Introduction

This mod has been in the works for literal years! Finally I got around to finishing the core of it, so here it is in all its monstrous glory for your testing pleasure.

This mod adds a very, very big game location to the game. By default it is 100,000,000 tiles in size (10,000x10,000), but I have done basic testing at 100,000x100,000 as well.

To visit the open world, you will need to have unlocked the quarry and enter the open world through the back of the quarry cave. I may add an easier to access entrance at some point.

You can also type

debug warp StardewOpenWorld 5000 9998

into the command console window to warp there.

Features

The open world contains the following as of now:

To some extent, everything goes up in level as you travel further North (harder monsters, better treasure, higher quality ores, etc.).

By default, the map stays the same every time you visit in a given save. You can have it change randomly every day in the config.

There is a rough map of the nearby area if you open the map page while in the open world.

Customization

It is possible for mods to add maps to a coordinate in the open world.

It is also possible for mods to add or change monster spawns.

There is a huge config file that is honestly a bit of a mess, but basically the mod is highly configurable.

Known Issues

Technical Stuff

The size of the open world breaks a lot of how the vanilla game works so a lot of messing around had to be done in order to allow for such a big location. The actual map is only 1 tile in size; actual tile and object info is stored in 100x100 chunks until needed. Objects and monsters are loaded and unloaded as you move from chunk to chunk.

Caching, building, and loading is done to some extent on-the-fly; the mod tries its best to space cache, build, and load activity over time to reduce stuttering. It seems pretty smooth at the moment, but more testing is definitely needed.

Adding maps to the open world using content patcher is very easy, but probably needs a lot more testing as well:

{

    "Format": "2.7.0",

    "Changes": [

        {

            "Action": "EditData",

            "Target": "aedenthorn.StardewOpenWorld/landmarks",

            "Entries": {

                "{{ModId}}_Example": {

                    "MapPath": "Maps/Forest",

                    "MapPosition":{

                        "X":5000,

                        "Y":5000

                    }

                }

            }                  

        }

    ]

}

This adds the entire vanilla forest map near the middle of the open world.

Adding monster spawns can be done by targetting "aedenthorn.StardewOpenWorld/monsters". You can also edit the monsters.json file generated in the mod folder on startup. The format is the same either way.

Disclaimer

Here be dragons.

Code is at https://github.com/aedenthorn/StardewValleyMods/

Stardew Open World