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https://github.com/libretro/scummvm.git
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606 lines
15 KiB
C++
606 lines
15 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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/*
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* This code is based on original Sfinx source code
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* Copyright (c) 1994-1997 Janus B. Wisniewski and L.K. Avalon
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*/
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#include "cge2/hero.h"
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#include "cge2/text.h"
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#include "cge2/map.h"
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namespace CGE2 {
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Hero::Hero(CGE2Engine *vm)
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: Sprite(vm), _contact(nullptr), _dir(kNoDir),
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_curDim(0), _tracePtr(-1), _ignoreMap(false) {
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}
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Sprite *Hero::expand() { // It's very similar to Sprite's expand, but doesn't bother with "labels" for example. TODO: Try to unify the two later!
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if (_ext)
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return this;
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char *text = _vm->_text->getText(_ref + 100);
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char fname[kMaxPath];
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_vm->mergeExt(fname, _file, kSprExt);
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_ext = new SprExt(_vm);
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if (_ext == nullptr)
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error("No core %s", fname);
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if (*_file) {
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int cnt[kActions];
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Seq *seq;
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int section = kIdPhase;
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for (int i = 0; i < kDimMax; i++) {
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_dim[i] = new Bitmap[_shpCnt];
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for (int j = 0; j < _shpCnt; j++)
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_dim[i][j].setVM(_vm);
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}
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if (_seqCnt) {
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seq = new Seq[_seqCnt];
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if (seq == nullptr)
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error("No core %s", fname);
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} else
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seq = nullptr;
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for (int i = 0; i < kActions; i++)
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cnt[i] = 0;
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for (int i = 0; i < kActions; i++) {
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byte n = _actionCtrl[i]._cnt;
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if (n) {
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_ext->_actions[i] = new CommandHandler::Command[n];
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if (_ext->_actions[i] == nullptr)
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error("No core %s", fname);
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} else
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_ext->_actions[i] = nullptr;
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}
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if (_vm->_resman->exist(fname)) { // sprite description file exist
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EncryptedStream sprf(_vm, fname);
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if (sprf.err())
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error("Bad SPR [%s]", fname);
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ID id;
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Common::String line;
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char tmpStr[kLineMax + 1];
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int shpcnt = 0;
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int seqcnt = 0;
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int maxnow = 0;
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int maxnxt = 0;
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for (line = sprf.readLine(); !sprf.eos(); line = sprf.readLine()) {
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if (line.empty())
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continue;
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Common::strlcpy(tmpStr, line.c_str(), sizeof(tmpStr));
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char *p = _vm->token(tmpStr);
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id = _vm->ident(p);
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switch (id) {
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case kIdNear:
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case kIdMTake:
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case kIdFTake:
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case kIdPhase:
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case kIdSeq:
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section = id;
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break;
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case kIdName:
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Common::strlcpy(tmpStr, line.c_str(), sizeof(tmpStr));
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for (p = tmpStr; *p != '='; p++); // We search for the =
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setName(_vm->tail(p));
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break;
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default:
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if (id >= kIdNear)
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break;
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Seq *s;
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switch (section) {
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case kIdNear:
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case kIdMTake:
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case kIdFTake:
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id = (ID)_vm->_commandHandler->getComId(p);
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if (_actionCtrl[section]._cnt) {
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CommandHandler::Command *c = &_ext->_actions[section][cnt[section]++];
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c->_commandType = CommandType(id);
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if ((p = _vm->token(nullptr)) == NULL)
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error("Unexpected end of file! %s", fname);
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c->_ref = _vm->number(p);
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if ((p = _vm->token(nullptr)) == NULL)
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error("Unexpected end of file! %s", fname);
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c->_val = _vm->number(p);
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c->_spritePtr = nullptr;
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}
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break;
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case kIdSeq:
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s = &seq[seqcnt++];
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s->_now = atoi(p);
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if (s->_now > maxnow)
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maxnow = s->_now;
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if ((p = _vm->token(nullptr)) == NULL)
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break;
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s->_next = _vm->number(p);
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switch (s->_next) {
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case 0xFF:
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s->_next = seqcnt;
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break;
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case 0xFE:
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s->_next = seqcnt - 1;
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break;
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}
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if (s->_next > maxnxt)
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maxnxt = s->_next;
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if ((p = _vm->token(nullptr)) == NULL)
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error("Unexpected end of file! %s", fname);
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s->_dx = _vm->number(p);
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if ((p = _vm->token(nullptr)) == NULL)
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error("Unexpected end of file! %s", fname);
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s->_dy = _vm->number(p);
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if ((p = _vm->token(nullptr)) == NULL)
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error("Unexpected end of file! %s", fname);
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s->_dz = _vm->number(p);
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if ((p = _vm->token(nullptr)) == NULL)
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error("Unexpected end of file! %s", fname);
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s->_dly = _vm->number(p);
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break;
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case kIdPhase:
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for (int i = 0; i < kDimMax; i++) {
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char *q = p;
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q[1] = '0' + i;
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Bitmap b(_vm, q);
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if (!b.moveHi())
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error("No EMS %s", q);
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_dim[i][shpcnt] = b;
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if (!shpcnt)
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_hig[i] = b._h;
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}
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++shpcnt;
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break;
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}
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}
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}
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if (seq) {
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if (maxnow >= shpcnt)
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error("Bad PHASE in SEQ %s", fname);
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if (maxnxt >= seqcnt)
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error("Bad JUMP in SEQ %s", fname);
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setSeq(seq);
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} else
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setSeq(_stdSeq8);
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setShapeList(_dim[0], shpcnt);
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}
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}
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_reachStart = atoi(_vm->token(text));
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_reachCycle = atoi(_vm->token(nullptr));
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_sayStart = atoi(_vm->token(nullptr));
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_funStart = atoi(_vm->token(nullptr));
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_funDel = _funDel0 = (72 / _ext->_seq[0]._dly) * atoi(_vm->token(nullptr));
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int i = stepSize() / 2;
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_maxDist = sqrt(double(i * i * 2));
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setCurrent();
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return this;
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}
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void Hero::setCurrent() {
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FXP m = _vm->_eye->_z / (_pos3D._z - _vm->_eye->_z);
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FXP tmp = m * _siz.y;
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int h = -(tmp.trunc());
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int i = 0;
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for (; i < kDimMax; i++) {
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if (h >= (_hig[i] + _hig[i + 1]) / 2)
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break;
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}
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_ext->_shpList = _dim[_curDim = i];
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}
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void Hero::hStep() {
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if (!_ignoreMap && _ext) {
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Seq *seq = _ext->_seq;
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int ptr = seq[_seqPtr]._next;
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seq += ptr;
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if (seq->_dx | seq->_dz) {
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V2D p0(_vm, _pos3D._x.round(), _pos3D._z.round());
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V2D p1(_vm, p0.x + seq->_dx, p0.y + seq->_dz);
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if (mapCross(p0, p1)) {
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park();
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return;
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}
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}
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}
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step();
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}
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Sprite *Hero::setContact() {
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Sprite *spr;
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int md = _maxDist << 1;
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for (spr = _vm->_vga->_showQ->first(); spr; spr = spr->_next) {
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if (spr->_actionCtrl[kNear]._cnt && (spr->_ref & 255) != 255) {
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if (distance(spr) <= md) {
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if (spr == _contact)
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return nullptr;
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else
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break;
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}
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}
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}
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return (_contact = spr);
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}
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void Hero::tick() {
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int z = _pos3D._z.trunc();
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//-- maybe not exactly wid/2, but wid/3 ?
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int d = ((_siz.x / 2) * _vm->_eye->_z.trunc()) / (_vm->_eye->_z.trunc() - z);
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if (_dir != kNoDir) { // just walking...
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if (_flags._hold || _tracePtr < 0)
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park();
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else {
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Sprite *spr = setContact();
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if (spr)
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_vm->feedSnail(spr, kNear, this);
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}
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}
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//---------------------------------------------------------------
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if (_tracePtr >= 0) {
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if (distance(_trace[_tracePtr]) <= _maxDist)
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--_tracePtr;
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if (_tracePtr < 0)
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park();
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else {
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int stp = stepSize() / 2;
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int dx = _trace[_tracePtr]._x.round() - _pos3D._x.round();
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int dz = _trace[_tracePtr]._z.round() - _pos3D._z.round();
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Dir dir = (dx > stp) ? kEE : ((-dx > stp) ? kWW : ((dz > stp) ? kNN : kSS));
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turn(dir);
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}
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}
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//---------------------------------------------------------------
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hStep();
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setCurrent();
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switch (_dir) {
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case kSS:
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if (_pos3D._z < stepSize() / 2)
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park();
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break;
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case kWW:
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if (_pos2D.x <= d)
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park();
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break;
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case kNN:
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if (_pos3D._z > kScrDepth)
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park();
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break;
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case kEE:
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if (_pos2D.x >= kScrWidth - 1 - d)
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park();
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break;
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}
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if (_flags._trim)
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gotoxyz_(_pos2D);
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if (_pos3D._z.trunc() != z)
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_flags._zmov = true;
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if (--_funDel == 0)
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fun();
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}
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int Hero::distance(V3D pos) {
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V3D di = _pos3D - pos;
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int x = di._x.round();
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int z = di._z.round();
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return ((int)sqrt((long double)x * x + z * z));
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}
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int Hero::distance(Sprite *spr) {
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V3D pos = spr->_pos3D;
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int mdx = (spr->_siz.x >> 1) + (_siz.x >> 1);
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int dx = (_pos3D._x - spr->_pos3D._x).round();
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if (dx < 0) {
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mdx = -mdx;
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if (dx > mdx)
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pos._x = _pos3D._x;
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else
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pos._x += mdx;
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} else {
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if (dx < mdx)
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pos._x = _pos3D._x;
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else
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pos._x += mdx;
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}
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return distance(pos);
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}
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void Hero::turn(Dir d) {
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Dir dir = (_dir == kNoDir) ? kSS : _dir;
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if (d != _dir) {
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step((d == dir) ? 57 : (8 + 4 * dir + d));
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_dir = d;
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}
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resetFun();
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}
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void Hero::park() {
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if (_dir != kNoDir) {
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step(8 + 5 * _dir);
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_dir = kNoDir;
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_trace[0] = _pos3D;
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_tracePtr = -1;
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setCurrent();
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_flags._zmov = true;
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}
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_ignoreMap = false;
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if (_time == 0)
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++_time;
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}
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bool Hero::lower(Sprite * spr) {
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return (spr->_pos3D._y + (spr->_siz.y >> 2) < 10);
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}
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void Hero::reach(int mode) {
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Sprite *spr = nullptr;
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if (mode >= 4) {
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spr = _vm->_vga->_showQ->locate(mode);
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if (spr) {
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mode = !spr->_flags._east; // 0-1
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if (lower(spr)) // 2-3
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mode += 2;
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}
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}
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// note: insert SNAIL commands in reverse order
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_vm->_commandHandler->insertCommand(kCmdPause, -1, 24, nullptr);
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_vm->_commandHandler->insertCommand(kCmdSeq, -1, _reachStart + _reachCycle * mode, this);
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if (spr) {
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_vm->_commandHandler->insertCommand(kCmdWait, -1, -1, this);
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_vm->_commandHandler->insertCommand(kCmdWalk, -1, spr->_ref, this);
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}
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// sequence is not finished,
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// now it is just at sprite appear (disappear) point
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resetFun();
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}
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void Hero::fun() {
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if (_vm->_commandHandler->idle()) {
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park();
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_vm->_commandHandler->addCommand(kCmdWait, -1, -1, this);
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_vm->_commandHandler->addCommand(kCmdSeq, -1, _funStart, this);
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}
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_funDel = _funDel0 >> 2;
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}
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int Hero::len(V2D v) {
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return sqrt(double(v.x * v.x + v.y * v.y));
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}
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bool Hero::findWay(){
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V2D p0(_vm, _pos3D._x.round(), _pos3D._z.round());
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V2D p1(_vm, _trace[_tracePtr]._x.round(), _trace[_tracePtr]._z.round());
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bool pvOk;
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bool phOk;
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V2D ph(_vm, p1.x, p0.y);
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V2D pv(_vm, p0.x, p1.y);
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pvOk = (!mapCross(p0, pv) && !mapCross(pv, p1));
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phOk = (!mapCross(p0, ph) && !mapCross(ph, p1));
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int md = (_maxDist >> 1);
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if (pvOk && (len(ph - p0) <= md || len(p1 - ph) <= md))
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return true;
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if (phOk && (len(pv - p0) <= md || len(p1 - pv) <= md))
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return true;
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if (pvOk) {
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_trace[++_tracePtr] = V3D(pv.x, 0, pv.y);
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return true;
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}
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if (phOk) {
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_trace[++_tracePtr] = V3D(ph.x, 0, ph.y);
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return true;
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}
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return false;
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}
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int Hero::snap(int p, int q, int grid) {
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int d = q - p;
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d = ((d >= 0) ? d : -d) % grid;
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if (d > (grid >> 1))
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d -= grid;
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return (q >= p) ? (q - d) : (q + d);
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}
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void Hero::walkTo(V3D pos) {
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if (distance(pos) <= _maxDist)
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return;
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int stp = stepSize();
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pos._x = snap(_pos3D._x.round(), pos._x.round(), stp);
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pos._y = 0;
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pos._z = snap(_pos3D._z.round(), pos._z.round(), stp);
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V2D p0(_vm, _pos3D._x.round(), _pos3D._z.round());
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V2D p1(_vm, pos._x.round(), pos._z.round());
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resetFun();
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int cnt = mapCross(p0, p1);
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if ((cnt & 1) == 0) { // even == way exists
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_trace[_tracePtr = 0] = pos;
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if (!findWay()) {
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int i;
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++_tracePtr;
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for (i = stp; i < kMaxTry; i += stp) {
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_trace[_tracePtr] = pos + V3D(i, 0, 0);
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if (!mapCross(_trace[_tracePtr - 1], _trace[_tracePtr]) && findWay())
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break;
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_trace[_tracePtr] = pos + V3D(-i, 0, 0);
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if (!mapCross(_trace[_tracePtr - 1], _trace[_tracePtr]) && findWay())
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break;
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_trace[_tracePtr] = pos + V3D(0, 0, i);
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if (!mapCross(_trace[_tracePtr - 1], _trace[_tracePtr]) && findWay())
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break;
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_trace[_tracePtr] = pos + V3D(0, 0, -i);
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if (!mapCross(_trace[_tracePtr - 1], _trace[_tracePtr]) && findWay())
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break;
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}
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if (i >= kMaxTry)
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_trace[_tracePtr] = V3D(_pos3D._x, 0, pos._z); // not found
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}
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}
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}
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void Hero::walkTo(Sprite *spr) {
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int mdx = _siz.x >> 1;
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int stp = (stepSize() + 1) / 2;
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if (!spr->_flags._east)
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mdx = -mdx;
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walkTo(spr->_pos3D + V3D(mdx, 0, (!spr->_flags._frnt || spr->_pos3D._z < 8) ? stp : -stp));
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}
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V3D Hero::screenToGround(V2D pos) {
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FXP z = _vm->_eye->_z + (_vm->_eye->_y * _vm->_eye->_z) / (FXP(pos.y) - _vm->_eye->_y);
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FXP x = _vm->_eye->_x - ((FXP(pos.x) - _vm->_eye->_x) * (z - _vm->_eye->_z)) / _vm->_eye->_z;
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return V3D(x.round(), 0, z.round());
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}
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int Hero::cross(const V2D &a, const V2D &b) {
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int x = _pos3D._x.trunc();
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int z = _pos3D._z.trunc();
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int r = ((_siz.x / 3) * _vm->_eye->_z.trunc()) / (_vm->_eye->_z.trunc()- z);
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return _vm->cross(a, b, V2D(_vm, x - r, z), V2D(_vm, x + r, z)) << 1;
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}
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bool CGE2Engine::cross(const V2D &a, const V2D &b, const V2D &c, const V2D &d) {
|
|
if (contain(a, b, c))
|
|
return true;
|
|
if (contain(a, b, d))
|
|
return true;
|
|
if (contain(c, d, a))
|
|
return true;
|
|
if (contain(c, d, b))
|
|
return true;
|
|
return sgn(det(a, b, c)) != sgn(det(a, b, d)) && sgn(det(c, d, a)) != sgn(det(c, d, b));
|
|
}
|
|
|
|
bool CGE2Engine::contain(const V2D &a, const V2D &b, const V2D &p) {
|
|
if (det(a, b, p))
|
|
return false;
|
|
return ((long)(a.x - p.x) * (p.x - b.x) >= 0 && (long)(a.y - p.y) * (p.y - b.y) >= 0);
|
|
}
|
|
|
|
long CGE2Engine::det(const V2D &a, const V2D &b, const V2D &c) {
|
|
long n = ((long)a.x * b.y + (long)b.x * c.y + (long)c.x*a.y) - ((long)c.x*b.y + (long)b.x*a.y + (long)a.x*c.y);
|
|
return n;
|
|
}
|
|
|
|
int CGE2Engine::sgn(long n) {
|
|
return (n == 0) ? 0 : ((n > 0) ? 1 : -1);
|
|
}
|
|
|
|
int Hero::mapCross(const V2D &a, const V2D &b) {
|
|
Hero *o = other();
|
|
int n = (o->_scene == _scene) ? o->cross(a, b) : 0;
|
|
if (!_ignoreMap)
|
|
n += _vm->mapCross(a, b);
|
|
return n;
|
|
}
|
|
|
|
int Hero::mapCross(const V3D &a, const V3D &b) {
|
|
return mapCross(V2D(_vm, a._x.round(), a._z.round()), V2D(_vm, b._x.round(), b._z.round()));
|
|
}
|
|
|
|
int CGE2Engine::mapCross(const V2D &a, const V2D &b) {
|
|
int cnt = 0;
|
|
V2D *n0 = nullptr;
|
|
V2D *p = nullptr;
|
|
for (int i = 0; i < _map->size(); i++) {
|
|
V2D *n = _map->getCoord(i);
|
|
if (p) {
|
|
if (cross(a, b, *n0, *n))
|
|
++cnt;
|
|
|
|
if (*n == *p)
|
|
p = nullptr;
|
|
} else {
|
|
p = n;
|
|
}
|
|
n0 = n;
|
|
}
|
|
return cnt;
|
|
}
|
|
|
|
void Hero::setScene(int c) {
|
|
Sprite::setScene(c);
|
|
resetFun();
|
|
}
|
|
|
|
void Hero::operator++() {
|
|
if (_curDim > 0)
|
|
_ext->_shpList = _dim[--_curDim];
|
|
}
|
|
|
|
void Hero::operator--() {
|
|
if (_curDim < kDimMax - 1)
|
|
_ext->_shpList = _dim[++_curDim];
|
|
}
|
|
|
|
bool Sprite::works(Sprite *spr) {
|
|
if (!spr || !spr->_ext)
|
|
return false;
|
|
|
|
bool ok = false;
|
|
|
|
Action a = _vm->_heroTab[_vm->_sex]->_ptr->action();
|
|
CommandHandler::Command *ct = spr->_ext->_actions[a];
|
|
if (ct) {
|
|
int i = spr->_actionCtrl[a]._ptr;
|
|
int n = spr->_actionCtrl[a]._cnt;
|
|
while (i < n && !ok) {
|
|
CommandHandler::Command *c = &ct[i++];
|
|
if (c->_commandType != kCmdUse)
|
|
break;
|
|
ok = (c->_ref == _ref);
|
|
if (c->_val > 255) {
|
|
if (ok) {
|
|
int p = spr->labVal(a, c->_val >> 8);
|
|
if (p >= 0)
|
|
spr->_actionCtrl[a]._ptr = p;
|
|
else
|
|
ok = false;
|
|
}
|
|
} else {
|
|
if (c->_val && c->_val != _vm->_now)
|
|
ok = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return ok;
|
|
}
|
|
|
|
} // End of namespace CGE2
|