Preparation for multiple fluid simulators.

Moved all simulators into a subfolder.
Replaced cWaterSimulator and cLavaSimulator with a generic cFluidSimulator.
Moved original fluid simulation into cClassicFluidSimulator.
Fluid simulator parameters (MaxHeight, Falloff) are read from the world.ini file (can have nether-like lava with lower falloff)

git-svn-id: http://mc-server.googlecode.com/svn/trunk@956 0a769ca7-a7f5-676a-18bf-c427514a06d6

source/Simulator/SandSimulator.h

@@ -0,0 +1,33 @@
+
+#pragma once
+
+#include "Simulator.h"
+#include "../BlockEntity.h"
+#include "../Vector3i.h"
+
+
+
+
+
+class cSandSimulator : public cSimulator
+{
+public:
+	cSandSimulator( cWorld* a_World );
+	~cSandSimulator();
+
+	virtual void Simulate( float a_Dt ) override;
+
+	virtual bool IsAllowedBlock( BLOCKTYPE a_BlockType ) override;
+	virtual bool IsPassable( BLOCKTYPE a_BlockType );
+
+protected:
+	virtual void AddBlock(int a_X, int a_Y, int a_Z) override;
+
+	typedef std::list <Vector3i> BlockList;
+	BlockList * m_Blocks;
+	BlockList * m_Buffer;
+};
+
+
+
+