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-rw-r--r--source/Blocks/BlockRail.h842
1 files changed, 421 insertions, 421 deletions
diff --git a/source/Blocks/BlockRail.h b/source/Blocks/BlockRail.h
index 60865abf5..65d120923 100644
--- a/source/Blocks/BlockRail.h
+++ b/source/Blocks/BlockRail.h
@@ -1,421 +1,421 @@
-
-#pragma once
-
-#include "BlockEntity.h"
-#include "../World.h"
-
-
-
-
-
-/// Meta values for the rail
-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,
-
- // Some useful synonyms:
- E_RAIL_DIR_X = E_RAIL_EAST_WEST,
- E_RAIL_DIR_Z = E_RAIL_NORTH_SOUTH,
- E_RAIL_ASCEND_XP = E_RAIL_ASCEND_EAST,
- E_RAIL_ASCEND_XM = E_RAIL_ASCEND_WEST,
- E_RAIL_ASCEND_ZM = E_RAIL_ASCEND_NORTH,
- E_RAIL_ASCEND_ZP = E_RAIL_ASCEND_SOUTH,
- E_RAIL_CURVED_XPZP = E_RAIL_CURVED_SOUTH_EAST,
- E_RAIL_CURVED_XMZP = E_RAIL_CURVED_SOUTH_WEST,
- E_RAIL_CURVED_XMZM = E_RAIL_CURVED_NORTH_WEST,
- E_RAIL_CURVED_XPZM = E_RAIL_CURVED_NORTH_EAST,
-} ;
-
-
-
-
-
-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 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
- {
- a_BlockType = m_BlockType;
- a_BlockMeta = FindMeta(a_World, a_BlockX, a_BlockY, a_BlockZ);
- return true;
- }
-
-
- virtual void OnNeighborChanged(cWorld *a_World, int a_BlockX, int a_BlockY, int a_BlockZ) override
- {
- NIBBLETYPE 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(int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
- {
- if (a_RelY <= 0)
- {
- return false;
- }
- if (!g_BlockIsSolid[a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ)])
- {
- return false;
- }
-
- NIBBLETYPE Meta = a_Chunk.GetMeta(a_RelX, a_RelY, a_RelZ);
- switch (Meta)
- {
- case E_RAIL_ASCEND_EAST:
- case E_RAIL_ASCEND_WEST:
- case E_RAIL_ASCEND_NORTH:
- case E_RAIL_ASCEND_SOUTH:
- {
- // Mapping between the meta and the neighbors that need checking
- Meta -= E_RAIL_ASCEND_EAST; // Base index at zero
- static const struct
- {
- int x, z;
- } Coords[] =
- {
- { 1, 0}, // east, XP
- {-1, 0}, // west, XM
- { 0, -1}, // north, ZM
- { 0, 1}, // south, ZP
- } ;
- BLOCKTYPE BlockType;
- NIBBLETYPE BlockMeta;
- if (!a_Chunk.UnboundedRelGetBlock(a_RelX + Coords[Meta].x, a_RelY, a_RelZ + Coords[Meta].z, BlockType, BlockMeta))
- {
- // Too close to the edge, cannot simulate
- return true;
- }
- return g_BlockIsSolid[BlockType];
- }
- }
- return true;
- }
-
- NIBBLETYPE FindMeta(cWorld *a_World, int a_BlockX, int a_BlockY, int a_BlockZ)
- {
- NIBBLETYPE 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));
- Neighbors[0] = (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[1] = (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[2] = (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[3] = (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[4] = (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[5] = (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[6] = (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[7] = (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));
- 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]) return E_RAIL_ASCEND_SOUTH;
- else if (Neighbors[6]) return E_RAIL_ASCEND_NORTH;
- else if (Neighbors[5]) return E_RAIL_ASCEND_WEST;
- else if (Neighbors[4]) return E_RAIL_ASCEND_EAST;
- else if (Neighbors[0] || Neighbors[1]) return E_RAIL_EAST_WEST;
- else if (Neighbors[2] || Neighbors[3]) return E_RAIL_NORTH_SOUTH;
- ASSERT(!"Weird neighbor count");
- return Meta;
- }
- for (int i = 0; i < 4; i++)
- {
- if (Neighbors[i + 4])
- {
- Neighbors[i] = true;
- }
- }
- if (RailsCnt > 1)
- {
- if (Neighbors[3] && Neighbors[0]) return E_RAIL_CURVED_SOUTH_EAST;
- else if (Neighbors[3] && Neighbors[1]) return E_RAIL_CURVED_SOUTH_WEST;
- else if (Neighbors[2] && Neighbors[0]) return E_RAIL_CURVED_NORTH_EAST;
- else if (Neighbors[2] && Neighbors[1]) return E_RAIL_CURVED_NORTH_WEST;
- else if (Neighbors[7] && Neighbors[2]) return E_RAIL_ASCEND_SOUTH;
- else if (Neighbors[3] && Neighbors[6]) return E_RAIL_ASCEND_NORTH;
- else if (Neighbors[5] && Neighbors[0]) return E_RAIL_ASCEND_WEST;
- else if (Neighbors[4] && Neighbors[1]) return E_RAIL_ASCEND_EAST;
- else if (Neighbors[0] && Neighbors[1]) return E_RAIL_EAST_WEST;
- else if (Neighbors[2] && Neighbors[3]) return E_RAIL_NORTH_SOUTH;
- ASSERT(!"Weird neighbor count");
- }
- 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;
- }
- NIBBLETYPE 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_BlockFace, char a_Pure = 0)
- {
- AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, false);
- NIBBLETYPE 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_BlockFace)
- {
- 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;
- }
-} ;
-
-
-
-
+
+#pragma once
+
+#include "BlockEntity.h"
+#include "../World.h"
+
+
+
+
+
+/// Meta values for the rail
+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,
+
+ // Some useful synonyms:
+ E_RAIL_DIR_X = E_RAIL_EAST_WEST,
+ E_RAIL_DIR_Z = E_RAIL_NORTH_SOUTH,
+ E_RAIL_ASCEND_XP = E_RAIL_ASCEND_EAST,
+ E_RAIL_ASCEND_XM = E_RAIL_ASCEND_WEST,
+ E_RAIL_ASCEND_ZM = E_RAIL_ASCEND_NORTH,
+ E_RAIL_ASCEND_ZP = E_RAIL_ASCEND_SOUTH,
+ E_RAIL_CURVED_XPZP = E_RAIL_CURVED_SOUTH_EAST,
+ E_RAIL_CURVED_XMZP = E_RAIL_CURVED_SOUTH_WEST,
+ E_RAIL_CURVED_XMZM = E_RAIL_CURVED_NORTH_WEST,
+ E_RAIL_CURVED_XPZM = E_RAIL_CURVED_NORTH_EAST,
+} ;
+
+
+
+
+
+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 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
+ {
+ a_BlockType = m_BlockType;
+ a_BlockMeta = FindMeta(a_World, a_BlockX, a_BlockY, a_BlockZ);
+ return true;
+ }
+
+
+ virtual void OnNeighborChanged(cWorld *a_World, int a_BlockX, int a_BlockY, int a_BlockZ) override
+ {
+ NIBBLETYPE 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(int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
+ {
+ if (a_RelY <= 0)
+ {
+ return false;
+ }
+ if (!g_BlockIsSolid[a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ)])
+ {
+ return false;
+ }
+
+ NIBBLETYPE Meta = a_Chunk.GetMeta(a_RelX, a_RelY, a_RelZ);
+ switch (Meta)
+ {
+ case E_RAIL_ASCEND_EAST:
+ case E_RAIL_ASCEND_WEST:
+ case E_RAIL_ASCEND_NORTH:
+ case E_RAIL_ASCEND_SOUTH:
+ {
+ // Mapping between the meta and the neighbors that need checking
+ Meta -= E_RAIL_ASCEND_EAST; // Base index at zero
+ static const struct
+ {
+ int x, z;
+ } Coords[] =
+ {
+ { 1, 0}, // east, XP
+ {-1, 0}, // west, XM
+ { 0, -1}, // north, ZM
+ { 0, 1}, // south, ZP
+ } ;
+ BLOCKTYPE BlockType;
+ NIBBLETYPE BlockMeta;
+ if (!a_Chunk.UnboundedRelGetBlock(a_RelX + Coords[Meta].x, a_RelY, a_RelZ + Coords[Meta].z, BlockType, BlockMeta))
+ {
+ // Too close to the edge, cannot simulate
+ return true;
+ }
+ return g_BlockIsSolid[BlockType];
+ }
+ }
+ return true;
+ }
+
+ NIBBLETYPE FindMeta(cWorld *a_World, int a_BlockX, int a_BlockY, int a_BlockZ)
+ {
+ NIBBLETYPE 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));
+ Neighbors[0] = (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[1] = (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[2] = (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[3] = (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[4] = (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[5] = (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[6] = (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[7] = (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));
+ 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]) return E_RAIL_ASCEND_SOUTH;
+ else if (Neighbors[6]) return E_RAIL_ASCEND_NORTH;
+ else if (Neighbors[5]) return E_RAIL_ASCEND_WEST;
+ else if (Neighbors[4]) return E_RAIL_ASCEND_EAST;
+ else if (Neighbors[0] || Neighbors[1]) return E_RAIL_EAST_WEST;
+ else if (Neighbors[2] || Neighbors[3]) return E_RAIL_NORTH_SOUTH;
+ ASSERT(!"Weird neighbor count");
+ return Meta;
+ }
+ for (int i = 0; i < 4; i++)
+ {
+ if (Neighbors[i + 4])
+ {
+ Neighbors[i] = true;
+ }
+ }
+ if (RailsCnt > 1)
+ {
+ if (Neighbors[3] && Neighbors[0]) return E_RAIL_CURVED_SOUTH_EAST;
+ else if (Neighbors[3] && Neighbors[1]) return E_RAIL_CURVED_SOUTH_WEST;
+ else if (Neighbors[2] && Neighbors[0]) return E_RAIL_CURVED_NORTH_EAST;
+ else if (Neighbors[2] && Neighbors[1]) return E_RAIL_CURVED_NORTH_WEST;
+ else if (Neighbors[7] && Neighbors[2]) return E_RAIL_ASCEND_SOUTH;
+ else if (Neighbors[3] && Neighbors[6]) return E_RAIL_ASCEND_NORTH;
+ else if (Neighbors[5] && Neighbors[0]) return E_RAIL_ASCEND_WEST;
+ else if (Neighbors[4] && Neighbors[1]) return E_RAIL_ASCEND_EAST;
+ else if (Neighbors[0] && Neighbors[1]) return E_RAIL_EAST_WEST;
+ else if (Neighbors[2] && Neighbors[3]) return E_RAIL_NORTH_SOUTH;
+ ASSERT(!"Weird neighbor count");
+ }
+ 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;
+ }
+ NIBBLETYPE 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_BlockFace, char a_Pure = 0)
+ {
+ AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, false);
+ NIBBLETYPE 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_BlockFace)
+ {
+ 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;
+ }
+} ;
+
+
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 06:53:48 +0100