Initial commit

engines/mm/mm1/game/encounter.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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "mm/mm1/game/encounter.h"
+#include "mm/mm1/data/monsters.h"
+#include "mm/mm1/maps/maps.h"
+#include "mm/mm1/events.h"
+#include "mm/mm1/globals.h"
+#include "mm/mm1/mm1.h"
+
+namespace MM {
+namespace MM1 {
+namespace Game {
+
+void Encounter::execute() {
+	if (!g_globals->_encountersOn)
+		return;
+
+	Maps::Map &map = *g_maps->_currentMap;
+	int comp, maxRand, maxVal;
+	const Monster *monsterP;
+	_bribeFleeCtr = _bribeAlignmentCtr = 0;
+	_alignmentsChanged = 0;
+
+	// In manual mode, the scripts have already set up
+	// a list of monsters to use
+	if (!_manual) {
+		_monsterSummaries.clear();
+		_levelIndex = 0;
+	}
+
+	_totalLevels = _highestLevel = 0;
+	_levelOffset = _monsterImgNum = _maxLevelForImg = _fleeThreshold = 0;
+
+	for (uint i = 0; i < g_globals->_party.size(); ++i) {
+		const Character &c = g_globals->_party[i];
+		_highestLevel = MAX(_highestLevel, (int)c._level._current);
+
+		if (!(c._condition & (BAD_CONDITION | PARALYZED | UNCONSCIOUS)))
+			_totalLevels = MIN(_totalLevels + c._level._current, 255);
+	}
+
+	_totalLevels /= 2;
+	_highestLevel /= 2;
+
+	bool firstLoop = !_manual;
+	_manual = false;
+
+	while (firstLoop || _levelIndex < _totalLevels) {
+		randomAdjust();
+		firstLoop = false;
+
+		maxRand = _levelOffset + _highestLevel;
+		if (maxRand >= 2) {
+			int highestRand = map[Maps::MAP_33];
+			maxRand = MIN(maxRand, highestRand);
+			comp = getRandomNumber(maxRand);
+		} else {
+			comp = 1;
+		}
+
+		maxVal = map[Maps::MAP_47];
+		if (comp < maxVal) {
+			comp = MIN(maxVal, 10);
+		}
+
+		assert(_monsterSummaries.size() < MAX_COMBAT_MONSTERS);
+		_monsterNum = getRandomNumber(16);
+		_monsterSummaries.push_back(MonsterSummary(_monsterNum, comp));
+
+		_monsterLevel = comp;
+		_levelIndex += comp;
+
+		if (_monsterSummaries.size() < MAX_COMBAT_MONSTERS) {
+			if (_monsterSummaries.size() >= map[Maps::MAP_MAX_MONSTERS])
+				goto exit_loop;
+
+			monsterP = getMonster();
+			maxVal = getRandomNumber(monsterP->_count);
+
+			for (int i = 0; i < maxVal; ++i) {
+				assert(!_monsterSummaries.empty());
+				_monsterSummaries.push_back(_monsterSummaries.back());
+				_levelIndex += _monsterSummaries.back()._level;
+
+				if (_monsterSummaries.size() >= MAX_COMBAT_MONSTERS)
+					goto exit_loop;
+
+				if (_monsterSummaries.size() >= map[Maps::MAP_MAX_MONSTERS])
+					goto exit_loop;
+			}
+		} else {
+			goto exit_loop;
+		}
+	}
+
+exit_loop:
+	_monsterList.clear();
+
+	for (uint i = 0; i < _monsterSummaries.size(); ++i) {
+		maxVal = (_monsterSummaries[i]._level - 1) * 16 +
+			_monsterSummaries[i]._num;
+
+		if (_monsterSummaries[i]._level < 1 || _monsterSummaries[i]._level > 12
+				|| maxVal >= 196) {
+			_monsterSummaries[i]._level = 10;
+			_monsterSummaries[i]._num = getRandomNumber(15);
+		}
+
+		// Add monster details to list
+		_monsterLevel = _monsterSummaries[i]._level;
+		const Monster &srcMons = (*g_globals->_monsters)[_monsterSummaries[i]._num];
+		_monsterList.push_back(srcMons);
+		Monster &mons = _monsterList.back();
+		mons._level = _monsterSummaries[i]._level;
+
+		if (_monsterLevel > _maxLevelForImg) {
+			_maxLevelForImg = _monsterLevel;
+			_fleeThreshold = mons._fleeThreshold;
+			_monsterImgNum = mons._imgNum;
+		}
+	}
+
+	g_events->addView("Encounter");
+}
+
+void Encounter::randomAdjust() {
+	int rval = getRandomNumber(100);
+	_levelOffset = 0;
+
+	if (rval < 51) {
+	} else if (rval < 71)
+		_levelOffset += 1;
+	else if (rval < 86)
+		_levelOffset += 2;
+	else if (rval < 96)
+		_levelOffset += 3;
+	else
+		_levelOffset += 4;
+}
+
+const Monster *Encounter::getMonster() {
+	assert(_monsterNum > 0 && _monsterLevel > 0);
+	return &(*g_globals->_monsters)[_monsterNum + ((_monsterLevel - 1) * 16)];
+}
+
+bool Encounter::checkSurroundParty() const {
+	return getRandomNumber(100) > _fleeThreshold;
+}
+
+void Encounter::changeCharAlignment(Alignment align) {
+	if (g_globals->_currCharacter->_alignment != align) {
+		g_globals->_currCharacter->_alignment = align;
+		++_alignmentsChanged;
+	}
+}
+
+void Encounter::clearMonsters() {
+	_monsterSummaries.clear();
+}
+
+void Encounter::addMonster(byte id, byte level) {
+	_monsterSummaries.push_back(MonsterSummary(id, level));
+}
+
+} // namespace Game
+} // namespace MM1
+} // namespace MM