implement sensor range requirements

src/lib/config/ConfigLoader.cpp

@@ -397,6 +397,14 @@ ShipsConfig ConfigLoader::loadShips(const std::string& path)
             def.movement.speedFormula = requireFormula(mMt["speed_formula"], file, mPath + ".speed_formula");
         }
 
+        // Sensor
+        {
+            const std::string snsPath = elemPath + ".sensor";
+            const toml::table& snsTable = requireTable(mt["sensor"], file, snsPath);
+            toml::table& snsMt = const_cast<toml::table&>(snsTable);
+            def.sensor.sensorRangeFormula = requireFormula(snsMt["sensor_range_formula"], file, snsPath + ".sensor_range_formula");
+        }
+
         // Loot
         {
             const std::string lPath = elemPath + ".loot";

src/lib/config/ShipsConfig.h

@@ -33,6 +33,11 @@ struct ShipMovement
     Formula speedFormula;  // REQ-SHP-STATS, REQ-SHP-MOVEMENT
 };
 
+struct ShipSensor
+{
+    Formula sensorRangeFormula;  // REQ-SHP-SENSOR, REQ-SHP-STATS
+};
+
 struct ShipCombat
 {
     Formula damageFormula;
@@ -69,6 +74,7 @@ struct ShipDef
     ShipThreat threat;
     ShipHealth health;
     ShipMovement movement;
+    ShipSensor sensor;
     ShipLoot loot;
 
     // Role-specific sections. A ship is a combat ship if combat is present,