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engines/ultima/ultima8/usecode/usecode.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 "ultima/ultima8/misc/common_types.h"
+
+#include "ultima/ultima8/usecode/usecode.h"
+#include "ultima/ultima8/ultima8.h"
+
+namespace Ultima {
+namespace Ultima8 {
+
+uint32 Usecode::get_class_event(uint32 classid, uint32 eventid) {
+	if (get_class_size(classid) == 0) return 0;
+
+	if (eventid >= get_class_event_count(classid)) {
+		warning("eventid too high: %u >= %u for class %u",
+			eventid, get_class_event_count(classid), classid);
+	}
+
+	const uint8 *data = get_class(classid);
+
+	uint32 offset = 0;
+	if (GAME_IS_U8) {
+		offset = data[12 + (eventid * 4) + 0];
+		offset += data[12 + (eventid * 4) + 1] << 8;
+		offset += data[12 + (eventid * 4) + 2] << 16;
+		offset += data[12 + (eventid * 4) + 3] << 24;
+	} else if (GAME_IS_CRUSADER) {
+		offset = data[20 + (eventid * 6) + 2];
+		offset += data[20 + (eventid * 6) + 3] << 8;
+		offset += data[20 + (eventid * 6) + 4] << 16;
+		offset += data[20 + (eventid * 6) + 5] << 24;
+	} else {
+		warning("Invalid game type.");
+	}
+
+	return offset;
+}
+
+} // End of namespace Ultima8
+} // End of namespace Ultima