     translate = "translate(#{world.get('x')},#{world.get('y')})"
     rotate = "rotate(#{world.get('angle')} #{center} #{center})"
     "#{translate} #{rotate}"
+  name_style: (world) ->
+    cell_size = world.get 'cell_size'
+    {x: 0.5 * cell_size, y: 0.5 * cell_size, fill: "white", stroke: "white"}
+
+  # behavior
+
   behavior:
     first:     []
     repeat:    []

      world.send 'inspect', child
  inspect: (world, sprite) -> world.put 'inspected', sprite
  selected: (world) -> world == world.get('inspected')
  determine_next_position: (world, args) -> world.get('next_position') || world.get('position')

  # defaults
  position:  [0,0]
  next_position: null
  direction: [1,0]
  obstruction: true
  x: (world) -> cell_position(world, vector.axis.x)
  y: (world) -> cell_position(world, vector.axis.y)
  angle: (world) -> vector.angle world.get('direction')


  running: 'first'

  determine_next_position: (world, args) -> world.get('next_position') || world.get('position')

  prepare: (world, args) ->
    word = world.get('language')[args]
