Entities defined in your addon will automatically generate an FGD and put it into your addons config folder.

Creating an entity

To link your entity to Hammer you need to add a [Library] attribute to your class, this will define the entity name and description.

A basic example:

Hammer Attributes

All of these are optional attributes that can be added to your class to change the behaviour in Hammer.

[Hammer.Solid]

Tells Hammer this entity is brush based.

[Hammer.SupportsSolid]

Tells Hammer this point entity can also be a brush entity, such as ent_door entity.

[Hammer.EditorModel]

Tells Hammer what model to use for the entity and is added to the class.

[Hammer.EditorSprite]

Tells Hammer what sprite to use for the entity and is added to the class.

[Hammer.EntityTool]

Appends this Entity to Hammer's Entity tool list like so:

[Hammer.Model]

Makes it so the model, skin and bodygroups can be set and changed in Hammer.

[Hammer.Skip]

Can be used if you do not want your entity exposed in Hammer.

[Hammer.AutoApplyMaterial]

Automatically applies the supplied material to the tied brush.

Hammer Properties

Any property in your class can be exposed to Hammer using the [Property] attribute</page>.

An example of a property being defined:

Your entity properties will then show up in Hammer:

Inputs

Any method in your entity class can be exposed to Hammer as an input using the [Input] attribute - parameters you define are automatically handled.

An example of an input being defined:

Outputs

Any output in your entity class is automatically exposed to Hammer as an output.

An example of an output being defined:

Firing Outputs

You can fire your output using Entity.FireOutput(name, sender) like this: