222 lines
6.4 KiB
C++
222 lines
6.4 KiB
C++
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#pragma once
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#include "BlockHandler.h"
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#include "../Entities/Player.h"
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#include "Chunk.h"
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#include "MetaRotator.h"
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#include "ChunkInterface.h"
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class cBlockDoorHandler :
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public cMetaRotator<cBlockHandler, 0x03, 0x01, 0x02, 0x03, 0x00, true>
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{
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typedef cMetaRotator<cBlockHandler, 0x03, 0x01, 0x02, 0x03, 0x00, true> super;
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public:
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cBlockDoorHandler(BLOCKTYPE a_BlockType);
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virtual void OnDestroyed(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, int a_BlockX, int a_BlockY, int a_BlockZ) override;
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virtual void OnUse(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ) override;
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virtual void OnCancelRightClick(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace) override;
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virtual NIBBLETYPE MetaRotateCCW(NIBBLETYPE a_Meta) override;
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virtual NIBBLETYPE MetaRotateCW(NIBBLETYPE a_Meta) override;
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virtual NIBBLETYPE MetaMirrorXY(NIBBLETYPE a_Meta) override;
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virtual NIBBLETYPE MetaMirrorYZ(NIBBLETYPE a_Meta) override;
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virtual bool GetPlacementBlockTypeMeta(
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cChunkInterface & a_ChunkInterface, cPlayer * a_Player,
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int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace,
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int a_CursorX, int a_CursorY, int a_CursorZ,
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BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
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) override
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{
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// If clicking a bottom face, place the door one block lower:
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if (a_BlockFace == BLOCK_FACE_BOTTOM)
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{
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a_BlockY--;
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}
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if (
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!CanReplaceBlock(a_ChunkInterface.GetBlock(a_BlockX, a_BlockY, a_BlockZ)) ||
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!CanReplaceBlock(a_ChunkInterface.GetBlock(a_BlockX, a_BlockY + 1, a_BlockZ))
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)
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{
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return false;
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}
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a_BlockType = m_BlockType;
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a_BlockMeta = PlayerYawToMetaData(a_Player->GetYaw());
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return true;
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}
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virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
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{
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a_Pickups.push_back(cItem((m_BlockType == E_BLOCK_WOODEN_DOOR) ? E_ITEM_WOODEN_DOOR : E_ITEM_IRON_DOOR, 1, 0));
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}
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virtual void OnPlacedByPlayer(
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cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer * a_Player,
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int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace,
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int a_CursorX, int a_CursorY, int a_CursorZ,
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BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta
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) override;
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virtual bool IsUseable(void) 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, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
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{
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return ((a_RelY > 0) && (a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ) != E_BLOCK_AIR));
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}
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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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/** Converts the player's yaw to placed door's blockmeta */
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inline static NIBBLETYPE PlayerYawToMetaData(double a_Yaw)
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{
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ASSERT((a_Yaw >= -180) && (a_Yaw < 180));
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a_Yaw += 90 + 45;
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if (a_Yaw > 360)
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{
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a_Yaw -= 360;
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}
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if ((a_Yaw >= 0) && (a_Yaw < 90))
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{
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return 0x00;
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}
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else if ((a_Yaw >= 180) && (a_Yaw < 270))
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{
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return 0x02;
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}
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else if ((a_Yaw >= 90) && (a_Yaw < 180))
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{
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return 0x01;
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}
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else
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{
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return 0x03;
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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 IsDoor(BLOCKTYPE a_Block)
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{
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return (a_Block == E_BLOCK_WOODEN_DOOR) || (a_Block == E_BLOCK_IRON_DOOR);
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}
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static NIBBLETYPE IsOpen(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ)
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{
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NIBBLETYPE Meta = GetCompleteDoorMeta(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ);
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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 gracefully for (invalid) doors on the world's top and bottom. */
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static NIBBLETYPE GetCompleteDoorMeta(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ)
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{
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NIBBLETYPE Meta = a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY, a_BlockZ);
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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_BlockX > 0)
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{
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NIBBLETYPE DownMeta = a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY - 1, a_BlockZ);
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return (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 (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_BlockY < cChunkDef::Height - 1)
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{
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NIBBLETYPE UpMeta = a_ChunkInterface.GetBlockMeta(a_BlockX, a_BlockY + 1, a_BlockZ);
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return (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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/** 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, int a_BlockX, int a_BlockY, int a_BlockZ, bool a_Open)
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{
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BLOCKTYPE Block = a_ChunkInterface.GetBlock(a_BlockX, a_BlockY, a_BlockZ);
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if (!IsDoor(Block))
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{
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return;
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}
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NIBBLETYPE Meta = GetCompleteDoorMeta(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ);
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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_BlockX, a_BlockY, a_BlockZ, 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_BlockY > 0)
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{
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a_ChunkInterface.SetBlockMeta(a_BlockX, a_BlockY - 1, a_BlockZ, NewMeta);
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}
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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, int a_BlockX, int a_BlockY, int a_BlockZ)
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{
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SetOpen(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ, !IsOpen(a_ChunkInterface, a_BlockX, a_BlockY, a_BlockZ));
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}
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} ;
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