Modding:General Best Practices

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Prefixing

Prefix your object and table names with some unique ID.

For instance, alphabeardmods_{id}. This will prevent namespace conflicts with official content and other mods in the future.

<?xml version="1.0" encoding="utf-8"?>
<objects>
  <object Name="ALPHABEARDMODS_CoolNewSword" Load="Merge">
...
  </object> 
</objects>

Merging

Only include your content and the minimum changeset via Load="Merge" in tables and object definitions.

Don't copy the whole contents of the game xml. You only need to include new content.

For objects and encounter tables, if you're editing an existing item you can use Load="Merge" in it's tag and only specify new items. For example, if I wanted my mod to give chain mail a 2DV:

<?xml version="1.0" encoding="utf-8"?>
<objects>
  <object Name="Chain Mail" Load="Merge">
    <part Name="Armor" DV="2" />
  </object> 
</objects>

Random Functions

To avoid conflicts and to keep consistency between seeds, Stat.Random() and Stat.Rnd() should not be called. The ideal is to use GetSeededRandomGenerator() for your mod's randomness. The next best is calling RandomCosmetic() or Rnd2().

ObjectBlueprint Definitions

In general, unless you're defining a unique object, make sure you add the xml property Load="Merge" to prevent breaking behavior.

Stats

Prefer using value over sValue, unless you're creating a unique creature. When loading ObjectBlueprints, the code loads both sValue and value into a stat, then if sValue is set, prefers using that to set a stat over value.

Harmony Patches

Harmony Patches are an advanced technique for code injection/modification. It allows modding parts of the game that are not normally accessible via the normal part and event systems exposed to modders. Harmony patching is recommended only for modders with advanced coding experience. For some advice about when and when not to use Harmony, see Harmony Modding.