         shoot_word.shot()
     if shoot_word?.remain == ''
         point += shoot_word.full.length
-        keep_words.push(shoot_word)
+        inventory.add(shoot_word.full)
         shoot_word = null
         lvl += 1
         for i in [1..lvl-pool_words.length]

Array::pop = (index=@length-1) -> @splice(index, 1)[0]
Array::random = -> @[Math.floor(@length * Math.random())]

stage_height = 300
stage_width = 1000

pool_words = []
keep_words = []
shoot_word = null

lvl = 1
point = 0
player_die = false

class ShootingWord
    constructor: (@full) ->


draw = ->
    $('#point').html(point)
    $('#keep').html(inventory.show())
    $('#playground').empty()
    if shoot_word?
        shoot_word.move()
