ModeloEspecial：基于 Backbone.JS 的 ORM

local modeloEspecial = ModeloEspecial:new {
	name = "yogodb",
	debug = settings.debugSql
}

local function migrate(schemaVersion, exec)
	if schemaVersion < 1 then
		log "migrating schema to v1"

		local createPlayers = [[CREATE TABLE IF NOT EXISTS players (
gender VARCHAR,
country VARCHAR,
sombrero INTEGER,
level INTEGER,
currentExp INTEGER,
firstRun INTEGER,
name VARCHAR,
color1 INTEGER,
color2 INTEGER,
totalTimePlayed INTEGER,
remoteplayerid VARCHAR,
wordId VARCHAR);]]
		exec(createPlayers)
	end
	return 1
end

modeloEspecial:migrate(migrate)

local Model = require'modeloespecial'.Model
local Player = Model:extend {table = 'players'}

Player.sequenceData = {
	{name = "idle", start = 1, count = 8, time = 800},
	{name = "jump", start = 9, count = 8, time = 800},
	-- other sequence data
}
Player.sheetData = {
  width = 128,
  height = 128,
  numFrames = 16,
}

function Player:getSprite(parent)
	assert(self:isInstanceOf(Player), 'Called .getSprite() instead of :getSprite()')

	local group = display.newGroup()

  -- the spritesheet is in either images/player/male.png or images/player/female.png

  local path = string.format("images/player/%s.png", self:get'gender')
	local sheet = graphics.newImageSheet(path, self.class.sheetData)
	local sprite = display.newSprite(group, sheet, self.class.sequenceData)
	group.sprite = sprite
	function group:playSequence(name)
	  self.sprite:setSequence(name)
	  self.sprite:play()
	end

	if parent then
		parent:insert(group)
	end
	return group
end

return Player

local storyboard = require 'storyboard'
local Player = require 'player'
local scene = storyboard.newScene()

local player

function scene:createScene()

end

function scene:enterScene()
  player = Player:fetchById(1)
  player:getSprite(scene.view)
end

function scene:exitScene()
  player = nil
end

scene:addEventListener('createScene', scene)
scene:addEventListener('enterScene', scene)
scene:addEventListener('exitScene', scene)

return scene