MRDS Live

An unofficial stream overlay for Monster Rancher DS which shows your monsters stats, conditions, and change in stats over time. Currently this overlay only works with the DeSmuME emulator.

For a demo, see the following video:

Usage

First time setup

DeSmuME Lua setup

1. Download and install DeSmuME if you do not already have it installed
2. Check whether your installation of DeSmuME is 32-bit (x86) or 64-bit (x86-64)
3. Download the Lua 5.1 DLL that matches the architecture of your copy of DeSmuME (32-bit or 64-bit)
   • Download from: https://sourceforge.net/projects/luabinaries/files/5.1.5/Windows%20Libraries/Dynamic/
   • 32-bit / x86: lua-5.1.5_Win32_dll14_lib.zip
   • 64-bit / x86-64: lua-5.1.5_Win64_dll14_lib.zip
4. Extract the lua5.1.dll file from the zip file you downloaded
5. Move lua5.1.dll to the same folder where your DeSmuME executable is
6. Rename lua5.1.dll to lua51.dll

Download the program

7. Download the zip file for your operating system of the latest release at the following link:
   • https://github.com/ExcaliburZero/mrds_live/releases
   • Under the Assets header, click on the .zip link for your OS to download file
8. Unzip the .zip file you downloaded

Running Lua script in DeSmuME

9. Run DeSmuME and start the ROM for the game
10. In the menu bar, click on Tools > Lua Scripting > New Lua Script Window...
11. Click the Browse... button and select the record_data.lua file your downloaded

Run server and configure overlay in OBS

12. In the folder you extracted the .zip file to, double click on mrds_live.exe (or mrds_live on Linux) to run the server we will have OBS connect to
13. In OBS, create a new Browser source and give it the following settings:
    • URL: http://localhost:3000/front
    • Width: 1920
    • Height: 1080
    • Custom CSS: body { margin: 0px auto; overflow: hidden; }

Configuring DeSmuME screens in OBS

The following instructions describe the setup I use for DeSmuME with a horizontal LCDs layout and 4x Window Size. Feel free to use whatever setting values work for how you have DeSmuME setup.

14. In OBS, create a Window Capture source for DeSmuME
15. Copy paste that DeSmuME Window Capture source
16. For both DeSmuME Window capture sources, click on Right Click > Transform > Edit Transform and put in the following settings:
    • Top screen:
      • Position: 40, 39
      • Size: 2040, 794
      • Crop: left=1, right=1024, top=30, bottom=1
    • Bottom screen:
      • Position: 1140, 39
      • Size: 1451, 565
      • Crop: left=1024, right=1, top=30, bottom=1

Each subsequent usage

1. Run DeSmuME and start the ROM for the game
2. In the menu bar, click on Tools > Lua Scripting > record_data.lua
3. In the folder you extracted the .zip file to, double click on mrds_live.exe (or mrds_live on Linux) to run the server we will have OBS connect to
4. In OBS, edit the Browser source and click on the Refresh cache of the current page button

Related links

• mrds_extract - Set of tools for extracting data from and working with save data for Monster Rancher DS.
• mrds_overlay - DeSmuME script for overlaying information such as monster stress, fatigue, and lifespan for Monster Rancher DS.
• Data Crystal page for Monster Rancher DS - Information on how Monster Rancher DS works.
• FCEUX Lua API docs - Documentation for the Lua scripting API that DeSmuME provides.