aboutsummaryrefslogtreecommitdiff
path: root/engines/m4/animation.cpp
blob: 0ead57aac95a1dad20d0538f73b1f5d8395dbc9d (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
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
/* 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.
 *
 * $URL$
 * $Id$
 *
 */

#include "m4/assets.h"
#include "m4/animation.h"
#include "m4/compression.h"
#include "m4/mads_scene.h"

namespace M4 {

// TODO: this code needs cleanup

MadsAnimation::MadsAnimation(MadsM4Engine *vm, MadsView *view): Animation(vm), _view(view) {
	_font = NULL;
	_resetFlag = false;
	_freeFlag = false;
	_skipLoad = false;
	_unkIndex = -1;
	_messageCtr= 0;
	_field12 = 0;

	_currentFrame = 0;
	_oldFrameEntry = 0;
	_nextFrameTimer = _madsVm->_currentTimer;
	_nextScrollTimer = 0;
}

MadsAnimation::~MadsAnimation() {
	for (uint i = 0; i < _messages.size(); ++i) {
		if (_messages[i].kernelMsgIndex >= 0)
			_view->_kernelMessages.remove(_messages[i].kernelMsgIndex);
	}

	// Further deletion logic
	if (_field12) {
		_view->_spriteSlots.deleteSprites(_spriteListIndexes[_spriteListIndex]);
	}
}

#define FILENAME_SIZE 13

/**
 * Initialises and loads the data of an animation
 */
void MadsAnimation::initialise(const Common::String &filename, uint16 flags, M4Surface *surface, M4Surface *depthSurface) {
	MadsPack anim(filename.c_str(), _vm);
	bool madsRes = filename[0] == '*';
	char buffer[20];
	int streamIndex = 1;

	// Chunk 1: header
	// header

	Common::SeekableReadStream *animStream = anim.getItemStream(0);

	int spriteListCount = animStream->readUint16LE();
	int miscEntriesCount = animStream->readUint16LE();
	int frameEntryCount = animStream->readUint16LE();
	int messagesCount = animStream->readUint16LE();
	animStream->skip(1);
	_flags = animStream->readByte();

	animStream->skip(2);
	_animMode = animStream->readUint16LE();
	_roomNumber = animStream->readUint16LE();
	animStream->skip(2);
	_field12 = animStream->readUint16LE() != 0;
	_spriteListIndex = animStream->readUint16LE();
	_scrollX = animStream->readSint16LE();
	_scrollY = animStream->readSint16LE();
	_scrollTicks = animStream->readUint16LE();
	animStream->skip(8);
	
	animStream->read(buffer, FILENAME_SIZE);
	buffer[FILENAME_SIZE] = '\0';
	_interfaceFile = Common::String(buffer);

	for (int i = 0; i < 10; ++i) {
		animStream->read(buffer, FILENAME_SIZE);
		buffer[FILENAME_SIZE] = '\0';
		_spriteSetNames[i] = Common::String(buffer);
	}

	animStream->skip(81);
	animStream->read(buffer, FILENAME_SIZE);
	buffer[FILENAME_SIZE] = '\0';
	_lbmFilename = Common::String(buffer);

	animStream->skip(365);
	animStream->read(buffer, FILENAME_SIZE);
	buffer[FILENAME_SIZE] = '\0';
	_spritesFilename = Common::String(buffer);

	animStream->skip(48);
	animStream->read(buffer, FILENAME_SIZE);
	buffer[FILENAME_SIZE] = '\0';
	_soundName = Common::String(buffer);

	animStream->skip(13);
	animStream->read(buffer, FILENAME_SIZE);
	buffer[FILENAME_SIZE] = '\0';
	_dsrName = Common::String(buffer);

	animStream->read(buffer, FILENAME_SIZE);
	buffer[FILENAME_SIZE] = '\0';
	Common::String fontResource(buffer);

	if (_animMode == 4)
		flags |= 0x4000;
	if (flags & 0x100)
		loadInterface(surface, depthSurface);

	// Initialise the reference list
	for (int i = 0; i < spriteListCount; ++i)
		_spriteListIndexes.push_back(-1);

	delete animStream;

	if (messagesCount > 0) {
		// Chunk 2
		// Following is a list of any messages for the animation

		animStream = anim.getItemStream(streamIndex++);

		for (int i = 0; i < messagesCount; ++i) {
			AnimMessage rec;
			rec.soundId = animStream->readSint16LE();
			animStream->read(rec.msg, 64);
			animStream->skip(4);
			rec.pos.x = animStream->readSint16LE();
			rec.pos.y = animStream->readSint16LE();
			rec.flags = animStream->readUint16LE();
			rec.rgb1.r = animStream->readByte() << 2;
			rec.rgb1.g = animStream->readByte() << 2;
			rec.rgb1.b = animStream->readByte() << 2;
			rec.rgb2.r = animStream->readByte() << 2;
			rec.rgb2.g = animStream->readByte() << 2;
			rec.rgb2.b = animStream->readByte() << 2;
			animStream->skip(2);	// Space for kernelMsgIndex
			rec.kernelMsgIndex = -1;
			animStream->skip(6);
			rec.startFrame = animStream->readUint16LE();
			rec.endFrame = animStream->readUint16LE();
			animStream->skip(2);

			_messages.push_back(rec);
		}

		delete animStream;
	}

	if (frameEntryCount > 0) {
		// Chunk 3: animation frame info
		animStream = anim.getItemStream(streamIndex++);

		for (int i = 0; i < frameEntryCount; i++) {
			AnimFrameEntry rec;
			rec.frameNumber = animStream->readUint16LE();
			rec.seqIndex = animStream->readByte();
			rec.spriteSlot.spriteListIndex = animStream->readByte();
			rec.spriteSlot.frameNumber = animStream->readUint16LE();
			rec.spriteSlot.xp = animStream->readSint16LE();
			rec.spriteSlot.yp = animStream->readSint16LE();
			rec.spriteSlot.depth = animStream->readSByte();
			rec.spriteSlot.scale = (int8)animStream->readByte();

			_frameEntries.push_back(rec);
		}

		delete animStream;
	}

	if (miscEntriesCount > 0) {
		// Chunk 4: Misc Data
		animStream = anim.getItemStream(streamIndex);

		for (int i = 0; i < miscEntriesCount; ++i) {
			AnimMiscEntry rec;
			rec.soundNum = animStream->readByte();
			rec.msgIndex = animStream->readSByte();
			rec.numTicks = animStream->readUint16LE();
			rec.posAdjust.x = animStream->readUint16LE();
			rec.posAdjust.y = animStream->readUint16LE();
			animStream->readUint16LE();

			_miscEntries.push_back(rec);
		}

		delete animStream;
	}

	// If the animation specifies a font, then load it for access
	if (_flags & ANIM_CUSTOM_FONT) {
		Common::String fontName;
		if (madsRes)
			fontName += "*";
		fontName += fontResource;

		if (fontName != "")
			_font = _vm->_font->getFont(fontName.c_str());
		else
			warning("Attempted to set a font with an empty name");
	}

	// If a speech file is specified, then load it
	if (!_dsrName.empty())
		_vm->_sound->loadDSRFile(_dsrName.c_str());

	// Load all the sprite sets for the animation
	for (int i = 0; i < spriteListCount; ++i) {
		if (_field12 && (i == _spriteListIndex))
			// Skip over field, since it's manually loaded		
			continue;

		_spriteListIndexes[i] = _view->_spriteSlots.addSprites(_spriteSetNames[i].c_str());
	}


	if (_field12) {
		Common::String resName;
		if (madsRes)
			resName += "*";
		resName += _spriteSetNames[_spriteListIndex];
		
		_spriteListIndexes[_spriteListIndex] = _view->_spriteSlots.addSprites(resName.c_str());
	}

	// TODO: Unknown section about handling sprite set list combined with messages size

	// TODO: The original has two separate loops for the loop below based on _animMode == 4. Is it
	// perhaps that in that mode the sprite frames has a different format..?

	// Remap the sprite list index fields from the initial value to the indexes of the loaded
	// sprite sets for the animation
	for (uint i = 0; i < _frameEntries.size(); ++i)  {
		int idx = _frameEntries[i].spriteSlot.spriteListIndex;
		_frameEntries[i].spriteSlot.spriteListIndex = _spriteListIndexes[idx];
	}

	if (hasScroll())
		_nextScrollTimer = _madsVm->_currentTimer + _scrollTicks;
}

/**
 * Loads an animation file for display
 */
void MadsAnimation::load(const Common::String &filename, int abortTimers) {
	initialise(filename, 0, NULL, NULL);
	_messageCtr = 0;
	_skipLoad = true;

/* TODO:  figure out extra stuff in this routine
	if (_field12) {
		_unkIndex = -1;
		int listIndex = _spriteListIndexes[_spriteListIndex];
		SpriteAsset &spriteSet = _view->_spriteSlots.getSprite(listIndex);
		..?..
	}
*/

	// Initialise miscellaneous fields
	_currentFrame = 0;
	_oldFrameEntry = 0;
	_nextFrameTimer = _madsVm->_currentTimer;
	_abortTimers = abortTimers;
	_abortMode = _madsVm->scene()->_abortTimersMode2;

	for (int i = 0; i < 3; ++i)
		_actionNouns[i] = _madsVm->globals()->actionNouns[i];

	// Initialise kernel message list
	for (uint i = 0; i < _messages.size(); ++i)
		_messages[i].kernelMsgIndex = -1;
}

void MadsAnimation::update() {
	if (_field12) {
		int spriteListIndex = _spriteListIndexes[_spriteListIndex];
		int newIndex = -1;
		
		for (uint idx = _oldFrameEntry; idx < _frameEntries.size(); ++idx) {
			if (_frameEntries[idx].frameNumber > _currentFrame)
				break;
			if (_frameEntries[idx].spriteSlot.spriteListIndex == spriteListIndex)
				newIndex = _frameEntries[idx].spriteSlot.frameNumber;
		}

		if (newIndex >= 0)
			load1(newIndex);
	}

	// Check for scroll change
	bool screenChanged = false;

	// Handle any scrolling of the screen surface
	if (hasScroll() && (_madsVm->_currentTimer >= _nextScrollTimer)) {
		_view->_bgSurface->scrollX(_scrollX);
		_view->_bgSurface->scrollY(_scrollY);

		_nextScrollTimer = _madsVm->_currentTimer + _scrollTicks;
		screenChanged = true;
	}

	// If it's not time for the next frame, then exit
	if (_madsVm->_currentTimer < _nextFrameTimer) {
		if (screenChanged)
			_view->_spriteSlots.fullRefresh();
		return;
	}

	// Loop checks for any prior animation sprite slots to be expired
	for (int slotIndex = 0; slotIndex < _view->_spriteSlots.startIndex; ++slotIndex) {
		if (_view->_spriteSlots[slotIndex].seqIndex >= 0x80) {
			// Flag the frame as animation sprite slot
			_view->_spriteSlots[slotIndex].spriteType = EXPIRED_SPRITE;
		}
	}

	// Validate the current frame
	if (_currentFrame >= (int)_miscEntries.size()) {
		// Is the animation allowed to be repeated?
		if (_resetFlag) {
			_currentFrame = 0;
			_oldFrameEntry = 0;
		} else {
			_freeFlag = true;
			return;
		}
	}

	// Handle starting any sound for this frame
	AnimMiscEntry &misc = _miscEntries[_currentFrame];
	if (misc.soundNum)
		_vm->_sound->playSound(misc.soundNum);

	// Handle any offset adjustment for sprites as of this frame
	if (_view->_posAdjust.x != misc.posAdjust.x) {
		_view->_posAdjust.x = misc.posAdjust.x;
		screenChanged = true;
	}
	if (_view->_posAdjust.y != misc.posAdjust.y) {
		_view->_posAdjust.y = misc.posAdjust.y;
		screenChanged = true;
	}


	if (screenChanged) {
		// Signal the entire screen needs refreshing
		_view->_spriteSlots.fullRefresh();
	}

	int spriteSlotsMax = _view->_spriteSlots.startIndex;

	// Main frame animation loop - frames get animated by being placed, as necessary, into the
	// main sprite slot array
	while ((uint)_oldFrameEntry < _frameEntries.size()) {
		if (_frameEntries[_oldFrameEntry].frameNumber > _currentFrame)
			break;
		else if (_frameEntries[_oldFrameEntry].frameNumber == _currentFrame) {
			// Found the correct frame 
			int spriteSlotIndex = 0;
			int index = 0;

			for (;;) {
				if ((spriteSlotIndex == 0) && (index < spriteSlotsMax)) {
					int seqIndex = _frameEntries[_oldFrameEntry].seqIndex - _view->_spriteSlots[index].seqIndex;
					if (seqIndex == 0x80) {
						if (_view->_spriteSlots[index] == _frameEntries[_oldFrameEntry].spriteSlot) {
							_view->_spriteSlots[index].spriteType = SPRITE_ZERO;
							spriteSlotIndex = -1;
						}
					}
					++index;
					continue;
				} 
				
				if (spriteSlotIndex == 0) {
					int slotIndex = _view->_spriteSlots.getIndex();
					MadsSpriteSlot &slot = _view->_spriteSlots[slotIndex];
					slot.copy(_frameEntries[_oldFrameEntry].spriteSlot);
					slot.seqIndex = _frameEntries[_oldFrameEntry].seqIndex + 0x80;
					
					SpriteAsset &spriteSet = _view->_spriteSlots.getSprite(
						_view->_spriteSlots[slotIndex].spriteListIndex);
					slot.spriteType = spriteSet.isBackground() ? BACKGROUND_SPRITE : FOREGROUND_SPRITE;
				}
				break;
			}
		}
		
		++_oldFrameEntry;
	}

	// Handle the display of any messages
	for (uint idx = 0; idx < _messages.size(); ++idx) {
		if (_messages[idx].kernelMsgIndex >= 0) {
			// Handle currently active message
			if ((_currentFrame < _messages[idx].startFrame) || (_currentFrame > _messages[idx].endFrame)) {
				_view->_kernelMessages.remove(_messages[idx].kernelMsgIndex);
				_messages[idx].kernelMsgIndex = -1;
				--_messageCtr;
			}
		} else if ((_currentFrame >= _messages[idx].startFrame) && (_currentFrame <= _messages[idx].endFrame)) {
			// Start displaying the message
			AnimMessage &me = _messages[idx];

			// The colour index to use is dependant on how many messages are currently on-screen
			uint8 colIndex;
			switch (_messageCtr) {
			case 1:
				colIndex = 252;
				break;
			case 2:
				colIndex = 16;
				break;
			default:
				colIndex = 250;
				break;
			}

			_vm->_palette->setEntry(colIndex, me.rgb1.r, me.rgb1.g, me.rgb1.b);
			_vm->_palette->setEntry(colIndex + 1, me.rgb2.r, me.rgb2.g, me.rgb2.b);

			// Add a kernel message to display the given text
			me.kernelMsgIndex = _view->_kernelMessages.add(me.pos, colIndex * 0x101 + 0x100, 0, 0, INDEFINITE_TIMEOUT, me.msg);
			assert(me.kernelMsgIndex >= 0);

			// Play the associated sound, if it exists
			if (me.soundId > 0)
				_vm->_sound->playDSRSound(me.soundId - 1, 255, false);
			++_messageCtr;
		}
	}

	// Move to the next frame
	_currentFrame++;
	if (_currentFrame >= (int)_miscEntries.size()) {
		// Animation is complete
		if (_abortTimers != 0) {
			_view->_abortTimers = _abortTimers;
			_view->_abortTimersMode = _abortMode;

			if (_abortMode != ABORTMODE_1) {
				// Copy the noun list
				for (int i = 0; i < 3; ++i)
					_madsVm->globals()->actionNouns[i] = _actionNouns[i];
			}
		}
	}

	int frameNum = MIN(_currentFrame, (int)_miscEntries.size() - 1);
	_nextFrameTimer = _madsVm->_currentTimer + _miscEntries[frameNum].numTicks;
}

void MadsAnimation::setCurrentFrame(int frameNumber) {
	_currentFrame = frameNumber;
	_oldFrameEntry = 0;
	_freeFlag = false;

	_nextScrollTimer = _nextFrameTimer = _madsVm->_currentTimer;
}

int MadsAnimation::getCurrentFrame() {
	return _currentFrame;
}

void MadsAnimation::load1(int frameNumber) {
	if (_skipLoad)
		return;

	Common::Point pt;
	int listIndex = _spriteListIndexes[_spriteListIndex];
	SpriteAsset &spriteSet = _view->_spriteSlots.getSprite(listIndex);

	if (_unkIndex < 0) {
		M4Surface *frame = spriteSet.getFrame(0);
		pt.x = frame->bounds().left;
		pt.y = frame->bounds().top;
	} else {
		pt.x = _unkList[_unkIndex].x;
		pt.y = _unkList[_unkIndex].y;
		_unkIndex = 1 - _unkIndex;
	}

	if (proc1(spriteSet, pt, frameNumber))
		error("proc1 failure");
}

bool MadsAnimation::proc1(SpriteAsset &spriteSet, const Common::Point &pt, int frameNumber) {
	return 0;
}

void MadsAnimation::loadInterface(M4Surface *&interfaceSurface, M4Surface *&depthSurface) {
	if (_animMode <= 2) {
		MadsSceneResources sceneResources;
		sceneResources.load(_roomNumber, _interfaceFile.c_str(), 0, depthSurface, interfaceSurface);

	} else if (_animMode == 4) {
		// Load a scene interface
		interfaceSurface->madsLoadInterface(_interfaceFile);
	} else {
		// This mode allocates two large surfaces for the animation
		// TODO: Are these ever properly freed?
error("Anim mode %d - need to check free logic", _animMode);
		assert(!interfaceSurface);
		assert(!depthSurface);
		depthSurface = new M4Surface(MADS_SURFACE_WIDTH, MADS_SCREEN_HEIGHT);
		interfaceSurface = new M4Surface(MADS_SURFACE_WIDTH, MADS_SCREEN_HEIGHT);
		depthSurface->clear();
		interfaceSurface->clear();
	}
}

} // End of namespace M4