lua code that starts running slowly

gistfile1.txt

local middleclass = {
  _VERSION     = 'middleclass v3.2.0',
  _DESCRIPTION = 'Object Orientation for Lua',
  _URL         = 'https://github.com/kikito/middleclass',
  _LICENSE     = [[
    MIT LICENSE

    Copyright (c) 2011 Enrique García Cota

    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the
    "Software"), to deal in the Software without restriction, including
    without limitation the rights to use, copy, modify, merge, publish,
    distribute, sublicense, and/or sell copies of the Software, and to
    permit persons to whom the Software is furnished to do so, subject to
    the following conditions:

    The above copyright notice and this permission notice shall be included
    in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
    IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
    CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
    TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
    SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  ]]
}

local _metamethods = {}
for m in ([[ add band bor bxor bnot call concat div eq
             gc ipairs idiv le len lt metatable mod mode
             mul pairs pow shl shr sub tostring unm ]]):gmatch("%S+") do
  _metamethods['__' .. m] = true
end

local function _setClassDictionariesMetatables(aClass)
  local dict = aClass.__instanceDict
  dict.__index = dict

  local super = aClass.super
  if super then
    local superStatic = super.static
    setmetatable(dict, { __index = super.__instanceDict })
    setmetatable(aClass.static, { __index = function(_,k) return rawget(dict,k) or superStatic[k] end })
  else
    setmetatable(aClass.static, { __index = function(_,k) return dict[k] end })
  end
end

local function _propagateMetamethod(aClass, name, f)
  for subclass in pairs(aClass.subclasses) do
    if not subclass.__metamethods[name] then
      subclass.__instanceDict[name] = f
      _propagateMetamethod(subclass, name, f)
    end
  end
end

local function _updateClassDict(aClass, key, value)
  if _metamethods[key] then
    if value == nil then
      aClass.__metamethods[key] = nil
      if aClass.super then
        value = aClass.super.__instanceDict[key]
      end
    else
      aClass.__metamethods[key] = true
    end

    _propagateMetamethod(aClass, key, value)
  end

  aClass.__instanceDict[key] = value
end

local function _setClassMetatable(aClass)
  setmetatable(aClass, {
    __tostring = function() return "class " .. aClass.name end,
    __index    = aClass.static,
    __newindex = _updateClassDict,
    __call     = function(self, ...) return self:new(...) end
  })
end

local function _createClass(name, super)
  local aClass = { name = name, super = super, static = {}, __mixins = {}, __instanceDict = {}, __metamethods = {} }
  aClass.subclasses = setmetatable({}, {__mode = "k"})

  _setClassDictionariesMetatables(aClass)
  _setClassMetatable(aClass)

  return aClass
end

local function _setSubclassMetamethods(aClass, subclass)
  for m in pairs(_metamethods) do
    subclass.__instanceDict[m] = aClass.__instanceDict[m]
  end
end

local function _setDefaultInitializeMethod(aClass, super)
  aClass.initialize = function(instance, ...)
    return super.initialize(instance, ...)
  end
end

local function _includeMixin(aClass, mixin)
  assert(type(mixin)=='table', "mixin must be a table")
  for name,method in pairs(mixin) do
    if name ~= "included" and name ~= "static" then aClass[name] = method end
  end
  if mixin.static then
    for name,method in pairs(mixin.static) do
      aClass.static[name] = method
    end
  end
  if type(mixin.included)=="function" then mixin:included(aClass) end
  aClass.__mixins[mixin] = true
end

local Object = _createClass("Object", nil)

function Object.static:allocate()
  assert(type(self) == 'table', "Make sure that you are using 'Class:allocate' instead of 'Class.allocate'")
  return setmetatable({ class = self }, self.__instanceDict)
end

function Object.static:new(...)
  local instance = self:allocate()
  instance:initialize(...)
  return instance
end

function Object.static:subclass(name)
  assert(type(self) == 'table', "Make sure that you are using 'Class:subclass' instead of 'Class.subclass'")
  assert(type(name) == "string", "You must provide a name(string) for your class")

  local subclass = _createClass(name, self)
  _setSubclassMetamethods(self, subclass)
  _setDefaultInitializeMethod(subclass, self)
  self.subclasses[subclass] = true
  self:subclassed(subclass)

  return subclass
end

function Object.static:subclassed(other) end

function Object.static:isSubclassOf(other)
  return type(other)                   == 'table' and
         type(self)                    == 'table' and
         type(self.super)              == 'table' and
         ( self.super == other or
           type(self.super.isSubclassOf) == 'function' and
           self.super:isSubclassOf(other)
         )
end

function Object.static:include( ... )
  assert(type(self) == 'table', "Make sure you that you are using 'Class:include' instead of 'Class.include'")
  for _,mixin in ipairs({...}) do _includeMixin(self, mixin) end
  return self
end

function Object.static:includes(mixin)
  return type(mixin)          == 'table' and
         type(self)           == 'table' and
         type(self.__mixins)  == 'table' and
         ( self.__mixins[mixin] or
           type(self.super)           == 'table' and
           type(self.super.includes)  == 'function' and
           self.super:includes(mixin)
         )
end

function Object:initialize() end

function Object:__tostring() return "instance of " .. tostring(self.class) end

function Object:isInstanceOf(aClass)
  return type(self)                == 'table' and
         type(self.class)          == 'table' and
         type(aClass)              == 'table' and
         ( aClass == self.class or
           type(aClass.isSubclassOf) == 'function' and
           self.class:isSubclassOf(aClass)
         )
end

function middleclass.class(name, super, ...)
  super = super or Object
  return super:subclass(name, ...)
end

middleclass.Object = Object

setmetatable(middleclass, { __call = function(_, ...) return middleclass.class(...) end })
local random = function()
  return js.global:Random()
end
local abs = function(n)
  return js.global:abs(n)
end
local floor = function(n)
  return js.global:floor(n)
end
local PI = js.global:PI()
local cos = function(n) return js.global:cos(n) end
local sin = function(n) return js.global:sin(n) end
local atan2 = function(a,b) return js.global:atan2(a,b) end
local Screen = {width=480, height=480}
local class = middleclass
local Vector = class('Vector')
function Vector:initialize(_x, _y)
  self.x = _x or 0
  self.y = _y or 0
end
local drawRect = function(r,g,b,x,y,w,h)
  js.global:drawRect(r, g, b, x*Screen.width, y*Screen.height, Screen.width*w, Screen.height*w)
end
function Vector:set(v)
  if not v then return end
  self.x = v.x
  self.y = v.y
end
function Vector:addDirection(degrees, speed)
  local s = speed or 100
  local rad = degrees * js.global:PI()/180
  self.x = self.x + js.global:sin(rad)*s
  self.y = self.y - js.global:cos(rad)*s
end
function Vector:directionTo(v)
  return atan2(v.x - self.x, -(v.y - self.y)) * 180 / PI
end
function Vector:add(v)
  self.x = self.x + v.x
  self.y = self.y + v.y
  return self
end
function Vector:div(n)
  if n == 0 then return self; end
  self.x = self.x / n
  self.y = self.y / n
  return self
end
function Vector:onScreen()
  return self.x >= 0 and self.x <= 1 and self.y >= 0 and self.y <= 1
end
function Vector:rotate(amt)
  if amt == 0 then return; end
  amt = amt * PI / 180
  local ox = self.x
  self.x = self.x*cos(amt) - self.y * sin(amt)
  self.y = ox*sin(amt) + self.y * cos(amt)
end
local Color = class('Color')
function Color:initialize(_r,_g,_b)
  self.r = _r or 0
  self.g = _g or 0
  self.b = _b or 0
end
function Color:copy()
  return Color:new(self.r, self.g, self.b)
end
function Color:set(r,g,b)
  self.r = r
  self.g = g
  self.b = b
end
Color.static.white = Color:new(1,1,1)
Color.static.red = Color:new(1,0,0)
local DrawingRect = class('DrawingRect')
function DrawingRect:initialize(_color, offset, _size)
  self.color = _color or Color:new()
  self.offset = offset or Vector:new()
  self.size = _size or Vector:new()
  self.currentPosition = Vector:new()
end
function DrawingRect:draw(drawing)
  self:updateState(drawing)
  local xPos = Screen.width*(self.currentPosition.x)
  local yPos = Screen.height*(self.currentPosition.y)
  js.global:drawRect(self.color.r, self.color.g, self.color.b, xPos, yPos, Screen.width*self.size.x, Screen.height*self.size.y)
end
function DrawingRect:updateState(drawing)
  -- copy out the information that we need to draw with
  self.currentPosition:set(self.offset)
  self.currentPosition:rotate(drawing.rotation)
  self.currentPosition:add(drawing.position)
end
function DrawingRect:isOverlapping(rect)
  return
    abs(self.currentPosition.x - rect.currentPosition.x) <
    (self.size.x + rect.size.x) / 2 and
	  abs(self.currentPosition.y - rect.currentPosition.y) <
  	(self.size.y + rect.size.y) / 2
end
local Drawing = class('Drawing');
function Drawing:initialize()
  self.color = Color:new(1,1,1);
  self.rects = {}
  self.position = Vector:new()
  self.rotation = 0
end
function Drawing:setColor(r, g, b)
  self.color:set(r,g,b)
  return self
end
function Drawing:addRect(_x,_y,_w,_h)
   table.insert(self.rects, DrawingRect:new(self.color:copy(), Vector:new(_x,_y), Vector:new(_w, _h)))
   return self
end
-- generates a set of rects that can look like a rotated square
function Drawing:addRects(width, height)
  local directionAmount = 0
  local ox = 0
  local oy = 0
  if width > height then
	  directionAmount = directionAmount + PI / 2
	  local tw = width
	  width = height
		height = tw
  end
  local n = floor(height / width)
	local o = -width * (n - 1) / 2
	local vo = width
	width = width * 1.05
	for i=1,n do
    local rp = Vector:new(sin(directionAmount) * o + ox, cos(directionAmount) * o + oy)
    table.insert(self.rects, DrawingRect:new(
      self.color:copy(),
      rp,
      Vector:new(width, width)
    ))
    o = o + vo
  end
  return self
end
function Drawing:draw()
    for i,v in ipairs(self.rects) do
      v:draw(self)
    end
end
function Drawing:setPosition(position)
  self.position:set(position)
  return self
end
function Drawing:setRotation(rotation)
  self.rotation = rotation
  return self
end
function Drawing:isOverlapping(otherDrawing)
  for i,ourRect in ipairs(self.rects) do
    for j,otherRect in ipairs(otherDrawing.rects) do
      if ourRect:isOverlapping(otherRect) then return true end
    end
  end
  return false
end
local Fiber = class('Fiber')
Fiber.static.fibers = {}
Fiber.static.update = function()
  for i,v in ipairs(Fiber.fibers) do
    v:update()
  end
end
function Fiber:initialize(fiberGroup)
  self.functions = {}
  self.functionCount = 0
  self.currentFunction = 1
  self.waitTicks = 0
  fiberGroup = fiberGroup or Fiber.fibers
  table.insert(fiberGroup, self)
end
function Fiber:doOnce(func)
  table.insert(self.functions, function()
      func()
      self:gotoNext()
  end)
  self.functionCount = self.functionCount + 1
  return self
end
function Fiber:doRepeat(func)
  table.insert(self.functions, func)
  self.functionCount = self.functionCount + 1
  return self
end
function Fiber:gotoNext()
  self.currentFunction = self.currentFunction + 1
  if self.currentFunction > self.functionCount then
    self.currentFunction = 1
  end
end
function Fiber:wait(ticks)
  table.insert(self.functions, function()
      self.waitTicks = ticks
      self:gotoNext()
  end)
  self.functionCount = self.functionCount + 1
  return self
end
function Fiber:update()
  if self.functionCount == 0 then
    return
  end
  if self.waitTicks > 0 then
    self.waitTicks = self.waitTicks - 1
    return
  end
  self.functions[self.currentFunction]()
end
local Actor = class('Actor')
Actor.static.groups = {}
Actor.static.number = 10
Actor.static.update = function()
  Actor.static.number = 0
  for i,group in ipairs(Actor.groups) do
    for j, actor in ipairs(group.contents) do
      Actor.static.number = Actor.static.number + 1
      actor:preupdate()
      actor:update()
      actor:draw()
    end
  end
end
Actor.static.scroll = function(GroupName, ox, oy, minX, minY, maxX, maxY)
  for i,group in ipairs(Actor.groups) do
    if group.groupName == GroupName then
      for j, actor in ipairs(group.contents) do
        if actor.position.x < minX then
          actor.position.x = maxX
        end
        if actor.position.y < minY then
          actor.position.y = maxY
        end
        if actor.position.x > maxX then
          actor.position.x = minX
        end
        if actor.position.y > maxY then
          actor.position.y = minY
        end
        actor.position.x = actor.position.x + ox
        actor.position.y = actor.position.y + oy
      end
      break;
    end
  end  
end
function Actor:initialize(...)
  arg = {...}
  local myClass = self.class.name
  for i,v in pairs(Actor.groups) do
    if v.groupName == myClass then
      self.group = v.contents
    end
  end
  if not self.group then
    local tempGroup = {groupName = myClass, contents={}}
    table.insert(Actor.groups, tempGroup)
    self.group = tempGroup.contents
  end
  self.fibers = {}
  self.position = Vector:new(0.5,0.5)
  self.velocity = Vector:new(0,0)
  self.drawing = Drawing:new()
  self.rotation = 0
  self.ticks = 0
  table.insert(self.group, self)
  if self.init then
    if ... then
      self:init(unpack(arg))
    else
      self:init()
    end
  end
end
function Actor:newFiber()
  return Fiber:new(self.fibers)
end
function Actor:draw()
  self.drawing:draw(self.position)
end
function Actor:preupdate()
  self.ticks = self.ticks + 1
  self.position:add(self.velocity)
  self.drawing:setPosition(self.position):setRotation(self.rotation);
  -- update the objects that are attached to this actor
  for i,v in pairs(self.fibers) do
    v:update()
  end
end
function Actor:update()
end
function Actor:remove()
  for i,v in ipairs(self.group) do
    if v == self then
      table.remove(self.group, i)
      break;
    end
  end
end
function Actor:onCollision(otherClass, callback)
  -- get the group we are colliding with
  for i,group in ipairs(Actor.groups) do
    if group.groupName == otherClass then
      for j,actor in ipairs(group.contents) do
        if self.drawing:isOverlapping(actor.drawing) then
          -- if not callback then return true end
          if not callback then
            return true;
          else

          end
        end
      end
      return false;
    end
  end
end
local ParticleActor = class('ParticleActor', Actor)
function ParticleActor:init()
  self.duration = 2
  self.color = Color:new(1,1,1)
  self.size = Vector:new(0.01, 0.01)
end
function ParticleActor:update()
  -- if this particle is requesting a spawn
  if self.particleSpawner then
    local spawner = self.particleSpawner
    self:remove()
    if spawner.number < 1 then return end
    for i=1,spawner.number do
      -- generate all the particles we need
      local pActor = ParticleActor:new()
      pActor.position:set(spawner.position)
      pActor.size = Vector:new(spawner.size, spawner.size)
      -- calculate velocity based on direction
      local d = spawner.direction + (random()*spawner.directionSpread)-(spawner.directionSpread*0.5)
      pActor.velocity:addDirection(d, spawner.speed)
      pActor.duration = spawner.duration
      pActor.color = spawner.color
    end
    return
  end
  -- otherwise, just update the particle
  -- we have to manually draw, since particles don't have graphics attached to them
  local xPos = Screen.width*(self.position.x)
  local yPos = Screen.height*(self.position.y)
  js.global:drawRect(self.color.r, self.color.g, self.color.b, xPos, yPos, Screen.width*self.size.x, Screen.height*self.size.y)
  if self.ticks >= self.duration then
    self:remove()
  end
end
local Particle = class('Particle')
function Particle:initialize()
  self.actor = ParticleActor:new()
  self.actor.particleSpawner = self
  self.duration = 10
  self.direction = 0
  self.size = 0.02
  self.directionSpread = 360
  self.speed = 0.01
  self.number = 5
  self.position = Vector:new()
  self.color = Color:new()
end
function Particle:setNumber(count)
  self.number = count
  return self
end
function Particle:duration(time)
  self.duration = time
  return self
end
function Particle:setPosition(position)
  self.position:set(position)
  return self
end
function Particle:setDirection(direction, spread)
  self.direction = direction
  self.directionSpread = spread or 30
  return self
end
function Particle:setSpeed(speed)
  self.speed = speed
  return self
end
function Particle:setColor(r,g,b)
  self.color:set(r,g,b)
  return self
end
function Actor:newParticle()
  return Particle:new():setPosition(self.position)
end

local Mouse = class('Mouse')
Mouse.static.position = Vector:new()
function mouseMove(x,y)
  Mouse.position.x = x
  Mouse.position.y = y
end
local Letter = class('Letter')
Letter.static.dots = {}
Letter.static.drawDots = function(letter, x,y,color,size)
  if not Letter.dots[letter] then
    Letter.dots[letter] = {}
    local letterBitCount = js.global:getDotCountForLetter(letter)
    for i=0,letterBitCount-1 do
      local px = js.global:getDotPositionForLetter(letter,i,0)
      local py = js.global:getDotPositionForLetter(letter,i,1)
      table.insert(Letter.dots[letter], {x = px, y=py})
    end
  end
  for i,v in ipairs(Letter.dots[letter]) do
    drawRect(color.r, color.b, color.g,
      x + v.x * size,
      y + v.y * size,
      size,
      size)
  end
end
Letter.static.draw = function(text, x,y, color, scale)
  local letterWidth = scale * 5
  local tx = x
  local ty = y
  for i=1,#text do
    local c = text:sub(i,i)
    Letter.drawDots(c, tx, ty, color, scale)
    tx = tx+letterWidth
  end
end
local TextActor = class('TextActor', Actor)
function TextActor:init(text)
  self.text = text
  self.duration = 1
  self.size = 0.02
end
function TextActor:draw()
  if self.ticks == 0 then
    self.velocity:div(self.duration)
  end
  Letter.draw(self.text, self.position.x, self.position.y, self.color, self.size)
  if self.ticks >= self.duration then
    self:remove()
  end
end
-- END STDLIB





-- this is the thing that runs the whole game
function drawFrame()
  js.global:drawRect(0,0,0,240,240,480,480)
  Actor.update()
  Fiber.update()
  Actor.scroll('Star', 0,0, 0,0, 1,1)
  print(Actor.number)
  Letter.draw("ACTORS: " .. Actor.static.number, 0,0,Color.white, 0.005)
--  Letter.draw("BRO", 0.5, 0.5, Color.red, 0.02)
  -- we are just going to force draw a letter now, just for fun
end
local Star = class('Star', Actor)
function Star:init()
  self.position.x = js.global:Random()
  self.position.y = js.global:Random()
  local c = js.global:Random()
  self.speed = c*0.005
  self.drawing:setColor(c*1.5,c*1.5,c*1.5):addRect(0,0, 0.01*c, 0.01*c)
end
function Star:update()
  self.position.y = self.position.y+self.speed
end
local Shot = class('Shot', Actor)
function Shot:initialize(...)
  Actor.initialize(self, ...) -- invoking the superclass' initializer
end
function Shot:init(position)
    self.drawing:setColor(1, 0,0)
      :addRect(-0.02, 0.02, 0.02, 0.04)
      :addRect(0.02, 0.02, 0.02, 0.04)
    self.position:set(position)
    self.velocity = Vector:new(0,-0.03)
end
function Shot:update()
  if not self.position:onScreen() then
    self:remove()
  end
end
local Ship = class('Ship', Actor)
function Ship:init()
  self.position.x = 0.5
  self.position.y = 0.8
  self.drawing:setColor(1, 0,0)
    :addRect(-0.02, 0.02, 0.02, 0.04)
    :addRect(0.02, 0.02, 0.02, 0.04)
    :setColor(1, 1, 1)
    :addRect(0,0, 0.02, 0.05)
  self:newFiber()
    :doOnce(function()
      Shot:new(self.position)
      self:addMuzzleFlash(-0.02)
      self:addMuzzleFlash(0.02)
    end)
    :wait(3)
end
function Ship:addMuzzleFlash(offsetX)
  self:newParticle()
    :setPosition(Vector:new(self.position.x+offsetX, self.position.y))
    :setNumber(3)
    :setDirection(0, 30)
    :setSpeed(0.02)
    :setColor(1, 0, 0)
end
function Ship:update()
--  self.position.y = self.position.y + 0.01
  self.position.x = Mouse.position.x
  self.position.y = Mouse.position.y
end
for i=0,30 do
  local s = Star:new()
end
local ship = Ship:new()
local Bullet = class('Bullet', Actor)
function Bullet:init(position)
  self.position:set(position)
  local angle = self.position:directionTo(ship.position)
  self.velocity:addDirection(angle, 0.015)
  self.drawing:setColor(1,1,1)
    :addRects(0.02, 0.04)
    :addRects(0.04, 0.02)
end
function Bullet:update()
  self.rotation = self.rotation + 3
  if not self.position:onScreen() then self:remove() end
end
local Enemy = class('Enemy', Actor)
function Enemy:init()
  self.position.x = js.global:Random()
  self.position.y = 0
  self.drawing:setColor(1, 1,0)
    :addRect(-0.02, -0.02, 0.02, 0.04)
    :addRect(0.02, -0.02, 0.02, 0.04)
    :addRect(0,0, 0.02, 0.05)
  self:newFiber()
    :doOnce(function()
      Bullet:new(self.position)
    end)
    :wait(30)
end
function Enemy:update()
  self.position.y = self.position.y + 0.01
  if self.position.y > 1 then
    self:remove()
  end
  if self:onCollision('Shot') then
    local ta = TextActor:new("+1")
    ta.color = Color:new(1,1,1)
    ta.duration = 30
    ta.size = 0.005
    ta.position:set(self.position)
    ta.velocity:set(Vector:new(0,-0.01))
    self:remove()
    self:newParticle()
      :setColor(1,1,0)
      :setNumber(5)
  end
end
Fiber:new()
  :doOnce(function()
    Enemy:new()
  end)
  :wait(30)