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-rw-r--r--src/Blocks/BlockTorch.h275
1 files changed, 275 insertions, 0 deletions
diff --git a/src/Blocks/BlockTorch.h b/src/Blocks/BlockTorch.h
new file mode 100644
index 000000000..72a313126
--- /dev/null
+++ b/src/Blocks/BlockTorch.h
@@ -0,0 +1,275 @@
+#pragma once
+
+#include "BlockHandler.h"
+#include "../World.h"
+
+
+
+
+
+class cBlockTorchHandler :
+ public cBlockHandler
+{
+public:
+ cBlockTorchHandler(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
+ {
+ // Find proper placement of torch
+
+ if ((a_BlockFace == BLOCK_FACE_TOP) || (a_BlockFace == BLOCK_FACE_BOTTOM))
+ {
+ a_BlockFace = FindSuitableFace(a_World, a_BlockX, a_BlockY, a_BlockZ); // Top or bottom faces clicked, find a suitable face
+ if (a_BlockFace == BLOCK_FACE_NONE)
+ {
+ // Client wouldn't have sent anything anyway, but whatever
+ return false;
+ }
+ }
+ else
+ {
+ // Not top or bottom faces, try to preserve whatever face was clicked
+ if (!TorchCanBePlacedAt(a_World, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace))
+ {
+ // Torch couldn't be placed on whatever face was clicked, last ditch resort - find another face
+ a_BlockFace = FindSuitableFace(a_World, a_BlockX, a_BlockY, a_BlockZ);
+ if (a_BlockFace == BLOCK_FACE_NONE)
+ {
+ return false;
+ }
+ }
+ }
+
+ a_BlockType = m_BlockType;
+ a_BlockMeta = DirectionToMetaData(a_BlockFace);
+ return true;
+ }
+
+
+ static NIBBLETYPE DirectionToMetaData(char a_Direction) // tolua_export
+ { // tolua_export
+ switch (a_Direction)
+ {
+ case BLOCK_FACE_BOTTOM: ASSERT(!"Shouldn't be getting this face"); return 0;
+ case BLOCK_FACE_TOP: return E_META_TORCH_FLOOR;
+ case BLOCK_FACE_EAST: return E_META_TORCH_EAST;
+ case BLOCK_FACE_WEST: return E_META_TORCH_WEST;
+ case BLOCK_FACE_NORTH: return E_META_TORCH_NORTH;
+ case BLOCK_FACE_SOUTH: return E_META_TORCH_SOUTH;
+ default:
+ {
+ ASSERT(!"Unhandled torch direction!");
+ break;
+ }
+ };
+ return 0x0;
+ } // tolua_export
+
+
+ static char MetaDataToDirection(NIBBLETYPE a_MetaData) // tolua_export
+ { // tolua_export
+ switch (a_MetaData)
+ {
+ case 0: return BLOCK_FACE_TOP; // by default, the torches stand on the ground
+ case E_META_TORCH_FLOOR: return BLOCK_FACE_TOP;
+ case E_META_TORCH_EAST: return BLOCK_FACE_EAST;
+ case E_META_TORCH_WEST: return BLOCK_FACE_WEST;
+ case E_META_TORCH_NORTH: return BLOCK_FACE_NORTH;
+ case E_META_TORCH_SOUTH: return BLOCK_FACE_SOUTH;
+ default:
+ {
+ ASSERT(!"Unhandled torch metadata");
+ break;
+ }
+ }
+ return 0;
+ } // tolua_export
+
+
+ static bool IsAttachedTo(const Vector3i & a_TorchPos, char a_TorchMeta, const Vector3i & a_BlockPos)
+ {
+ switch (a_TorchMeta)
+ {
+ case 0x0:
+ case E_META_TORCH_FLOOR: return ((a_TorchPos - a_BlockPos).Equals(Vector3i(0, 1, 0)));
+ case E_META_TORCH_EAST: return ((a_TorchPos - a_BlockPos).Equals(Vector3i(0, 0, -1)));
+ case E_META_TORCH_WEST: return ((a_TorchPos - a_BlockPos).Equals(Vector3i(0, 0, 1)));
+ case E_META_TORCH_NORTH: return ((a_TorchPos - a_BlockPos).Equals(Vector3i(-1, 0, 0)));
+ case E_META_TORCH_SOUTH: return ((a_TorchPos - a_BlockPos).Equals(Vector3i(1, 0, 0)));
+ default:
+ {
+ ASSERT(!"Unhandled torch meta!");
+ break;
+ }
+ }
+ return false;
+ }
+
+
+ static bool CanBePlacedOn(BLOCKTYPE a_BlockType, char a_BlockFace)
+ {
+ if ( !g_BlockIsTorchPlaceable[a_BlockType] )
+ {
+ return (a_BlockFace == BLOCK_FACE_TOP); // Allow placement only when torch upright
+ }
+ else
+ {
+ return true;
+ }
+ }
+
+
+ static bool TorchCanBePlacedAt(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ, char a_BlockFace)
+ {
+ AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, true);
+ return CanBePlacedOn(a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ), a_BlockFace);
+ }
+
+
+ /// Finds a suitable face to place the torch, returning BLOCK_FACE_NONE on failure
+ static char FindSuitableFace(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ)
+ {
+ for (int i = 0; i <= 5; i++)
+ {
+ AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, i, true);
+ BLOCKTYPE BlockInQuestion = a_World->GetBlock(a_BlockX, a_BlockY, a_BlockZ);
+
+ if (
+ ((BlockInQuestion == E_BLOCK_GLASS) ||
+ (BlockInQuestion == E_BLOCK_FENCE) ||
+ (BlockInQuestion == E_BLOCK_NETHER_BRICK_FENCE) ||
+ (BlockInQuestion == E_BLOCK_COBBLESTONE_WALL)) &&
+ (i == BLOCK_FACE_TOP)
+ )
+ {
+ return i;
+ }
+ else if ((g_BlockIsTorchPlaceable[BlockInQuestion]) && (i != BLOCK_FACE_BOTTOM))
+ {
+ return i;
+ }
+ else
+ {
+ AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, i, false);
+ }
+ }
+ return BLOCK_FACE_NONE;
+ }
+
+
+ virtual bool CanBeAt(int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
+ {
+ char Face = MetaDataToDirection(a_Chunk.GetMeta(a_RelX, a_RelY, a_RelZ));
+
+ AddFaceDirection(a_RelX, a_RelY, a_RelZ, Face, true);
+ BLOCKTYPE BlockInQuestion;
+ a_Chunk.UnboundedRelGetBlockType(a_RelX, a_RelY, a_RelZ, BlockInQuestion);
+
+ if (
+ (BlockInQuestion == E_BLOCK_GLASS) ||
+ (BlockInQuestion == E_BLOCK_FENCE) ||
+ (BlockInQuestion == E_BLOCK_NETHER_BRICK_FENCE) ||
+ (BlockInQuestion == E_BLOCK_COBBLESTONE_WALL)
+ )
+ {
+ // Torches can be placed on tops of glass and fences, despite them being 'untorcheable'
+ // No need to check for upright orientation, it was done when the torch was placed
+ return true;
+ }
+ else if ( !g_BlockIsTorchPlaceable[BlockInQuestion] )
+ {
+ return false;
+ }
+ else
+ {
+ return true;
+ }
+ }
+
+
+ virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
+ {
+ // Always drop meta = 0
+ a_Pickups.push_back(cItem(m_BlockType, 1, 0));
+ }
+
+
+ virtual const char * GetStepSound(void) override
+ {
+ return "step.wood";
+ }
+
+
+ virtual NIBBLETYPE MetaRotateCCW(NIBBLETYPE a_Meta) override
+ {
+ // Bit 4 stays, the rest is swapped around according to a table:
+ NIBBLETYPE TopBits = (a_Meta & 0x08);
+ switch (a_Meta & 0x07)
+ {
+ case 0x01: return TopBits | 0x04; // East -> North
+ case 0x02: return TopBits | 0x03; // West -> South
+ case 0x03: return TopBits | 0x01; // South -> East
+ case 0x04: return TopBits | 0x02; // North -> West
+ default: return a_Meta; // Floor -> Floor
+ }
+ }
+
+
+ virtual NIBBLETYPE MetaRotateCW(NIBBLETYPE a_Meta) override
+ {
+ // Bit 4 stays, the rest is swapped around according to a table:
+ NIBBLETYPE TopBits = (a_Meta & 0x08);
+ switch (a_Meta & 0x07)
+ {
+ case 0x01: return TopBits | 0x03; // East -> South
+ case 0x02: return TopBits | 0x04; // West -> North
+ case 0x03: return TopBits | 0x02; // South -> West
+ case 0x04: return TopBits | 0x01; // North -> East
+ default: return a_Meta; // Floor -> Floor
+ }
+ }
+
+
+ virtual NIBBLETYPE MetaMirrorXY(NIBBLETYPE a_Meta) override
+ {
+ // Bit 4 stays, the rest is swapped around according to a table:
+ NIBBLETYPE TopBits = (a_Meta & 0x08);
+ switch (a_Meta & 0x07)
+ {
+ case 0x03: return TopBits | 0x04; // South -> North
+ case 0x04: return TopBits | 0x03; // North -> South
+ default: return a_Meta; // Keep the rest
+ }
+ }
+
+
+ // Mirroring around the XZ plane doesn't make sense for floor torches,
+ // the others stay the same, so let's keep all the metas the same.
+ // The base class does tht for us, no need to override MetaMirrorXZ()
+
+
+ virtual NIBBLETYPE MetaMirrorYZ(NIBBLETYPE a_Meta) override
+ {
+ // Bit 4 stays, the rest is swapped around according to a table:
+ NIBBLETYPE TopBits = (a_Meta & 0x08);
+ switch (a_Meta & 0x07)
+ {
+ case 0x01: return TopBits | 0x02; // East -> West
+ case 0x02: return TopBits | 0x01; // West -> East
+ default: return a_Meta; // Keep the rest
+ }
+ }
+} ;
+
+
+
+
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