Initial commit

engines/cge2/map.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/>.
+ *
+ */
+
+/*
+ * This code is based on original Sfinx source code
+ * Copyright (c) 1994-1997 Janusz B. Wisniewski and L.K. Avalon
+ */
+
+#include "cge2/map.h"
+
+namespace CGE2 {
+
+Map::Map(CGE2Engine *vm) :_vm(vm) {}
+
+Map::~Map() {
+	_container.clear();
+}
+
+void Map::clear() {
+	_container.clear();
+}
+
+void Map::load(int scene) {
+	clear();
+
+	const char *fname = "%.2d.MAP";
+	Common::String fileName = Common::String::format(fname, scene);
+	if (!_vm->_resman->exist(fileName.c_str()))
+		return;
+
+	EncryptedStream file(_vm->_resman, fileName.c_str());
+
+	Common::String line;
+	for (line = file.readLine(); !file.eos(); line = file.readLine()) {
+		if (line.empty())
+			continue;
+
+		char tmpStr[kLineMax + 1];
+		Common::strlcpy(tmpStr, line.c_str(), sizeof(tmpStr));
+
+		char *currPos = tmpStr;
+		int x = nextNum(currPos);
+		while (true) {
+			int y = nextNum(nullptr);
+			_container.push_back(V2D(_vm, convertCoord(x), convertCoord(y)));
+			x = nextNum(nullptr);
+			if (x == -1) // We stop if there are no more data left to process in the current line.
+				break;
+		}
+	}
+}
+
+int Map::nextNum(char *currPos) {
+	currPos = strtok(currPos, " (),");
+	if (currPos == nullptr)
+		return -1;
+	int num = atoi(currPos);
+	return num;
+}
+
+int Map::convertCoord(int coord) {
+	return (coord + (kMapGrid >> 1)) & kMapMask;
+}
+
+int Map::size() {
+	return _container.size();
+}
+
+V2D *Map::getCoord(int idx) {
+	return &_container[idx];
+}
+
+} // End of namespace CGE2