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vga13h.cpp
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vga13h.cpp
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/* 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 Sfinx source code
* Copyright (c) 1994-1997 Janus B. Wisniewski and L.K. Avalon
*/
#include "common/array.h"
#include "common/config-manager.h"
#include "common/rect.h"
#include "graphics/palette.h"
#include "cge2/general.h"
#include "cge2/vga13h.h"
#include "cge2/bitmap.h"
#include "cge2/text.h"
#include "cge2/cge2_main.h"
#include "cge2/cge2.h"
#include "cge2/vga13h.h"
namespace CGE2 {
Seq *getConstantSeq(bool seqFlag) {
const Seq seq1[] = { { 0, 0, 0, 0, 0 } };
const Seq seq2[] = { { 0, 1, 0, 0, 0 }, { 1, 0, 0, 0, 0 } };
Seq *seq;
if (seqFlag) {
seq = (Seq *)malloc(1 * sizeof(Seq));
*seq = seq1[0];
} else {
seq = (Seq *)malloc(2 * sizeof(Seq));
seq[0] = seq2[0];
seq[1] = seq2[1];
}
return seq;
}
void(*Sprite::notify) (void) = nullptr;
byte Sprite::_constY = 0;
byte Sprite::_follow = 0;
Seq Sprite::_stdSeq8[] =
{ { 0, 0, 0, 0, 0, 0 },
{ 1, 1, 0, 0, 0, 0 },
{ 2, 2, 0, 0, 0, 0 },
{ 3, 3, 0, 0, 0, 0 },
{ 4, 4, 0, 0, 0, 0 },
{ 5, 5, 0, 0, 0, 0 },
{ 6, 6, 0, 0, 0, 0 },
{ 7, 7, 0, 0, 0, 0 },
};
SprExt::SprExt(CGE2Engine *vm)
: _p0(vm, 0, 0), _p1(vm, 0, 0),
_b0(NULL), _b1(NULL), _shpList(NULL),
_location(0), _seq(NULL), _name(NULL) {
for (int i = 0; i < kActions; i++)
_actions[i] = nullptr;
}
Sprite::Sprite(CGE2Engine *vm)
: _siz(_vm, 0, 0), _seqPtr(kNoSeq), _seqCnt(0), _shpCnt(0),
_next(NULL), _prev(NULL), _time(0),
_ext(NULL), _ref(-1), _scene(0), _vm(vm),
_pos2D(_vm, kScrWidth >> 1, 0), _pos3D(kScrWidth >> 1, 0, 0) {
memset(_actionCtrl, 0, sizeof(_actionCtrl));
memset(_file, 0, sizeof(_file));
memset(&_flags, 0, sizeof(_flags));
_flags._frnt = 1;
}
Sprite::Sprite(CGE2Engine *vm, BitmapPtr *shpP, int cnt)
: _siz(_vm, 0, 0), _seqPtr(kNoSeq), _seqCnt(0), _shpCnt(0),
_next(NULL), _prev(NULL), _time(0),
_ext(NULL), _ref(-1), _scene(0), _vm(vm),
_pos2D(_vm, kScrWidth >> 1, 0), _pos3D(kScrWidth >> 1, 0, 0) {
memset(_actionCtrl, 0, sizeof(_actionCtrl));
memset(_file, 0, sizeof(_file));
memset(&_flags, 0, sizeof(_flags));
_flags._frnt = 1;
setShapeList(shpP, cnt);
}
Sprite::~Sprite() {
if (_vm->_sprite == this)
_vm->_sprite = NULL;
contract();
}
BitmapPtr Sprite::shp() {
SprExt *e = _ext;
if (!e || !e->_seq)
return NULL;
int i = e->_seq[_seqPtr]._now;
if (i >= _shpCnt)
error("Invalid PHASE in SPRITE::Shp() %s", _file);
return e->_shpList[i];
}
void Sprite::setShapeList(BitmapPtr *shp, int cnt) {
_shpCnt = cnt;
_siz.x = 0;
_siz.y = 0;
if (shp) {
for (int i = 0; i < cnt; i++) {
BitmapPtr p = *shp + i;
if (p->_w > _siz.x)
_siz.x = p->_w;
if (p->_h > _siz.y)
_siz.y = p->_h;
}
expand();
_ext->_shpList = shp;
if (!_ext->_seq) {
setSeq(_stdSeq8);
_seqCnt = (cnt < ARRAYSIZE(_stdSeq8)) ? cnt : ARRAYSIZE(_stdSeq8);
}
}
}
bool Sprite::works(Sprite *spr) {
//if (!spr || !spr->_ext)
// return false;
//CommandHandler::Command *c = spr->_ext->_take;
//if (c != NULL) {
// c += spr->_takePtr;
// if (c->_ref == _ref)
// if (c->_commandType != kCmdLabel || (c->_val == 0 || c->_val == _vm->_now))
// return true;
//}
warning("STUB: Sprite::works()");
return false;
}
Seq *Sprite::setSeq(Seq *seq) {
expand();
Seq *s = _ext->_seq;
_ext->_seq = seq;
if (_seqPtr == kNoSeq)
step(0);
else if (_time == 0)
step(_seqPtr);
return s;
}
bool Sprite::seqTest(int n) {
if (n >= 0)
return (_seqPtr == n);
if (_ext)
return (_ext->_seq[_seqPtr]._next == _seqPtr);
return true;
}
void Sprite::setName(char *newName) {
if (!_ext)
return;
if (_ext->_name) {
delete[] _ext->_name;
_ext->_name = NULL;
}
if (newName) {
_ext->_name = new char[strlen(newName) + 1];
assert(_ext->_name != NULL);
strcpy(_ext->_name, newName);
}
}
int Sprite::labVal(Action snq, int lab) {
warning("STUB: Sprite::labVal()");
return 0;
}
CommandHandler::Command *Sprite::snList(Action type) {
SprExt *e = _ext;
return (e) ? e->_actions[type] : NULL;
}
Sprite *Sprite::expand() {
if (_ext)
return this;
if (notify != nullptr)
notify();
_ext = new SprExt(_vm);
assert(_ext != NULL);
if (!*_file)
return this;
Common::Array<BitmapPtr> shplist;
for (int i = 0; i < _shpCnt; ++i)
shplist.push_back(NULL);
int cnt[kActions],
shpcnt = 0,
seqcnt = 0,
maxnow = 0,
maxnxt = 0;
char fname[kPathMax];
_vm->mergeExt(fname, _file, kSprExt);
Seq *seq;
if (_seqCnt) {
seq = new Seq[_seqCnt];
if (seq == NULL)
error("No core %s", fname);
} else
seq = nullptr;
for (int i = 0; i < kActions; i++)
cnt[i] = 0;
for (int i = 0; i < kActions; i++){
byte n = _actionCtrl[i]._cnt;
if (n) {
_ext->_actions[i] = new CommandHandler::Command[n];
if (_ext->_actions[i] == nullptr)
error("No core %s", fname);
} else
_ext->_actions[i] = nullptr;
}
if (_vm->_resman->exist(fname)) { // sprite description file exist
EncryptedStream sprf(_vm, fname);
if (sprf.err())
error("Bad SPR [%s]", fname);
int label = kNoByte;
ID section = kIdPhase;
ID id;
Common::String line;
char tmpStr[kLineMax + 1];
for (line = sprf.readLine(); !sprf.eos(); line = sprf.readLine()){
if (line.size() == 0)
continue;
Common::strlcpy(tmpStr, line.c_str(), sizeof(tmpStr));
char *p = _vm->token(tmpStr);
if (*p == '@') {
label = atoi(p + 1);
continue;
}
id = _vm->ident(p);
switch (id) {
case kIdType:
break;
case kIdNear:
case kIdMTake:
case kIdFTake:
case kIdPhase:
case kIdSeq:
section = id;
break;
case kIdName:
Common::strlcpy(tmpStr, line.c_str(), sizeof(tmpStr));
for (p = tmpStr; *p != '='; p++); // We search for the =
setName(_vm->tail(p));
break;
default:
if (id >= kIdNear)
break;
Seq *s;
switch (section) {
case kIdNear:
case kIdMTake:
case kIdFTake:
id = (ID)_vm->_commandHandler->com(p);
if (_actionCtrl[section]._cnt) {
CommandHandler::Command *c = &_ext->_actions[section][cnt[section]++];
c->_commandType = CommandType(id);
c->_lab = label;
if ((p = _vm->token(nullptr)) == NULL)
error("Unexpected end of file! %s", fname);
c->_ref = _vm->number(p);
if ((p = _vm->token(nullptr)) == NULL)
error("Unexpected end of file! %s", fname);
c->_val = _vm->number(p);
c->_spritePtr = nullptr;
}
break;
case kIdSeq:
s = &seq[seqcnt++];
s->_now = atoi(p);
if (s->_now > maxnow)
maxnow = s->_now;
if ((p = _vm->token(nullptr)) == NULL)
break;
s->_next = _vm->number(p);
switch (s->_next) {
case 0xFF:
s->_next = seqcnt;
break;
case 0xFE:
s->_next = seqcnt - 1;
break;
}
if (s->_next > maxnxt)
maxnxt = s->_next;
if ((p = _vm->token(nullptr)) == NULL)
error("Unexpected end of file! %s", fname);
s->_dx = _vm->number(p);
if ((p = _vm->token(nullptr)) == NULL)
error("Unexpected end of file! %s", fname);
s->_dy = _vm->number(p);
if ((p = _vm->token(nullptr)) == NULL)
error("Unexpected end of file! %s", fname);
s->_dz = _vm->number(p);
if ((p = _vm->token(nullptr)) == NULL)
error("Unexpected end of file! %s", fname);
s->_dly = _vm->number(p);
break;
case kIdPhase:
BitmapPtr bmp = new Bitmap(_vm, p);
shplist[shpcnt] = bmp;
if (!shplist[shpcnt]->moveHi())
error("No EMS");
shpcnt++;
break;
}
break;
}
label = kNoByte;
}
if (!shpcnt)
error("No shapes - %s", fname);
} else // no sprite description: try to read immediately from .BMP
shplist[shpcnt++] = new Bitmap (_vm, _file);
if (seq) {
if (maxnow >= shpcnt)
error("Bad PHASE in SEQ %s", fname);
if (maxnxt && maxnxt >= seqcnt)
error("Bad JUMP in SEQ %s", fname);
setSeq(seq);
} else {
setSeq(_stdSeq8);
_seqCnt = (shpcnt < ARRAYSIZE(_stdSeq8)) ? shpcnt : ARRAYSIZE(_stdSeq8);
}
// Set the shape list
BitmapPtr *shapeList = new BitmapPtr[shplist.size()];
for (uint i = 0; i < shplist.size(); ++i)
shapeList[i] = shplist[i];
setShapeList(shapeList, shpcnt);
if (_file[2] == '~') { // FLY-type sprite
Seq *seq = _ext->_seq;
int x = (seq + 1)->_dx, y = (seq + 1)->_dy, z = (seq + 1)->_dz;
// random position
seq->_dx = _vm->newRandom(x + x) - x;
seq->_dy = _vm->newRandom(y + y) - y;
seq->_dz = _vm->newRandom(z + z) - z;
gotoxyz(_pos3D + V3D(seq->_dx, seq->_dy, seq->_dz));
}
return this;
}
Sprite *Sprite::contract() {
SprExt *e = _ext;
if (!e)
return this;
if (_file[2] == '~') { // FLY-type sprite
Seq *seq = _ext->_seq;
// return to middle
gotoxyz(_pos3D - V3D(seq->_dx, seq->_dy, seq->_dz));
seq->_dx = seq->_dy = seq->_dz = 0;
}
if (notify)
notify();
if (e->_name)
delete[] e->_name;
if (e->_shpList) {
for (int i = 0; i < _shpCnt; i++)
e->_shpList[i]->release();
delete[] e->_shpList;
}
if (e->_seq) {
if (e->_seq == _stdSeq8)
_seqCnt = 0;
else
delete[] e->_seq;
}
for (int i = 0; i < kActions; i++)
if (e->_actions[i])
delete[] e->_actions[i];
_ext = nullptr;
return this;
}
void Sprite::backShow(void) {
expand();
show(2);
show(1);
_vm->_spare->dispose(this);
}
void Sprite::step(int nr) {
if (nr >= 0)
_seqPtr = nr;
if (_ext) {
V3D p = _pos3D;
Seq *seq = nullptr;
if (nr < 0)
_seqPtr = _ext->_seq[_seqPtr]._next;
if (_file[2] == '~') { // FLY-type sprite
warning("STUB: Sprite::step() - FLY-type sprite");
} else {
seq = _ext->_seq + _seqPtr;
if (seq->_dz == 127 && seq->_dx != 0) {
_vm->_commandHandlerTurbo->addCommand(kCmdSound, -1, 256 * seq->_dy + seq->_dx, this);
} else {
p._x += seq->_dx;
p._y += seq->_dy;
p._z += seq->_dz;
//if (!_flags._kept)
// gotoxyz(p);
warning("STUB: Sprite::step()");
}
}
if (seq && (seq->_dly >= 0))
_time = seq->_dly;
} else if (_vm->_waitRef && _vm->_waitRef == _ref)
_vm->_waitRef = 0;
}
void Sprite::tick() {
step();
}
void Sprite::makeXlat(uint8 *x) {
if (!_ext)
return;
if (_flags._xlat)
killXlat();
for (BitmapPtr *b = _ext->_shpList; *b; b++)
(*b)->_m = x;
_flags._xlat = true;
}
void Sprite::killXlat() {
if (!_flags._xlat || !_ext)
return;
uint8 *m = (*_ext->_shpList)->_m;
free(m);
for (BitmapPtr *b = _ext->_shpList; *b; b++)
(*b)->_m = NULL;
_flags._xlat = false;
}
void Sprite::gotoxyz(int x, int y, int z) {
gotoxyz(V3D(x, y, z));
}
void Sprite::gotoxyz(void) {
gotoxyz(_pos3D);
}
void Sprite::gotoxyz(V2D pos) {
V2D o = _pos2D;
int ctr = _siz.x >> 1;
int rem = _siz.x - ctr;
byte trim = 0;
if (_ref / 10 == 14) { // HERO
int z = V2D::trunc(_pos3D._z);
ctr = (ctr * V2D::trunc(_vm->_eye->_z) / (V2D::trunc(_vm->_eye->_z) - z));
rem = (rem * V2D::trunc(_vm->_eye->_z) / (V2D::trunc(_vm->_eye->_z) - z));
ctr = (ctr * 3) / 4;
rem = (rem * 3) / 4;
}
if (pos.x - ctr < 0) {
pos.x = ctr;
++trim;
}
if (pos.x + rem > kScrWidth) {
pos.x = kScrWidth - rem;
++trim;
}
_pos2D.x = pos.x;
if (pos.y < -kPanHeight) {
pos.y = -kPanHeight;
++trim;
}
if (pos.y + _siz.y > kWorldHeight) {
pos.y = kWorldHeight - _siz.y;
++trim;
}
_pos2D.y = pos.y;
_flags._trim = (trim != 0);
if (!_follow) {
double m = _vm->_eye->_z / (_pos3D._z - _vm->_eye->_z);
_pos3D._x = (_vm->_eye->_x + V2D::round(_vm->_eye->_x - _pos2D.x) / m);
if (!_constY)
_pos3D._y = (_vm->_eye->_y + V2D::round(_vm->_eye->_y - _pos2D.y) / m);
}
if (_next && _next->_flags._slav)
_next->gotoxyz(_next->_pos2D - o + _pos2D);
if (_flags._shad)
_prev->gotoxyz(_prev->_pos2D - o + _pos2D);
if (_ref == 141 && _pos3D._y >= 5)
warning("Sprite::gotoxyz - asm nop");
}
void Sprite::gotoxyz_(V2D pos) {
_constY++;
gotoxyz(pos);
--_constY;
}
void Sprite::gotoxyz(V3D pos) {
_follow++;
if (pos._z != _pos3D._z)
_flags._zmov = true;
gotoxyz(V2D(_vm, _pos3D = pos));
--_follow;
}
void Sprite::center() {
gotoxyz(kScrWidth >> 1, (kWorldHeight - _siz.y) >> 1, 0);
}
void Sprite::show() {
SprExt *e = _ext;
if (e) {
e->_p0 = e->_p1;
e->_b0 = e->_b1;
e->_p1 = _pos2D;
e->_b1 = shp();
}
if (!_flags._hide)
e->_b1->show(e->_p1.x, e->_p1.y);
}
void Sprite::show(uint16 pg) {
Graphics::Surface *a = _vm->_vga->_page[1];
_vm->_vga->_page[1] = _vm->_vga->_page[pg];
shp()->show(_pos2D.x, _pos2D.y);
_vm->_vga->_page[1] = a;
}
void Sprite::hide() {
SprExt *e = _ext;
if (e->_b0)
e->_b0->hide(e->_p0.x, e->_p0.y);
}
BitmapPtr Sprite::ghost() {
SprExt *e = _ext;
if (!e->_b1)
return nullptr;
BitmapPtr bmp = new Bitmap(_vm, 0, 0, (uint8 *)nullptr);
assert(bmp != nullptr);
bmp->_w = e->_b1->_w;
bmp->_h = e->_b1->_h;
bmp->_b = new HideDesc[bmp->_h];
assert(bmp->_b != nullptr);
memcpy(bmp->_b, e->_b1->_b, sizeof(HideDesc)* bmp->_h);
uint8 *v = new uint8;
*v = (e->_p1.y << 16) + e->_p1.x;
bmp->_v = v;
return bmp;
}
void Sprite::sync(Common::Serializer &s) {
uint16 unused = 0;
s.syncAsUint16LE(unused);
s.syncAsUint16LE(unused); // _ext
s.syncAsUint16LE(_ref);
s.syncAsByte(_scene);
// bitfield in-memory storage is unpredictable, so to avoid
// any issues, pack/unpack everything manually
uint16 flags = 0;
if (s.isLoading()) {
s.syncAsUint16LE(flags);
_flags._hide = flags & 0x0001 ? true : false;
_flags._near = flags & 0x0002 ? true : false;
_flags._drag = flags & 0x0004 ? true : false;
_flags._hold = flags & 0x0008 ? true : false;
//_flags._dummy = flags & 0x0010 ? true : false;
_flags._slav = flags & 0x0020 ? true : false;
//_flags._syst = flags & 0x0040 ? true : false;
_flags._kill = flags & 0x0080 ? true : false;
_flags._xlat = flags & 0x0100 ? true : false;
_flags._port = flags & 0x0200 ? true : false;
_flags._kept = flags & 0x0400 ? true : false;
_flags._east = flags & 0x0800 ? true : false;
_flags._shad = flags & 0x1000 ? true : false;
_flags._back = flags & 0x2000 ? true : false;
//_flags._bDel = flags & 0x4000 ? true : false;
_flags._tran = flags & 0x8000 ? true : false;
} else {
flags = (flags << 1) | _flags._tran;
//flags = (flags << 1) | _flags._bDel;
flags = (flags << 1) | _flags._back;
flags = (flags << 1) | _flags._shad;
flags = (flags << 1) | _flags._east;
flags = (flags << 1) | _flags._kept;
flags = (flags << 1) | _flags._port;
flags = (flags << 1) | _flags._xlat;
flags = (flags << 1) | _flags._kill;
//flags = (flags << 1) | _flags._syst;
flags = (flags << 1) | _flags._slav;
//flags = (flags << 1) | _flags._dummy;
flags = (flags << 1) | _flags._hold;
flags = (flags << 1) | _flags._drag;
flags = (flags << 1) | _flags._near;
flags = (flags << 1) | _flags._hide;
s.syncAsUint16LE(flags);
}
warning("STUB: Sprite::sync() - Flags changed compared to CGE1's Sprite type.");
s.syncAsUint16LE(_pos3D._x);
s.syncAsUint16LE(_pos3D._y);
s.syncAsByte(_pos3D._z);
s.syncAsUint16LE(_time);
s.syncAsSint16LE(_seqPtr);
s.syncAsUint16LE(_shpCnt);
s.syncBytes((byte *)&_file[0], 9);
_file[8] = '\0';
s.syncAsUint16LE(unused); // _prev
s.syncAsUint16LE(unused); // _next
}
Queue::Queue(bool show) : _head(NULL), _tail(NULL) {
}
Queue::~Queue() {
clear();
}
void Queue::clear() {
while (_head) {
Sprite *s = remove(_head);
if (s->_flags._kill)
delete s;
}
}
void Queue::append(Sprite *spr) {
if (spr->_flags._back)
spr->backShow();
else {
spr->expand();
if (_tail) {
spr->_prev = _tail;
_tail->_next = spr;
} else
_head = spr;
_tail = spr;
}
}
void Queue::insert(Sprite *spr, Sprite *nxt) {
if (spr->_flags._back)
spr->backShow();
else {
spr->expand();
if (nxt == _head) {
spr->_next = _head;
_head = spr;
if (!_tail)
_tail = spr;
} else {
spr->_next = nxt;
spr->_prev = nxt->_prev;
if (spr->_prev)
spr->_prev->_next = spr;
}
if (spr->_next)
spr->_next->_prev = spr;
}
}
void Queue::insert(Sprite *spr) {
Sprite *s;
for (s = _head; s; s = s->_next)
if (s->_pos3D._z < spr->_pos3D._z)
break;
if (s)
insert(spr, s);
else
append(spr);
}
template<typename T>
inline bool contains(const Common::List<T> &l, const T &v) {
return (Common::find(l.begin(), l.end(), v) != l.end());
}
Sprite *Queue::remove(Sprite *spr) {
if (spr == _head)
_head = spr->_next;
if (spr == _tail)
_tail = spr->_prev;
if (spr->_next)
spr->_next->_prev = spr->_prev;
if (spr->_prev)
spr->_prev->_next = spr->_next;
spr->_prev = NULL;
spr->_next = NULL;
return spr;
}
Sprite *Queue::locate(int ref) {
for (Sprite *spr = _head; spr; spr = spr->_next) {
if (spr->_ref == ref)
return spr;
}
return NULL;
}
bool Queue::locate(Sprite *spr) {
Sprite *s;
for (s = _head; s; s = s->_next)
if (s == spr)
return true;
return false;
}
Vga::Vga(CGE2Engine *vm) : _frmCnt(0), _msg(NULL), _name(NULL), _setPal(false), _mono(0), _vm(vm) {
_oldColors = NULL;
_newColors = NULL;
_showQ = new Queue(true);
_spareQ = new Queue(false);
_sysPal = new Dac[kPalCount];
for (int idx = 0; idx < 4; idx++) {
_page[idx] = new Graphics::Surface();
_page[idx]->create(kScrWidth, kScrHeight, Graphics::PixelFormat::createFormatCLUT8());
}
/*if (ConfMan.getBool("enable_color_blind"))
_mono = 1;*/
warning("STUB: Vga::Vga()");
_oldColors = (Dac *)malloc(sizeof(Dac) * kPalCount);
_newColors = (Dac *)malloc(sizeof(Dac) * kPalCount);
getColors(_oldColors);
sunset();
setColors();
clear(0);
}
Vga::~Vga() {
_mono = 0;
Common::String buffer = "";
/*
clear(0);
setMode(_oldMode);
setColors();
restoreScreen(_oldScreen);
sunrise(_oldColors);
*/
warning("STUB: Vga::~Vga()");
free(_oldColors);
free(_newColors);
if (_msg)
buffer = Common::String(_msg);
if (_name)
buffer = buffer + " [" + _name + "]";
debugN("%s", buffer.c_str());
delete _showQ;
delete _spareQ;
delete[] _sysPal;
for (int idx = 0; idx < 4; idx++) {
_page[idx]->free();
delete _page[idx];
}
}
void Vga::waitVR() {
// Since some of the game parts rely on using vertical sync as a delay mechanism,
// we're introducing a short delay to simulate it
g_system->delayMillis(5);
}
void Vga::getColors(Dac *tab) {
byte palData[kPalSize];
g_system->getPaletteManager()->grabPalette(palData, 0, kPalCount);
palToDac(palData, tab);
}
uint8 Vga::closest(Dac *pal, const uint8 colR, const uint8 colG, const uint8 colB) {
#define f(col, lum) ((((uint16)(col)) << 8) / lum)
uint16 i, dif = 0xFFFF, found = 0;
uint16 L = colR + colG + colB;
if (!L)
L++;
uint16 R = f(colR, L), G = f(colG, L), B = f(colB, 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
}
uint8 *Vga::glass(Dac *pal, const uint8 colR, const uint8 colG, const uint8 colB) {
uint8 *x = (uint8 *)malloc(256);
if (x) {
uint16 i;
for (i = 0; i < 256; i++) {
x[i] = closest(pal, ((uint16)(pal[i]._r) * colR) / 255,
((uint16)(pal[i]._g) * colG) / 255,
((uint16)(pal[i]._b) * colB) / 255);
}
}
return x;
}
void Vga::palToDac(const byte *palData, Dac *tab) {
const byte *colP = palData;
for (int idx = 0; idx < kPalCount; idx++, colP += 3) {
tab[idx]._r = *colP >> 2;
tab[idx]._g = *(colP + 1) >> 2;
tab[idx]._b = *(colP + 2) >> 2;
}
}
void Vga::dacToPal(const Dac *tab, byte *palData) {
for (int idx = 0; idx < kPalCount; idx++, palData += 3) {
*palData = tab[idx]._r << 2;
*(palData + 1) = tab[idx]._g << 2;
*(palData + 2) = tab[idx]._b << 2;
}
}
void Vga::setColors(Dac *tab, int lum) {
Dac *palP = tab, *destP = _newColors;
for (int idx = 0; idx < kPalCount; idx++, palP++, destP++) {
destP->_r = (palP->_r * lum) >> 6;
destP->_g = (palP->_g * lum) >> 6;
destP->_b = (palP->_b * lum) >> 6;
}
if (_mono) {
destP = _newColors;
for (int idx = 0; idx < kPalCount; idx++, destP++) {
// Form a greyscalce color from 30% R, 59% G, 11% B
uint8 intensity = (((int)destP->_r * 77) + ((int)destP->_g * 151) + ((int)destP->_b * 28)) >> 8;
destP->_r = intensity;
destP->_g = intensity;
destP->_b = intensity;
}
}
_setPal = true;
}
void Vga::setColors() {
memset(_newColors, 0, kPalSize);
updateColors();
}
void Vga::sunrise(Dac *tab) {
for (int i = 0; i <= 64; i += kFadeStep) {
setColors(tab, i);
waitVR();
updateColors();
}
}
void Vga::sunset() {
Dac tab[256];
getColors(tab);
for (int i = 64; i >= 0; i -= kFadeStep) {
setColors(tab, i);
waitVR();
updateColors();
}
}
void Vga::show() {
_vm->_infoLine->update();
for (Sprite *spr = _showQ->first(); spr; spr = spr->_next) {
spr->show();
}
//_vm->_mouse->show();
update();
for (Sprite *spr = _showQ->first(); spr; spr = spr->_next) {
spr->hide();
if (spr->_flags._zmov) {
Sprite *s = nullptr;
Sprite *p = spr->_prev;
Sprite *n = spr->_next;
if (spr->_flags._shad) {
s = p;
p = s->_prev;
}
if ((p && spr->_pos3D._z > p->_pos3D._z) ||
(n && spr->_pos3D._z < n->_pos3D._z)) {
_showQ->insert(_showQ->remove(spr));
if (s) {
//s->gotoxyz(V3D(s->_pos3D._x, s->_pos3D._y, spr->_pos3D._z));
//_showQ->insert(_showQ->remove(s), spr);
// These two lines are also commented out in the original.
}
}
spr->_flags._zmov = false;
}
}
//_vm->_mouse->hide();
warning("STUB: Vga::show() - Mouse handling is missing!");
}
void Vga::updateColors() {
byte palData[kPalSize];
dacToPal(_newColors, palData);
g_system->getPaletteManager()->setPalette(palData, 0, 256);