#pragma once
#include "BlockHandler.h"
class cBlockPistonHandler :
public cBlockHandler
{
public:
cBlockPistonHandler(BLOCKTYPE a_BlockType);
virtual void OnDestroyed(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, int a_BlockX, int a_BlockY, int a_BlockZ) override;
virtual bool GetPlacementBlockTypeMeta(
cChunkInterface & a_ChunkInterface, cPlayer * a_Player,
int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace,
int a_CursorX, int a_CursorY, int a_CursorZ,
BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
) override;
static NIBBLETYPE RotationPitchToMetaData(double a_Rotation, double a_Pitch)
{
if (a_Pitch >= 50)
{
return 0x1;
}
else if (a_Pitch <= -50)
{
return 0x0;
}
else
{
a_Rotation += 90 + 45; // So its not aligned with axis
if (a_Rotation > 360)
{
a_Rotation -= 360;
}
if ((a_Rotation >= 0) && (a_Rotation < 90))
{
return 0x4;
}
else if ((a_Rotation >= 180) && (a_Rotation < 270))
{
return 0x5;
}
else if ((a_Rotation >= 90) && (a_Rotation < 180))
{
return 0x2;
}
else
{
return 0x3;
}
}
}
static eBlockFace MetaDataToDirection(NIBBLETYPE a_MetaData)
{
switch (a_MetaData)
{
case 0x0: return BLOCK_FACE_YM;
case 0x1: return BLOCK_FACE_YP;
case 0x2: return BLOCK_FACE_ZM;
case 0x3: return BLOCK_FACE_ZP;
case 0x4: return BLOCK_FACE_XM;
case 0x5: return BLOCK_FACE_XP;
default:
{
ASSERT(!"Invalid Metadata");
return BLOCK_FACE_NONE;
}
}
}
static void ExtendPiston(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
static void RetractPiston(int a_BlockX, int a_BlockY, int a_BlockZ, cWorld * a_World);
private:
/// Returns true if the piston (specified by blocktype) is a sticky piston
static inline bool IsSticky(BLOCKTYPE a_BlockType) { return (a_BlockType == E_BLOCK_STICKY_PISTON); }
/// Returns true if the piston (with the specified meta) is extended
static inline bool IsExtended(NIBBLETYPE a_PistonMeta) { return ((a_PistonMeta & 0x8) != 0x0); }
/// Returns true if the specified block can be pushed by a piston (and left intact)
static inline bool CanPush(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
{
switch (a_BlockType)
{
case E_BLOCK_ANVIL:
case E_BLOCK_BED:
case E_BLOCK_BEDROCK:
case E_BLOCK_BREWING_STAND:
case E_BLOCK_CHEST:
case E_BLOCK_COMMAND_BLOCK:
case E_BLOCK_DISPENSER:
case E_BLOCK_DROPPER:
case E_BLOCK_ENCHANTMENT_TABLE:
case E_BLOCK_END_PORTAL:
case E_BLOCK_END_PORTAL_FRAME:
case E_BLOCK_FURNACE:
case E_BLOCK_LIT_FURNACE:
case E_BLOCK_HOPPER:
case E_BLOCK_JUKEBOX:
case E_BLOCK_MOB_SPAWNER:
case E_BLOCK_NETHER_PORTAL:
case E_BLOCK_NOTE_BLOCK:
case E_BLOCK_OBSIDIAN:
case E_BLOCK_PISTON_EXTENSION:
{
return false;
}
case E_BLOCK_STICKY_PISTON:
case E_BLOCK_PISTON:
{
// A piston can only be pushed if retracted:
return !IsExtended(a_BlockMeta);
}
}
return true;
}
/// Returns true if the specified block can be pushed by a piston and broken / replaced
static inline bool CanBreakPush(BLOCKTYPE a_BlockType) { return cBlockInfo::IsPistonBreakable(a_BlockType); }
/// Returns true if the specified block can be pulled by a sticky piston
static inline bool CanPull(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
{
switch (a_BlockType)
{
case E_BLOCK_LAVA:
case E_BLOCK_STATIONARY_LAVA:
case E_BLOCK_STATIONARY_WATER:
case E_BLOCK_WATER:
{
return false;
}
}
return CanBreakPush(a_BlockType) ? false /* CanBreakPush returns true, but we need false to prevent pulling */ : CanPush(a_BlockType, a_BlockMeta);
}
/// Returns how many blocks the piston has to push (where the first free space is); < 0 when unpushable
static int FirstPassthroughBlock(int a_PistonX, int a_PistonY, int a_PistonZ, NIBBLETYPE a_PistonMeta, cWorld * a_World);
} ;
class cBlockPistonHeadHandler :
public cBlockHandler
{
typedef cBlockHandler super;
public:
cBlockPistonHeadHandler(void);
virtual void OnDestroyedByPlayer(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ) override;
virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
{
// No pickups
// Also with 1.7, the item forms of these technical blocks have been removed, so giving someone this will crash their client...
}
} ;
