A Car That Turns - Input Function

main.rb

class Game
  attr_gtk
  
  def input_game
    return if state.scene != :game

    if inputs.mouse.click && (inputs.mouse.intersect_rect? state.review_button_rect)
      state.next_scene = :review
    end

    if inputs.keyboard.key_down.r
      state.last_checkpoint = nil
      state.clock = 0
      state.death_count = 0
      state.death_at = 0
      reset_game!
    end

    input_gear

    return if state.clock - state.death_at < 30

    turn_magnitude  = 1.0

    turn_magnitude  = inputs.controller_one.left_analog_x_perc * 1.15 if inputs.controller_one.left_analog_x_perc.abs > 0

    drift_down      = !!inputs.keyboard.space    ||
                      !!inputs.controller_one.r1 ||
                      !!inputs.controller_one.r2

    left_down       = !!inputs.left  || !!inputs.keyboard.j
    right_down      = !!inputs.right || !!inputs.keyboard.k

    state.turn_magnitude = turn_magnitude

    if gtk.platform? :mobile
      if inputs.finger_left
        b = args.state.buttons.find { |b| inputs.finger_left.inside_rect? b }
        args.outputs.primitives << b.border!(r: 255, g: 255, b: 255, a: 255) if b
        if b && b.m == :left
          state.input_occurred = true
          left_down = true
          right_down = false
        elsif b && b.m == :right
          state.input_occurred = true
          left_down = false
          right_down = true
        end
      end

      if inputs.finger_right
        b = args.state.buttons.find { |b| inputs.finger_right.inside_rect? b }
        args.outputs.primitives << b.border!(r: 255, g: 255, b: 255, a: 255) if b

        drift_down = false
        if b && b.m == :drift
          state.input_occurred = true
          drift_down = true
        end
      end
    end

    if left_down
      state.input_occurred = true
      state.steering = :left
    elsif right_down
      state.input_occurred = true
      state.steering = :right
    else
      state.steering = :released
    end

    if drift_down
      state.input_occurred = true
      state.drift_mode = :on
    else
      state.drift_mode = :off
    end
  end
end