Diablo 2 is arguably one of the best action RPG created ever. This is humble attempt to recreate and, hopefully, deconstruct it using Common Lisp programming language and related techniques.

Features

• Support for Tiled map format.
• Support for Aseprite sprite format.
• Support for CastleDB database format.
• Performant Entity-Component-System implementation supporting parent-child entitiy relationships.
• Prefab subsystem allowing creation of new components using predefined file-backed template.
• Simple yet powerful events subsystem.
• Full-blown game character subsystem.
• Simple actions subsystem, providing building blocks for complex character behaviour.
• Basic game session utilities.
• 2D renderer with functional interface.
• Sprite batching subsystem.
• Simple DSL for creating GUI windows by Nuklear library.
• Naïve implementation of A* pathfinding algorithm.
• Powerful debugging facilities, including entity tree dumping and visual debugging.
• Loading assets from zip files.
• Simple yet versatile configuration subsystem.
• Logging subsystem.

Installation

d2clone-kit requires liballegro to function. To install liballegro, refer to your distribution's package manager; for instance, on Debian derivatives (including Ubuntu and Mint):

sudo apt-get install liballegro-acodec5.2 liballegro-audio5.2 \
    liballegro-image5.2 liballegro-dialog5.2 liballegro-ttf5.2 \
    liballegro-physfs5.2 liballegro-video5.2

Currently the following Common Lisp implementations are tested and supported by d2clone-kit:

• SBCL
• CCL
• ECL

You can run it on x86_64 Linux, macOS, and Windows, while SBCL on Linux is the recommended platform.

To install d2clone-kit, clone the repository to your Quicklisp's local-projects directory (assuming you have Quicklisp installed):

$ git clone https://gitlab.com/lockie/d2clone-kit \
    ~/quicklisp/local-projects/d2clone-kit
$ sbcl --quit --eval \
    "(progn (ql:register-local-projects) (ql:quickload :d2clone-kit))"

Glossary

• action - abstraction of a multi-frame action performed by an entity. Unless stated otherwise, action is represented with its global index.
• isometric coordinates - coordinates in isometric projection.
• orthogonal coordinates - floating point in-game world coordinates. One unit of length corresponds to one map tile width, typically 64 pixels.
• prefab - system-specific object loaded from file and used as a template to create new instances of system's component.
• screen coordinates - integer screen pixel coordinates.
• viewport coordinates - screen pixel coordinates relative to the current camera position.

Roadmap

See ROADMAP.

Legal

d2clone-kit is licensed under the GNU GPL license version 3. See LICENSE.

Diablo® II - Copyright © 2000 Blizzard Entertainment, Inc. All rights reserved. Diablo and Blizzard Entertainment are trademarks or registered trademarks of Blizzard Entertainment, Inc. in the U.S. and/or other countries.

d2clone-kit and any of its maintainers are in no way associated with or endorsed by Blizzard Entertainment®.