230 lines
10 KiB
C++
230 lines
10 KiB
C++
|
|
#pragma once
|
|
|
|
#include "../Defines.h"
|
|
|
|
#include "../BoundingBox.h"
|
|
|
|
|
|
|
|
|
|
|
|
// fwd:
|
|
class cPlayer;
|
|
class cChunk;
|
|
class cBlockPluginInterface;
|
|
class cChunkInterface;
|
|
class cWorldInterface;
|
|
class cItems;
|
|
class BlockTypeRegistry;
|
|
|
|
|
|
|
|
|
|
|
|
class cBlockHandler
|
|
{
|
|
public:
|
|
cBlockHandler(BLOCKTYPE a_BlockType);
|
|
|
|
virtual ~cBlockHandler() {}
|
|
|
|
/** Called when the block gets ticked either by a random tick or by a queued tick.
|
|
Note that the coords are chunk-relative! */
|
|
virtual void OnUpdate(cChunkInterface & cChunkInterface, cWorldInterface & a_WorldInterface, cBlockPluginInterface & a_BlockPluginInterface, cChunk & a_Chunk, int a_RelX, int a_RelY, int a_RelZ);
|
|
|
|
/** Returns the relative bounding box that must be entity-free in
|
|
order for the block to be placed. a_XM, a_XP, etc. stand for the
|
|
blocktype of the minus-X neighbor, the positive-X neighbor, etc. */
|
|
virtual cBoundingBox GetPlacementCollisionBox(BLOCKTYPE a_XM, BLOCKTYPE a_XP, BLOCKTYPE a_YM, BLOCKTYPE a_YP, BLOCKTYPE a_ZM, BLOCKTYPE a_ZP);
|
|
|
|
/** Called before a block is placed into a world.
|
|
The handler should return true to allow placement, false to refuse.
|
|
Also, the handler should set a_BlockType and a_BlockMeta to correct values for the newly placed block.
|
|
Called by cItemHandler::GetPlacementBlockTypeMeta() if the item is a block */
|
|
virtual bool GetPlacementBlockTypeMeta(
|
|
cChunkInterface & a_ChunkInterface, cPlayer & a_Player,
|
|
int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace,
|
|
int a_CursorX, int a_CursorY, int a_CursorZ,
|
|
BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta
|
|
);
|
|
|
|
/** Called by cWorld::SetBlock() after the block has been set */
|
|
virtual void OnPlaced(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, Vector3i a_BlockPos, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta);
|
|
|
|
/** Called by cPlayer::PlaceBlocks() for each block after it has been set to the world. Called after OnPlaced(). */
|
|
virtual void OnPlacedByPlayer(
|
|
cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer & a_Player, const sSetBlock & a_BlockChange
|
|
);
|
|
|
|
/** Called just before the player breaks the block.
|
|
The block is still valid in the world.
|
|
By default does nothing special; descendants may provide further behavior. */
|
|
virtual void OnPlayerBreakingBlock(
|
|
cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface,
|
|
cPlayer & a_Player,
|
|
Vector3i a_BlockPos
|
|
) {}
|
|
|
|
/** Called just after the player breaks the block.
|
|
The block is already dug up in the world, the original block type and meta is passed in a_OldBlockType and a_OldBlockMeta.
|
|
By default does nothing special, descendants may provide further behavior. */
|
|
virtual void OnPlayerBrokeBlock(
|
|
cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface,
|
|
cPlayer & a_Player,
|
|
Vector3i a_BlockPos,
|
|
BLOCKTYPE a_OldBlockType, NIBBLETYPE a_OldBlockMeta
|
|
) {}
|
|
|
|
/** Called before a block gets broken (replaced with air), either by player or by natural means.
|
|
If by player, it is called after the OnPlayerBreakingBlock() callback.
|
|
By default does nothing. */
|
|
virtual void OnBreaking(
|
|
cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface,
|
|
Vector3i a_BlockPos
|
|
) {}
|
|
|
|
/** Called after a block gets broken (replaced with air), either by player or by natural means.
|
|
If by player, it is called before the OnPlayerBrokeBlock() callback.
|
|
The block is already dug up in the world, the original block type and meta is passed in a_OldBlockType and a_OldBlockMeta.
|
|
By default notifies all direct neighbors via their OnNeighborChanged() callbacks. */
|
|
virtual void OnBroken(
|
|
cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface,
|
|
Vector3i a_BlockPos,
|
|
BLOCKTYPE a_OldBlockType, NIBBLETYPE a_OldBlockMeta
|
|
);
|
|
|
|
/** Called when a direct neighbor of this block has been changed.
|
|
The position is the block's own position, NOT the changed neighbor's position.
|
|
a_WhichNeighbor indicates which neighbor has changed. For example, BLOCK_FACE_YP meant the neighbor above has changed.
|
|
BLOCK_FACE_NONE means that it is a neighbor not directly adjacent (diagonal, etc.) */
|
|
virtual void OnNeighborChanged(cChunkInterface & a_ChunkInterface, Vector3i a_BlockPos, eBlockFace a_WhichNeighbor) {}
|
|
|
|
/** Notifies the specified neighbor that the current block has changed.
|
|
a_NeighborPos are the coords of the neighbor to be notified
|
|
a_WhichNeighbor specifies which neighbor (relative to a_NeighborPos) has changed.
|
|
For example BLOCK_FACE_YP means that the block at {a_NeighborX, a_NeighborY + 1, a_NeighborZ} has changed.
|
|
BLOCK_FACE_NONE means that it is a neighbor not directly adjacent (diagonal, etc.) */
|
|
static void NeighborChanged(cChunkInterface & a_ChunkInterface, Vector3i a_NeighborPos, eBlockFace a_WhichNeighbor);
|
|
|
|
/** Called when the player starts digging the block. */
|
|
virtual void OnDigging(cChunkInterface & cChunkInterface, cWorldInterface & a_WorldInterface, cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ) {}
|
|
|
|
/** Called if the user right clicks the block and the block is useable
|
|
returns true if the use was successful, return false to use the block as a "normal" block */
|
|
virtual bool 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) { return false; }
|
|
|
|
/** Called when a right click to this block is cancelled.
|
|
It forces the server to send the real state of a block to the client to prevent client assuming the operation is successfull */
|
|
virtual void OnCancelRightClick(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace) {}
|
|
|
|
/** Returns the pickups that would result if the block was mined by a_Digger using a_Tool.
|
|
Doesn't do any actual block change / mining, only calculates the pickups.
|
|
a_BlockEntity is the block entity present at the block, if any, nullptr if none.
|
|
a_Digger is the entity that caused the conversion, usually the player digging.
|
|
a_Tool is the tool used for the digging.
|
|
The default implementation drops a single item created from m_BlockType and the current meta. */
|
|
virtual cItems ConvertToPickups(
|
|
NIBBLETYPE a_BlockMeta,
|
|
cBlockEntity * a_BlockEntity,
|
|
const cEntity * a_Digger = nullptr,
|
|
const cItem * a_Tool = nullptr
|
|
);
|
|
|
|
/** Checks if the block can stay at the specified relative coords in the chunk */
|
|
virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk);
|
|
|
|
/** Checks whether the block has an effect on growing the plant */
|
|
virtual bool CanSustainPlant(BLOCKTYPE a_Plant) { return false; }
|
|
|
|
/** Checks if the block can be placed at this point.
|
|
Default: CanBeAt(...)
|
|
NOTE: This call doesn't actually place the block
|
|
*/
|
|
// virtual bool CanBePlacedAt(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ, char a_Dir);
|
|
|
|
/** Called to check whether this block supports a rclk action.
|
|
If it returns true, OnUse() is called */
|
|
virtual bool IsUseable(void);
|
|
|
|
/** Indicates whether the client will click through this block.
|
|
For example digging a fire will hit the block below the fire so fire is clicked through
|
|
*/
|
|
virtual bool IsClickedThrough(void);
|
|
|
|
/** Checks if the player can build "inside" this block.
|
|
For example blocks placed "on" snow will be placed at the same position. So: Snow ignores Build collision
|
|
@param a_Pos Position of the block
|
|
@param a_Player Player trying to build on the block
|
|
@param a_Meta Meta value of the block currently at a_Pos
|
|
*/
|
|
virtual bool DoesIgnoreBuildCollision(cChunkInterface & ChunkInterface, Vector3i a_Pos, cPlayer & a_Player, NIBBLETYPE a_Meta);
|
|
|
|
/** Returns if this block drops if it gets destroyed by an unsuitable situation.
|
|
Default: true */
|
|
virtual bool DoesDropOnUnsuitable(void);
|
|
|
|
/** Tests if a_Position is inside the block where a_Position is relative to the origin of the block
|
|
Note that this is considered from a "top-down" perspective i.e. empty spaces on the bottom of a block don't matter */
|
|
virtual bool IsInsideBlock(Vector3d a_Position, const BLOCKTYPE a_BlockType, const NIBBLETYPE a_BlockMeta);
|
|
|
|
/** Called when one of the neighbors gets set; equivalent to MC block update.
|
|
By default drops (DropBlockAsPickup() / SetBlock()) if the position is no longer suitable (CanBeAt(), DoesDropOnUnsuitable()),
|
|
otherwise wakes up all simulators on the block. */
|
|
virtual void Check(
|
|
cChunkInterface & ChunkInterface, cBlockPluginInterface & a_PluginInterface,
|
|
Vector3i a_RelPos,
|
|
cChunk & a_Chunk
|
|
);
|
|
|
|
/** Returns the base colour ID of the block, as will be represented on a map, as per documentation: https://minecraft.gamepedia.com/Map_item_format */
|
|
virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta);
|
|
|
|
/** Rotates a given block meta counter-clockwise. Default: no change
|
|
Returns block meta following rotation */
|
|
virtual NIBBLETYPE MetaRotateCCW(NIBBLETYPE a_Meta) { return a_Meta; }
|
|
|
|
/** Rotates a given block meta clockwise. Default: no change
|
|
Returns block meta following rotation */
|
|
virtual NIBBLETYPE MetaRotateCW(NIBBLETYPE a_Meta) { return a_Meta; }
|
|
|
|
/** Mirrors a given block meta around the XY plane. Default: no change
|
|
Returns block meta following rotation */
|
|
virtual NIBBLETYPE MetaMirrorXY(NIBBLETYPE a_Meta) { return a_Meta; }
|
|
|
|
/** Mirros a given block meta around the XZ plane. Default: no change
|
|
Returns block meta following rotation */
|
|
virtual NIBBLETYPE MetaMirrorXZ(NIBBLETYPE a_Meta) { return a_Meta; }
|
|
|
|
/** Mirros a given block meta around the YZ plane. Default: no change
|
|
Returns block meta following rotation */
|
|
virtual NIBBLETYPE MetaMirrorYZ(NIBBLETYPE a_Meta) { return a_Meta; }
|
|
|
|
/** Grows this block, if it supports growing, by the specified amount of stages (at most).
|
|
Returns the number of stages actually grown, zero if not supported (default). */
|
|
virtual int Grow(cChunk & a_Chunk, Vector3i a_RelPos, int a_NumStages = 1) { return 0; }
|
|
|
|
/** Returns true if the specified tool is valid and has a non-zero silk-touch enchantment.
|
|
Helper used in many ConvertToPickups() implementations. */
|
|
static bool ToolHasSilkTouch(const cItem * a_Tool);
|
|
|
|
|
|
protected:
|
|
BLOCKTYPE m_BlockType;
|
|
|
|
// Creates a new blockhandler for the given block type. For internal use only, use ::GetBlockHandler() instead.
|
|
static cBlockHandler * CreateBlockHandler(BLOCKTYPE a_BlockType);
|
|
|
|
friend class cBlockInfo;
|
|
};
|
|
|
|
|
|
|
|
|
|
namespace Temporary
|
|
{
|
|
/** Registers all the BlockHandler descendants in the specified registry.
|
|
Temporary, since this will later be performed in a plugin that provides the vanilla blocks. */
|
|
void RegisterAllBlockHandlers(BlockTypeRegistry & aRegistry);
|
|
};
|