v1.4.4

source/game/StarParticleDatabase.cpp

@@ -0,0 +1,58 @@
+#include "StarParticleDatabase.hpp"
+#include "StarJsonExtra.hpp"
+#include "StarAssets.hpp"
+#include "StarRoot.hpp"
+
+namespace Star {
+
+ParticleConfig::ParticleConfig(Json const& config) {
+  m_kind = config.getString("kind");
+  m_particle = Particle(config.queryObject("definition"));
+  m_variance = Particle(config.queryObject("definition.variance", {}));
+}
+
+String const& ParticleConfig::kind() {
+  return m_kind;
+}
+
+Particle ParticleConfig::instance() {
+  auto particle = m_particle;
+  particle.applyVariance(m_variance);
+  return particle;
+}
+
+ParticleDatabase::ParticleDatabase() {
+  auto assets = Root::singleton().assets();
+  auto files = assets->scanExtension("particle");
+  assets->queueJsons(files);
+  for (auto file : files) {
+    auto particleConfig = make_shared<ParticleConfig>(assets->json(file));
+    if (m_configs.contains(particleConfig->kind()))
+      throw StarException(strf("Duplicate particle asset kind Name %s. configfile %s", particleConfig->kind(), file));
+    m_configs[particleConfig->kind()] = particleConfig;
+  }
+}
+
+ParticleConfigPtr ParticleDatabase::config(String const& kind) const {
+  auto k = kind.toLower();
+  if (!m_configs.contains(k))
+    throw StarException(strf("Unknown particle definition with kind %s.", kind));
+  return m_configs.get(k);
+}
+
+ParticleVariantCreator ParticleDatabase::particleCreator(Json const& kindOrConfig, String const& relativePath) const {
+  if (kindOrConfig.isType(Json::Type::String)) {
+    auto pconfig = config(kindOrConfig.toString());
+    return [pconfig]() { return pconfig->instance(); };
+  } else {
+    Particle particle(kindOrConfig.toObject(), relativePath);
+    Particle variance(kindOrConfig.getObject("variance", {}), relativePath);
+    return makeParticleVariantCreator(move(particle), move(variance));
+  }
+}
+
+Particle ParticleDatabase::particle(Json const& kindOrConfig, String const& relativePath) const {
+  return particleCreator(kindOrConfig, relativePath)();
+}
+
+}