diff options
Diffstat (limited to 'src/Blocks/BlockRail.h')
| -rw-r--r-- | src/Blocks/BlockRail.h | 398 |
1 files changed, 398 insertions, 0 deletions
diff --git a/src/Blocks/BlockRail.h b/src/Blocks/BlockRail.h new file mode 100644 index 000000000..24a101652 --- /dev/null +++ b/src/Blocks/BlockRail.h @@ -0,0 +1,398 @@ + +#pragma once + +#include "BlockEntity.h" +#include "../World.h" + + + + + +enum ENUM_PURE +{ + E_PURE_UPDOWN = 0, + E_PURE_DOWN = 1, + E_PURE_NONE = 2 +}; + + + + + +class cBlockRailHandler : + public cBlockHandler +{ + typedef cBlockHandler super; + +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 void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override + { + super::ConvertToPickups(a_Pickups, 0); + } + + + 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_META_RAIL_ASCEND_XP: + case E_META_RAIL_ASCEND_XM: + case E_META_RAIL_ASCEND_ZM: + case E_META_RAIL_ASCEND_ZP: + { + // Mapping between the meta and the neighbors that need checking + Meta -= E_META_RAIL_ASCEND_XP; // 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_META_RAIL_ASCEND_ZP; + else if (Neighbors[6]) return E_META_RAIL_ASCEND_ZM; + else if (Neighbors[5]) return E_META_RAIL_ASCEND_XM; + else if (Neighbors[4]) return E_META_RAIL_ASCEND_XP; + else if (Neighbors[0] || Neighbors[1]) return E_META_RAIL_XM_XP; + else if (Neighbors[2] || Neighbors[3]) return E_META_RAIL_ZM_ZP; + 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_META_RAIL_CURVED_ZP_XP; + else if (Neighbors[3] && Neighbors[1]) return E_META_RAIL_CURVED_ZP_XM; + else if (Neighbors[2] && Neighbors[0]) return E_META_RAIL_CURVED_ZM_XP; + else if (Neighbors[2] && Neighbors[1]) return E_META_RAIL_CURVED_ZM_XM; + else if (Neighbors[7] && Neighbors[2]) return E_META_RAIL_ASCEND_ZP; + else if (Neighbors[3] && Neighbors[6]) return E_META_RAIL_ASCEND_ZM; + else if (Neighbors[5] && Neighbors[0]) return E_META_RAIL_ASCEND_XM; + else if (Neighbors[4] && Neighbors[1]) return E_META_RAIL_ASCEND_XP; + else if (Neighbors[0] && Neighbors[1]) return E_META_RAIL_XM_XP; + else if (Neighbors[2] && Neighbors[3]) return E_META_RAIL_ZM_ZP; + 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_META_RAIL_ZM_ZP: + { + 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_META_RAIL_XM_XP: + { + 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_META_RAIL_ASCEND_XP: + { + 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_META_RAIL_ASCEND_XM: + { + 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_META_RAIL_ASCEND_ZM: + { + 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_META_RAIL_ASCEND_ZP: + { + 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_META_RAIL_CURVED_ZP_XP: + { + 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_META_RAIL_CURVED_ZP_XM: + { + 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_META_RAIL_CURVED_ZM_XM: + { + 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_META_RAIL_CURVED_ZM_XP: + { + 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_META_RAIL_ZM_ZP) || + (Meta == E_META_RAIL_ASCEND_ZM) || + (Meta == E_META_RAIL_ASCEND_ZP) || + (Meta == E_META_RAIL_CURVED_ZP_XP) || + (Meta == E_META_RAIL_CURVED_ZP_XM) + ) + { + return false; + } + break; + } + + case BLOCK_FACE_SOUTH: + { + if ( + (Meta == E_META_RAIL_ZM_ZP) || + (Meta == E_META_RAIL_ASCEND_ZM) || + (Meta == E_META_RAIL_ASCEND_ZP) || + (Meta == E_META_RAIL_CURVED_ZM_XP) || + (Meta == E_META_RAIL_CURVED_ZM_XM) + ) + { + return false; + } + break; + } + + case BLOCK_FACE_EAST: + { + if ( + (Meta == E_META_RAIL_XM_XP) || + (Meta == E_META_RAIL_ASCEND_XP) || + (Meta == E_META_RAIL_ASCEND_XM) || + (Meta == E_META_RAIL_CURVED_ZP_XM) || + (Meta == E_META_RAIL_CURVED_ZM_XM) + ) + { + return false; + } + break; + } + case BLOCK_FACE_WEST: + { + if ( + (Meta == E_META_RAIL_XM_XP) || + (Meta == E_META_RAIL_ASCEND_XP) || + (Meta == E_META_RAIL_ASCEND_XM) || + (Meta == E_META_RAIL_CURVED_ZP_XP) || + (Meta == E_META_RAIL_CURVED_ZM_XP) + ) + { + return false; + } + break; + } + } + return true; + } +} ; + + + + |