Initial commit

engines/m4/adv_r/adv_been.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 "m4/adv_r/adv_been.h"
+#include "m4/core/errors.h"
+#include "m4/mem/memman.h"
+#include "m4/vars.h"
+
+namespace M4 {
+
+#define TOTAL_SCENES 180
+
+bool player_been_init(int16 num_scenes) {
+	assert(num_scenes == TOTAL_SCENES);
+	_G(scene_list).table = (int16 *)mem_alloc(sizeof(int16) * num_scenes, "been_scenes");
+
+	if (!_G(scene_list).table)
+		error_show(FL, 'OOM!', "player_been_init");
+
+	_G(scene_list).total_scenes = num_scenes;
+	player_reset_been();
+
+	return true;
+}
+
+void player_been_shutdown() {
+	mem_free(_G(scene_list).table);
+}
+
+void player_reset_been() {
+	Common::fill(_G(scene_list).table, _G(scene_list).table + TOTAL_SCENES, 180);
+	_G(scene_list).total_scenes = TOTAL_SCENES;
+	_G(scene_list).tail = 0;
+}
+
+void player_been_sync(Common::Serializer &s) {
+	// Handle number of scenes
+	int count = _G(scene_list).total_scenes;
+	s.syncAsUint32LE(count);
+	assert(s.isSaving() || count == _G(scene_list).total_scenes);
+
+	// Handle current tail
+	s.syncAsUint32LE(_G(scene_list).tail);
+
+	// Handle table
+	for (int i = 0; i < count; ++i)
+		s.syncAsSint16LE(_G(scene_list).table[i]);
+}
+
+bool player_been_here(int16 scene_num) {
+	for (int i = 0; i < _G(scene_list).tail; i++)
+		if (_G(scene_list).table[i] == scene_num)
+			return true;
+
+	return false;
+}
+
+bool player_enters_scene(int16 scene_num) {
+	if (player_been_here(scene_num))
+		return true;
+
+	_G(scene_list).table[_G(scene_list).tail] = scene_num;
+	++_G(scene_list).tail;
+
+	if (_G(scene_list).tail > _G(scene_list).total_scenes)
+		error_show(FL, 'SLTS');
+
+	return false;
+}
+
+void player_forgets_scene(int16 scene_num) {
+	// Check the list
+	for (int i = 0; i < _G(scene_list).tail; i++) {
+		// Found a match
+		if (_G(scene_list).table[i] == scene_num) {
+			// Close the table
+			for (int j = i; j < _G(scene_list).tail; j++) {
+				_G(scene_list).table[j] = _G(scene_list).table[j + 1];
+			}
+
+			// One less scene
+			--_G(scene_list).tail;
+			return;
+		}
+	}
+}
+
+} // End of namespace M4