Class: Jolt::BodyCollection

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/jolt/body_collection.rb

Constant Summary collapse

MOTION_TYPES = 
{static: 0, kinematic: 1, dynamic: 2}.freeze
INVALID_BODY_ID = 
0xffff_ffff

Instance Method Summary collapse

Constructor Details

#initialize(system) ⇒ BodyCollection

Returns a new instance of BodyCollection.



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# File 'lib/jolt/body_collection.rb', line 10

def initialize(system)
  @system = system
end

Instance Method Details

#[](id) ⇒ Object 



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# File 'lib/jolt/body_collection.rb', line 54

def [](id)
  @system.__body(id)
end

#create(shape:, position: [0, 0, 0], rotation: [0, 0, 0, 1], motion: :dynamic, layer: nil, activate: nil, friction: 0.2, restitution: 0.0, linear_damping: 0.05, angular_damping: 0.05, gravity_factor: 1.0, mass: nil, ccd: false, sensor: false, user_data: nil) ⇒ Object 



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# File 'lib/jolt/body_collection.rb', line 14

def create(shape:, position: [0, 0, 0], rotation: [0, 0, 0, 1],
           motion: :dynamic, layer: nil, activate: nil, friction: 0.2,
           restitution: 0.0, linear_damping: 0.05, angular_damping: 0.05,
           gravity_factor: 1.0, mass: nil, ccd: false, sensor: false,
           user_data: nil)
  @system.__check_alive!
  validate_shape!(shape)
  motion_type = MOTION_TYPES.fetch(motion.respond_to?(:to_sym) ? motion.to_sym : nil)
  if !motion_type.zero? && shape.must_be_static?
    raise InvalidArgumentError, "#{shape.kind} shapes can only be used by static bodies"
  end
  layer ||= motion_type.zero? ? :non_moving : :moving
  layer_id = @system.layers.object_layer_id(layer)
  settings = create_settings(shape, position, rotation, motion_type, layer_id)
  configure_settings(
    settings,
    friction:, restitution:, linear_damping:, angular_damping:,
    gravity_factor:, mass:, ccd:, sensor:, motion_type:
  )
  id = Native.JPH_BodyInterface_CreateAndAddBody(
    @system.__body_interface, settings, activation(activate, motion_type)
  )
  raise InitializationError, "failed to create body" if id == INVALID_BODY_ID

  Body.new(@system, id).tap do |body|
    @system.__register_body(body, shape)
    body.user_data = user_data unless user_data.nil?
  end
rescue KeyError
  raise InvalidArgumentError, "motion must be one of: #{MOTION_TYPES.keys.join(", ")}"
ensure
  Native.JPH_BodyCreationSettings_Destroy(settings) if settings && !settings.null?
end

#each(&block) ⇒ Object 



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# File 'lib/jolt/body_collection.rb', line 48

def each(&block)
  return enum_for(:each) unless block

  @system.__bodies_snapshot.each(&block)
end

#size ⇒ Object Also known as: length 



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# File 'lib/jolt/body_collection.rb', line 58

def size
  @system.__bodies_snapshot.size
end