Gamesaves

src/app.lua

@@ -1,2 +1,2 @@
 local app = require 'hawk/application'
-return app.new('config.json')
+return app('config.json')

src/controls.lua

@@ -1,6 +1,6 @@
 local store = require 'hawk/store'
 
-local db = store.load('controls-1')
+local db = store('controls-1')
 local controls = {}
 
 local buttonmap = db:get('buttonmap', {

src/hawk/application.lua

@@ -1,18 +1,15 @@
 local json = require 'hawk/json'
+local middle = require 'hawk/middleclass'
+local gamesave = require 'hawk/gamesave'
 
-local application = {}
-application.__index = application
-
-function application.new(configurationPath)
-  local app = {}
-  setmetatable(app, application)
+local Application = middle.class('Application')
 
+function Application:initialize(configurationPath)
   assert(love.filesystem.exists(configurationPath), "Can't read app configuration")
 
   local contents, _  = love.filesystem.read(configurationPath)
-  app.config = json.decode(contents)
-
-  return app
+  self.config = json.decode(contents)
+  self.gamesaves = gamesave(3)
 end
 
-return application
+return Application

src/hawk/gamesave.lua

@@ -0,0 +1,33 @@
+local middle = require 'hawk/middleclass'
+local store = require 'hawk/store'
+
+local SCHEMA = 1
+local Gamesave = middle.class('Gamesave')
+
+function Gamesave:initialize(slots)
+  self.slots = {
+    store('gamesaves-alpha-' .. SCHEMA),
+    store('gamesaves-beta-' .. SCHEMA),
+    store('gamesaves-gamma-' .. SCHEMA),
+  }
+  self._active = 1 
+end
+
+function Gamesave:all()
+  return self.slots
+end
+
+function Gamesave:active()
+  return self.slots[self._active]
+end
+
+function Gamesave:activate(slot)
+  self._active = slot
+  return true
+end
+
+function Gamesave:save()
+  return self.slots[self._active]:flush()
+end
+
+return Gamesave

src/hawk/middleclass.lua

@@ -0,0 +1,147 @@
+-- middleclass.lua - v2.0 (2011-09)
+-- 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.
+-- Based on YaciCode, from Julien Patte and LuaObject, from Sebastien Rocca-Serra
+
+local _classes = setmetatable({}, {__mode = "k"})
+
+local function _setClassDictionariesMetatables(klass)
+  local dict = klass.__instanceDict
+  dict.__index = dict
+
+  local super = klass.super
+  if super then
+    local superStatic = super.static
+    setmetatable(dict, super.__instanceDict)
+    setmetatable(klass.static, { __index = function(_,k) return dict[k] or superStatic[k] end })
+  else
+    setmetatable(klass.static, { __index = function(_,k) return dict[k] end })
+  end
+end
+
+local function _setClassMetatable(klass)
+  setmetatable(klass, {
+    __tostring = function() return "class " .. klass.name end,
+    __index    = klass.static,
+    __newindex = klass.__instanceDict,
+    __call     = function(self, ...) return self:new(...) end
+  })
+end
+
+local function _createClass(name, super)
+  local klass = { name = name, super = super, static = {}, __mixins = {}, __instanceDict={} }
+  klass.subclasses = setmetatable({}, {__mode = "k"})
+
+  _setClassDictionariesMetatables(klass)
+  _setClassMetatable(klass)
+  _classes[klass] = true
+
+  return klass
+end
+
+local function _createLookupMetamethod(klass, name)
+  return function(...)
+    local method = klass.super[name]
+    assert( type(method)=='function', tostring(klass) .. " doesn't implement metamethod '" .. name .. "'" )
+    return method(...)
+  end
+end
+
+local function _setClassMetamethods(klass)
+  for _,m in ipairs(klass.__metamethods) do
+    klass[m]= _createLookupMetamethod(klass, m)
+  end
+end
+
+local function _setDefaultInitializeMethod(klass, super)
+  klass.initialize = function(instance, ...)
+    return super.initialize(instance, ...)
+  end
+end
+
+local function _includeMixin(klass, mixin)
+  assert(type(mixin)=='table', "mixin must be a table")
+  for name,method in pairs(mixin) do
+    if name ~= "included" and name ~= "static" then klass[name] = method end
+  end
+  if mixin.static then
+    for name,method in pairs(mixin.static) do
+      klass.static[name] = method
+    end
+  end
+  if type(mixin.included)=="function" then mixin:included(klass) end
+  klass.__mixins[mixin] = true
+end
+
+local Object = _createClass("Object", nil)
+
+Object.static.__metamethods = { '__add', '__call', '__concat', '__div', '__le', '__lt', 
+                                '__mod', '__mul', '__pow', '__sub', '__tostring', '__unm' }
+
+function Object.static:allocate()
+  assert(_classes[self], "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(_classes[self], "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)
+  _setClassMetamethods(subclass)
+  _setDefaultInitializeMethod(subclass, self)
+  self.subclasses[subclass] = true
+  self:subclassed(subclass)
+
+  return subclass
+end
+
+function Object.static:subclassed(other) end
+
+function Object.static:include( ... )
+  assert(_classes[self], "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:initialize() end
+
+function Object:__tostring() return "instance of " .. tostring(self.class) end
+
+local function class(name, super, ...)
+  super = super or Object
+  return super:subclass(name, ...)
+end
+
+local function instanceOf(aClass, obj)
+  if not _classes[aClass] or type(obj) ~= 'table' or not _classes[obj.class] then return false end
+  if obj.class == aClass then return true end
+  return subclassOf(aClass, obj.class)
+end
+
+local function subclassOf(other, aClass)
+  if not _classes[aClass] or not _classes[other] or aClass.super == nil then return false end
+  return aClass.super == other or subclassOf(other, aClass.super)
+end
+
+local function includes(mixin, aClass)
+  if not _classes[aClass] then return false end
+  if aClass.__mixins[mixin] then return true end
+  return includes(mixin, aClass.super)
+end
+
+return {
+  ["class"] = class,
+  ["subclassOf"] = subclassOf,
+  ["instanceOf"] = instanceOf,
+  ["includes"] = includes,
+}
+

src/hawk/store.lua

@@ -1,27 +1,25 @@
 local json = require 'hawk/json'
+local middle = require 'hawk/middleclass'
 
-local datastore = {}
-datastore.__index = datastore
+local Datastore = middle.class('Datastore')
 
-function datastore.load(namespace)
-  local db = {}
-  setmetatable(db, datastore)
+function Datastore:initialize(namespace)
+  self.path = namespace .. ".json"
 
-  db.path = namespace .. ".json"
-
-  if not love.filesystem.exists(db.path) then 
-    love.filesystem.write(db.path, json.encode({}))
+  if not love.filesystem.exists(self.path) then 
+    love.filesystem.write(self.path, json.encode({}))
   end
 
-  local contents, _  = love.filesystem.read(db.path)
-  db.cache = json.decode(contents)
-
-  return db
+  self:refresh()
 end
 
+function Datastore:refresh()
+  local contents, _  = love.filesystem.read(self.path)
+  self._cache = json.decode(contents)
+end
 
-function datastore:get(key, default)
-  value = self.cache[key]
+function Datastore:get(key, default)
+  value = self._cache[key]
 
   if value == nil then
     return default
@@ -30,13 +28,13 @@ function datastore:get(key, default)
   return value
 end
 
-function datastore:set(key, value)
-  self.cache[key] = value
+function Datastore:set(key, value)
+  self._cache[key] = value
 end
 
 -- Save the contents of the datastore to disk
-function datastore:flush()
-  love.filesystem.write(self.path, json.encode(self.cache))
+function Datastore:flush()
+  love.filesystem.write(self.path, json.encode(self._cache))
 end
 
-return datastore
+return Datastore

src/nodes/scenetrigger.lua

@@ -1,4 +1,4 @@
-local store = require 'hawk/store'
+local app = require 'app'
 
 local anim8 = require 'vendor/anim8'
 local gamestate = require 'vendor/gamestate'
@@ -9,7 +9,7 @@ local machine = require 'datastructures/lsm/statemachine'
 local game = require 'game'
 local camera = require 'camera'
 
-local KEY = 'gamesaves.1.cuttriggers.'
+local NAMESPACE = 'cuttriggers.'
 
 local head = love.graphics.newImage('images/cornelius_head.png')
 local g = anim8.newGrid(144, 192, head:getWidth(), head:getHeight())
@@ -19,20 +19,22 @@ local timeline = {
   opacity=0
 }
 
-local db = store.load('gamesave1-1')
 
 local SceneTrigger = {}
 
 SceneTrigger.__index = SceneTrigger
 SceneTrigger.isTrigger = true
 
 function SceneTrigger.new(node, collider, layer)
+  assert(node.properties.cutscene, "A cutscene to trigger is required")
   local trigger = {}
   setmetatable(trigger, SceneTrigger)
   trigger.x = node.x
   trigger.y = node.y
+  trigger.db = app.gamesaves:active()
+  trigger.key = NAMESPACE .. node.properties.cutscene
 
-  if db:get(KEY .. node.properties.cutscene, false) then --already seen
+  if trigger.db:get(trigger.key, false) then --already seen
     return trigger
   end
 
@@ -41,7 +43,7 @@ function SceneTrigger.new(node, collider, layer)
 
   -- Figure out how to "mix this in"
   trigger.state = machine.create({
-    initial = db:get(KEY, 'ready'),
+    initial = 'ready',
     events = {
       {name = 'start', from = 'ready', to = 'playing'},
       {name = 'stop', from = 'playing', to = 'finished'},
@@ -101,6 +103,7 @@ function SceneTrigger:draw(player)
     current.player.controlState:standard()
     current.trackPlayer = true
     current.scene = nil
+    self.db:set(self.key, true)
   end
 end
 

src/options.lua

@@ -10,7 +10,7 @@ local window = require 'window'
 local controls = require 'controls'
 local VerticalParticles = require "verticalparticles"
 
-local db = store.load('options-1')
+local db = store('options-1')
 
 function state:init()
     VerticalParticles.init()