Class: Gubby::GameEngine

Inherits:
Object show all
Defined in:
lib/gubby/game_engine.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*systems) ⇒ GameEngine

Returns a new instance of GameEngine.



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# File 'lib/gubby/game_engine.rb', line 8

def initialize(*systems)
	@systems = []
	@entities = []
	
	systems.each do |s|
		
		@systems.push(s)
		
	end
	
end

Instance Attribute Details

#entities ⇒ Object (readonly)

Returns the value of attribute entities.



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# File 'lib/gubby/game_engine.rb', line 6

def entities
  @entities
end

#systems ⇒ Object

Returns the value of attribute systems.



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# File 'lib/gubby/game_engine.rb', line 5

def systems
  @systems
end

Instance Method Details

#[](*selectors) ⇒ Object 



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# File 'lib/gubby/game_engine.rb', line 52

def [](*selectors)
	
	found = []
	
	selectors.each do |s|
		
		found.concat(@entities.select{|e| e.name == s}) if s.is_a?(String)
		found.concat(@entities.select{|e| e.is_a?(s)}) if s.is_a?(Module)
		
	end
	
	return found
	
end

#add_entity(e) ⇒ Object 



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# File 'lib/gubby/game_engine.rb', line 28

def add_entity(e)
	@entities.push(e) unless @entities.include?(e)
	e.engine = self
	@systems.each do |s|
		s.refresh_entity(e)
	end
end

#refresh_entity(e) ⇒ Object 



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# File 'lib/gubby/game_engine.rb', line 36

def refresh_entity(e)
	@systems.each do |s|
		s.refresh_entity(e)
	end
end

#remove_entity(e) ⇒ Object 



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# File 'lib/gubby/game_engine.rb', line 42

def remove_entity(e)
	@entities.delete(e)
	@systems.each do |s|
		if s.entities.include?(e) then
			s.entities.delete(e)
		end
	end
	e.engine = nil
end

#run(command, *args) ⇒ Object 



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# File 'lib/gubby/game_engine.rb', line 20

def run(command, *args)
	
	@systems.select{ |s| s.respond_to?(command) }.each do |s|
		s.send(command.to_s, *args)
	end
	
end