1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
#pragma once
#include "../Defines.h"
#include "../Item.h"
#include "../Chunk.h"
// fwd:
class cWorld;
class cPlayer;
class cBlockHandler
{
public:
cBlockHandler(BLOCKTYPE a_BlockType);
/// Called when the block gets ticked either by a random tick or by a queued tick
virtual void OnUpdate(cWorld *a_World, int a_BlockX, int a_BlockY, int a_BlockZ);
/** 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(
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
);
/// Called by cWorld::SetBlock() after the block has been set
virtual void OnPlaced(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta);
/// Called by cClientHandle::HandlePlaceBlock() after the player has placed a new block. Called after OnPlaced().
virtual void OnPlacedByPlayer(
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
);
/// Called before the player has destroyed a block
virtual void OnDestroyedByPlayer(cWorld * a_World, cPlayer * a_Player, int a_BlockX, int a_BlockY, int a_BlockZ);
/// Called before a block gets destroyed / replaced with air
virtual void OnDestroyed(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ);
/// Called when a direct neighbor of this block has been changed (The position is the own position, not the neighbor position)
virtual void OnNeighborChanged(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ);
/// Notifies all neighbors of the given block about a change
static void NeighborChanged(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ);
/// Called while the player diggs the block.
virtual void OnDigging(cWorld * a_World, 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
virtual void OnUse(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);
/// Called when the item is mined to convert it into pickups. Pickups may specify multiple items.
virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta);
/// Handles the dropping of a block based on what ConvertToDrops() returns. This will not destroy the block. a_Digger is the entity causing the drop; it may be NULL
virtual void DropBlock(cWorld * a_World, cEntity * a_Digger, int a_BlockX, int a_BlockY, int a_BlockZ);
/// Returns step sound name of block
virtual const char * GetStepSound(void);
/// Checks if the block can stay at the specified relative coords in the chunk
virtual bool CanBeAt(int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk);
/** 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
*/
virtual bool DoesIgnoreBuildCollision(void);
/// Indicates this block can be placed on the side of other blocks. Default: true
virtual bool CanBePlacedOnSide(void);
/// Does this block drop if it gets destroyed by an unsuitable situation? Default: true
virtual bool DoesDropOnUnsuitable(void);
/** Called when one of the neighbors gets set; equivalent to MC block update.
By default drops if position no more suitable (CanBeAt(), DoesDropOnUnsuitable(), Drop()),
and wakes up all simulators on the block.
*/
virtual void Check(int a_RelX, int a_RelY, int a_RelZ, cChunk & a_Chunk);
/// Returns the meta for a block after rotating it counter-clockwise from the specified meta. Default: no change
virtual NIBBLETYPE MetaRotateCCW(NIBBLETYPE a_Meta) { return a_Meta; }
/// Returns the meta for a block after rotating it clockwise from the specified meta. Default: no change
virtual NIBBLETYPE MetaRotateCW(NIBBLETYPE a_Meta) { return a_Meta; }
/// Returns the meta for a block after mirroring it around the XY plane. Default: no change
virtual NIBBLETYPE MetaMirrorXY(NIBBLETYPE a_Meta) { return a_Meta; }
/// Returns the meta for a block after mirroring it around the XZ plane. Default: no change
virtual NIBBLETYPE MetaMirrorXZ(NIBBLETYPE a_Meta) { return a_Meta; }
/// Returns the meta for a block after mirroring it around the YZ plane. Default: no change
virtual NIBBLETYPE MetaMirrorYZ(NIBBLETYPE a_Meta) { return a_Meta; }
/// Get the blockhandler for a specific block id
static cBlockHandler * GetBlockHandler(BLOCKTYPE a_BlockType);
/// Deletes all initialised block handlers
static void Deinit();
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);
static cBlockHandler *m_BlockHandler[256];
static bool m_HandlerInitialized; //used to detect if the blockhandlers are initialized
};
// Shortcut to get the blockhandler for a specific block
inline cBlockHandler * BlockHandler(BLOCKTYPE a_BlockType)
{
return cBlockHandler::GetBlockHandler(a_BlockType);
}
|
