111 lines
2.4 KiB
C++
111 lines
2.4 KiB
C++
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#pragma once
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#include "Defines.h"
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// fwd: World.h
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class cWorld;
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class cPiston
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{
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public:
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cPiston(cWorld * a_World);
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static NIBBLETYPE RotationPitchToMetaData(double a_Rotation, double a_Pitch)
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{
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if (a_Pitch >= 50)
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{
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return 0x1;
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}
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else if (a_Pitch <= -50)
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{
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return 0x0;
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}
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else
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{
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a_Rotation += 90 + 45; // So its not aligned with axis
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if (a_Rotation > 360)
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{
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a_Rotation -= 360;
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}
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if ((a_Rotation >= 0) && (a_Rotation < 90))
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{
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return 0x4;
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}
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else if ((a_Rotation >= 180) && (a_Rotation < 270))
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{
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return 0x5;
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}
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else if ((a_Rotation >= 90) && (a_Rotation < 180))
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{
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return 0x2;
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}
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else
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{
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return 0x3;
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}
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}
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}
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static eBlockFace MetaDataToDirection(NIBBLETYPE a_MetaData)
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{
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switch (a_MetaData)
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{
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//case -1: return BLOCK_FACE_NONE; //can never happen as metadata is unsigned
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case 0x0: return BLOCK_FACE_YM;
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case 0x1: return BLOCK_FACE_YP;
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case 0x2: return BLOCK_FACE_ZM;
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case 0x3: return BLOCK_FACE_ZP;
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case 0x4: return BLOCK_FACE_XM;
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case 0x5: return BLOCK_FACE_XP;
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default:
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{
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ASSERT(!"Invalid Metadata");
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return BLOCK_FACE_NONE;
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}
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}
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}
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void ExtendPiston( int, int, int );
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void RetractPiston( int, int, int );
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/// Returns true if the piston (specified by blocktype) is a sticky piston
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static bool IsSticky(BLOCKTYPE a_BlockType);
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/// Returns true if the piston (with the specified meta) is extended
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static bool IsExtended(NIBBLETYPE a_PistonMeta);
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/// Returns true if the specified block can be pushed by a piston (and left intact)
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static bool CanPush(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta);
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/// Returns true if the specified block can be pushed by a piston and broken / replaced
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static bool CanBreakPush(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta);
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/// Returns true if the specified block can be pulled by a sticky piston
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static bool CanPull(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta);
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/// Updates the coords by the specified amount in the direction a piston of the specified meta is facing
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static void AddDir(int & a_BlockX, int & a_BlockY, int & a_BlockZ, NIBBLETYPE a_PistonMeta, int a_Amount);
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cWorld * m_World;
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private:
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void ChainMove( int, int, int, char, unsigned short * );
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/// Returns how many blocks the piston has to push (where the first free space is); <0 when unpushable
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int FirstPassthroughBlock(int a_PistonX, int a_PistonY, int a_PistonZ, NIBBLETYPE a_PistonMeta);
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} ;
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