Creating new Overmap spots

Trivega · 2019-04-04T08:07:19.570Z

Is it possible to create a new overmap location within the json files? For example, with a mod I’m making, I want to create a special type of anthill, but can’t work out how. I’m not actually changing anything about the anthill, just want to make it so the overmap can create a variant of an Anthill that simply fills it with a new type of Ants I made. Error I’m getting is " overmap id ‘X_Anthill’ does not exist."

The spot in json i can find anthill referenced is in the specials.json, under overmap. If is possible to do with just editing json files, how would I go about making an Anthill filled with my new enemies?

Zhilkin · 2019-04-04T10:16:21.720Z

Following docs should help you to get basic idea on creating new locations - read them, try to make new location for your mod and then ask if there are any questions left:

github.com

CleverRaven/Cataclysm-DDA/blob/df0c21780917ad256869fd673c44a8c82cda9b96/doc/OVERMAP.md

# Overmap Generation

## Overview

The **overmap** is what you see in the game when you use the _view map (m)_ command.

It looks something like this:

```
...>│<......................│..............P.FFFF├─FF...
..┌─┼─┐.....................│..............FFFFF┌┘FFFF..
..│>│^│.....................│..............FF┌─┬┘FFFFF.F
──┘...└──┐..............>│<.│..............F┌┘F│FFFFFFF─
.........└──┐........vvO>│v.│............FF┌┘FF│FFFFFFFF
............└┐.......─┬──┼─>│<........┌─T──┘FFF└┐FFFFFFF
.............│.......>│<$│S.│<.......┌┘..FFFFFFF│FFF┌─┐F
..O.........┌┴──┐....v│gF│O.│<v......│...FFFFFF┌┘F.F│F└─
.OOOOO.....─┘...└─────┼──┼──┼────────┤....FFFFF│FF..│FFF
.O.O.....dddd.......^p│^>│OO│<^......└─┐FFFFFFF├────┴─FF
.........dddd........>│tt│<>│..........│FFF..FF│FFFFF.FF

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github.com

CleverRaven/Cataclysm-DDA/blob/df0c21780917ad256869fd673c44a8c82cda9b96/doc/MAPGEN.md

* 0 Intro
  * 0.0 How buildings and terrain are generated
* 1 Adding mapgen entries.
  * 1.0 Methods
  * 1.1 Placement
    * 1.1.0 Embedded
    * 1.1.1 Standalone
  * 1.2 Format and variables
    * 1.2.0 "method"
    * 1.2.1 "om_terrain"
    * 1.2.2 "weight"
  * 1.3 How "overmap_terrain" variables affect mapgen
  * 1.4 Limitations / TODO
* 2 Method: json
  * 2.0 "fill_ter":
  * 2.1 "rows":
    * 2.1.0 "terrain":
    * 2.1.1 "furniture":
  * 2.2 "set": [ ...
    * 2.2.0 "point" { ...

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Anthills are hardcoded locations, but you can probably change a few things about them too.

Trivega · 2019-04-05T05:37:55.119Z

Hmm, so I could create a new location, but then my issue would be how would I make it so the new anthill has a tunnel network to it? I can create the various chambers & tunnels , but how does one make them all connect & be random like the Anthills in game?

I wish I could just make it so the game just automatically upgrades 1 or 2 existing anthills in the game to ones that swap the ant species to the new ones I made.

Zhilkin · 2019-04-05T10:59:12.481Z

Ant tunnels are hardcoded in https://raw.githubusercontent.com/CleverRaven/Cataclysm-DDA/master/src/mapgen_functions.cpp. Look for mapgen_ants_ functions.