v1.4.4

source/game/StarMicroDungeon.cpp

@@ -0,0 +1,80 @@
+#include "StarMicroDungeon.hpp"
+#include "StarRoot.hpp"
+#include "StarInterpolation.hpp"
+#include "StarLogging.hpp"
+#include "StarDungeonGenerator.hpp"
+
+namespace Star {
+
+// Placed on server so it can keep a cacheing system which allows for a quick
+// scan if a piece fits.
+
+MicroDungeonFactory::MicroDungeonFactory() {
+  m_generating = false;
+
+  m_placementshifts.push_back(0);
+  for (int i = 1; i < 4; ++i)
+    m_placementshifts.push_back(i);
+  for (int i = 1; i < 4; ++i)
+    m_placementshifts.push_back(-i);
+}
+
+Maybe<pair<List<RectI>, Set<Vec2I>>> MicroDungeonFactory::generate(RectI const& bounds,
+    String const& dungeonName,
+    Vec2I const& position,
+    uint64_t seed,
+    float threatLevel,
+    DungeonGeneratorWorldFacadePtr facade,
+    bool forcePlacement) {
+  Dungeon::DungeonGeneratorWriter writer(facade, {}, {});
+
+  if (m_generating)
+    throw DungeonException("Not reentrant.");
+
+  m_generating = true;
+  auto generatingGuard = finally([this]() { m_generating = false; });
+
+  DungeonGenerator dungeonGenerator(dungeonName, seed, threatLevel, BiomeMicroDungeonId);
+
+  try {
+    // don't bother scanning around because its used in a bruteforce manner for now.
+    // try to stay a bit stable generation wise, maybe trash the cache after a sector is done ?
+
+    auto anchorPart = dungeonGenerator.pickAnchor();
+    if (!anchorPart) {
+      Logger::debug("No valid anchor piece found for microdungeon at %s, skipping", position);
+      return {};
+    }
+
+    if (forcePlacement) {
+      return dungeonGenerator.buildDungeon(anchorPart, position - anchorPart->anchorPoint(), &writer, forcePlacement);
+    } else {
+      for (int dy : m_placementshifts) {
+        auto pos = position - anchorPart->anchorPoint() + Vec2I{0, dy};
+        if (!bounds.contains(pos) || !bounds.contains(pos + Vec2I{anchorPart->size()} - Vec2I{1, 1}))
+          continue;
+
+        bool collision = false;
+        anchorPart->forEachTile([&](Vec2I tilePos, Dungeon::Tile const& tile) -> bool {
+            if (tile.usesPlaces()) {
+              if (facade->getDungeonIdAt(pos + tilePos) != NoDungeonId) {
+                collision = true;
+                return true;
+              }
+            }
+            return false;
+          });
+
+        if (!collision && anchorPart->canPlace(pos, &writer)) {
+          return dungeonGenerator.buildDungeon(anchorPart, pos, &writer, forcePlacement);
+        }
+      }
+    }
+  } catch (std::exception const& e) {
+    throw DungeonException(strf("Error generating microdungeon named '%s'", dungeonGenerator.definition()->name()), e);
+  }
+
+  return {};
+}
+
+}