-- [].
local score = 0

-- [Подключение физики].
local physics = require ("physics")
physics.start ()

-- [Загрузка фона].
local background = display.newRect (160, 250, 350, 550)
background:setFillColor (0, 0.8, 0.8)

-- [].
local scoreText = display.newText (score, display.contentCenterX, 70, "11871.otf", 40)
scoreText:setFillColor (0, 0, 0)

-- [Загрузка круга].
local circle = display.newCircle (0, 0, 20)
circle.x = display.contentCenterX
circle.y = display.contentHeight -50
circle.isSensor = true
circle:setFillColor (0, 0.3, 0.3)

-- [Загрузка стен].
local wall_1 = display.newRect (10, 300, 350, 10)
  wall_1:setFillColor (0, 0.6, 0.6)
local wall_2 = display.newRect (440, 300, 350, 10)
  wall_2:setFillColor (0, 0.6, 0.6)

local wall_3 = display.newRect (360, 220, 350, 10)
  wall_3:setFillColor (0, 0.6, 0.6)
local wall_4 = display.newRect (-70, 220, 350, 10)
  wall_4:setFillColor (0, 0.6, 0.6)

local wall_5 = display.newRect (35, 140, 350, 10)
  wall_5:setFillColor (0, 0.6, 0.6)
local wall_6 = display.newRect (465, 140, 350, 10)
  wall_6:setFillColor (0, 0.6, 0.6)

local wall_7 = display.newRect (-25, 60, 350, 10)
  wall_7:setFillColor (0, 0.6, 0.6)
local wall_8 = display.newRect (405, 60, 350, 10)
  wall_8:setFillColor (0, 0.6, 0.6)

local wall_9 = display.newRect (-80, -20, 350, 10)
  wall_9:setFillColor (0, 0.6, 0.6)
local wall_10 = display.newRect (350, -20, 350, 10)
  wall_10:setFillColor (0, 0.6, 0.6)

-- [Загрузка монеты].
local money_1 = display.newRect(225, 300, 15, 15)
  money_1:setFillColor (0, 0.3, 0.3)

-- [Подключение физики к объектам].
-- (Подключение физики к кругу).
physics.addBody (circle)
circle.gravityScale = 0
circle.isSensor = true

-- (Подключение физики к стенам).
physics.addBody (wall_1, "static")
physics.addBody (wall_2, "static")
physics.addBody (wall_3, "static")
physics.addBody (wall_4, "static")
physics.addBody (wall_5, "static")
physics.addBody (wall_6, "static")
physics.addBody (wall_7, "static")
physics.addBody (wall_8, "static")
physics.addBody (wall_9, "static")
physics.addBody (wall_10, "static")

-- (Подключение физики к монетам).
physics.addBody (money_1)
money_1.isSensor = true
money_1.gravityScale = 0

-- [Добавление ID к объектам].
circle.ID = "Circle"
wall_1.ID = "Wall"
wall_2.ID = "Wall"
wall_3.ID = "Wall"
wall_4.ID = "Wall"
wall_5.ID = "Wall"
wall_6.ID = "Wall"
wall_7.ID = "Wall"
wall_8.ID = "Wall"
wall_9.ID = "Wall"
wall_10.ID = "Wall"
money_1.ID = "Money"

-- [Движение стен].
local speed = 0.9
local function onUpdate (event)
wall_1.y = wall_1.y + speed
wall_2.y = wall_1.y + speed

wall_3.y = wall_3.y + speed
wall_4.y = wall_3.y + speed

wall_5.y = wall_5.y + speed
wall_6.y = wall_5.y + speed

wall_7.y = wall_7.y + speed
wall_8.y = wall_7.y + speed

wall_9.y = wall_9.y + speed
wall_10.y = wall_9.y + speed

  if (wall_1.y > 520) then
    wall_1.y = 120
  elseif (wall_3.y > 520) then
    wall_3.y = 120
  elseif (wall_5.y > 520) then
    wall_5.y = 120
  elseif (wall_7.y > 520) then
    wall_7.y = 120
  elseif (wall_9.y > 520) then
    wall_9.y = 120
  end
end

Runtime:addEventListener ("enterFrame", onUpdate)

-- [Движение монеты].
local speed = 0.9
local function onUpdate_2 (event)
  money_1.y = money_1.y + speed

        if (money_1.y > 520) then
          money_1.y = 120
        end
      end

Runtime:addEventListener ("enterFrame", onUpdate_2)

-- [Движение круга].
local function dragCircle (event)

local circle = event.target
local phase = event.phase

  if ("began" == phase) then
display.currentStage:setFocus (circle)
circle.touchOffsetX = event.x - circle.x

  elseif ("moved" == phase) then
circle.x = event.x - circle.touchOffsetX

  elseif ("ended" == phase or "cancelled" == phase) then
display.currentStage:setFocus(nil)
end

return true
end

circle:addEventListener ("touch", dragCircle)

-- [Функция прикосновения, круга к стенкам].
local function onLocalCollision (self, event)
  if (event.phase == "began") then
    if (self.ID == "Circle" and event.other.ID == "Wall") then
      endGame ()
    end
  end
end

-- [Функция завершения игры].
function endGame ()
  Runtime:removeEventListener ("enterFrame", onUpdate)
  circle:removeEventListener ("touch", dragCircle)
  circle:removeEventListener ("collision", circle)
  Runtime:removeEventListener ("enterFrame", onUpdate_2)
  local text = display.newText ("END GAME!", display.contentCenterX, 45, "11871.otf", 70)
  text:setFillColor (0, 0.420, 0.420)
end

circle.collision = onLocalCollision
circle:addEventListener("collision", circle)

local function score (event)
    if (event.phase == "began") then
      if (self.ID == "Circle" and event.other.ID == "Money") then
      score = score + 100
      scoreText = score
    end
  end
end