v1.4.4

source/game/StarTenantDatabase.cpp

@@ -0,0 +1,103 @@
+#include "StarTenantDatabase.hpp"
+#include "StarJsonExtra.hpp"
+
+namespace Star {
+
+bool Tenant::criteriaSatisfied(StringMap<unsigned> const& colonyTags) const {
+  // Check whether colonyTags is a supermultiset of colonyTagCriteria
+  for (pair<String, unsigned> const& entry : colonyTagCriteria.pairs()) {
+    if (colonyTags.value(entry.first, 0) < entry.second)
+      return false;
+  }
+  return true;
+}
+
+TenantDatabase::TenantDatabase() {
+  auto assets = Root::singleton().assets();
+
+  auto files = assets->scanExtension("tenant");
+  assets->queueJsons(files);
+  for (auto file : files) {
+    try {
+      String name = assets->json(file).getString("name");
+      if (m_paths.contains(name))
+        Logger::error("Tenant %s defined twice, second time from %s", name, file);
+      else
+        m_paths[name] = file;
+    } catch (std::exception const& e) {
+      Logger::error("Error loading tenant file %s: %s", file, outputException(e, true));
+    }
+  }
+}
+
+void TenantDatabase::cleanup() {
+  MutexLocker locker(m_cacheMutex);
+  m_tenantCache.cleanup();
+}
+
+TenantPtr TenantDatabase::getTenant(String const& name) const {
+  MutexLocker locker(m_cacheMutex);
+  return m_tenantCache.get(name,
+      [this](String const& name) -> TenantPtr {
+        if (auto path = m_paths.maybe(name))
+          return readTenant(*path);
+        throw TenantException::format("No such tenant named '%s'", name);
+      });
+}
+
+List<TenantPtr> TenantDatabase::getMatchingTenants(StringMap<unsigned> const& colonyTags) const {
+  // This implementation loops over every tenant. Smarter implementations could
+  // be written if it becomes a bottleneck, depending on how colonyTags end up
+  // being
+  // used, how many there are, how many tenants have similar criteria, etc.
+  List<TenantPtr> matchingTenants;
+  for (String const& name : m_paths.keys()) {
+    TenantPtr tenant = getTenant(name);
+    if (tenant->criteriaSatisfied(colonyTags))
+      matchingTenants.append(tenant);
+  }
+  return matchingTenants;
+}
+
+TenantPtr TenantDatabase::readTenant(String const& path) {
+  try {
+    auto assets = Root::singleton().assets();
+    Json config = assets->json(path);
+
+    String name = config.getString("name");
+    float priority = config.getFloat("priority");
+
+    StringMap<unsigned> colonyTagCriteria;
+    for (pair<String, Json> const& entry : config.getObject("colonyTagCriteria").pairs()) {
+      colonyTagCriteria[entry.first] = entry.second.toUInt();
+    }
+
+    List<TenantSpawnable> tenants = config.getArray("tenants").transformed([](Json const& json) -> TenantSpawnable {
+      String spawn = json.getString("spawn");
+      if (spawn == "monster") {
+        return TenantMonsterSpawnable{json.getString("type"), json.optFloat("level"), json.opt("overrides")};
+      } else {
+        starAssert(json.getString("spawn") == "npc");
+
+        Json speciesJson = json.get("species");
+        List<String> species;
+        if (speciesJson.isType(Json::Type::Array))
+          species = speciesJson.toArray().transformed(mem_fn(&Json::toString));
+        else
+          species.append(speciesJson.toString());
+
+        return TenantNpcSpawnable{species, json.getString("type"), json.optFloat("level"), json.opt("overrides")};
+      }
+    });
+
+    Maybe<TenantRent> rent = config.opt("rent").apply([](Json const& json) {
+      return TenantRent{jsonToVec2F(json.get("periodRange")), json.getString("pool")};
+    });
+
+    return make_shared<Tenant>(Tenant{name, priority, colonyTagCriteria, tenants, rent, config});
+  } catch (std::exception const& e) {
+    throw TenantException::format("Error loading tenant '%s': %s", path, outputException(e, false));
+  }
+}
+
+}