CC: exercise9_2

-- exercise9_2
-- L字型を上下に動かす

-- 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 drawLShape(x,y,color)
  drawPoint(x,y,color)
  drawPoint(x,y+1,color)
  drawPoint(x,y+2,color)
  drawPoint(x+1,y+2,color)
  drawPoint(x+2,y+2,color)
end

-- Main
local y = 1

while true do
  init()  -- 画面を初期化する
  drawLShape(2, y, colors.red)  -- 指定した座標に指定した色で点を描く

  local event, moji = os.pullEvent("char")
  if moji == "z" then
    y = y + 1
  else
    y = y - 1
  end

  os.sleep(0.3)  -- 0.5秒待つ
end