summaryrefslogblamecommitdiffstats
path: root/source/cBlockArea.cpp
blob: 810503f04baab38dfa3130d4f8e06469667871cc (plain) (tree)
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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626






                                                                                                                                                       
                        









































































































































































































































































































































































































































































































































































































































                                                                                                                                                               

// BlockArea.cpp

// Implements the cBlockArea object representing an area of block data that can be queried from cWorld and then accessed again without further queries
// The object also supports writing the blockdata back into cWorld, even into other coords

#include "Globals.h"
#include "cBlockArea.h"
#include "cWorld.h"





cBlockArea::cBlockArea(void) :
	m_SizeX(0),
	m_SizeY(0),
	m_SizeZ(0),
	m_BlockTypes(NULL),
	m_BlockMetas(NULL),
	m_BlockLight(NULL),
	m_BlockSkyLight(NULL)
{
}





cBlockArea::~cBlockArea()
{
	Clear();
}





void cBlockArea::Clear(void)
{
	delete[] m_BlockTypes;    m_BlockTypes = NULL;
	delete[] m_BlockMetas;    m_BlockMetas = NULL;
	delete[] m_BlockLight;    m_BlockLight = NULL;
	delete[] m_BlockSkyLight; m_BlockSkyLight = NULL;
	m_SizeX = 0;
	m_SizeY = 0;
	m_SizeZ = 0;
}




bool cBlockArea::Read(cWorld * a_World, int a_MinBlockX, int a_MaxBlockX, int a_MinBlockY, int a_MaxBlockY, int a_MinBlockZ, int a_MaxBlockZ, int a_DataTypes)
{
	// Normalize the coords:
	if (a_MinBlockX > a_MaxBlockX)
	{
		std::swap(a_MinBlockX, a_MaxBlockX);
	}
	if (a_MinBlockY > a_MaxBlockY)
	{
		std::swap(a_MinBlockY, a_MaxBlockY);
	}
	if (a_MinBlockZ > a_MaxBlockZ)
	{
		std::swap(a_MinBlockZ, a_MaxBlockZ);
	}
	
	// Check coords validity:
	if (a_MinBlockY < 0)
	{
		LOGWARNING("cBlockArea:Read(): MinBlockY less than zero, adjusting to zero");
		a_MinBlockY = 0;
	}
	else if (a_MinBlockY >= cChunkDef::Height)
	{
		LOGWARNING("cBlockArea::Read(): MinBlockY more than chunk height, adjusting to chunk height");
		a_MinBlockY = cChunkDef::Height - 1;
	}
	if (a_MaxBlockY < 0)
	{
		LOGWARNING("cBlockArea:Read(): MaxBlockY less than zero, adjusting to zero");
		a_MaxBlockY = 0;
	}
	else if (a_MinBlockY >= cChunkDef::Height)
	{
		LOGWARNING("cBlockArea::Read(): MaxBlockY more than chunk height, adjusting to chunk height");
		a_MaxBlockY = cChunkDef::Height - 1;
	}
	
	// Allocate the needed memory:
	Clear();
	if (!SetSize(a_MaxBlockX - a_MinBlockX, a_MaxBlockY - a_MinBlockY, a_MaxBlockZ - a_MinBlockZ, a_DataTypes))
	{
		return false;
	}
	m_OriginX = a_MinBlockX;
	m_OriginY = a_MinBlockY;
	m_OriginZ = a_MinBlockZ;
	cChunkReader Reader(*this);
	
	// Convert block coords to chunks coords:
	int MinChunkX, MaxChunkX;
	int MinChunkZ, MaxChunkZ;
	cChunkDef::AbsoluteToRelative(a_MinBlockX, a_MinBlockY, a_MinBlockZ, MinChunkX, MinChunkZ);
	cChunkDef::AbsoluteToRelative(a_MaxBlockX, a_MaxBlockY, a_MaxBlockZ, MaxChunkX, MaxChunkZ);
	
	// Query block data:
	if (!a_World->ForEachChunkInRect(MinChunkX, MaxChunkX, MinChunkZ, MaxChunkZ, Reader))
	{
		Clear();
		return false;
	}
	return true;
}





bool cBlockArea::Write(cWorld * a_World, int a_MinBlockX, int a_MinBlockY, int a_MinBlockZ, int a_DataTypes)
{
	// TODO
	ASSERT(!"Not implemented yet");
	return false;
}






void cBlockArea::SetRelBlockType(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType)
{
	if (m_BlockTypes == NULL)
	{
		LOGWARNING("cBlockArea: BlockTypes have not been read!");
		return;
	}
	m_BlockTypes[MakeIndex(a_RelX, a_RelY, a_RelZ)] = a_BlockType;
}





void cBlockArea::SetBlockType(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType)
{
	SetRelBlockType(a_BlockX - m_OriginX, a_BlockY - m_OriginY, a_BlockZ - m_OriginZ, a_BlockType);
}





void cBlockArea::SetRelBlockMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_BlockMeta)
{
	SetRelNibble(a_RelX, a_RelY, a_RelZ, a_BlockMeta, m_BlockMetas);
}





void cBlockArea::SetBlockMeta(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE a_BlockMeta)
{
	SetNibble(a_BlockX, a_BlockY, a_BlockZ, a_BlockMeta, m_BlockMetas);
}





void cBlockArea::SetRelBlockLight(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_BlockLight)
{
	SetRelNibble(a_RelX, a_RelY, a_RelZ, a_BlockLight, m_BlockLight);
}





void cBlockArea::SetBlockLight(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE a_BlockLight)
{
	SetNibble(a_BlockX, a_BlockY, a_BlockZ, a_BlockLight, m_BlockLight);
}





void cBlockArea::SetRelBlockSkyLight(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_BlockSkyLight)
{
	SetRelNibble(a_RelX, a_RelY, a_RelZ, a_BlockSkyLight, m_BlockSkyLight);
}





void cBlockArea::SetBlockSkyLight(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE a_BlockSkyLight)
{
	SetNibble(a_BlockX, a_BlockY, a_BlockZ, a_BlockSkyLight, m_BlockSkyLight);
}





BLOCKTYPE cBlockArea::GetRelBlockType(int a_RelX,   int a_RelY,   int a_RelZ)
{
	if (m_BlockTypes == NULL)
	{
		LOGWARNING("cBlockArea: BlockTypes have not been read!");
		return E_BLOCK_AIR;
	}
	return m_BlockTypes[MakeIndex(a_RelX, a_RelY, a_RelZ)];
}





BLOCKTYPE cBlockArea::GetBlockType(int a_BlockX, int a_BlockY, int a_BlockZ)
{
	return GetRelBlockType(a_BlockX - m_OriginX, a_BlockY - m_OriginY, a_BlockZ - m_OriginZ);
}





NIBBLETYPE cBlockArea::GetRelBlockMeta(int a_RelX, int a_RelY, int a_RelZ)
{
	return GetRelNibble(a_RelX, a_RelY, a_RelZ, m_BlockMetas);
}





NIBBLETYPE cBlockArea::GetBlockMeta(int a_BlockX, int a_BlockY, int a_BlockZ)
{
	return GetNibble(a_BlockX, a_BlockY, a_BlockZ, m_BlockMetas);
}





NIBBLETYPE cBlockArea::GetRelBlockLight(int a_RelX, int a_RelY, int a_RelZ)
{
	return GetRelNibble(a_RelX, a_RelY, a_RelZ, m_BlockLight);
}





NIBBLETYPE cBlockArea::GetBlockLight(int a_BlockX, int a_BlockY, int a_BlockZ)
{
	return GetNibble(a_BlockX, a_BlockY, a_BlockZ, m_BlockLight);
}





NIBBLETYPE cBlockArea::GetRelBlockSkyLight(int a_RelX, int a_RelY, int a_RelZ)
{
	return GetRelNibble(a_RelX, a_RelY, a_RelZ, m_BlockSkyLight);
}





NIBBLETYPE cBlockArea::GetBlockSkyLight(int a_BlockX, int a_BlockY, int a_BlockZ)
{
	return GetNibble(a_BlockX, a_BlockY, a_BlockZ, m_BlockSkyLight);
}





int cBlockArea::GetDataTypes(void) const
{
	int res = 0;
	if (m_BlockTypes != NULL)
	{
		res |= baTypes;
	}
	if (m_BlockMetas != NULL)
	{
		res |= baMetas;
	}
	if (m_BlockLight != NULL)
	{
		res |= baLight;
	}
	if (m_BlockSkyLight != NULL)
	{
		res |= baSkyLight;
	}
	return res;
}





bool cBlockArea::SetSize(int a_SizeX, int a_SizeY, int a_SizeZ, int a_DataTypes)
{
	ASSERT(m_BlockTypes == NULL);  // Has been cleared
	
	if (a_DataTypes & baTypes)
	{
		m_BlockTypes = new BLOCKTYPE[a_SizeX * a_SizeY * a_SizeZ];
		if (m_BlockTypes == NULL)
		{
			return false;
		}
	}
	if (a_DataTypes & baMetas)
	{
		m_BlockMetas = new NIBBLETYPE[a_SizeX * a_SizeY * a_SizeZ];
		if (m_BlockMetas == NULL)
		{
			delete[] m_BlockTypes;
			return false;
		}
	}
	if (a_DataTypes & baLight)
	{
		m_BlockLight = new NIBBLETYPE[a_SizeX * a_SizeY * a_SizeZ];
		if (m_BlockLight == NULL)
		{
			delete[] m_BlockMetas;
			delete[] m_BlockTypes;
			return false;
		}
	}
	if (a_DataTypes & baSkyLight)
	{
		m_BlockSkyLight = new NIBBLETYPE[a_SizeX * a_SizeY * a_SizeZ];
		if (m_BlockSkyLight == NULL)
		{
			delete[] m_BlockLight;
			delete[] m_BlockMetas;
			delete[] m_BlockTypes;
			return false;
		}
	}
	m_SizeX = a_SizeX;
	m_SizeY = a_SizeY;
	m_SizeZ = a_SizeZ;
	return true;
}





int cBlockArea::MakeIndex(int a_RelX, int a_RelY, int a_RelZ)
{
	return a_RelX + a_RelZ * m_SizeZ + a_RelY * m_SizeX * m_SizeZ;
}





void cBlockArea::SetRelNibble(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_Value, NIBBLETYPE * a_Array)
{
	if (a_Array == NULL)
	{
		LOGWARNING("cBlockArea: datatype has not been read!");
		return;
	}
	a_Array[MakeIndex(a_RelX, a_RelY, a_RelZ)] = a_Value;
}





void cBlockArea::SetNibble(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE a_Value, NIBBLETYPE * a_Array)
{
	SetRelNibble(a_BlockX - m_OriginX, a_BlockY - m_OriginY, a_BlockZ - m_OriginZ, a_Value, a_Array);
}





NIBBLETYPE cBlockArea::GetRelNibble(int a_RelX,   int a_RelY,   int a_RelZ,   NIBBLETYPE * a_Array)
{
	if (a_Array == NULL)
	{
		LOGWARNING("cBlockArea: datatype has not been read!");
		return 16;
	}
	return a_Array[MakeIndex(a_RelX, a_RelY, a_RelZ)];
}





NIBBLETYPE cBlockArea::GetNibble(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE * a_Array)
{
	return GetRelNibble(a_BlockX - m_OriginX, a_BlockY - m_OriginY, a_BlockZ - m_OriginZ, a_Array);
}






///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// cBlockArea::cChunkReader:

cBlockArea::cChunkReader::cChunkReader(cBlockArea & a_Area) :
	m_Area(a_Area),
	m_OriginX(a_Area.m_OriginX),
	m_OriginY(a_Area.m_OriginY),
	m_OriginZ(a_Area.m_OriginZ)
{
}





void cBlockArea::cChunkReader::CopyNibbles(NIBBLETYPE * a_AreaDst, const NIBBLETYPE * a_ChunkSrc)
{
	int SizeY = m_Area.m_SizeY;
	int MinY = m_OriginY;
	
	// SizeX, SizeZ are the dmensions of the block data to copy from the current chunk (size of the geometric union)
	// OffX, OffZ are the offsets of the current chunk data from the area origin
	// BaseX, BaseZ are the offsets of the area data within the current chunk from the chunk borders
	int SizeX = cChunkDef::Width;
	int SizeZ = cChunkDef::Width;
	int OffX, OffZ;
	int BaseX, BaseZ;
	OffX = m_CurrentChunkX * cChunkDef::Width - m_OriginX;
	if (OffX < 0)
	{
		BaseX = -OffX;
		SizeX += OffX;  // SizeX is decreased, OffX is negative
		OffX = 0;
	}
	else
	{
		BaseX = 0;
	}
	OffZ = m_CurrentChunkZ * cChunkDef::Width - m_OriginZ;
	if (OffZ < 0)
	{
		BaseZ = -OffZ;
		SizeZ += OffZ;  // SizeZ is decreased, OffZ is negative
		OffZ = 0;
	}
	else
	{
		BaseZ = 0;
	}
	// If the chunk extends beyond the area in the X or Z axis, cut off the Size:
	if ((m_CurrentChunkX + 1) * cChunkDef::Width > m_OriginX + m_Area.m_SizeX)
	{
		SizeX -= (m_CurrentChunkX + 1) * cChunkDef::Width - (m_OriginX + m_Area.m_SizeX);
	}
	if ((m_CurrentChunkZ + 1) * cChunkDef::Width > m_OriginZ + m_Area.m_SizeZ)
	{
		SizeZ -= (m_CurrentChunkZ + 1) * cChunkDef::Width - (m_OriginZ + m_Area.m_SizeZ);
	}

	for (int y = 0; y < SizeY; y++)
	{
		int ChunkY = MinY + y;
		int AreaY = y;
		for (int z = 0; z < SizeZ; z++)
		{
			int ChunkZ = BaseZ + z;
			int AreaZ = OffZ + z;
			for (int x = 0; x < SizeX; x++)
			{
				int ChunkX = BaseX + x;
				int AreaX = OffX + x;
				a_AreaDst[m_Area.MakeIndex(AreaX, AreaY, AreaZ)] = cChunkDef::GetNibble(a_ChunkSrc, ChunkX, ChunkY, ChunkZ);
			}  // for x
		}  // for z
	}  // for y
}





bool cBlockArea::cChunkReader::Coords(int a_ChunkX, int a_ChunkZ)
{
	m_CurrentChunkX = a_ChunkX;
	m_CurrentChunkZ = a_ChunkZ;
	return true;
}





void cBlockArea::cChunkReader::BlockTypes(const BLOCKTYPE * a_BlockTypes)
{
	if (m_Area.m_BlockTypes == NULL)
	{
		// Don't want BlockTypes
		return;
	}
	
	int SizeY = m_Area.m_SizeY;
	int MinY = m_OriginY;
	
	// SizeX, SizeZ are the dmensions of the block data to copy from the current chunk (size of the geometric union)
	// OffX, OffZ are the offsets of the current chunk data from the area origin
	// BaseX, BaseZ are the offsets of the area data within the current chunk from the chunk borders
	int SizeX = cChunkDef::Width;
	int SizeZ = cChunkDef::Width;
	int OffX, OffZ;
	int BaseX, BaseZ;
	OffX = m_CurrentChunkX * cChunkDef::Width - m_OriginX;
	if (OffX < 0)
	{
		BaseX = -OffX;
		SizeX += OffX;  // SizeX is decreased, OffX is negative
		OffX = 0;
	}
	else
	{
		BaseX = 0;
	}
	OffZ = m_CurrentChunkZ * cChunkDef::Width - m_OriginZ;
	if (OffZ < 0)
	{
		BaseZ = -OffZ;
		SizeZ += OffZ;  // SizeZ is decreased, OffZ is negative
		OffZ = 0;
	}
	else
	{
		BaseZ = 0;
	}
	// If the chunk extends beyond the area in the X or Z axis, cut off the Size:
	if ((m_CurrentChunkX + 1) * cChunkDef::Width > m_OriginX + m_Area.m_SizeX)
	{
		SizeX -= (m_CurrentChunkX + 1) * cChunkDef::Width - (m_OriginX + m_Area.m_SizeX);
	}
	if ((m_CurrentChunkZ + 1) * cChunkDef::Width > m_OriginZ + m_Area.m_SizeZ)
	{
		SizeZ -= (m_CurrentChunkZ + 1) * cChunkDef::Width - (m_OriginZ + m_Area.m_SizeZ);
	}

	for (int y = 0; y < SizeY; y++)
	{
		int ChunkY = MinY + y;
		int AreaY = y;
		for (int z = 0; z < SizeZ; z++)
		{
			int ChunkZ = BaseZ + z;
			int AreaZ = OffZ + z;
			for (int x = 0; x < SizeX; x++)
			{
				int ChunkX = BaseX + x;
				int AreaX = OffX + x;
				m_Area.m_BlockTypes[m_Area.MakeIndex(AreaX, AreaY, AreaZ)] = cChunkDef::GetBlock(a_BlockTypes, ChunkX, ChunkY, ChunkZ);
			}  // for x
		}  // for z
	}  // for y
}





void cBlockArea::cChunkReader::BlockMeta(const NIBBLETYPE * a_BlockMetas)
{
	if (m_Area.m_BlockMetas == NULL)
	{
		// Don't want metas
		return;
	}
	CopyNibbles(m_Area.m_BlockMetas, a_BlockMetas);
}





void cBlockArea::cChunkReader::BlockLight(const NIBBLETYPE * a_BlockLight)
{
	if (m_Area.m_BlockLight == NULL)
	{
		// Don't want light
		return;
	}
	CopyNibbles(m_Area.m_BlockLight, a_BlockLight);
}





void cBlockArea::cChunkReader::BlockSkyLight(const NIBBLETYPE * a_BlockSkyLight)
{
	if (m_Area.m_BlockSkyLight == NULL)
	{
		// Don't want skylight
		return;
	}
	CopyNibbles(m_Area.m_BlockSkyLight, a_BlockSkyLight);
}