Complete basic crafting functionality

2014-12-24 19:17:37 -08:00
parent 3ea6a845c7
commit 1a84ce2e28
20 changed files with 427 additions and 90 deletions
@@ -0,0 +1,92 @@
+###
+# Crafting Guide - crafting_plan.coffee
+#
+# Copyright (c) 2014 by Redwood Labs
+# All rights reserved.
+###
+
+Inventory = require './inventory'
+
+########################################################################################################################
+
+module.exports = class CraftingPlan
+
+    constructor: (@catalog, includingTools)->
+        if not @catalog then throw new Error 'catalog is required'
+        @includingTools = if includingTools then true else false
+        @clear()
+
+    # Public Methods ###############################################################################
+
+    clear: ->
+        @make      = new Inventory
+        @need      = new Inventory
+        @result    = new Inventory
+        @steps     = []
+        @_expected = new Inventory
+        @_pending  = null
+
+        return this
+
+    craft: (name, quantity=1, have=null)->
+        @clear()
+        @result.addInventory(have) if have?
+
+        @_expected.add name, quantity
+        @_pending = @_expected.clone()
+        while not @_pending.isEmpty
+            @_processPending()
+
+        @steps.reverse()
+
+    # Object Overrides #############################################################################
+
+    toString: ->
+        return "#{@constructor.name} { need:#{@need}, make:#{@make}, result:#{@result} }"
+
+    # Private Methods ##############################################################################
+
+    _processPending: ->
+        targetItem = @_pending.pop()
+        return unless targetItem?
+
+        recipes = @catalog.findRecipes targetItem.name
+        return if not recipes.length > 0
+        recipe = recipes[0]
+
+        if @includingTools
+            for tool in recipe.tools
+                totalExpected = @result.quantityOf(tool.name) + @_expected.quantityOf(tool.name)
+                if totalExpected < tool.quantity
+                    @_pending.add tool.name, tool.quantity
+                    @_expected.add tool.name, tool.quantity
+
+        while @_totalQuantityOf(targetItem.name) < @_expected.quantityOf(targetItem.name)
+            @steps.push recipe
+
+            for item in recipe.input
+                @_processInputItem item
+
+            for item in recipe.output
+                @_processOutputItem item
+
+    _processInputItem: (item)->
+        quantityAvailable = @result.quantityOf item.name
+        quantityUsed      = Math.min quantityAvailable, item.quantity
+        quantityNeeded    = item.quantity - quantityUsed
+
+        @result.remove item.name, quantityUsed
+        @_pending.add item.name, quantityNeeded
+        @need.add item.name, quantityNeeded
+
+    _processOutputItem: (item)->
+        quantityMissing = @need.quantityOf item.name
+        quantityUsed = Math.min quantityMissing, item.quantity
+        quantityLeft = item.quantity - quantityUsed
+
+        @need.remove item.name, quantityUsed
+        @result.add item.name, quantityLeft
+        @make.add item.name, item.quantity
+
+    _totalQuantityOf: (name)->
+        return @result.quantityOf(name) - @need.quantityOf(name)