aboutsummaryrefslogtreecommitdiff
path: root/engines/groovie/cursor.cpp
blob: 6422570220d07a1c1fdceadb13bb67abc5d6f2c4 (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
/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "groovie/cursor.h"
#include "groovie/groovie.h"

#include "common/debug.h"
#include "common/archive.h"
#include "common/file.h"
#include "common/macresman.h"
#include "common/textconsole.h"
#include "graphics/cursorman.h"

namespace Groovie {

// Cursor Manager

GrvCursorMan::GrvCursorMan(OSystem *system) :
	_syst(system), _lastTime(0), _current(255), _cursor(NULL) {
}

GrvCursorMan::~GrvCursorMan() {
	// Delete the cursors
	for (uint cursor = 0; cursor < _cursors.size(); cursor++) {
		delete _cursors[cursor];
	}

	CursorMan.popAllCursors();
}

void GrvCursorMan::show(bool visible) {
	CursorMan.showMouse(visible);
}

uint8 GrvCursorMan::getStyle() {
	return _current;
}

void GrvCursorMan::setStyle(uint8 newStyle) {
	// Reset the animation
	_lastFrame = 254;
	_lastTime = 1;

	// Save the new cursor
	_current = newStyle;
	_cursor = _cursors[newStyle];

	// Show the first frame
	_cursor->enable();
	animate();
}

void GrvCursorMan::animate() {
	if (_lastTime) {
		int newTime = _syst->getMillis();
		if (_lastTime - newTime >= 75) {
			_lastFrame++;
			_lastFrame %= _cursor->getFrames();
			_cursor->showFrame(_lastFrame);
			_lastTime = _syst->getMillis();
		}
	}
}


// t7g Cursor

class Cursor_t7g : public Cursor {
public:
	Cursor_t7g(uint8 *img, uint8 *pal);

	void enable();
	void showFrame(uint16 frame);

private:
	byte *_img;
	byte *_pal;
};

Cursor_t7g::Cursor_t7g(uint8 *img, uint8 *pal) :
	_pal(pal) {

	_width = img[0];
	_height = img[1];
	_numFrames = img[2];
	uint8 elinor1 = img[3];
	uint8 elinor2 = img[4];

	_img = img + 5;

	debugC(1, kGroovieDebugCursor | kGroovieDebugAll, "Groovie::Cursor: width: %d, height: %d, frames:%d", _width, _height, _numFrames);
	debugC(1, kGroovieDebugCursor | kGroovieDebugUnknown | kGroovieDebugAll, "Groovie::Cursor: elinor: 0x%02X (%d), 0x%02X (%d)", elinor1, elinor1, elinor2, elinor2);
}

void Cursor_t7g::enable() {
	// Apply the palette
	CursorMan.replaceCursorPalette(_pal, 0, 32);
}

void Cursor_t7g::showFrame(uint16 frame) {
	// Set the mouse cursor
	int offset = _width * _height * frame;
	CursorMan.replaceCursor((const byte *)_img + offset, _width, _height, _width >> 1, _height >> 1, 0);
}


// t7g Cursor Manager

#define NUM_IMGS 9
static const uint16 cursorDataOffsets[NUM_IMGS] = {
0x0000, 0x182f, 0x3b6d, 0x50cc, 0x6e79, 0x825d, 0x96d7, 0xa455, 0xa776
};

#define NUM_PALS 7
//Pals: 0xb794, 0xb7f4, 0xb854, 0xb8b4, 0xb914, 0xb974, 0xb9d4

#define NUM_STYLES 11
// pyramid is cursor 8, eyes are 9 & 10
const uint GrvCursorMan_t7g::_cursorImg[NUM_STYLES] = {3, 5, 4, 3, 1, 0, 2, 6, 7, 8, 8};
const uint GrvCursorMan_t7g::_cursorPal[NUM_STYLES] = {0, 0, 0, 0, 2, 0, 1, 3, 5, 4, 6};

GrvCursorMan_t7g::GrvCursorMan_t7g(OSystem *system, Common::MacResManager *macResFork) :
	GrvCursorMan(system) {

	Common::SeekableReadStream *robgjd = 0;

	if (macResFork) {
		// Open the cursors file from the resource fork
		robgjd = macResFork->getResource("rob.gjd");
	} else {
		// Open the cursors file
		robgjd = SearchMan.createReadStreamForMember("rob.gjd");
	}

	if (!robgjd)
		error("Groovie::Cursor: Couldn't open rob.gjd");

	// Load the images
	for (uint imgnum = 0; imgnum < NUM_IMGS; imgnum++) {
		robgjd->seek(cursorDataOffsets[imgnum]);
		_images.push_back(loadImage(*robgjd));
	}

	// Load the palettes
	robgjd->seek(-0x60 * NUM_PALS, SEEK_END);
	for (uint palnum = 0; palnum < NUM_PALS; palnum++) {
		_palettes.push_back(loadPalette(*robgjd));
	}

	// Build the cursors
	for (uint cursor = 0; cursor < NUM_STYLES; cursor++) {
		Cursor *s = new Cursor_t7g(_images[_cursorImg[cursor]], _palettes[_cursorPal[cursor]]);
		_cursors.push_back(s);
	}

	delete robgjd;
}

GrvCursorMan_t7g::~GrvCursorMan_t7g() {
	// Delete the images
	for (uint img = 0; img < _images.size(); img++) {
		delete[] _images[img];
	}

	// Delete the palettes
	for (uint pal = 0; pal < _palettes.size(); pal++) {
		delete[] _palettes[pal];
	}
}

byte *GrvCursorMan_t7g::loadImage(Common::SeekableReadStream &file) {
	uint16 decompbytes = 0, offset, i, length;
	uint8 flagbyte, lengthmask = 0x0F, offsetlen, var_8;
	byte *cursorStorage = new byte[65536];
	uint8 *runningcursor = cursorStorage;

	bool finished = false;
	while (!(finished || file.eos())) {
		flagbyte = file.readByte();
		for (i = 1; i <= 8; i++) {
			if (!file.eos()) {
				if (flagbyte & 1) {
					*(runningcursor++) = file.readByte();
					decompbytes++;
				} else {
					var_8 = file.readByte();
					offsetlen = file.readByte();
					if (var_8 == 0 && offsetlen == 0) {
						finished = true;
						break;
					}
					length = (offsetlen & lengthmask) + 3;
					offsetlen >>= 4;
					offset = (offsetlen << 8) + var_8;
					decompbytes += length;

					for (; length > 0; length--, runningcursor++) {
						*(runningcursor) = *(runningcursor - offset);
					}
				}
				flagbyte = flagbyte >> 1;
			}
		}
	}

	return cursorStorage;
}

byte *GrvCursorMan_t7g::loadPalette(Common::SeekableReadStream &file) {
	byte *palette = new byte[3 * 32];
	file.read(palette, 3 * 32);
	return palette;
}


// v2 Cursor

class Cursor_v2 : public Cursor {
public:
	Cursor_v2(Common::File &file);
	~Cursor_v2();

	void enable();
	void showFrame(uint16 frame);

private:
	// Currently locked to 16bit
	byte *_img;

	Graphics::PixelFormat _format;

	void decodeFrame(byte *pal, byte *data, byte *dest);
};

Cursor_v2::Cursor_v2(Common::File &file) {
	byte *pal = new byte[0x20 * 3];

	_format = g_system->getScreenFormat();

	_numFrames = file.readUint16LE();
	_width = file.readUint16LE();
	_height = file.readUint16LE();

	_img = new byte[_width * _height * _numFrames * 2];

	debugC(1, kGroovieDebugCursor | kGroovieDebugAll, "Groovie::Cursor: width: %d, height: %d, frames:%d", _width, _height, _numFrames);

	uint16 tmp16 = file.readUint16LE();
	debugC(5, kGroovieDebugCursor | kGroovieDebugAll, "hotspot x?: %d\n", tmp16);
	tmp16 = file.readUint16LE();
	debugC(5, kGroovieDebugCursor | kGroovieDebugAll, "hotspot y?: %d\n", tmp16);
	int loop2count = file.readUint16LE();
	debugC(5, kGroovieDebugCursor | kGroovieDebugAll, "loop2count?: %d\n", loop2count);
	for (int l = 0; l < loop2count; l++) {
		tmp16 = file.readUint16LE();
		debugC(5, kGroovieDebugCursor | kGroovieDebugAll, "loop2a: %d\n", tmp16);	// Index frame can merge to/from?
		tmp16 = file.readUint16LE();
		debugC(5, kGroovieDebugCursor | kGroovieDebugAll, "loop2b: %d\n", tmp16);	// Number of frames?
	}

	file.read(pal, 0x20 * 3);

	for (int f = 0; f < _numFrames; f++) {
		uint32 tmp32 = file.readUint32LE();
		debugC(5, kGroovieDebugCursor | kGroovieDebugAll, "loop3: %d\n", tmp32);

		byte *data = new byte[tmp32];
		file.read(data, tmp32);
		decodeFrame(pal, data, _img + (f * _width * _height * 2));

		delete[] data;
	}

	delete[] pal;
}

Cursor_v2::~Cursor_v2() {
	delete[] _img;
}

void Cursor_v2::decodeFrame(byte *pal, byte *data, byte *dest) {
	// Scratch memory
	byte *tmp = new byte[_width * _height * 4];
	byte *ptr = tmp;
	memset(tmp, 0, _width * _height * 4);

	byte ctrA = 0, ctrB = 0;

	byte alpha = 0, palIdx = 0;

	byte r, g, b;

	// Start frame decoding
	for (int y = 0; y < _height; y++) {
		for (int x = 0; x < _width; x++) {
			// If both counters are empty
			if (ctrA == 0 && ctrB == 0) {
				if (*data & 0x80) {
					ctrA = (*data++ & 0x7F) + 1;
				} else {
					ctrB = *data++ + 1;
					alpha = *data & 0xE0;
					palIdx = *data++ & 0x1F;
				}
			}

			if (ctrA) {
				// Block type A - chunk of non-continuous pixels
				palIdx = *data & 0x1F;
				alpha = *data++ & 0xE0;

				r = *(pal + palIdx);
				g = *(pal + palIdx + 0x20);
				b = *(pal + palIdx + 0x40);

				ctrA--;
			} else {
				// Block type B - chunk of continuous pixels
				r = *(pal + palIdx);
				g = *(pal + palIdx + 0x20);
				b = *(pal + palIdx + 0x40);

				ctrB--;
			}

			// Decode pixel
			if (alpha) {
				if (alpha != 0xE0) {
					alpha = ((alpha << 8) / 224);

					// TODO: The * 0 to be replaced by the component value of each pixel
					//       below, respectively - does blending
					r = (byte)((alpha * r + (256 - alpha) * 0) >> 8);
					g = (byte)((alpha * g + (256 - alpha) * 0) >> 8);
					b = (byte)((alpha * b + (256 - alpha) * 0) >> 8);
				}

				*ptr = 1;
				*(ptr + 1) = r;
				*(ptr + 2) = g;
				*(ptr + 3) = b;
			}
			ptr += 4;
		}
	}

	// Convert to screen format
	// NOTE: Currently locked to 16bit
	ptr = tmp;
	for (int y = 0; y < _height; y++) {
		for (int x = 0; x < _width; x++) {
			if (*ptr == 1) {
				*(uint16 *)dest = (uint16)_format.RGBToColor(*(ptr + 1), *(ptr + 2), *(ptr + 3));
			} else {
				*(uint16 *)dest = 0;
			}
			dest += 2;
			ptr += 4;
		}
	}



}

void Cursor_v2::enable() {
}

void Cursor_v2::showFrame(uint16 frame) {
	int offset = _width * _height * frame * 2;
	CursorMan.replaceCursor((const byte *)(_img + offset), _width, _height, _width >> 1, _height >> 1, 0, false, &_format);
}


// v2 Cursor Manager

GrvCursorMan_v2::GrvCursorMan_v2(OSystem *system) :
	GrvCursorMan(system) {

	// Open the icons file
	Common::File iconsFile;
	if (!iconsFile.open("icons.ph"))
		error("Groovie::Cursor: Couldn't open icons.ph");

	// Verify the signature
	uint32 tmp32 = iconsFile.readUint32BE();
	uint16 tmp16 = iconsFile.readUint16LE();
	if (tmp32 != MKTAG('i','c','o','n') || tmp16 != 1)
		error("Groovie::Cursor: icons.ph signature failed: %s %d", tag2str(tmp32), tmp16);


	// Read the number of icons
	uint16 nicons = iconsFile.readUint16LE();

	// Read the icons
	for (int i = 0; i < nicons; i++) {
		Cursor *s = new Cursor_v2(iconsFile);
		_cursors.push_back(s);
	}

	iconsFile.close();
}

GrvCursorMan_v2::~GrvCursorMan_v2() {
}

void GrvCursorMan_v2::setStyle(uint8 newStyle) {
	// Cursor 4 is actually cursor 3, but with some changes to alpha blending
	// (which is currently not handled)
	GrvCursorMan::setStyle(newStyle == 4 ? 3 : newStyle);
}

} // End of Groovie namespace