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Dynamic Entities
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| { | |
| "name": "Camera", | |
| "components": [ | |
| { | |
| "name": "Position", | |
| "attributes": [ | |
| { "x": 100 } | |
| ] | |
| } | |
| ] | |
| } |
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| module Component | |
| end | |
| module System | |
| module World | |
| class << self | |
| def load args | |
| args.state.entities = [] | |
| fn.each $gtk.list_files('data/components') do |component_def| | |
| new_component_module $gtk.parse_json_file "data/components/#{component_def}" | |
| end | |
| fn.each $gtk.list_files('data/entities') do |entity_def| | |
| new_entity_class $gtk.parse_json_file "data/entities/#{entity_def}" | |
| end | |
| end | |
| def new_component_module component_def | |
| Component.const_set(component_def['name'], Module.new do | |
| if component_def['attributes'] | |
| fn.each component_def['attributes'] do |attribute| | |
| send :attr_accessor, attribute.keys[0].to_sym | |
| send :instance_variable_set, :"@#{attribute.keys[0]}", attribute.values[0] | |
| end | |
| end | |
| if component_def['behaviors'] | |
| fn.each component_def['behaviors'] do |behavior| | |
| send :include, Component.const_get(behavior) | |
| end | |
| end | |
| def self.included klass | |
| fn.each instance_variables do |var| | |
| klass.instance_variable_set var, (instance_variable_get var) | |
| end | |
| end | |
| end) | |
| end | |
| def new_entity_class entity_def | |
| Object.const_set(entity_def['name'], Class.new do | |
| if entity_def['components'] | |
| fn.each entity_def['components'] do |component| | |
| send :include, Component.const_get(component['name']) | |
| if component['attributes'] | |
| fn.each component['attributes'] do |attribute| | |
| send :instance_variable_set, :"@#{attribute.keys[0]}", attribute.values[0] | |
| end | |
| end | |
| end | |
| end | |
| def self.new(...) | |
| object = allocate | |
| object.send(:initialize, ...) | |
| fn.each instance_variables do |var| | |
| object.instance_variable_set var, (instance_variable_get var) | |
| end | |
| object | |
| end | |
| end) | |
| end | |
| end | |
| end | |
| end |
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| { | |
| "name": "Position", | |
| "attributes": [ | |
| { "x": 0 }, | |
| { "y": 0 }, | |
| { "z" : 0 } | |
| ] | |
| } |
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