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#pragma once
#include "BlockHandler.h"
#include <unordered_set>
class cWorld;
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 void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) 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 & 0x7) // We only want the bottom three bits (4th controls extended-ness))
{
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;
}
}
}
/** Converts piston block's metadata into a unit vector representing the direction in which the piston will extend. */
static Vector3i MetadataToOffset(NIBBLETYPE a_PistonMeta);
static void ExtendPiston(Vector3i a_BlockPos, cWorld & a_World);
static void RetractPiston(Vector3i a_BlockPos, cWorld & a_World);
virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override
{
UNUSED(a_Meta);
return 11;
}
/** Returns true if the piston (with the specified meta) is extended */
static inline bool IsExtended(NIBBLETYPE a_PistonMeta) { return ((a_PistonMeta & 0x8) != 0x0); }
private:
typedef std::unordered_set<Vector3i, VectorHasher<int>> Vector3iSet;
/** Piston extension block action */
static const Byte PistonExtendAction = 0U;
/** Piston retraction block action */
static const Byte PistonRetractAction = 1U;
/** 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 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_BARRIER:
case E_BLOCK_BEACON:
case E_BLOCK_BEDROCK:
case E_BLOCK_BREWING_STAND:
case E_BLOCK_CHAIN_COMMAND_BLOCK:
case E_BLOCK_CHEST:
case E_BLOCK_COMMAND_BLOCK:
case E_BLOCK_DAYLIGHT_SENSOR:
case E_BLOCK_DISPENSER:
case E_BLOCK_DROPPER:
case E_BLOCK_ENCHANTMENT_TABLE:
case E_BLOCK_END_GATEWAY:
case E_BLOCK_END_PORTAL:
case E_BLOCK_END_PORTAL_FRAME:
// Notice the lack of an E_BLOCK_ENDER_CHEST here; its because ender chests can totally be pushed / pulled in MCS :)
case E_BLOCK_FURNACE:
case E_BLOCK_LIT_FURNACE:
case E_BLOCK_INVERTED_DAYLIGHT_SENSOR:
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:
case E_BLOCK_REPEATING_COMMAND_BLOCK:
case E_BLOCK_STANDING_BANNER:
case E_BLOCK_STRUCTURE_BLOCK:
case E_BLOCK_TRAPPED_CHEST:
case E_BLOCK_WALL_BANNER:
{
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;
}
/** Tries to push a block and increases the pushed blocks variable. Returns true if the block is pushable */
static bool CanPushBlock(
const Vector3i & a_BlockPos, cWorld & a_World, bool a_RequirePushable,
Vector3iSet & a_BlocksPushed, const Vector3i & a_PushDir
);
/** Moves a list of blocks in a specific direction */
static void PushBlocks(const Vector3iSet & a_BlocksToPush,
cWorld & a_World, const Vector3i & a_PushDir
);
} ;
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...
}
} ;
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