Added the End height and composition generators.

Also made the dimension in world.ini specifiable by a string. Exported StringToDimension() and StringToBiome() to Lua API.

git-svn-id: http://mc-server.googlecode.com/svn/trunk@1621 0a769ca7-a7f5-676a-18bf-c427514a06d6

source/Generating/EndGen.h

@@ -0,0 +1,69 @@
+
+// EndGen.h
+
+// Declares the cEndGen class representing the generator for the End, both as a HeightGen and CompositionGen
+
+
+
+
+
+#pragma once
+
+#include "ComposableGenerator.h"
+#include "../Noise.h"
+
+
+
+
+
+class cEndGen :
+	public cTerrainHeightGen,
+	public cTerrainCompositionGen
+{
+public:
+	cEndGen(int a_Seed);
+	
+	void Initialize(cIniFile & a_IniFile);
+	
+protected:
+
+	/// Seed for the noise
+	int m_Seed;
+	
+	/// The Perlin noise used for generating
+	cPerlinNoise m_Perlin;
+
+	// XYZ size of the "island", in blocks:
+	int m_IslandSizeX;
+	int m_IslandSizeY;
+	int m_IslandSizeZ;
+	
+	// XYZ Frequencies of the noise functions:
+	NOISE_DATATYPE m_FrequencyX;
+	NOISE_DATATYPE m_FrequencyY;
+	NOISE_DATATYPE m_FrequencyZ;
+	
+	// Minimum and maximum chunk coords for chunks inside the island area. Chunks outside won't get calculated at all
+	int m_MinChunkX, m_MaxChunkX;
+	int m_MinChunkZ, m_MaxChunkZ;
+	
+	// Noise array for the last chunk (in the noise range)
+	int m_LastChunkX;
+	int m_LastChunkZ;
+	NOISE_DATATYPE m_NoiseArray[17 * 17 * 257];  // x + 17 * z + 17 * 17 * y
+	
+	/// Unless the LastChunk coords are equal to coords given, prepares the internal state (noise array)
+	void PrepareState(int a_ChunkX, int a_ChunkZ);
+	
+	/// Generates the m_NoiseArray array for the current chunk
+	void GenerateNoiseArray(void);
+	
+	/// Returns true if the chunk is outside of the island's dimensions
+	bool IsChunkOutsideRange(int a_ChunkX, int a_ChunkZ);
+		
+	// cTerrainHeightGen overrides:
+	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;
+
+	// cTerrainCompositionGen overrides:
+	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) override;
+} ;