Home - HoraceAndTheSpider/Bloodwych-68k GitHub Wiki

The intention of this Wiki is to provide a reference for all the information known about the Bloodwych data structure.

I have attempted to compile as much knowledge about how the game binary can be modified and where possible show where this data is shared within save games. It is my hope, that with this, more life can be breathed into the game and I have the goal of hopefully one day creating a completely new set of dungeons for Bloodwych.

This research has all been done using the Amiga version of the game, although where known, reference will be made to where data is shared between other 16-bit versions (PC and Atari), and is in no way complete.

Where reference to memory locations is given, ($EAD4) will represent a memory location, which (unless stated) is the location in the memory of an Amiga 500 512k with kickstart 1.3 booting from the Bloodwych_103.ipf or Bloodwych_1927.ipf SPS release. It should be stated which is used. BloodwychDataDisksVol.1 _43 is used for the Extended Levels.

The resourced code (taken from version 439) has all unknown labels denoted using their memory address.

A location given as [$656] refers to the location of the data as an offset within the Bloodwych binary itself, found in the 'c/' folder of the original disk.

A location given as [name] will denote a label used within the 'RELABELLED' source code from this project.

Bloodwych is referred to as BW for short-hand, and The Extended Levels Volume 1 is referred to as BEXT. Specific versions may be referred to as BW102 BW439 and BW1927, according the the SPS release version. Where required BWST will refer to the 'CODE' file from the AtariST version, and DEMO will denote the AtariST exclusive demo.

The game binaries are included in this archive

The resource is broken down into the following sections;

Map-Data Structure

• Map-Location Data - (0) Spaces
• Map-Location Data - (1) Stone Walls
• Map-Location Data - (2) Wooden Walls
• Map-Location Data - (3) Misc.
• Map-Location Data - (4) Stairs
• Map-Location Data - (5) Metal Doors
• Map-Location Data - (6) Pads, Triggers & Holes
• Map-Location Data - (7) Magic Locations

Map Based Objects

• Pad / Floor Traps & Triggers
• Switches
• Teleportation Gems
• Tower Entrance / Exit Locations
• Wall Scrolls

Objects

• Object Location Data Structure
• Object Lookup Table
• Object Definitions

Combat & Magic

• Fighting Mechanics
• Spell Casting Mechanics
• Airbourne Spells

Heroes

• BW Champion Data Structure
• BEXT Champion Data Structure
• BW Pockets Data Structure
• BEXT Pockets Data Structure

Monsters

• Monster Data Structure
• Monster Data Structure (Live)
• Monster Lookup Table
• Monster Attack Spells

Graphics

• Atari ST Raw Data Format
• Game Palette
• Character Definitions
• Colouring Monster Graphics

General

• Menu Layout
• Keyboard Reading Routines
• Keyboard Controls
• Joystick / Mouse Control
• Quickstart Defaults

Notable Contributions, and general thanks for input into the project go to:

User	From	Contribution
HoraceAndTheSpider	UltimateAmiga Forum Admin	Code Investigation and Project Lead
BruceUncle	UltimateAmiga Forum User	Creating the ReSource Files and compilable Dissassembly
bit	DungeonMaster Forum User	Dissassembly comparisons with ST, Grpahics Routines and more
adrazar	AmosFactory Forum User	Spell Casting Mechanics
MadMunky	UltimateAmiga Forum User	HTML Port
Wishbone	UltimateAmiga Forum User	HTML Port
Mr Flay	UltimateAmiga Forum User	Further work on Game Recration (C++)
Torico	UltimateAmiga Forum User	Testing of Modifications