Variables

Magic supports variables that can be defined and modified by spells.

Creating and Setting Variables

The ModifyVariable action is used to create a variable or update its value.

This action has the following parameters:

• variable : The name of the variable to modify
• default : The value to set the variable to initially. This only happens once, on the first cast of a spell using a variable
• value : The value to update the variable to. This can include references to variables (including this one), attributes or placeholders
• clear : Set to true to reset this variable so it will get its default value on next use.

Example

This will increment a variable on each cast, starting at 10:

        actions:
        - class: ModifyVariable
          variable: count
          default: 10
          value: "count + 1"

Using Variables

Variables can be used in spell parameters, CheckRequirements, and Message and Command actions.

In parameters you simply refer to the variable by its name, such as count / 4.

In Message and Command actions you can refer to a variable two different ways:

• $variable : This will output a floating-point representation of the variable, such as 40.3
• @variable : This will round the variable down and output an integer representation, such as 40

Example

Here is an example of punishing a player after having cast a spell too many times:

      - class: CheckRequirements
        requirements:
          - variables:
            - variable: count
              min: 50
        actions:
          - class: Message
            message: "You have cast this @count times, it's too much!"
          - class: Damage
            damage: "count / 4"

Scope

Variables can have different "scopes". A scope defines how long a variable lasts and what can see and modify that variable. This is set via the scope parameter of the ModifyVariable action.

Available scopes include:

• cast : (The default) This variable will only last for one spell cast and can not be seen by other casts.
• spell : This variable can only be seen by this specific spell, but survives across multiple casts
• mage : This variable can be seen by any spell casts from this player. These work very similarly to attributes.

Full Examples

See the variables folder for several working examples.