content-pack id validation + refactor

src/logic/ChunksController.h

@@ -5,6 +5,7 @@
 #include "../typedefs.h"
 
 class Level;
+class Chunk;
 class Chunks;
 class Lighting;
 class WorldGenerator;
@@ -23,6 +24,8 @@ private:
 
     /* Process one chunk: load it or calculate lights for it */
     bool loadVisible();
+    bool buildLights(std::shared_ptr<Chunk> chunk);
+    void createChunk(int x, int y);
 public:
     ChunksController(Level* level, uint padding);
     ~ChunksController();