aboutsummaryrefslogtreecommitdiff
path: root/sky/text.cpp
blob: 9e7635902f22884e37cd669e71b59a56862d6481 (plain)
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
/* ScummVM - Scumm Interpreter
 * Copyright (C) 2003 The ScummVM project
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header$
 *
 */

#include "stdafx.h"
#include "common/scummsys.h"
#include "sky/skydefs.h"
#include "sky/sky.h"
#include "sky/text.h"
#include "sky/logic.h"

#define FIRST_TEXT_SEC	77
#define	FIRST_TEXT_BUFFER	274
#define NO_OF_TEXT_SECTIONS	8	// 8 sections per language
#define	CHAR_SET_FILE	60150
#define MAX_SPEECH_SECTION	7 
#define CHAR_SET_HEADER	128
#define	MAX_NO_LINES	10

SkyText::SkyText(SkyDisk *skyDisk) {
	_skyDisk = skyDisk;

	initHuffTree();

	_mainCharacterSet.addr = _skyDisk->loadFile(CHAR_SET_FILE, NULL);
	_mainCharacterSet.charHeight = MAIN_CHAR_HEIGHT;
	_mainCharacterSet.charSpacing = 0;
	
	fnSetFont(0);

	if (!SkyState::isDemo()) {
		_controlCharacterSet.addr = _skyDisk->loadFile(60520, NULL);
		_controlCharacterSet.charHeight = 12;
		_controlCharacterSet.charSpacing = 0;

		// In version 0.0288, decrease the character width for the
		// LINC terminal font by one for every character, except
		// space which has to be one pixel wider instead.
		if (SkyState::_systemVars.gameVersion == 288) {
			for (int i = 1; i < CHAR_SET_HEADER; i++)
				_controlCharacterSet.addr[i]--;
			_controlCharacterSet.addr[0]++;
		}
		
		_linkCharacterSet.addr = _skyDisk->loadFile(60521, NULL);
		_linkCharacterSet.charHeight = 12;
		_linkCharacterSet.charSpacing = 1;
	} else {
		_controlCharacterSet.addr = NULL;
		_linkCharacterSet.addr = NULL;
	}

	if (SkyState::isCDVersion()) {
		_preAfterTableArea = _skyDisk->loadFile(60522, NULL);
	} else _preAfterTableArea = NULL;
}

SkyText::~SkyText(void) {

	if (_controlCharacterSet.addr) free(_controlCharacterSet.addr);
	if (_linkCharacterSet.addr) free(_linkCharacterSet.addr);
	if (_preAfterTableArea) free(_preAfterTableArea);
}

void SkyText::fnSetFont(uint32 fontNr) { 

	struct charSet *newCharSet;

	switch (fontNr) {
		case 0:
			newCharSet = &_mainCharacterSet;
			break;
		case 1:
			newCharSet = &_controlCharacterSet;
			break;
		case 2:
			newCharSet = &_linkCharacterSet;
			break;
		default:
			error("Tried to set invalid font (%d)", fontNr);
	}

	_curCharSet = fontNr;
	_characterSet = newCharSet->addr;
	_charHeight = (byte)newCharSet->charHeight;
	_dtCharSpacing = newCharSet->charSpacing;
}

void SkyText::fnTextModule(uint32 textInfoId, uint32 textNo) {

	fnSetFont(1);
	uint16* msgData = (uint16 *)SkyState::fetchCompact(textInfoId);
	lowTextManager_t textId = lowTextManager(textNo, msgData[1], msgData[2], 209, false);
	SkyLogic::_scriptVariables[RESULT] = textId.compactNum;
	Compact *textCompact = SkyState::fetchCompact(textId.compactNum);
	textCompact->xcood = msgData[3];
	textCompact->ycood = msgData[4];
	fnSetFont(0);
}

void SkyText::getText(uint32 textNr) { //load text #"textNr" into textBuffer
	uint32 sectionNo = (textNr & 0x0F000) >> 12;
	
	if (SkyState::_itemList[FIRST_TEXT_SEC + sectionNo] == (void **)NULL) { //check if already loaded
		debug(5, "Loading Text item(s) for Section %d", (sectionNo>>2));
		
		uint32 fileNo = sectionNo + ((SkyState::_systemVars.language * NO_OF_TEXT_SECTIONS) + 60600);
		SkyState::_itemList[FIRST_TEXT_SEC + sectionNo] = (void **)_skyDisk->loadFile((uint16)fileNo, NULL);
	}
	_textItemPtr = (uint8 *)SkyState::_itemList[FIRST_TEXT_SEC + sectionNo];
	
	uint32 offset = 0; 
	uint32 nr32MsgBlocks = (textNr & 0x0fe0);
	uint32 skipBytes; 
	byte *blockPtr;
	bool bitSeven; 
	
	if (nr32MsgBlocks) { 
		blockPtr = (byte *)(_textItemPtr + 4);
		nr32MsgBlocks >>= 5;
		do {
			offset += READ_LE_UINT16(blockPtr);
			blockPtr += 2;
		} while (--nr32MsgBlocks); 
	}
       
	uint32 remItems = textNr; 
	textNr &= 0x1f;
	if (textNr) {
	
		remItems &= 0x0fe0;
		remItems += READ_LE_UINT16(_textItemPtr);
		blockPtr = _textItemPtr + remItems; 
		
		do {
			skipBytes = *blockPtr++;
			bitSeven = (bool)((skipBytes >> (7)) & 0x1);
			skipBytes &= ~(1UL << 7);
	
			if (bitSeven) 
				skipBytes <<= 3;
		 
			offset += skipBytes;
	
		} while (--textNr);
	}

	uint32 numBits = offset;
	offset >>= 2;
	offset += READ_LE_UINT16(_textItemPtr + 2); 
	_textItemPtr += offset;

	//bit pointer: 0->8, 1->6, 2->4 ...
	numBits &= 3;
	numBits ^= 3; 
	numBits++;
	numBits <<= 1;

	_inputValue = *_textItemPtr++;
	char *dest = (char *)_textBuffer;
	char textChar;
	_shiftBits = (uint8) numBits; 

	do {
		textChar = getTextChar();
		*dest++ = textChar;	
	} while(textChar);
}

void SkyText::fnPointerText(uint32 pointedId, uint16 mouseX, uint16 mouseY) {

	Compact *ptrComp = SkyState::fetchCompact(pointedId);
	lowTextManager_t text = lowTextManager(ptrComp->cursorText, TEXT_MOUSE_WIDTH, L_CURSOR, 242, false);
	SkyLogic::_scriptVariables[CURSOR_ID] = text.compactNum;
	if (SkyLogic::_scriptVariables[MENU]) {
		_mouseOfsY = TOP_LEFT_Y - 2;
		if (mouseX < 150) _mouseOfsX = TOP_LEFT_X + 24;
		else _mouseOfsX = TOP_LEFT_X  - 8 - _lowTextWidth;
	} else {
        _mouseOfsY = TOP_LEFT_Y - 10;
		if (mouseX < 150) _mouseOfsX = TOP_LEFT_X + 13;
		else _mouseOfsX = TOP_LEFT_X - 8 - _lowTextWidth;
	}
	Compact *textCompact = SkyState::fetchCompact(text.compactNum);
	logicCursor(textCompact, mouseX, mouseY);
}

void SkyText::logicCursor(Compact *textCompact, uint16 mouseX, uint16 mouseY) {

	textCompact->xcood = (uint16)(mouseX + _mouseOfsX);
	textCompact->ycood = (uint16)(mouseY + _mouseOfsY);
	if (textCompact->ycood < TOP_LEFT_Y) textCompact->ycood = TOP_LEFT_Y;
}

bool SkyText::getTBit() {
	
	if (_shiftBits) {
		(_shiftBits)--;
	} else {
		_inputValue = *_textItemPtr++;
		_shiftBits = 7;
	} 
	
	return (bool)(((_inputValue) >> (_shiftBits)) & 1);
}

displayText_t SkyText::displayText(uint8 *dest, bool centre, uint16 pixelWidth, uint8 color) {
	//Render text in _textBuffer in buffer *dest
	return displayText(this->_textBuffer, dest, centre, pixelWidth, color);
}

displayText_t SkyText::displayText(char *textPtr, uint8 *dest, bool centre, uint16 pixelWidth, uint8 color) {
	
	//Render text pointed to by *textPtr in buffer *dest

	uint8 textChar;
	char *curPos = textPtr;
	char *lastSpace = curPos;
	byte *centerTblPtr = _centreTable;
	uint16 lineWidth = 0;  
	
	_dtCol = color;
	_dtLineWidth = pixelWidth;  
	_dtLines = 0;
	_dtLetters = 1;
	_dtData = dest;
	_dtText = textPtr;
	_dtCentre = centre;

	textChar = (uint8)*curPos++;
	_dtLetters++;

	while (textChar >= 0x20) {
		if ((_curCharSet == 1) && (textChar >= 0x80))
			textChar = 0x20;

		textChar -= 0x20;
		if (textChar == 0) {
			lastSpace = curPos; //keep track of last space
			*(uint32 *)centerTblPtr = TO_LE_32(lineWidth);
		}
		
		lineWidth += *(_characterSet+textChar);	//add character width
		lineWidth += (uint16)_dtCharSpacing;	//include character spacing
	
		if (pixelWidth <= lineWidth) {
	
			if (*(lastSpace-1) == 10)
				error("line width exceeded!");

			*(lastSpace-1) = 10;
			lineWidth = 0;
			_dtLines++;
			centerTblPtr += 4;	//get next space in centering table
			curPos = lastSpace;	//go back for new count
		}

		textChar = (uint8)*curPos++;
		_dtLetters++;
	}

	_dtLastWidth = lineWidth;	//save width of last line
	*(uint32 *)centerTblPtr = TO_LE_32(lineWidth);	//and update centering table
	_dtLines++;

	if (_dtLines > MAX_NO_LINES)
		error("Maximum no. of lines exceeded!");

	_dtLineSize = pixelWidth * _charHeight;
	uint32 numBytes = (_dtLineSize * _dtLines) + sizeof(struct dataFileHeader) + 4;	

	if (_dtData == NULL)
		_dtData = (byte *)malloc(numBytes);

	uint8 *curDest = _dtData; 

	uint32 bytesToClear = numBytes; //no of bytes to clear
	bytesToClear -= sizeof(struct dataFileHeader);	//don't touch the header.
	memset(curDest + sizeof(struct dataFileHeader), 0, bytesToClear);
	curPos += bytesToClear;

	//make the header
	((struct dataFileHeader *)curDest)->s_width = _dtLineWidth;
	((struct dataFileHeader *)curDest)->s_height = (uint16)(_charHeight * _dtLines);
	((struct dataFileHeader *)curDest)->s_sp_size = (uint16)(_dtLineWidth * _charHeight * _dtLines);
	((struct dataFileHeader *)curDest)->s_offset_x = 0;
	((struct dataFileHeader *)curDest)->s_offset_y = 0;
	
	//reset position
	curPos = textPtr;

	curDest += sizeof(struct dataFileHeader);	//point to where pixels start
	byte *prevDest = curDest;
	centerTblPtr = _centreTable;

	do {
		if (_dtCentre) {
		
			uint32 width = _dtLineWidth;
			width -= READ_LE_UINT32(centerTblPtr); 
			centerTblPtr += 4;
			width >>=1;
			curDest += width;
		}

		textChar = (uint8)*curPos++;
		while (textChar >= 0x20) {
			textChar -= 0x20;
			makeGameCharacter(textChar, _characterSet, curDest, color);
			textChar = *curPos++;
		}

		curDest = prevDest;	//start of last line
		curDest += _dtLineSize;	//start of next
		prevDest = curDest;

	} while (textChar >= 10);
	
	struct displayText_t ret;
	ret.textData = _dtData;
	ret.textWidth = _dtLastWidth;	
	return ret;
}

void SkyText::makeGameCharacter(uint8 textChar, uint8 *charSetPtr, uint8 *&dest, uint8 color) {

	bool maskBit, dataBit;	
	uint8 charWidth = (uint8)((*(charSetPtr + textChar)) + 1 - _dtCharSpacing);
	uint16 data, mask; 
	byte *charSpritePtr = charSetPtr + (CHAR_SET_HEADER + ((_charHeight << 2) * textChar));
	byte *startPos = dest;
	byte *curPos = startPos;

	for (int i = 0; i < _charHeight; i++) {

		byte *prevPos = curPos;
	
		data = READ_BE_UINT16(charSpritePtr);
		mask = READ_BE_UINT16(charSpritePtr + 2);
		charSpritePtr += 4;
		
		for (int j = 0; j < charWidth; j++) {
	
			maskBit = (mask & 0x8000) != 0; //check mask
			mask <<= 1;
			dataBit = (data & 0x8000) != 0; //check data
			data <<= 1;

			if (maskBit) 
				if (dataBit) 
					*curPos = color;
				else
					//black edge
					*curPos = 240; 

			curPos++;
		}

		//advance a line
		curPos = prevPos;
		curPos += _dtLineWidth;
	}
	
	//update position
	dest = startPos + charWidth + _dtCharSpacing*2 - 1; 

}

lowTextManager_t SkyText::lowTextManager(uint32 textNum, uint16 width, uint16 logicNum, uint8 color, bool centre) {

	getText(textNum);

	struct displayText_t textInfo = displayText(NULL, centre, width, color);
	
	_lowTextWidth = textInfo.textWidth;
	byte *textData = textInfo.textData;

	uint32 compactNum = FIRST_TEXT_COMPACT;

	Compact *cpt = SkyState::fetchCompact(compactNum);

	while (cpt->status != 0) { 
		compactNum++;
		cpt = SkyState::fetchCompact(compactNum);
	}

	cpt->flag = (uint16)(compactNum - FIRST_TEXT_COMPACT) + FIRST_TEXT_BUFFER;

	byte *oldText = (byte *)SkyState::_itemList[cpt->flag];
	SkyState::_itemList[cpt->flag] = (void **)textData; 

	if (oldText != NULL)
		free (oldText);

	cpt->logic = logicNum; 
	cpt->status = ST_LOGIC | ST_FOREGROUND | ST_RECREATE;
	cpt->screen = (uint16) SkyLogic::_scriptVariables[SCREEN];

	struct lowTextManager_t ret;
	ret.textData = _dtData;
	ret.compactNum = (uint16)compactNum;

	return ret;
}

void SkyText::changeTextSpriteColour(uint8 *sprData, uint8 newCol) {

	dataFileHeader *header = (dataFileHeader *)sprData;
	sprData += sizeof(dataFileHeader);
	for (uint16 cnt = 0; cnt < header->s_sp_size; cnt++)
		if (sprData[cnt] >= 241) sprData[cnt] = newCol;
}

void SkyText::initHuffTree() {
	switch (SkyState::_systemVars.gameVersion) {
	case 267:
		_huffTree = _huffTree_00267;
		break;
	case 288:
		_huffTree = _huffTree_00288;
		break;
	case 303:
		_huffTree = _huffTree_00303;
		break;
	case 331:
		_huffTree = _huffTree_00331;
		break;
	case 348:
		_huffTree = _huffTree_00348;
		break;
	case 365:
		_huffTree = _huffTree_00365;
		break;
	case 368:
		_huffTree = _huffTree_00368;
		break;
	case 372:
		_huffTree = _huffTree_00372;
		break;
	default:
		error("Unknown game version");
	}
}

char SkyText::getTextChar() {
	int pos = 0;
	for (;;) {
		if (getTBit() == 0)
			pos = _huffTree[pos].lChild;
		else
			pos = _huffTree[pos].rChild;
		if (_huffTree[pos].lChild == 0 && _huffTree[pos].rChild == 0) {
			return _huffTree[pos].value;
		}
	}
}