aboutsummaryrefslogtreecommitdiff
path: root/engines/cge/vga13h.h
blob: f72d4c693dad1107ec0e5ed285a551b8d3b8595a (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
/* 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.
 *
 */

/*
 * This code is based on original Soltys source code
 * Copyright (c) 1994-1995 Janus B. Wisniewski and L.K. Avalon
 */

#ifndef __CGE_VGA13H__
#define __CGE_VGA13H__

#include "common/serializer.h"
#include "graphics/surface.h"
#include "cge/general.h"
#include "cge/bitmap.h"
#include "cge/snail.h"
#include "cge/cge.h"

namespace CGE {

#define FADE_STEP   2
#define TMR_DIV     ((0x8000/TMR_RATE)*2)
#define NREP         9
#define FREP        24

#define TMR_RATE1   16
#define TMR_RATE2   4
#define TMR_RATE   (TMR_RATE1 * TMR_RATE2)

#define MAX_NAME    20
#define VIDEO       0x10

#define NO_CLEAR    0x80
#define TEXT_MODE   0x03
#define M13H        0x13

#define LIGHT       0xFF
#define DARK        207
#define DGRAY       225 /*219*/
#define GRAY        231
#define LGRAY       237
#define kPixelTransp 0xFE

#define NO_SEQ      (-1)
#define NO_PTR      ((uint8)-1)

#define SPR_EXT     ".SPR"

struct Rgb {
	uint16 _r : 2;
	uint16 _R : 6;
	uint16 _g : 2;
	uint16 _G : 6;
	uint16 _b : 2;
	uint16 _B : 6;
};

typedef union {
	Dac _dac;
	Rgb _rgb;
} Trgb;

struct VgaRegBlk {
	uint8 _idx;
	uint8 _adr;
	uint8 _clr;
	uint8 _set;
};

struct Seq {
	uint8 _now;
	uint8 _next;
	int8 _dx;
	int8 _dy;
	int _dly;
};

extern Seq _seq1[];
extern Seq _seq2[];
//extern    SEQ *   Compass[];
//extern    SEQ TurnToS[];

#define kPalCount  256
#define kPalSize  (kPalCount * 3)

#define VGAATR_ 0x3C0
#define VGASEQ_ 0x3C4
#define VGAGRA_ 0x3CE
#define VGACRT_ 0x3D4
#define VGAST1_ 0x3DA
#define VGAATR  (VGAATR_ & 0xFF)
#define VGASEQ  (VGASEQ_ & 0xFF)
#define VGAGRA  (VGAGRA_ & 0xFF)
#define VGACRT  (VGACRT_ & 0xFF)

class SprExt {
public:
	int _x0;
	int _y0;
	int _x1;
	int _y1;
	BitmapPtr _b0;
	BitmapPtr _b1;
	BitmapPtr *_shpList;
	Seq *_seq;
	char *_name;
	Snail::Com *_near;
	Snail::Com *_take;
	SprExt() :
		_x0(0), _y0(0),
		_x1(0), _y1(0),
		_b0(NULL), _b1(NULL),
		_shpList(NULL), _seq(NULL),
		_name(NULL), _near(NULL), _take(NULL)
	{}
};


class Sprite {
protected:
	SprExt *_ext;
public:
	int _ref;
	signed char _cave;
	struct Flags {
		uint16 _hide : 1;       // general visibility switch
		uint16 _near : 1;       // Near action lock
		uint16 _drag : 1;       // sprite is moveable
		uint16 _hold : 1;       // sprite is held with mouse
		uint16 _____ : 1;       // intrrupt driven animation
		uint16 _slav : 1;       // slave object
		uint16 _syst : 1;       // system object
		uint16 _kill : 1;       // dispose memory after remove
		uint16 _xlat : 1;       // 2nd way display: xlat table
		uint16 _port : 1;       // portable
		uint16 _kept : 1;       // kept in pocket
		uint16 _east : 1;       // talk to east (in opposite to west)
		uint16 _shad : 1;       // shadow
		uint16 _back : 1;       // 'send to background' request
		uint16 _bDel : 1;       // delete bitmaps in ~SPRITE
		uint16 _tran : 1;       // transparent (untouchable)
	} _flags;
	int _x;
	int _y;
	signed char _z;
	uint16 _w;
	uint16 _h;
	uint16 _time;
	uint8 _nearPtr;
	uint8 _takePtr;
	int _seqPtr;
	int _shpCnt;
	char _file[kMaxFile];
	Sprite *_prev;
	Sprite *_next;

	bool works(Sprite *spr);
	bool seqTest(int n);
	inline bool active() {
		return _ext != NULL;
	}

	Sprite(CGEEngine *vm, BitmapPtr *shp);
	virtual ~Sprite();
	BitmapPtr shp();
	BitmapPtr *setShapeList(BitmapPtr *shp);
	void moveShapes(uint8 *buf);
	Sprite *expand();
	Sprite *contract();
	Sprite *backShow(bool fast = false);
	void setName(char *name);
	inline char *name() {
		return (_ext) ? _ext->_name : NULL;
	}
	void gotoxy(int x, int y);
	void center();
	void show();
	void hide();
	BitmapPtr ghost();
	void show(uint16 pg);
	void makeXlat(uint8 *x);
	void killXlat();
	void step(int nr = -1);
	Seq *setSeq(Seq *seq);
	Snail::Com *snList(SnList type);
	virtual void touch(uint16 mask, int x, int y);
	virtual void tick();
	void sync(Common::Serializer &s);
private:
	CGEEngine *_vm;
};


class Queue {
	Sprite *_head;
	Sprite *_tail;
public:
	Queue(bool show);
	~Queue();

	bool _show;

	void append(Sprite *spr);
	void insert(Sprite *spr, Sprite *nxt);
	void insert(Sprite *spr);
	Sprite *remove(Sprite *spr);
	void forAll(void (*fun)(Sprite *));
	Sprite *first() {
		return _head;
	}
	Sprite *last() {
		return _tail;
	}
	Sprite *locate(int ref);
	void clear();
};


class Vga {
	uint16 _oldMode;
	uint16 *_oldScreen;
	uint16 _statAdr;
	bool _setPal;
	Dac *_oldColors;
	Dac *_newColors;
	const char *_msg;
	const char *_name;

	int setMode(int mode);
	void updateColors();
	void setColors();
	void setStatAdr();
	void waitVR(bool on);
public:
	uint32 _frmCnt;
	Queue *_showQ;
	Queue *_spareQ;
	int _mono;
	static Graphics::Surface *_page[4];
	static Dac *_sysPal;

	Vga(int mode);
	~Vga();
	static void init();
	static void deinit();

	void setup(VgaRegBlk *vrb);
	void getColors(Dac *tab);
	void setColors(Dac *tab, int lum);
	void clear(uint8 color);
	void copyPage(uint16 d, uint16 s);
	void sunrise(Dac *tab);
	void sunset();
	void show();
	void update();

	static void palToDac(const byte *palData, Dac *tab);
	static void dacToPal(const Dac *tab, byte *palData);
};

class HorizLine: public Sprite {
public:
	HorizLine(CGEEngine *vm);
};

class CavLight: public Sprite {
public:
	CavLight(CGEEngine *vm);
};

class Spike: public Sprite {
public:
	Spike(CGEEngine *vm);
};

class PocLight: public Sprite {
public:
	PocLight(CGEEngine *vm);
};


Dac mkDac(uint8 r, uint8 g, uint8 b);
Rgb mkRgb(uint8 r, uint8 g, uint8 b);


template <class CBLK>
uint8 closest(CBLK *pal, CBLK x) {
#define f(col, lum) ((((uint16)(col)) << 8) / lum)
	uint16 i, dif = 0xFFFF, found = 0;
	uint16 L = x._r + x._g + x._b;
	if (!L)
		++L;
	uint16 R = f(x._r, L), G = f(x._g, L), B = f(x._b, L);
	for (i = 0; i < 256; i++) {
		uint16 l = pal[i]._r + pal[i]._g + pal[i]._b;
		if (! l)
			++l;
		int  r = f(pal[i]._r, l), g = f(pal[i]._g, l), b = f(pal[i]._b, l);
		uint16 D = ((r > R) ? (r - R) : (R - r)) +
		           ((g > G) ? (g - G) : (G - g)) +
		           ((b > B) ? (b - B) : (B - b)) +
		           ((l > L) ? (l - L) : (L - l)) * 10 ;

		if (D < dif) {
			found = i;
			dif = D;
			if (D == 0)
				break;    // exact!
		}
	}
	return found;
#undef f
}

uint16 *saveScreen();
void    restoreScreen(uint16 * &sav);
Sprite *spriteAt(int x, int y);
Sprite *locate(int ref);

extern bool _speedTest;

} // End of namespace CGE

#endif