Added PieceStructures generator.

src/Generating/PieceStructuresGen.h

@@ -0,0 +1,91 @@
+
+// PieceStructuresGen.h
+
+// Declares the cPieceStructuresGen class representing the PieceStructures finisher generator
+
+/*
+This generator loads various pieces from "piecepool" files, and each such piecepool is then used in a separate
+cPieceGenerator instance.
+*/
+
+
+
+
+
+#pragma once
+
+#include "ComposableGenerator.h"
+#include "PrefabPiecePool.h"
+#include "GridStructGen.h"
+
+
+
+
+
+class cPieceStructuresGen :
+	public cFinishGen
+{
+	typedef cFinishGen Super;
+
+public:
+	cPieceStructuresGen(int a_Seed);
+
+	/** Initializes the generator based on the specified prefab sets.
+	a_Prefabs contains the list of prefab sets that should be activated, "|"-separated.
+	All problems are logged to the console and the generator skips over them.
+	Returns true if at least one prefab set is valid (the generator should be kept). */
+	bool Initialize(const AString & a_Prefabs, int a_SeaLevel, cBiomeGenPtr a_BiomeGen, cTerrainHeightGenPtr a_HeightGen);
+
+	// cFinishGen override:
+	virtual void GenFinish(cChunkDesc & a_ChunkDesc) override;
+
+protected:
+	class cGen:
+		public cGridStructGen
+	{
+		typedef cGridStructGen Super;
+	public:
+		cGen(int a_Seed, cBiomeGenPtr a_BiomeGen, cTerrainHeightGenPtr a_HeightGen, int a_SeaLevel, const AString & a_Name);
+
+		/** Loads the piecepool from a file.
+		Returns true on success, logs warning and returns false on failure. */
+		bool LoadFromFile(const AString & a_FileName);
+
+		// cGridStructGen overrides:
+		virtual cStructurePtr CreateStructure(int a_GridX, int a_GridZ, int a_OriginX, int a_OriginZ) override;
+
+	protected:
+
+		/** The underlying biome generator that defines whether the structure is created or not */
+		cBiomeGenPtr m_BiomeGen;
+	
+		/** The underlying height generator, used to position the prefabs crossing chunk borders if they are set to FitGround. */
+		cTerrainHeightGenPtr m_HeightGen;
+
+		/** The world's sea level, if available. Used for some cVerticalStrategy descendants. */
+		int m_SeaLevel;
+
+		/** The name that is used for reporting. */
+		AString m_Name;
+
+		/** All available prefabs. */
+		cPrefabPiecePool m_Pool;
+
+		/** Maximum depth of the generated piece tree. */
+		int m_MaxDepth;
+	};
+
+	typedef SharedPtr<cGen> cGenPtr;
+	typedef std::vector<cGenPtr> cGenPtrs;
+
+
+	/** The individual structure generators, one per piecepool. */
+	cGenPtrs m_Gens;
+
+	/** The seed for the random number generator */
+	int m_Seed;
+};
+
+
+
+