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
|
// WorldStorage.h
// Interfaces to the cWorldStorage class representing the chunk loading / saving thread
// This class decides which storage schema to use for saving; it queries all available schemas for loading
// Also declares the base class for all storage schemas, cWSSchema
// Helper serialization class cJsonChunkSerializer is declared as well
#pragma once
#ifndef WORLDSTORAGE_H_INCLUDED
#define WORLDSTORAGE_H_INCLUDED
#include "../ChunkDef.h"
#include "../OSSupport/IsThread.h"
#include "jsoncpp/include/json/json.h"
// fwd:
class cWorld;
/// Interface that all the world storage schemas need to implement
class cWSSchema abstract
{
public:
cWSSchema(cWorld * a_World) : m_World(a_World) {}
virtual ~cWSSchema() {} // Force the descendants' destructors to be virtual
virtual bool LoadChunk(const cChunkCoords & a_Chunk) = 0;
virtual bool SaveChunk(const cChunkCoords & a_Chunk) = 0;
virtual const AString GetName(void) const = 0;
protected:
cWorld * m_World;
} ;
typedef std::list<cWSSchema *> cWSSchemaList;
/// The actual world storage class
class cWorldStorage :
public cIsThread
{
typedef cIsThread super;
public:
cWorldStorage(void);
~cWorldStorage();
void QueueLoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ, bool a_Generate); // Queues the chunk for loading; if not loaded, the chunk will be generated if a_Generate is true
void QueueSaveChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
/// Signals that a message should be output to the console when all the chunks have been saved
void QueueSavedMessage(void);
/// Loads the chunk specified; returns true on success, false on failure
bool LoadChunk(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
void UnqueueLoad(int a_ChunkX, int a_ChunkY, int a_ChunkZ);
void UnqueueSave(const cChunkCoords & a_Chunk);
bool Start(cWorld * a_World, const AString & a_StorageSchemaName); // Hide the cIsThread's Start() method, we need to provide args
void Stop(void); // Hide the cIsThread's Stop() method, we need to signal the event
void WaitForFinish(void);
void WaitForQueuesEmpty(void);
int GetLoadQueueLength(void);
int GetSaveQueueLength(void);
protected:
struct sChunkLoad
{
int m_ChunkX;
int m_ChunkY;
int m_ChunkZ;
bool m_Generate; // If true, the chunk will be generated if it cannot be loaded
sChunkLoad(int a_ChunkX, int a_ChunkY, int a_ChunkZ, bool a_Generate) : m_ChunkX(a_ChunkX), m_ChunkY(a_ChunkY), m_ChunkZ(a_ChunkZ), m_Generate(a_Generate) {}
} ;
typedef std::list<sChunkLoad> sChunkLoadQueue;
cWorld * m_World;
AString m_StorageSchemaName;
// Both queues are locked by the same CS
cCriticalSection m_CSQueues;
sChunkLoadQueue m_LoadQueue;
cChunkCoordsList m_SaveQueue;
cEvent m_Event; // Set when there's any addition to the queues
cEvent m_evtRemoved; // Set when an item has been removed from the queue, either by the worker thread or the Unqueue methods
/// All the storage schemas (all used for loading)
cWSSchemaList m_Schemas;
/// The one storage schema used for saving
cWSSchema * m_SaveSchema;
void InitSchemas(void);
virtual void Execute(void) override;
/// Loads one chunk from the queue (if any queued); returns true if there are more chunks in the load queue
bool LoadOneChunk(void);
/// Saves one chunk from the queue (if any queued); returns true if there are more chunks in the save queue
bool SaveOneChunk(void);
} ;
#endif // WORLDSTORAGE_H_INCLUDED
|
