Class: FelFlame::Components

Inherits:
Object
  • Object
show all
Extended by:
Enumerable
Defined in:
felflame.rb,
component_manager.rb

Overview

Creates component managers and allows accessing them them under the Components namespace as Constants

To see how component managers are used please look at the Helper::ComponentManagerTemplate documentation.

TODO: Improve Component overview

Class Method Summary collapse

Class Method Details

.each(&block) ⇒ Enumerator

Iterate over all existing component managers. You also call other enumerable methods instead of each, such as each_with_index or select

Returns:

  • (Enumerator) 


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# File 'component_manager.rb', line 50

def each(&block)
  constants.each(&block)
end

.new(component_name, *attrs, **attrs_with_defaults) ⇒ ComponentManager

Creates a new component manager.

Examples:

# Here color is set to default to red
# while max and current are nil until set.
# When you make a new component using this component manager
# these are the values and accessors it will have.
FelFlame::Component.new('Health', :max, :current, color: 'red')

Parameters:

  • component_name (String) —

    Name of your new component manager. Must be stylized in the format of constants in Ruby

  • attrs (:Symbols) —

    New components made with this manager will include these symbols as accessors, the values of these accessors will default to nil

  • attrs_with_defaults (Keyword: DefaultValue) —

    New components made with this manager will include these keywords as accessors, their defaults set to the values given to the keywords

Returns:

  • (ComponentManager) 


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# File 'component_manager.rb', line 23

def new(component_name, *attrs, **attrs_with_defaults)
  if FelFlame::Components.const_defined?(component_name)
    raise(NameError.new, "Component Manager '#{component_name}' is already defined")
  end

  const_set(component_name, Class.new(FelFlame::Helper::ComponentManager) {})
  attrs.each do |attr|
    FelFlame::Components.const_get(component_name).attr_accessor attr
  end
  attrs_with_defaults.each do |attr, _default|
    #FelFlame::Components.const_get(component_name).attr_accessor attr
    FelFlame::Components.const_get(component_name).attr_reader attr
    FelFlame::Components.const_get(component_name).define_method("#{attr}=") do |value|
      attr_changed_trigger_systems(attr) unless value.equal? send(attr)
      instance_variable_set("@#{attr}", value)
    end
  end
  FelFlame::Components.const_get(component_name).define_method(:set_defaults) do
    attrs_with_defaults.each do |attr, default|
      instance_variable_set("@#{attr}", default)
    end
  end
  FelFlame::Components.const_get(component_name)
end