#pragma once
#include "BlockEntity.h"
#include "../World.h"
enum ENUM_RAIL_DIRECTIONS
{
E_RAIL_NORTH_SOUTH = 0,
E_RAIL_EAST_WEST = 1,
E_RAIL_ASCEND_EAST = 2,
E_RAIL_ASCEND_WEST = 3,
E_RAIL_ASCEND_NORTH = 4,
E_RAIL_ASCEND_SOUTH = 5,
E_RAIL_CURVED_SOUTH_EAST = 6,
E_RAIL_CURVED_SOUTH_WEST = 7,
E_RAIL_CURVED_NORTH_WEST = 8,
E_RAIL_CURVED_NORTH_EAST = 9
};
enum ENUM_PURE
{
E_PURE_UPDOWN = 0,
E_PURE_DOWN = 1,
E_PURE_NONE = 2
};
class cBlockRailHandler :
public cBlockHandler
{
public:
cBlockRailHandler(BLOCKTYPE a_BlockType)
: cBlockHandler(a_BlockType)
{
}
virtual void PlaceBlock(cWorld * a_World, cPlayer * a_Player, NIBBLETYPE a_BlockMeta, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Dir) override
{
a_World->SetBlock(a_BlockX, a_BlockY, a_BlockZ, m_BlockType, FindMeta(a_World, a_BlockX, a_BlockY, a_BlockZ));
OnPlacedByPlayer(a_World, a_Player, a_BlockX, a_BlockY, a_BlockZ, a_Dir);
NeighborChanged(a_World, a_BlockX - 1, a_BlockY + 1, a_BlockZ);
NeighborChanged(a_World, a_BlockX + 1, a_BlockY + 1, a_BlockZ);
NeighborChanged(a_World, a_BlockX, a_BlockY + 1, a_BlockZ - 1);
NeighborChanged(a_World, a_BlockX, a_BlockY + 1, a_BlockZ + 1);
NeighborChanged(a_World, a_BlockX - 1, a_BlockY - 1, a_BlockZ);
NeighborChanged(a_World, a_BlockX + 1, a_BlockY - 1, a_BlockZ);
NeighborChanged(a_World, a_BlockX, a_BlockY - 1, a_BlockZ - 1);
NeighborChanged(a_World, a_BlockX, a_BlockY - 1, a_BlockZ + 1);
}
virtual void OnNeighborChanged(cWorld *a_World, int a_BlockX, int a_BlockY, int a_BlockZ) override
{
char Meta = a_World->GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ);
if(IsUnstable(a_World, a_BlockX, a_BlockY, a_BlockZ) && Meta != FindMeta(a_World, a_BlockX, a_BlockY, a_BlockZ))
a_World->FastSetBlock(a_BlockX, a_BlockY, a_BlockZ, m_BlockType, FindMeta(a_World, a_BlockX, a_BlockY, a_BlockZ));
}
virtual bool CanBeAt(cWorld *a_World, int a_BlockX, int a_BlockY, int a_BlockZ) override
{
if(!g_BlockIsSolid[a_World->GetBlock(a_BlockX, a_BlockY - 1, a_BlockZ)])
return false;
char Meta = a_World->GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ);
switch(Meta)
{
case E_RAIL_ASCEND_EAST:
{
if(!g_BlockIsSolid[a_World->GetBlock(a_BlockX + 1, a_BlockY, a_BlockZ)])
return false;
break;
}
case E_RAIL_ASCEND_WEST:
{
if(!g_BlockIsSolid[a_World->GetBlock(a_BlockX - 1, a_BlockY, a_BlockZ)])
return false;
break;
}
case E_RAIL_ASCEND_NORTH:
{
if(!g_BlockIsSolid[a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ - 1)])
return false;
break;
}
case E_RAIL_ASCEND_SOUTH:
{
if(!g_BlockIsSolid[a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ + 1)])
return false;
break;
}
}
return true;
}
char FindMeta(cWorld *a_World, int a_BlockX, int a_BlockY, int a_BlockZ)
{
char Meta = 0;
char RailsCnt = 0;
bool Neighbors[8]; // 0 - EAST, 1 - WEST, 2 - NORTH, 3 - SOUTH, 4 - EAST UP, 5 - WEST UP, 6 - NORTH UP, 7 - SOUTH UP
memset(Neighbors, false, sizeof(Neighbors));
if(IsUnstable(a_World, a_BlockX + 1, a_BlockY, a_BlockZ) || !IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_EAST, E_PURE_DOWN))
Neighbors[0] = true;
if(IsUnstable(a_World, a_BlockX - 1, a_BlockY, a_BlockZ) || !IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_WEST, E_PURE_DOWN))
Neighbors[1] = true;
if(IsUnstable(a_World, a_BlockX, a_BlockY, a_BlockZ - 1) || !IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_NORTH, E_PURE_DOWN))
Neighbors[2] = true;
if(IsUnstable(a_World, a_BlockX, a_BlockY, a_BlockZ + 1) || !IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_SOUTH, E_PURE_DOWN))
Neighbors[3] = true;
if(IsUnstable(a_World, a_BlockX + 1, a_BlockY + 1, a_BlockZ) || !IsNotConnected(a_World, a_BlockX, a_BlockY + 1, a_BlockZ, BLOCK_FACE_EAST, E_PURE_NONE))
Neighbors[4] = true;
if(IsUnstable(a_World, a_BlockX - 1, a_BlockY + 1, a_BlockZ) || !IsNotConnected(a_World, a_BlockX, a_BlockY + 1, a_BlockZ, BLOCK_FACE_WEST, E_PURE_NONE))
Neighbors[5] = true;
if(IsUnstable(a_World, a_BlockX, a_BlockY + 1, a_BlockZ - 1) || !IsNotConnected(a_World, a_BlockX, a_BlockY + 1, a_BlockZ, BLOCK_FACE_NORTH, E_PURE_NONE))
Neighbors[6] = true;
if(IsUnstable(a_World, a_BlockX, a_BlockY + 1, a_BlockZ + 1) || !IsNotConnected(a_World, a_BlockX, a_BlockY + 1, a_BlockZ, BLOCK_FACE_SOUTH, E_PURE_NONE))
Neighbors[7] = true;
if(IsUnstable(a_World, a_BlockX + 1, a_BlockY - 1, a_BlockZ) || !IsNotConnected(a_World, a_BlockX, a_BlockY - 1, a_BlockZ, BLOCK_FACE_EAST))
Neighbors[0] = true;
if(IsUnstable(a_World, a_BlockX - 1, a_BlockY - 1, a_BlockZ) || !IsNotConnected(a_World, a_BlockX, a_BlockY - 1, a_BlockZ, BLOCK_FACE_WEST))
Neighbors[1] = true;
if(IsUnstable(a_World, a_BlockX, a_BlockY - 1, a_BlockZ - 1) || !IsNotConnected(a_World, a_BlockX, a_BlockY - 1, a_BlockZ, BLOCK_FACE_NORTH))
Neighbors[2] = true;
if(IsUnstable(a_World, a_BlockX, a_BlockY - 1, a_BlockZ + 1) || !IsNotConnected(a_World, a_BlockX, a_BlockY - 1, a_BlockZ, BLOCK_FACE_SOUTH))
Neighbors[3] = true;
for(int i = 0; i < 8; i++)
{
if(Neighbors[i])
{
RailsCnt++;
}
}
if(RailsCnt == 1)
{
if(Neighbors[7]) Meta = E_RAIL_ASCEND_SOUTH;
else if(Neighbors[6]) Meta = E_RAIL_ASCEND_NORTH;
else if(Neighbors[5]) Meta = E_RAIL_ASCEND_WEST;
else if(Neighbors[4]) Meta = E_RAIL_ASCEND_EAST;
else if(Neighbors[0] || Neighbors[1]) Meta = E_RAIL_EAST_WEST;
else if(Neighbors[2] || Neighbors[3]) Meta = E_RAIL_NORTH_SOUTH;
return Meta;
}
for(int i = 0; i < 4; i++)
{
if(Neighbors[i+4])
{
Neighbors[i] = true;
}
}
if(RailsCnt > 1)
{
if(Neighbors[3] && Neighbors[0]) Meta = E_RAIL_CURVED_SOUTH_EAST;
else if(Neighbors[3] && Neighbors[1]) Meta = E_RAIL_CURVED_SOUTH_WEST;
else if(Neighbors[2] && Neighbors[0]) Meta = E_RAIL_CURVED_NORTH_EAST;
else if(Neighbors[2] && Neighbors[1]) Meta = E_RAIL_CURVED_NORTH_WEST;
else if(Neighbors[7] && Neighbors[2]) Meta = E_RAIL_ASCEND_SOUTH;
else if(Neighbors[3] && Neighbors[6]) Meta = E_RAIL_ASCEND_NORTH;
else if(Neighbors[5] && Neighbors[0]) Meta = E_RAIL_ASCEND_WEST;
else if(Neighbors[4] && Neighbors[1]) Meta = E_RAIL_ASCEND_EAST;
else if(Neighbors[0] && Neighbors[1]) Meta = E_RAIL_EAST_WEST;
else if(Neighbors[2] && Neighbors[3]) Meta = E_RAIL_NORTH_SOUTH;
}
return Meta;
}
bool IsUnstable(cWorld *a_World, int a_BlockX, int a_BlockY, int a_BlockZ)
{
if(a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ) != E_BLOCK_RAIL) return false;
char Meta = a_World->GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ);
switch(Meta)
{
case E_RAIL_NORTH_SOUTH:
{
if(IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_NORTH, E_PURE_DOWN) ||
IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_SOUTH, E_PURE_DOWN)) return true;
break;
}
case E_RAIL_EAST_WEST:
{
if(IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_EAST, E_PURE_DOWN) ||
IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_WEST, E_PURE_DOWN)) return true;
break;
}
case E_RAIL_ASCEND_EAST:
{
if(IsNotConnected(a_World, a_BlockX, a_BlockY + 1, a_BlockZ, BLOCK_FACE_EAST) ||
IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_WEST)) return true;
break;
}
case E_RAIL_ASCEND_WEST:
{
if(IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_EAST) ||
IsNotConnected(a_World, a_BlockX, a_BlockY + 1, a_BlockZ, BLOCK_FACE_WEST)) return true;
break;
}
case E_RAIL_ASCEND_NORTH:
{
if(IsNotConnected(a_World, a_BlockX, a_BlockY + 1, a_BlockZ, BLOCK_FACE_NORTH) ||
IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_SOUTH)) return true;
break;
}
case E_RAIL_ASCEND_SOUTH:
{
if(IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_NORTH) ||
IsNotConnected(a_World, a_BlockX, a_BlockY + 1, a_BlockZ, BLOCK_FACE_SOUTH)) return true;
break;
}
case E_RAIL_CURVED_SOUTH_EAST:
{
if(IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_SOUTH) ||
IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_EAST)) return true;
break;
}
case E_RAIL_CURVED_SOUTH_WEST:
{
if(IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_SOUTH) ||
IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_WEST)) return true;
break;
}
case E_RAIL_CURVED_NORTH_WEST:
{
if(IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_NORTH) ||
IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_WEST)) return true;
break;
}
case E_RAIL_CURVED_NORTH_EAST:
{
if(IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_NORTH) ||
IsNotConnected(a_World, a_BlockX, a_BlockY, a_BlockZ, BLOCK_FACE_EAST)) return true;
break;
}
}
return false;
}
bool IsNotConnected(cWorld *a_World, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Direction, char a_Pure = 0)
{
AddDirection(a_BlockX, a_BlockY, a_BlockZ, a_Direction, false);
char Meta;
if(a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ) != E_BLOCK_RAIL)
{
if((a_World->GetBlock(a_BlockX, a_BlockY + 1, a_BlockZ) != E_BLOCK_RAIL) || (a_Pure != E_PURE_UPDOWN))
{
if((a_World->GetBlock(a_BlockX, a_BlockY - 1, a_BlockZ) != E_BLOCK_RAIL) || (a_Pure == E_PURE_NONE))
{
return true;
}
else
{
Meta = a_World->GetBlockMeta(a_BlockX, a_BlockY - 1, a_BlockZ);
}
}
else
{
Meta = a_World->GetBlockMeta(a_BlockX, a_BlockY + 1, a_BlockZ);
}
}
else
{
Meta = a_World->GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ);
}
switch(a_Direction)
{
case BLOCK_FACE_NORTH:
{
if(Meta == E_RAIL_NORTH_SOUTH ||
Meta == E_RAIL_ASCEND_NORTH ||
Meta == E_RAIL_ASCEND_SOUTH ||
Meta == E_RAIL_CURVED_SOUTH_EAST ||
Meta == E_RAIL_CURVED_SOUTH_WEST)
return false;
break;
}
case BLOCK_FACE_SOUTH:
{
if(Meta == E_RAIL_NORTH_SOUTH ||
Meta == E_RAIL_ASCEND_NORTH ||
Meta == E_RAIL_ASCEND_SOUTH ||
Meta == E_RAIL_CURVED_NORTH_EAST ||
Meta == E_RAIL_CURVED_NORTH_WEST)
return false;
break;
}
case BLOCK_FACE_EAST:
{
if(Meta == E_RAIL_EAST_WEST ||
Meta == E_RAIL_ASCEND_EAST ||
Meta == E_RAIL_ASCEND_WEST ||
Meta == E_RAIL_CURVED_SOUTH_WEST ||
Meta == E_RAIL_CURVED_NORTH_WEST)
return false;
break;
}
case BLOCK_FACE_WEST:
{
if(Meta == E_RAIL_EAST_WEST ||
Meta == E_RAIL_ASCEND_EAST ||
Meta == E_RAIL_ASCEND_WEST ||
Meta == E_RAIL_CURVED_SOUTH_EAST ||
Meta == E_RAIL_CURVED_NORTH_EAST)
return false;
break;
}
}
return true;
}
} ;
