diff options
Diffstat (limited to 'lib/felflame')
| -rw-r--r-- | lib/felflame/component_manager.rb | 13 | ||||
| -rw-r--r-- | lib/felflame/entity_manager.rb | 32 |
2 files changed, 42 insertions, 3 deletions
diff --git a/lib/felflame/component_manager.rb b/lib/felflame/component_manager.rb index c513498..ca5be89 100644 --- a/lib/felflame/component_manager.rb +++ b/lib/felflame/component_manager.rb @@ -184,11 +184,22 @@ module FelFlame end # Entities that have this component - # @return [Array<Integer>] + # @return [Array<Component>] def entities @entities ||= [] end + # A single entity. Use this if you expect the component to only belong to one entity and you want to access it. + # @return [Component] + def entity + if entities.empty? + Warning.warn("This component belongs to NO entities but you called the method that is intended for components belonging to a single entity.\nYou may have a bug in your logic.") + elsif entities.length > 1 + Warning.warn("This component belongs to MANY entities but you called the method that is intended for components belonging to a single entity.\nYou may have a bug in your logic.") + end + entities.first + end + # Update attribute values using a hash or keywords. # @return [Hash<Symbol, Value>] Hash of updated attributes def update_attrs(**opts) diff --git a/lib/felflame/entity_manager.rb b/lib/felflame/entity_manager.rb index 0e40b21..9489f29 100644 --- a/lib/felflame/entity_manager.rb +++ b/lib/felflame/entity_manager.rb @@ -8,6 +8,13 @@ module FelFlame # Add each component add(*components) + # Fancy method redirection for when the `component` method is called + @component_redirect = Object.new + @component_redirect.instance_variable_set(:@entity, self) + @component_redirect.define_singleton_method(:[]) do |component_manager| + instance_variable_get(:@entity).component(component_manager) + end + self.class._data.push self end @@ -17,6 +24,26 @@ module FelFlame @components ||= {} end + # A single component from a component manager. Use this if you expect the component to only belong to one entity and you want to access it. Access the component using either parameter notation or array notation. + # @example + # @entity.component[@component_manager] # array notation + # @entity.component(@component_manager) # method notation + # @param manager [ComponentManager] If you pass nil you can then use array notation to access the same value. + # @return [Component] + def component(manager = nil) + if manager.nil? + @component_redirect + else + if components[manager].nil? + raise "This entity(#{self}) doesnt have any components of this type: #{manager}" + elsif components[manager].length > 1 + Warning.warn("This entity has MANY of this component but you called the method that is intended for having a single of this component type.\nYou may have a bug in your logic.") + end + components[manager].first + end + end + + # Removes this Entity from the list and purges all references to this Entity from other Components, as well as its data. # @return [Boolean] +true+ def delete @@ -68,6 +95,9 @@ module FelFlame check_systems component, :removal_triggers if component.entities.include? self component.entities.delete self components[component.class].delete component + if components[component.class].empty? + components.delete component.class + end end true end @@ -78,8 +108,6 @@ module FelFlame #def to_json() end class <<self - #include Enumerable - # Makes component managers behave like arrays with additional # methods for managing the array # @!visibility private |