322 lines
8.4 KiB
C++
322 lines
8.4 KiB
C++
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#pragma once
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#include "BlockHandler.h"
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#include "../BlockInfo.h"
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#include "../Entities/Player.h"
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#include "../Chunk.h"
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#include "Mixins.h"
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#include "ChunkInterface.h"
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#include "BlockSlab.h"
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class cBlockDoorHandler :
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public cYawRotator<cBlockHandler, 0x03, 0x03, 0x00, 0x01, 0x02>
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{
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using Super = cYawRotator<cBlockHandler, 0x03, 0x03, 0x00, 0x01, 0x02>;
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public:
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using Super::Super;
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/** Returns true if door can be placed on the specified block type. */
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static bool CanBeOn(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
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{
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// Vanilla refuses to place doors on transparent blocks, except top-half slabs and other doors
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// We need to keep the door compatible with itself, otherwise the top half drops while the bottom half stays
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// Doors can be placed on upside-down slabs
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if (cBlockSlabHandler::IsAnySlabType(a_BlockType) && ((a_BlockMeta & 0x08) != 0))
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{
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return true;
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}
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// Doors can also be placed on other doors
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else if (IsDoorBlockType(a_BlockType))
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{
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return true;
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}
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// Doors can not be placed on transparent blocks, but on any other block
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else
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{
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return !cBlockInfo::IsTransparent(a_BlockType);
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}
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}
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static bool CanReplaceBlock(BLOCKTYPE a_BlockType)
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{
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switch (a_BlockType)
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{
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case E_BLOCK_AIR:
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case E_BLOCK_TALL_GRASS:
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case E_BLOCK_WATER:
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case E_BLOCK_STATIONARY_WATER:
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case E_BLOCK_LAVA:
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case E_BLOCK_STATIONARY_LAVA:
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case E_BLOCK_SNOW:
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case E_BLOCK_FIRE:
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{
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return true;
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}
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}
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return false;
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}
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/** Returns a vector pointing one block in the direction the door is facing (where the outside is). */
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inline static Vector3i GetRelativeDirectionToOutside(NIBBLETYPE a_BlockMeta)
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{
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switch (a_BlockMeta & 0x03)
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{
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case 0: return Vector3i(-1, 0, 0); // Facing West / XM
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case 1: return Vector3i(0, 0, -1); // Facing North / ZM
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case 2: return Vector3i(1, 0, 0); // Facing East / XP
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default: return Vector3i(0, 0, 1); // Facing South / ZP
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}
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}
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/** Returns true if the specified blocktype is any kind of door */
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inline static bool IsDoorBlockType(BLOCKTYPE a_Block)
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{
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switch (a_Block)
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{
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case E_BLOCK_ACACIA_DOOR:
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case E_BLOCK_BIRCH_DOOR:
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case E_BLOCK_DARK_OAK_DOOR:
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case E_BLOCK_IRON_DOOR:
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case E_BLOCK_JUNGLE_DOOR:
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case E_BLOCK_SPRUCE_DOOR:
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case E_BLOCK_OAK_DOOR:
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{
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return true;
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}
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default:
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{
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return false;
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}
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}
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}
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/** Sets the door to the specified state. If the door is already in that state, does nothing. */
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static void SetOpen(cChunkInterface & a_ChunkInterface, const Vector3i a_BlockPos, bool a_Open)
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{
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BLOCKTYPE Block = a_ChunkInterface.GetBlock(a_BlockPos);
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if (!IsDoorBlockType(Block))
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{
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return;
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}
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NIBBLETYPE Meta = GetCompleteDoorMeta(a_ChunkInterface, a_BlockPos);
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bool IsOpened = ((Meta & 0x04) != 0);
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if (IsOpened == a_Open)
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{
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return;
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}
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// Change the door
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NIBBLETYPE NewMeta = (Meta & 0x07) ^ 0x04; // Flip the "IsOpen" bit (0x04)
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if ((Meta & 0x08) == 0)
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{
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// The block is the bottom part of the door
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a_ChunkInterface.SetBlockMeta(a_BlockPos, NewMeta);
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}
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else
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{
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// The block is the top part of the door, set the meta to the corresponding top part
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if (a_BlockPos.y > 0)
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{
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a_ChunkInterface.SetBlockMeta(a_BlockPos.addedY(-1), NewMeta);
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}
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}
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}
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private:
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virtual void OnBroken(
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cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface,
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Vector3i a_BlockPos,
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BLOCKTYPE a_OldBlockType, NIBBLETYPE a_OldBlockMeta
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) const override;
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virtual bool OnUse(
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cChunkInterface & a_ChunkInterface,
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cWorldInterface & a_WorldInterface,
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cPlayer & a_Player,
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const Vector3i a_BlockPos,
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eBlockFace a_BlockFace,
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const Vector3i a_CursorPos
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) const override;
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virtual void OnCancelRightClick(
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cChunkInterface & a_ChunkInterface,
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cWorldInterface & a_WorldInterface,
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cPlayer & a_Player,
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const Vector3i a_BlockPos,
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eBlockFace a_BlockFace
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) const override;
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virtual NIBBLETYPE MetaRotateCCW(NIBBLETYPE a_Meta) const override;
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virtual NIBBLETYPE MetaRotateCW(NIBBLETYPE a_Meta) const override;
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virtual NIBBLETYPE MetaMirrorXY(NIBBLETYPE a_Meta) const override;
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virtual NIBBLETYPE MetaMirrorYZ(NIBBLETYPE a_Meta) const override;
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virtual bool GetPlacementBlockTypeMeta(
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cChunkInterface & a_ChunkInterface,
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cPlayer & a_Player,
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const Vector3i a_PlacedBlockPos,
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eBlockFace a_ClickedBlockFace,
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const Vector3i a_CursorPos,
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BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
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) const override
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{
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// If clicking a bottom face, place the door one block lower:
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auto PlacedPos = a_PlacedBlockPos;
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if (a_ClickedBlockFace == BLOCK_FACE_BOTTOM)
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{
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PlacedPos.y--;
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}
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if (
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!CanReplaceBlock(a_ChunkInterface.GetBlock(PlacedPos)) ||
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!CanReplaceBlock(a_ChunkInterface.GetBlock(PlacedPos.addedY(1)))
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)
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{
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return false;
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}
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return Super::GetPlacementBlockTypeMeta(a_ChunkInterface, a_Player, PlacedPos, a_ClickedBlockFace, a_CursorPos, a_BlockType, a_BlockMeta);
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}
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virtual cBoundingBox GetPlacementCollisionBox(BLOCKTYPE a_XM, BLOCKTYPE a_XP, BLOCKTYPE a_YM, BLOCKTYPE a_YP, BLOCKTYPE a_ZM, BLOCKTYPE a_ZP) const override;
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virtual cItems ConvertToPickups(NIBBLETYPE a_BlockMeta, cBlockEntity * a_BlockEntity, const cEntity * a_Digger, const cItem * a_Tool) const override
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{
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switch (m_BlockType)
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{
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case E_BLOCK_OAK_DOOR: return cItem(E_ITEM_WOODEN_DOOR);
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case E_BLOCK_ACACIA_DOOR: return cItem(E_ITEM_ACACIA_DOOR);
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case E_BLOCK_BIRCH_DOOR: return cItem(E_ITEM_BIRCH_DOOR);
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case E_BLOCK_DARK_OAK_DOOR: return cItem(E_ITEM_DARK_OAK_DOOR);
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case E_BLOCK_JUNGLE_DOOR: return cItem(E_ITEM_JUNGLE_DOOR);
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case E_BLOCK_SPRUCE_DOOR: return cItem(E_ITEM_SPRUCE_DOOR);
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case E_BLOCK_IRON_DOOR: return cItem(E_ITEM_IRON_DOOR);
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default:
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{
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ASSERT(!"Unhandled door type!");
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return {};
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}
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}
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}
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virtual bool IsUseable(void) const override
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{
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return true;
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}
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virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, const Vector3i a_RelPos, const cChunk & a_Chunk) const override
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{
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return ((a_RelPos.y > 0) && CanBeOn(a_Chunk.GetBlock(a_RelPos.addedY(-1)), a_Chunk.GetMeta(a_RelPos.addedY(-1))));
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}
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/** Returns true iff the door at the specified coords is open.
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The coords may point to either the top part or the bottom part of the door. */
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static NIBBLETYPE IsOpen(cChunkInterface & a_ChunkInterface, const Vector3i a_BlockPos)
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{
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NIBBLETYPE Meta = GetCompleteDoorMeta(a_ChunkInterface, a_BlockPos);
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return ((Meta & 0x04) != 0);
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}
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/** Returns the complete meta composed from the both parts of the door as (TopMeta << 4) | BottomMeta
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The coords may point to either part of the door.
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The returned value has bit 3 (0x08) set iff the coords point to the top part of the door.
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Fails silently for (invalid) doors on the world's top and bottom. */
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static NIBBLETYPE GetCompleteDoorMeta(cChunkInterface & a_ChunkInterface, const Vector3i a_BlockPos)
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{
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NIBBLETYPE Meta = a_ChunkInterface.GetBlockMeta(a_BlockPos);
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if ((Meta & 0x08) != 0)
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{
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// The coords are pointing at the top part of the door
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if (a_BlockPos.y > 0)
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{
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NIBBLETYPE DownMeta = a_ChunkInterface.GetBlockMeta(a_BlockPos.addedY(-1));
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return static_cast<NIBBLETYPE>((DownMeta & 0x07) | 0x08 | (Meta << 4));
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}
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// This is the top part of the door at the bottommost layer of the world, there's no bottom:
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return static_cast<NIBBLETYPE>(0x08 | (Meta << 4));
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}
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else
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{
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// The coords are pointing at the bottom part of the door
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if (a_BlockPos.y < cChunkDef::Height - 1)
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{
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NIBBLETYPE UpMeta = a_ChunkInterface.GetBlockMeta(a_BlockPos.addedY(1));
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return static_cast<NIBBLETYPE>(Meta | (UpMeta << 4));
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}
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// This is the bottom part of the door at the topmost layer of the world, there's no top:
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return Meta;
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}
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}
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/** Changes the door at the specified coords from open to close or vice versa */
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static void ChangeDoor(cChunkInterface & a_ChunkInterface, const Vector3i a_BlockPos)
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{
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SetOpen(a_ChunkInterface, a_BlockPos, !IsOpen(a_ChunkInterface, a_BlockPos));
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}
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virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) const override
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{
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UNUSED(a_Meta);
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switch (m_BlockType)
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{
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case E_BLOCK_OAK_DOOR: return 13;
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case E_BLOCK_SPRUCE_DOOR: return 34;
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case E_BLOCK_BIRCH_DOOR: return 2;
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case E_BLOCK_JUNGLE_DOOR: return 10;
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case E_BLOCK_DARK_OAK_DOOR: return 26;
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case E_BLOCK_ACACIA_DOOR: return 15;
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case E_BLOCK_IRON_DOOR: return 6;
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default:
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{
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ASSERT(!"Unhandled blocktype in door handler!");
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return 0;
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}
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}
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}
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} ;
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