Refactor into common/client classes for client/server support

Example for voxel/voxelmetaverse#26

index.coffee

@@ -5,21 +5,43 @@ InventoryWindow = require 'inventory-window'
 ever = require 'ever'
 
 module.exports = (game, opts) ->
- new InventoryHotbar(game, opts)
+ if game.isClient
+ new InventoryHotbarClient game, opts
+ else
+ new InventoryHotbarCommon game, opts
 
 module.exports.pluginInfo =
  loadAfter: ['voxel-carry', 'voxel-registry']
 
-class InventoryHotbar extends EventEmitter
+class InventoryHotbarCommon extends EventEmitter
  constructor: (@game, opts) ->
  opts ?= {}
 
  @inventory = game.plugins?.get('voxel-carry')?.inventory ? opts.inventory ? throw 'voxel-inventory-hotbar requires "voxel-carry" plugin or "inventory" option set to inventory instance'
- registry = game.plugins?.get('voxel-registry')
+ @selectedIndex = 0
+
+ enable: () ->
+
+ disable: () ->
+
+ give: (itemPile) -> @inventory.give itemPile
+ take: (itemPile) -> @inventory.take itemPile
+
+ # take some items from the pile the player is currently holding
+ takeHeld: (count=1) -> @inventory.takeAt @selectedIndex, count
+
+ # get the pile of items the player is currently holding
+ held: () ->
+ @inventory.get @selectedIndex
 
+class InventoryHotbarClient extends InventoryHotbarCommon
+ constructor: (@game, opts) ->
+ super @game, opts
+
+ registry = game.plugins?.get('voxel-registry')
  windowOpts = opts.windowOpts ? {}
  windowOpts.registry ?= registry if registry
- windowOpts.inventory ?= @inventory 
+ windowOpts.inventory ?= @inventory
  windowOpts.inventorySize ?= opts.inventorySize ? @inventory.size()
  windowOpts.width ?= opts.width ? windowOpts.inventorySize # default to one row
  @inventoryWindow = new InventoryWindow windowOpts
@@ -40,28 +62,25 @@ class InventoryHotbar extends EventEmitter
  enable: () ->
  @inventoryWindow.container.style.visibility = ''
 
- @keydown = (ev) => # TODO: disable whem gui open?
+ @keydown = (ev) => # TODO: disable when gui open? (or use kb-bindings../interact)
  if '0'.charCodeAt(0) <= ev.keyCode <= '9'.charCodeAt(0)
  slot = ev.keyCode - '0'.charCodeAt(0) 
  if slot == 0
  slot = 10
  slot -= 1
- @inventoryWindow.setSelected(slot)
+ @selectedIndex = slot
+ @inventoryWindow.setSelected(@selectedIndex)
  ever(document.body).on 'keydown', @keydown
+
+ super()
 
  disable: () ->
  @inventoryWindow.container.style.visibility = 'hidden'
  ever(document.body).removeListener 'keydown', @keydown
 
- give: (itemPile) -> @inventory.give itemPile
- take: (itemPile) -> @inventory.take itemPile
-
- # take some items from the pile the player is currently holding
- takeHeld: (count=1) -> @inventory.takeAt @inventoryWindow.selectedIndex, count
-
- # get the pile of items the player is currently holding
- held: () ->
- @inventory.get @inventoryWindow.selectedIndex
+ super()
 
  refresh: () ->
  @inventoryWindow.refresh()
+
+