GAML 2026 introduces the class and object keywords, bringing full object-oriented programming support beyond species. Classes allow you to define pure data/logic types that are not agents — they have no reflex, no schedule, and no population. They are simply structured values with attributes and methods.

• A class is a blueprint for creating objects (instances). Declared with class ClassName { ... }.
• An object is a value created by calling the class constructor: ClassName(attr: value, ...).
• Classes can have attributes (like species variables) and actions (like species actions, but on objects).
• Classes support inheritance with parent: ClassName.
• Classes can be virtual (abstract) with virtual: true — they cannot be instantiated directly.
• Objects can be stored in any GAML variable, passed as arguments, stored in lists, and used as map keys.

• Class Definition and Instantiation — Declare a class, create objects with the constructor syntax ClassName(attr: value), store objects in variables and lists.
• Attributes and Actions — Read and write attributes (dot notation: obj.attr <- value), call actions (obj.action()), chained calls, comparing objects, passing objects as arguments.
• Inheritance — Extend a class with parent:, override actions, call parent implementation with super.action(), multi-level inheritance, runtime type testing with is.
• Virtual Classes — Declare virtual (abstract) classes and virtual (abstract) actions, polymorphism, partial abstract classes, concrete implementations.
• Advanced Features — Objects as agent attributes, passing objects between agents, objects in species, objects as map keys, object equality.

Feature	Class	Species
Is an agent?	No	Yes
Has reflex/actions/behaviors?	No (methods are plain actions)	Yes
Has a population?	No (no count or lifecycle)	Yes (count, init, lifecycle)
Can be an agent attribute?	Yes	No (species attributes are values)
Used for?	Pure data types, structures, utilities	Simulated entities in the world

• Inheritance — Species
• Defining Actions and Behaviors
• Built-in Statements#class
• Built-in Statements#object