Initial commit

engines/mm/mm1/data/trap.cpp

@@ -0,0 +1,141 @@
+/* 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/data/trap.h"
+#include "mm/mm1/globals.h"
+
+namespace MM {
+namespace MM1 {
+
+int8 TrapData::RESISTANCE_INDEXES[11] = {
+	-1, -1, -1, -1, -1, -1,
+	1,		// Fire
+	3,		// Electricity
+	4,		// Acid
+	2,		// Cold
+	0		// Magic
+};
+byte TrapData::CONDITIONS1[11] = {
+	16, 32, 16, 16, 2, 1, 2, 32, 2, 2, 2
+};
+byte TrapData::CONDITIONS2[11] = {
+	16, 16, 16, 32, 2, 16, 64, 64, 2, 32, 32
+};
+byte TrapData::CONDITIONS3[11] = {
+	64, 64, 64, 64, 64, 192, 192, 192, 255, 64, 224
+};
+byte TrapData::DAMAGE_TYPE[7] = {
+	3, 0, 2, 5, 4, 1, 6
+};
+
+
+void TrapData::trap() {
+	_trapType = getRandomNumber(11) - 1;
+
+	int maxVal = 4;
+	for (int i = (int)g_globals->_treasure._container - 1; i > 0; i -= 2) {
+		maxVal <<= 1;
+	}
+	maxVal += getRandomNumber(maxVal);
+
+	_resistanceIndex = RESISTANCE_INDEXES[_trapType];
+
+	if (g_globals->_treasure._container < WOODEN_BOX)
+		_condition = 0;
+	else if (g_globals->_treasure._container < SILVER_BOX)
+		_condition = CONDITIONS1[_trapType];
+	else if (g_globals->_treasure._container < BLACK_BOX)
+		_condition = CONDITIONS2[_trapType];
+	else
+		_condition = CONDITIONS3[_trapType];
+
+	int idx = _trapType;
+	if (idx >= 7)
+		idx -= 5;
+	else if (_condition == POISONED)
+		idx = 0;
+	else if (_condition == PARALYZED)
+		idx = 1;
+	else
+		idx = -1;
+
+	int val4 = 0;
+	_reduced = 0;
+	if (idx >= 0) {
+		int spellCount = g_globals->_activeSpells._arr[DAMAGE_TYPE[idx]];
+		if (spellCount > 0 && getRandomNumber(100) < spellCount) {
+			_reduced = val4 = 1;
+			maxVal = 1;
+		}
+	}
+
+	for (uint i = 0; i < g_globals->_party.size(); ++i, _reduced = val4) {
+		_hpInitial = maxVal;
+		damageChar(i);
+	}
+}
+
+void TrapData::damageChar(uint partyIndex) {
+	Character &c = g_globals->_party[partyIndex];
+	if (&c != g_globals->_currCharacter)
+		_hpInitial >>= 1;
+
+	if (_resistanceIndex != -1 &&
+			c._resistances._arr[_resistanceIndex] != 0 &&
+			getRandomNumber(100) < c._resistances._arr[_resistanceIndex]) {
+		_hpInitial >>= 1;
+		++_reduced;
+	}
+
+	int luckLevel1 = c._luck + c._level;
+	int luckLevel2 = getRandomNumber(luckLevel1 + 20);
+
+	if (getRandomNumber(luckLevel2) < luckLevel1) {
+		_hpInitial >>= 1;
+		++_reduced;
+	}
+
+	if (c._condition & BAD_CONDITION) {
+		c._hpCurrent = 0;
+
+	} else if (c._condition & UNCONSCIOUS) {
+		c._condition = BAD_CONDITION | DEAD;
+		c._hpCurrent = 0;
+
+	} else {
+		c._hpCurrent = MAX((int)c._hpCurrent - _hpInitial, 0);
+
+		if (c._hpCurrent == 0) {
+			c._condition |= UNCONSCIOUS;
+
+		} else if (!_reduced && _condition &&
+				getRandomNumber(luckLevel1 + 20) >= luckLevel1) {
+			if (_condition >= UNCONSCIOUS)
+				c._hpCurrent = 0;
+
+			if (!(c._condition & BAD_CONDITION))
+				c._condition = _condition;
+		}
+	}
+}
+
+} // namespace MM1
+} // namespace MM