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Old 01-16-2026, 09:27 AM   #1
LansdowneSt
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Join Date: Feb 2004
Location: From Duxbury, Mass residing Baltimore
Posts: 7,842
era_ballparks.txt file (and prk, ootp3D & obj file) help

I'm trying to link custom 3D models to teams in a modded era_ballpark.txt file. I've done it before but mostly with silvam14 parks and I am expanding that usage to parks by others (Flying Cannuck, asrivkin and bctrackboi11).

Half are successfully loading the 3D model and half are not. As near as I can tell it is because they don't follow the auto-load naming convention and it cannot be changed by me because things may point to those file names/locations inside of the park files themselves. I reckon most people are manually navigating to and selecting prk and obj files whatever they are named and wherever they are located but it seems the game autoload was built with strict naming and placement locations (I think?). I turned to Google Gemini and it says:

"In Out of the Park Baseball (OOTP), a .prk file primarily contains ballpark metadata—such as park factors, wall distances, and 2D diagram coordinates—but it does not hardcode a specific path to a .obj file.
Instead, the game relies on identical naming conventions and folder structure for automatic loading:

Implicit Linkage: For the game to automatically pair a 3D model with a .prk file, the .obj file must share the same filename as the .prk file and be located within the same subfolder under ballparks/models/.

Era_ballparks.txt: This file acts as a master database for historical leagues, mapping team/year combinations to specific filenames. For automatic historical updates to work without manual intervention, the filenames listed in this text file must exactly match the .prk and .obj filenames in your models folder. "

I bolded that last part because that seems to be the issue. All the files that do load correctly have all the folders and files named the same and the only subfolder is the Textures one (also synched in name). For example, in the following examples of ones that fail to load the 3D park model, there are files with inconsistent naming. I'm at a loss on how to get them to autoload like silvam14's because the txt file only lets you point to a single file name and not a folder, a .prk and an obj file. Anyone that has taken time incorporate their modded parks into the era_ballparks.txt file, I'd love to hear from you to better understand how to get all the parks to work and not just some of them.

Thanks!
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