crystal.InputListener

A Component which allows an entity to receive input events.

Constructor

Like all other components, InputListener components are created by calling Entity:add_component.

The constructor for InputListener expects one argument, the player_index whose inputs this component should listen to.

Methods

Name	Description
add_input_handler	Registers a function to handle input events.
handle_input	Calls input handlers.
player_index	Returns the player index whose inputs this components responds to.
remove_input_handler	Unregisters a function handling input events.

Examples

local ecs = crystal.ECS:new();
local input_system = ecs:add_system(crystal.InputSystem);

local entity = ecs:spawn(crystal.Entity);
entity:add_component(crystal.InputListener, 1);
entity:add_input_handler(function(input)
  print(input);
  return false;
end);

ecs:update();
input_system:action_pressed("jump"); -- Prints "+jump"