Variables API

Bolt provides an easy API to handle variables, allowing to get or set their value and check if they are defined. All these operations are available from the Variables class.

For example:

Variables.Application.Set("score", 100);

Usings

Make sure you add the following usings to your C# script to access the API:

using Ludiq;
using Bolt;

Scopes

Graph

To access variables on a graph, you first need to create a graph reference. This is basically a path to the nested graph from its root machine.

If you simply want to get the root graph on a machine, you can use:

var graphReference = GraphReference.New(flowMachine, true);

To access nested graphs, you will need to pass their parent nodes as additional parameters, for example:

var graphReference = GraphReference.New(flowMachine, new IGraphParentElement[] { superUnit }, true);

Finally, just pass your graph reference:

Variables.Graph(graphReference)

Object

To access variables on an object:

Variables.Object(gameObject)

Scene

To access sceneA Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info
See in Glossary variables:

Variables.Scene(scene)

Or:

Variables.Scene(gameObjectInScene)

Or:

Variables.ActiveScene

Application

To access application variables:

Variables.Application

Saved

To access saved variables:

Variables.Saved

Operations

In these examples, the lowercase scope refers to one of the scopes above.

Get

To get the value of a variable, use the Get method with a name parameter:

scope.Get("name");

Note that variables are not strongly typed, so you will need to cast them manually. For example:

int health = (int)Variables.Object(player).Get("health")

Set

To set the value of a variable, use the Set method with name and value parameters:

scope.Set("name", value);

For example:

Variables.Object(player).Set("health", 100);

Because variables are not strongly typed, you can pass any value to the second parameter, even if the variable currently is of a different type.

Using the set method with a variable name that does not yet exist will define a new variable.

Is Defined

To check if a variable is defined, use the IsDefined method with a name parameter:

scope.IsDefined("name");

For example:

if (Variables.Application.IsDefined("score"))
{
    // ...
}