#pragma once
#include "BlockHandler.h"
#include "../World.h"
#include "../Entities/Player.h"
class cBlockDoorHandler :
public cBlockHandler
{
public:
cBlockDoorHandler(BLOCKTYPE a_BlockType);
virtual void OnDestroyed(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ) override;
virtual void OnUse(cWorld * a_World, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ) override;
virtual const char * GetStepSound(void) override;
virtual bool GetPlacementBlockTypeMeta(
cWorld * a_World, cPlayer * a_Player,
int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace,
int a_CursorX, int a_CursorY, int a_CursorZ,
BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
) override
{
// If clicking a bottom face, place the door one block lower:
if (a_BlockFace == BLOCK_FACE_BOTTOM)
{
a_BlockY--;
}
if (
!CanReplaceBlock(a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ)) ||
!CanReplaceBlock(a_World->GetBlock(a_BlockX, a_BlockY + 1, a_BlockZ))
)
{
return false;
}
a_BlockType = m_BlockType;
a_BlockMeta = PlayerYawToMetaData(a_Player->GetRotation());
return true;
}
virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
{
a_Pickups.push_back(cItem((m_BlockType == E_BLOCK_WOODEN_DOOR) ? E_ITEM_WOODEN_DOOR : E_ITEM_IRON_DOOR, 1, 0));
}
virtual void OnPlacedByPlayer(
cWorld * a_World, cPlayer * a_Player,
int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace,
int a_CursorX, int a_CursorY, int a_CursorZ,
BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta
) override;
virtual bool IsUseable(void) override
{
return true;
}
virtual bool CanBePlacedOnSide(void) override
{
return false;
}
virtual bool CanBeAt(int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
{
return ((a_RelY > 0) && (a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ) != E_BLOCK_AIR));
}
bool CanReplaceBlock(BLOCKTYPE a_BlockType)
{
switch (a_BlockType)
{
case E_BLOCK_AIR:
case E_BLOCK_TALL_GRASS:
case E_BLOCK_WATER:
case E_BLOCK_STATIONARY_WATER:
case E_BLOCK_LAVA:
case E_BLOCK_STATIONARY_LAVA:
case E_BLOCK_SNOW:
case E_BLOCK_FIRE:
{
return true;
}
}
return false;
}
/// Converts the player's yaw to placed door's blockmeta
inline static NIBBLETYPE PlayerYawToMetaData(double a_Yaw)
{
ASSERT((a_Yaw >= -180) && (a_Yaw < 180));
a_Yaw += 90 + 45;
if (a_Yaw > 360)
{
a_Yaw -= 360;
}
if ((a_Yaw >= 0) && (a_Yaw < 90))
{
return 0x0;
}
else if ((a_Yaw >= 180) && (a_Yaw < 270))
{
return 0x2;
}
else if ((a_Yaw >= 90) && (a_Yaw < 180))
{
return 0x1;
}
else
{
return 0x3;
}
}
/// Returns true if the specified blocktype is any kind of door
inline static bool IsDoor(BLOCKTYPE a_Block)
{
return (a_Block == E_BLOCK_WOODEN_DOOR) || (a_Block == E_BLOCK_IRON_DOOR);
}
/// Returns the metadata for the opposite door state (open vs closed)
static NIBBLETYPE ChangeStateMetaData(NIBBLETYPE a_MetaData)
{
return a_MetaData ^ 4;
}
/// Changes the door at the specified coords from open to close or vice versa
static void ChangeDoor(cWorld * a_World, int a_X, int a_Y, int a_Z)
{
NIBBLETYPE OldMetaData = a_World->GetBlockMeta(a_X, a_Y, a_Z);
a_World->SetBlockMeta(a_X, a_Y, a_Z, ChangeStateMetaData(OldMetaData));
if (OldMetaData & 8)
{
// Current block is top of the door
BLOCKTYPE BottomBlock = a_World->GetBlock(a_X, a_Y - 1, a_Z);
NIBBLETYPE BottomMeta = a_World->GetBlockMeta(a_X, a_Y - 1, a_Z);
if (IsDoor(BottomBlock) && !(BottomMeta & 8))
{
a_World->SetBlockMeta(a_X, a_Y - 1, a_Z, ChangeStateMetaData(BottomMeta));
}
}
else
{
// Current block is bottom of the door
BLOCKTYPE TopBlock = a_World->GetBlock(a_X, a_Y + 1, a_Z);
NIBBLETYPE TopMeta = a_World->GetBlockMeta(a_X, a_Y + 1, a_Z);
if (IsDoor(TopBlock) && (TopMeta & 8))
{
a_World->SetBlockMeta(a_X, a_Y + 1, a_Z, ChangeStateMetaData(TopMeta));
}
}
}
} ;
