CC: pocket4

-- pocket4
-- 四角形が縦に動く

-- Functions
function init()
  term.setTextColor(colors.white)
  term.setBackgroundColor(colors.black)
  term.clear()
end

function drawPoint(x,y,color)
  term.setBackgroundColor(color)
  term.setCursorPos(x,y)
  term.write(" ")
end

function drawSquare(x,y,color)
  drawPoint(x,y,color)
  drawPoint(x+1,y,color)
  drawPoint(x, y+1, color)
  drawPoint(x+1, y+1, color)
end

-- Main
for y=1,20 do
  init()  -- 画面を初期化する
  drawSquare(2,y,colors.red)  -- 指定した座標に指定した色で点を描く
  os.sleep(0.5)  -- 0.5秒待つ
end