s.angThrust / 2;
lua_pushstring(L, "camera_offset");
lua_gettable(L, -2);
if (!lua_isnil(L, -1))
Output("ship definition for '%s' has deprecated 'camera_offset' field\n", s.id.c_str());
lua_pop(L, 1);
s.cameraOffset = t.Get("camera_offset", vector3d(0.0));
for (int i=0; i<Equip::SLOT_MAX; i++) s.equipSlotCapacity[i] = 0;
s.equipSlotCapacity[Equip::SLOT_CARGO] = t.Get("max_cargo", 0);
s.equipSlotCapacity[Equip::SLOT_ENGINE] = t.Get("max_engine", 1);
s.equipSlotCapacity[Equip::SLOT_LASER] = t.Get("max_laser", 1);
s.equipSlotCapacity[Equip::SLOT_MISSILE] = t.Get("max_missile", 0);
s.equipSlotCapacity[Equip::SLOT_ECM] = t.Get("max_ecm", 1);
s.equipSlotCapacity[Equip::SLOT_SCANNER] = t.Get("max_scanner", 1);
s.equipSlotCapacity[Equip::SLOT_RADARMAPPER] = t.Get("max_radarmapper", 1);
s.equipSlotCapacity[Equip::SLOT_HYPERCLOUD] = t.Get("max_hypercloud", 1);
s.equipSlotCapacity[Equip::SLOT_HULLAUTOREPAIR] = t.Get("max_hullautorepair", 1);
s.equipSlotCapacity[Equip::SLOT_ENERGYBOOSTER] = t.Get("max_energybooster", 1);
s.equipSlotCapacity[Equip::SLOT_ATMOSHIELD] = t.Get("max_atmoshield", 1);
s.equipSlotCapacity[Equip::SLOT_CABIN] = t.Get("max_cabin", 50);
s.equipSlotCapacity[Equip::SLOT_SHIELD] = t.Get("max_shield", 9999);
s.equipSlotCapacity[Equip::SLOT_FUELSCOOP] = t.Get("max_fuelscoop", 1);
s.equipSlotCapacity[Equip::SLOT_CARGOSCOOP] = t.Get("max_cargoscoop", 1);
s.equipSlotCapacity[Equip::SLOT_LASERCOOLER] = t.Get("max_lasercooler", 1);
s.equipSlotCapacity[Equip::SLOT_CARGOLIFESUPPORT] = t.Get("max_cargolifesupport", 1);
s.equipSlotCapacity[Equip::SLOT_AUTOPILOT] = t.Get("max_autopilot", 1);
s.capacity = t.Get("capacity", 0);
s.hullMass = t.Get("hull_mass", 100);
s.fuelTankMass = t.Get("fuel_tank_mass", 5);
LuaTable slot_table = t.Sub("slots");
if (slot_table.GetLua()) {
s.slots = slot_table.GetMap<std::string, int>();
}
lua_pop(L, 1);
// fuel_use_rate can be given in two ways
float thruster_fuel_use = 0;
s.effectiveExhaustVelocity = t.Get("effective_exhaust_velocity", -1.0f);
thruster_fuel_use = t.Get("thruster_fuel_use", -1.0f);
if(s.effectiveExhaustVelocity < 0 && thruster_fuel_use < 0) {
// default value of v_c is used
s.effectiveExhaustVelocity = 55000000;
} else if(s.effectiveExhaustVelocity < 0 && thruster_fuel_use >= 0) {
// v_c undefined and thruster fuel use defined -- use it!
s.effectiveExhaustVelocity = GetEffectiveExhaustVelocity(s.fuelTankMass, thruster_fuel_use, s.linThrust[ShipType::THRUSTER_FORWARD]);
} else {
if(thruster_fuel_use >= 0)
Output("Warning: Both thruster_fuel_use and effective_exhaust_velocity defined for %s, using effective_exhaust_velocity.\n", s.modelName.c_str());
}
s.baseprice = t.Get("price", 0);
s.baseprice *= 100; // in hundredths of credits
s.minCrew = t.Get("min_crew", 1);
s.maxCrew = t.Get("max_crew", 1);
s.equipSlotCapacity[Equip::SLOT_ENGINE] = Clamp(s.equipSlotCapacity[Equip::SLOT_ENGINE], 0, 1);
s.hyperdriveClass = t.Get("hyperdrive_class", 1);
for (int i = 0; i < ShipType::GUNMOUNT_MAX; i++) {
s.gunMount[i].pos = vector3f(0,0,0);
s.gunMount[i].dir = vector3f(0,0,1);
s.gunMount[i].sep = 5;
s.gunMount[i].orient = ShipType::DUAL_LASERS_HORIZONTAL;
}
lua_pushstring(L, "gun_mounts");
lua_gettable(L, -2);
if (lua_istable(L, -1)) {
Output("ship definition for '%s' has deprecated 'gun_mounts' field\n", s.id.c_str());
for (unsigned int i=0; i<lua_rawlen(L,-1); i++) {
lua_pushinteger(L, i+1);
lua_gettable(L, -2);
if (lua_istable(L, -1) && lua_rawlen(L,-1) == 4) {
lua_pushinteger(L, 1);
lua_gettable(L, -2);
s.gunMount[i].pos = LuaVector::CheckFromLuaF(L, -1);
lua_pop(L, 1);
lua_pushinteger(L, 2);
lua_gettable(L, -2);
s.gunMount[i].dir = LuaVector::CheckFromLuaF(L, -1);
lua_pop(L, 1);
lua_pushinteger(L, 3);
lua_gettable(L, -2);
s.gunMount[i].sep = lua_tonumber(L,-1);
lua_pop(L, 1);
lua_pushinteger(L, 4);
lua_gettable(L, -2);
s.gunMount[i].orient = static_cast<ShipType::DualLaserOrientation>(
LuaConstants::GetConstantFromArg(L, "DualLaserOrientation", -1));
lua_pop(L, 1);
}
lua_pop(L, 1);
}
}
lua_pop(L, 1);
LUA_DEBUG_END(L, 0);
//sanity check
if (s.name.empty())
return luaL_error(L, "Ship has no name");
if (s.modelName.empty())
return luaL_error(L, "Missing model name in ship");
if (s.minCrew < 1 || s.maxCrew < 1 || s.minCrew > s.maxCrew)
return luaL_error(L, "Invalid values for min_crew and max_crew");
const std::string& id = s_currentShipFile;
typedef std::map<ShipType::Id, ShipType>::iterator iter;
std::pair<iter, bool> result = ShipType::types.insert(std::make_pair(id, s));
if (result.second)
list->push_back(s_currentShipFile);
else
return luaL_error(L, "Ship '%s' was already defined by a different file", id.c_str());
s_currentShipFile.clear();
return 0;
}
// returns speed that can be reached using fuel minus reserve according to the Tsiolkovsky equation
double Ship::GetSpeedReachedWithFuel()
{
double fuelmass = 1000*GetShipType().fuelTankMass * (m_thrusterFuel - m_reserveFuel);
if (fuelmass < 0) return 0.0;
return GetEffectiveExhaustVelocity() * log(GetMass()/(GetMass()-fuelmass));
}
