# title:   test class
# author:  mieki256
# desc:    short description
# site:    website link
# license: MIT License (change this to your license of choice)
# version: 0.1
# script:  ruby

class StarObj

  def initialize(cx, cy, ang, r)
    @id = 0
    @x = 0
    @y = 0
    @t = 0
    @cx = cx
    @cy = cy
    @ang = ang
    @r = r
  end
  
  def update(dr)
    @id = 1 + (@t % 32).div(16)
    rd = @ang * 3.14159 / 180.0
    r = @r
    @x = r * Math.cos(rd) + @cx
    @y = r * Math.sin(rd) + @cy
    @ang += 1.5
    @r += dr
    @t += 1
  end
  
  def draw
    spr @id, @x-4, @y-4, 0
  end
  
end

$scrw, $scrh = 240, 136
$cx, $cy = $scrw / 2, $scrh / 2
$t = 0

# init objs
$objs = []
n = 24
n.times do |i|
  o = StarObj.new($cx, $cy, i*360/n, 60)
  $objs.push(o)
end

# main loop
def TIC
  r = 0
  r -= 1 if btn 0
  r += 1 if btn 1
  
  # update
  $objs.each {|o| o.update(r)}
  
  # draw
  cls 0
  $objs.each_with_index {|o,i| o.draw}

  print "mruby: #{RUBY_VERSION}",4,8*1,12
  print "count: #{$t}",4,8*2,12
  print ($t.div(60)).to_s+" sec",4,8*3,12
  $t+=1
end