MOHAWK: Add a basic LBCode implementation.

This is enough for the Rugrats Adventure Game to play the introduction
videos, but is still in a very preliminary state.

svn-id: r55215

1 files changed, 94 insertions, 0 deletions

diff --git a/engines/mohawk/livingbooks_code.h b/engines/mohawk/livingbooks_code.h
new file mode 100644
index 0000000000..7960e79035
--- /dev/null
+++ b/engines/mohawk/livingbooks_code.h
@@ -0,0 +1,94 @@
+/* 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#ifndef MOHAWK_LIVINGBOOKS_CODE_H
+#define MOHAWK_LIVINGBOOKS_CODE_H
+
+#include "common/substream.h"
+
+namespace Mohawk {
+
+class MohawkEngine_LivingBooks;
+class LBItem;
+
+enum LBValueType {
+	kLBValueString,
+	kLBValueInteger
+};
+
+struct LBValue {
+	LBValue() { type = kLBValueInteger; integer = 0; }
+
+	LBValueType type;
+	Common::String string;
+	int integer;
+
+	bool operator==(const LBValue &x) const;
+	bool operator!=(const LBValue &x) const;
+};
+
+enum {
+	kLBCodeLiteralInteger = 0x1
+};
+
+enum {
+	kLBCodeTokenString = 0x1,
+	kLBCodeTokenLiteral = 0x5,
+	kLBCodeTokenChar = 0x6,
+	kLBCodeTokenEndOfStatement = 0x7,
+	kLBCodeTokenEndOfFile = 0x8,
+	kLBCodeTokenOpenBracket = 0xf,
+	kLBCodeTokenCloseBracket = 0x10,
+	kLBCodeTokenLong = 0x11,
+
+	kLBCodeTokenEquals = 0x22, // TODO: maybe..
+	kLBCodeTokenQuote = 0x27, // "'"
+	kLBCodeTokenComma = 0x2c // ","
+};
+
+class LBCode {
+public:
+	LBCode(MohawkEngine_LivingBooks *vm);
+	~LBCode();
+
+	void runCode(LBItem *src, uint32 offset);
+
+protected:
+	MohawkEngine_LivingBooks *_vm;
+
+	uint32 size;
+	byte *data;
+
+	Common::HashMap<uint16, Common::String> strings;
+
+	Common::Array<LBValue> readParams(LBItem *src, uint32 &offset);
+	void runCodeCommand(LBItem *src, uint32 &offset);
+	void runCodeItemCommand(LBItem *src, uint32 &offset);
+	void runCodeNotifyCommand(LBItem *src, uint32 &offset);
+};
+
+} // End of namespace Mohawk
+
+#endif