LaytonMotdmPcPort

This is a PC port of the DoCoMo mobile phone game "Professor Layton and the Mansion of the Deathly Mirror", also known as "レイトン教授と死鏡の館"

Project architecture

LaytonMotdm

The main entry point to the application.

It provides a simple chapter selection and the screen to draw the game's content on.

After setting up some chapter-specific information, it runs an asynchronous Task with the actual game logic in it.

DocomoLayton

The game's actual logic.

The code was decompiled from the .class Java files found in the game and adjusted to compile with C#. It was also annotated with attributes on classes, members, and methods to preserve the original, obfuscated names.

The tools to decompile the .class Java files were FernFlower (IntelliJ's built-in java decompiler) and http://www.javadecompilers.com also set to FernFlower. Some classes decompiled with better code flow on the online resource than IntelliJ.

DocomoSdk

Provides mostly stubs to references of the nttdocomo SDK in the game's logic.

Actual implementations of SDK classes are, but not limited to:

• Graphics
• Image
• Font
• Canvas

Additionally, three helper classes were added to support access to various information, specific to DoCoMo mobile devices:

• AppInfo; provides access to the applications name, for example "deathmirror"
• Resources; provides access to the resources normally found in the application's .jar file
• ScratchPad; provides access to the application's persistent cache. Is used for meta and save data

DocomoCsJavaBridge

Provides helper classes and logic to bridge the implementation differences and meta data from Java to C#.

It contains the attributes used to annotate the C# classes, members, and methods to preserve the original, obfuscated names.

It contains an event, that was injected in the game's logic to signal the LaytonMotdm wrapper application when a frame was done drawing.

It contains some reimplementations of Java classes and types to replicate Java behaviour:

• Connector; provides access to javax.microedition.io.Connector and implementations for the protocols "scratchpad://" and "resource://"
• JavaString; provides access to native SJIS strings (as are default on DoCoMo mobile devices) and its various extensions, like Trim() (which trims whitespace differently than C#'s string.Trim())
• System; provides access to System.Out and was repurposed to use Serilog to print and log messages