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Archipelago Triggers Guide

This guide details the use of the Archipelago YAML trigger system. This guide is intended for a more advanced user with more in-depth knowledge of Archipelago YAML options as well as experience editing YAML files. This guide should take about 5 minutes to read.

What are triggers?

Triggers allow you to customize your game settings by allowing you to define one or many options which only occur under specific conditions. These are essentially "if, then" statements for options in your game. A good example of what you can do with triggers is the custom mercenary mode YAML that was created using entirely triggers and plando.

For more information on plando, you can reference the general plando guide or the A Link to the Past plando guide.

Trigger use

Triggers may be defined in either the root or in the relevant game sections. Generally, the best place to do this is the bottom of the YAML for clear organization.

Each trigger consists of four parts:

option_category specifies the section which the triggering option is defined in.
- Example: A Link to the Past
- This is the category the option is located in. If the option you're triggering off of is in root then you would use null, otherwise this is the game for which you want this option trigger to activate.
option_name specifies the name of the triggering option.
- Example: shop_item_slots
- This can be any option from any category defined in the YAML file in either root or a game section.
option_result specifies the value of the option that activates this trigger.
- Example: 15
- Each trigger must be used for exactly one option result. If you would like the same thing to occur with multiple results, you would need multiple triggers for this.
options is where you define what will happen when the trigger activates. This can be something as simple as ensuring another option also gets selected or placing an item in a certain location. It is possible to have multiple things happen in this section.
- Example:
```
A Link to the Past:
  start_inventory: 
    Rupees (300): 2
```

The general format is:

category:
  option to change:
    desired result

Examples

The above examples all together will end up looking like this:

triggers:
  - option_category: A Link to the Past
    option_name: shop_item_slots
    option_result: 15
    options:
      A Link to the Past:
        start_inventory:
          Rupees(300): 2

For this example, if the generator happens to roll 15 shuffled in shop item slots for your game, you'll be granted 600 rupees at the beginning. Triggers can also be used to change other options.

For example:

triggers:
  - option_category: Timespinner
    option_name: SpecificKeycards
    option_result: true
    options:
      Timespinner:
        Inverted: true

In this example, if your world happens to roll SpecificKeycards, then your game will also start in inverted.

It is also possible to use imaginary values in options to trigger specific settings. You can use these made-up values in either your main options or to trigger from another trigger. Currently, this is the only way to trigger on "setting 1 AND setting 2".