implement unlock dependencies

src/lib/sim/Simulation.cpp

@@ -635,12 +635,14 @@ void Simulation::generateSchematicChoices(int destroyedStationLevel)
     {
         if (def.unlockAtStationLevel < 0 || def.unlockAtStationLevel > destroyedStationLevel) { continue; }
         if (m_schematicLevels.at(def.id).unlocked) { continue; }
+        if (!prerequisitesSatisfied(def.unlockRequires)) { continue; }
         pool.push_back({def.id, DropType::Ship});
     }
     for (const ModuleDef& def : m_config.modules.modules)
     {
         if (def.unlockAtStationLevel < 0 || def.unlockAtStationLevel > destroyedStationLevel) { continue; }
         if (m_moduleSchematicLevels.at(def.id).unlocked) { continue; }
+        if (!prerequisitesSatisfied(def.unlockRequires)) { continue; }
         pool.push_back({def.id, DropType::Module});
     }
     for (const RecipeDef& def : m_config.recipes.recipes)
@@ -656,6 +658,7 @@ void Simulation::generateSchematicChoices(int destroyedStationLevel)
             if (m_unlockedItemIds.count(out.item) > 0) { outputUnlocked = true; break; }
         }
         if (!outputUnlocked) { continue; }
+        if (!prerequisitesSatisfied(def.unlockRequires)) { continue; }
         pool.push_back({def.id, DropType::Recipe});
     }
 
@@ -808,6 +811,32 @@ std::set<std::string> Simulation::getUnlockedModuleSchematicIds() const
     return ids;
 }
 
+bool Simulation::isSchematicIdExplicitlyUnlocked(const std::string& schematicId) const
+{
+    // A prerequisite is satisfied only by an explicitly-unlocked schematic
+    // (REQ-LOCK-PREREQ): a ship or module schematic marked unlocked, or a recipe
+    // schematic in the explicit-unlock set. Cross-type ids are looked up with
+    // find/count so an id from one namespace never throws against another.
+    const std::map<std::string, SchematicState>::const_iterator shipIt =
+        m_schematicLevels.find(schematicId);
+    if (shipIt != m_schematicLevels.end() && shipIt->second.unlocked) { return true; }
+
+    const std::map<std::string, SchematicState>::const_iterator moduleIt =
+        m_moduleSchematicLevels.find(schematicId);
+    if (moduleIt != m_moduleSchematicLevels.end() && moduleIt->second.unlocked) { return true; }
+
+    return m_unlockedRecipeSchematicIds.count(schematicId) > 0;
+}
+
+bool Simulation::prerequisitesSatisfied(const std::vector<std::string>& unlockRequires) const
+{
+    for (const std::string& requiredId : unlockRequires)
+    {
+        if (!isSchematicIdExplicitlyUnlocked(requiredId)) { return false; }
+    }
+    return true;
+}
+
 Simulation::UnlockedSets Simulation::computeUnlockedSets(
     const std::set<std::string>& unlockedShipSchematicIds,
     const std::set<std::string>& unlockedModuleSchematicIds,