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Allow item stacks as input for recipes

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* Create the SlotController and refactor it into the various places
  where a crafting grid or crafting output is displayed
* Update the Recipe model to allow each "input" stack to retain the
  count indicated in the data file. This required changing how a few
  other classes interact with it in order for them to get the full
  stack back again for each input (instead of just getting the item
  slug)
* Update the ModVersionParser to allow for full stacks to be given
  as input and refactored common code out for handling input/output/
  tools stacks
This commit is contained in:
Andrew Miner
2015-04-07 19:21:02 -07:00
parent 2ba4dca95b
commit 144aa1bf32
17 changed files with 244 additions and 3426 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/coffee/controllers/crafting_grid_controller.coffee
+14 -42
View File
@@ -6,9 +6,10 @@ All rights reserved.
###
BaseController = require './base_controller'
ImageLoader = require './image_loader'
SlotController = require './slot_controller'
{Duration} = require '../constants'
{Event} = require '../constants'
ImageLoader = require './image_loader'
########################################################################################################################
@@ -17,58 +18,29 @@ module.exports = class CraftingGridController extends BaseController
constructor: (options={})->
if not options.imageLoader? then throw new Error 'options.imageLoader is required'
if not options.modPack? then throw new Error 'options.modPack is required'
# options.model should be a recipe
options.templateName = 'crafting_grid'
super options
@_imageLoader = options.imageLoader
@_modPack = options.modPack
@_slotCount = 9
@imageLoader = options.imageLoader
@modPack = options.modPack
@_modPack.on Event.change, => @tryRefresh()
@modPack.on Event.change, => @tryRefresh()
# BaseController Methods #######################################################################
onDidRender: ->
@slots = []
for el in @$('td')
$el = $(el)
@slots.push a:$el.find('a'), img:$el.find('img')
@slotControllers = []
for el in @$('.view__slot')
controller = new SlotController el:el, imageLoader:@imageLoader, modPack:@modPack
controller.render()
@slotControllers.push controller
super
refresh: ->
for index in [0...@slots.length]
slot = @slots[index]
slot.a.addClass 'empty'
slot.a.removeAttr 'href'
slot.img.attr 'src', '/images/empty.png'
slot.img.removeAttr 'alt'
display = @_getItemDisplayAt index
if display?
slot.a.removeClass 'empty'
slot.a.attr 'href', display.itemUrl
slot.a.attr 'title', display.itemName
@_imageLoader.load display.iconUrl, slot.img
slot.img.attr 'alt', display.itemName
for i in [0...@slotControllers.length]
controller = @slotControllers[i]
controller.model = @model?.getStackAtSlot(i)
@$el.tooltip show:{delay:Duration.snap, duration:Duration.fast}
super
# Backbone.View Overrides ######################################################################
events: ->
return _.extend super,
'click td a': 'routeLinkClick'
# Private Methods ##############################################################################
_getItemDisplayAt: (slot)->
if slot >= @_slotCount then throw new Error "slot (#{slot}) must be less than #{@_slotCount}"
return null unless @model?
itemSlug = @model.getItemSlugAt slot
return null unless itemSlug?
itemDisplay = @_modPack.findItemDisplay itemSlug
return itemDisplay
src/coffee/controllers/full_recipe_controller.coffee
+2 -2
View File
@@ -30,8 +30,8 @@ module.exports = class FullRecipeController extends BaseController
onDidRender: ->
@gridController = @addChild CraftingGridController, '.view__crafting_grid',
modPack: @modPack
imageLoader: @imageLoader
modPack: @modPack
@inputController = @addChild InventoryTableController, '.input .view__inventory_table',
editable: false
@@ -72,7 +72,7 @@ module.exports = class FullRecipeController extends BaseController
inputs.clear()
if @model?
for stack in @model.input
@model.eachInputStack (stack)->
inputs.add stack.itemSlug, stack.quantity
src/coffee/controllers/minimal_recipe_controller.coffee
+6 -18
View File
@@ -8,6 +8,7 @@ All rights reserved.
BaseController = require './base_controller'
CraftingGridController = require './crafting_grid_controller'
ImageLoader = require './image_loader'
SlotController = require './slot_controller'
{Duration} = require '../constants'
{StringBuilder} = require 'crafting-guide-common'
@@ -31,6 +32,10 @@ module.exports = class MinimalRecipeController extends BaseController
modPack: @modPack
imageLoader: @imageLoader
@outputSlotController = @addChild SlotController, '.output.view__slot',
imageLoader: @imageLoader
modPack: @modPack
@$outputImg = @$('.output img')
@$outputLink = @$('.output a')
@$outputQuantity = @$('.quantity')
@@ -39,25 +44,8 @@ module.exports = class MinimalRecipeController extends BaseController
refresh: ->
@gridController.model = @model
@$outputImg.attr 'src', '/images/empty.png'
@$outputImg.removeAttr 'alt'
@$outputLink.removeAttr 'href'
@$outputQuantity.html ''
if @model?
outputStack = @model.output[0]
if outputStack?
display = @modPack.findItemDisplay outputStack.itemSlug
@$outputLink.attr 'href', display.itemUrl
@$outputLink.attr 'title', display.itemName
@$outputImg.attr 'alt', display.itemName
@$outputQuantity.html outputStack.quantity if outputStack.quantity > 1
@imageLoader.load display.iconUrl, @$outputImg
@outputSlotController.model = @model?.output?[0]
@$el.tooltip show:{delay:Duration.snap, duration:Duration.fast}
@_refreshTools()
super
src/coffee/controllers/slot_controller.coffee
+58
View File
@@ -0,0 +1,58 @@
###
Crafting Guide - slot_controller.coffee
Copyright (c) 2015 by Redwood Labs
All rights reserved.
###
BaseController = require './base_controller'
########################################################################################################################
module.exports = class SlotController extends BaseController
constructor: (options={})->
if not options.imageLoader? then throw new Error 'options.imageLoader is required'
if not options.modPack? then throw new Error 'options.modPack is required'
# options.model should be a Stack
options.templateName = 'slot'
options.useAnimations = false
super options
@imageLoader = options.imageLoader
@modPack = options.modPack
# BaseController Overrides #####################################################################
onDidRender: ->
@$link = @$('a')
@$image = @$('img')
@$quantity = @$('.quantity')
super
refresh: ->
if @model?
display = @modPack.findItemDisplay @model.itemSlug
@$link.attr 'href', display.itemUrl
@imageLoader.load display.iconUrl, @$image
@show @$image
if @model.quantity > 1
@$quantity.html @model.quantity
else
@$quantity.html ''
else
@$link.removeAttr 'href'
@$quantity.html ''
@$image.removeAttr 'src'
@hide @$image
super
# Backbone.View Overrides ######################################################################
events: ->
return _.extend super,
'click a': 'routeLinkClick'
src/coffee/models/crafting_plan.coffee
+3 -3
View File
@@ -177,7 +177,7 @@ module.exports = class CraftingPlan extends BaseModel
step.multiplier = Math.ceil(@need.quantityOf(step.itemSlug) / recipe.output[0].quantity)
if @includingTools
for stack in recipe.tools
recipe.eachToolStack (stack)=>
itemSlug = @_qualifyItemSlug stack.itemSlug
available = @result.quantityOf(itemSlug) + @need.quantityOf(itemSlug)
needed = Math.max 0, stack.quantity - available
@@ -185,7 +185,7 @@ module.exports = class CraftingPlan extends BaseModel
@need.add itemSlug, needed
@result.add itemSlug, needed
for stack in recipe.input
recipe.eachInputStack (stack)=>
itemSlug = @_qualifyItemSlug stack.itemSlug
needed = step.multiplier * stack.quantity
consumed = Math.min needed, @result.quantityOf itemSlug
@@ -194,7 +194,7 @@ module.exports = class CraftingPlan extends BaseModel
@result.remove itemSlug, consumed
@need.add itemSlug, remaining
for stack in recipe.output
recipe.eachOutputStack (stack)=>
itemSlug = @_qualifyItemSlug stack.itemSlug
created = stack.quantity * step.multiplier
consumed = Math.min created, @need.quantityOf itemSlug
src/coffee/models/parser_versions/mod_version_parser_v1.coffee
+58 -57
View File
@@ -37,15 +37,10 @@ module.exports = class ModVersionParserV1 extends CommandParserVersionBase
_command_extras: (extraTerms...)->
if not @_recipeData? then throw new Error 'cannot declare "extras" before "recipe"'
if @_recipeData.extras? then throw new Error 'duplicate declaration of "extras"'
if @_recipeData.output.length isnt 1 then throw new Error 'duplicate declaration of "extras"'
@_recipeData.extras = []
for term in extraTerms
match = ModVersionParserV1.STACK.exec term
if match?
@_recipeData.extras.push quantity:parseInt(match[1]), name:match[2]
else
@_recipeData.extras.push quantity:1, name:term
@_recipeData.output.push @_parseStack term
_command_gatherable: (gatherable)->
if not @_itemData? then throw new Error 'cannot declare "gatherable" before "item"'
@@ -69,12 +64,10 @@ module.exports = class ModVersionParserV1 extends CommandParserVersionBase
_command_input: (inputNames...)->
if not @_recipeData? then throw new Error 'cannot declare "input" before "recipe"'
if @_recipeData.input? then throw new Error 'duplicate declaration of "input"'
if @_recipeData.input.length isnt 0 then throw new Error 'duplicate declaration of "input"'
@_recipeData.input = []
for name in inputNames
if name.length is 0 then throw new Error 'input names cannot be empty'
@_recipeData.input.push name
@_recipeData.input.push @_parseStack name
_command_pattern: (pattern='')->
if not @_recipeData? then throw new Error 'cannot declare "pattern" before "recipe"'
@@ -90,23 +83,23 @@ module.exports = class ModVersionParserV1 extends CommandParserVersionBase
if @_recipeData.quantity? then throw new Error 'duplicate declaration of "quantity"'
if not ModVersionParserV1.INTEGER.test(quantity) then throw new Error 'quantity must be an integer'
@_recipeData.quantity = parseInt quantity
@_recipeData.quantity = quantity
@_recipeData.output[0].quantity = parseInt quantity
_command_recipe: ->
if not @_itemData? then throw new Error 'cannot delcare "recipe" before "item"'
@_recipeData = line:@_lineNumber
@_recipeData = line:@_lineNumber, input:[], output:[{quantity:1, name:@_itemData.name}], tools:[]
@_itemData.recipes ?= []
@_itemData.recipes.push @_recipeData
_command_tools: (toolNames...)->
if not @_recipeData? then throw new Error 'cannot declare "tools" before "recipe"'
if @_recipeData.tools? then throw new Error 'duplicate declaration of "tools"'
if @_recipeData.tools.length isnt 0 then throw new Error 'duplicate declaration of "tools"'
@_recipeData.tools = []
for name in toolNames
if name.length is 0 then throw new Error 'tool names cannot be empty'
@_recipeData.tools.push name
@_recipeData.tools.push name:name, quantity:1
_command_update: (name='')->
if not name.length > 0 then throw new 'the item name cannot be empty'
@@ -117,6 +110,15 @@ module.exports = class ModVersionParserV1 extends CommandParserVersionBase
@_rawData.items ?= {}
@_rawData.items[name] = @_itemData
# Parsing Helpers ##############################################################################
_parseStack: (stackText)->
match = ModVersionParserV1.STACK.exec stackText
if match?
return quantity:parseInt(match[1]), name:match[2]
else
return quantity:1, name:stackText
# Object Creation Methods ######################################################################
_buildModVersion: (modVersionData, modVersion)->
@@ -148,9 +150,19 @@ module.exports = class ModVersionParserV1 extends CommandParserVersionBase
_buildRecipe: (modVersion, itemData, recipeData)->
@_lineNumber = recipeData.line
if not recipeData.input? then throw new Error 'the "input" declaration is required'
if recipeData.input.length is 0 then throw new Error 'the "input" declaration is required'
if not recipeData.pattern? then throw new Error 'the "pattern" declaration is required'
recipe = new Recipe
input: @_buildStackList modVersion, recipeData.input, recipeData.pattern
output: @_buildStackList modVersion, recipeData.output
pattern: recipeData.pattern
tools: @_buildStackList modVersion, recipeData.tools
modVersion.addRecipe recipe
return recipe
_buildStackList: (modVersion, data, pattern=null)->
createSlug = (name)=>
item = @_rawData.items[name]
if item? and item.type isnt 'update'
@@ -160,46 +172,26 @@ module.exports = class ModVersionParserV1 extends CommandParserVersionBase
modVersion.registerName slug, name
return slug
recipeData.quantity ?= 1
recipeData.extras ?= []
recipeData.tools ?= []
stacks = []
for stackData in data
itemSlug = createSlug stackData.name
stacks.push new Stack itemSlug:itemSlug, quantity:stackData.quantity
inputStacks = []
for name in recipeData.input
inputSlug = createSlug name
inputStacks.push new Stack itemSlug:inputSlug, quantity:0
if pattern?
expectedIndexes = _.reduce [0...stacks.length], ((obj, i)-> obj[i] = true; return obj), {}
for c in pattern
continue if c is '.'
continue if c is ' '
delete expectedIndexes[c]
if not stacks[parseInt(c)]? then throw new Error "there is no item #{c} in this recipe"
for c in recipeData.pattern
continue if c is '.'
continue if c is ' '
stack = inputStacks[parseInt(c)]
if not stack? then throw new Error "there is no input #{c} in this recipe"
stack.quantity += 1
unusedNames = _.map(_.keys(expectedIndexes), ((i)-> data[parseInt(i)].name))
if unusedNames.length > 1
throw new Error "#{unusedNames.join(', ')} are listed for this recipe, but do not appear in the pattern"
else if unusedNames.length is 1
throw new Error "#{unusedNames[0]} is listed for this recipe, but does not appear in the pattern"
for i in [0...inputStacks.length]
stack = inputStacks[i]
if stack.quantity is 0
name = modVersion.findName stack.itemSlug
throw new Error "#{name} is an input for this recipe, but it is not in the pattern"
outputStacks = [ new Stack itemSlug:itemData.slug, quantity:recipeData.quantity ]
for extraData in recipeData.extras
outputSlug = createSlug extraData.name
outputStacks.push new Stack itemSlug:outputSlug, quantity:extraData.quantity
toolStacks = []
for name in recipeData.tools
toolSlug = createSlug name
toolStacks.push new Stack itemSlug:toolSlug, quantity:1
recipe = new Recipe
input: inputStacks
output: outputStacks
pattern: recipeData.pattern
tools: toolStacks
modVersion.addRecipe recipe
return recipe
return stacks
# Un-parsing Methods ###########################################################################
@@ -249,13 +241,22 @@ module.exports = class ModVersionParserV1 extends CommandParserVersionBase
.outdent()
_unparseRecipe: (builder, recipe)->
inputNames = (builder.context.findName(stack.itemSlug) for stack in recipe.input)
inputNames.sort()
inputStacks = recipe.input[..]
inputStacks.sort (a, b)-> Stack.compare a, b
inputNames = []
for stack in inputStacks
name = builder.context.findName stack.itemSlug
if stack.quantity > 1
inputNames.push "#{stack.quantity} #{name}"
else
inputNames.push name
patternMap = {'.', '.'}
for i in [0...recipe.input.length]
stack = recipe.input[i]
patternMap["#{i}"] = "#{inputNames.indexOf builder.context.findName(stack.itemSlug)}"
name = builder.context.findName(stack.itemSlug)
name = "#{stack.quantity} #{name}" if stack.quantity > 1
patternMap["#{i}"] = "#{inputNames.indexOf name}"
pattern = recipe.pattern or recipe.defaultPattern
newPattern = []
src/coffee/models/recipe.coffee
+19 -4
View File
@@ -69,13 +69,27 @@ module.exports = class Recipe extends BaseModel
# Public Methods ###############################################################################
eachInputStack: (callback)->
for i in [0...@pattern.length]
stack = @getStackAtSlot(i)
continue unless stack?
callback stack
eachOutputStack: (callback)->
for stack in @output
callback stack
eachToolStack: (callback)->
for stack in @tools
callback stack
getInputCount: ->
result = 0
for stack in @input
result += stack.quantity
return result
getItemSlugAt: (patternSlot)->
getStackAtSlot: (patternSlot)->
trueIndex = 0:0, 1:1, 2:2, 3:4, 4:5, 5:6, 6:8, 7:9, 8:10
patternDigit = @pattern[trueIndex[patternSlot]]
return null unless patternDigit?
@@ -84,7 +98,7 @@ module.exports = class Recipe extends BaseModel
stack = @input[parseInt(patternDigit)]
return null unless stack?
return stack.itemSlug
return stack
getOutputCount: ->
result = 0
@@ -93,11 +107,12 @@ module.exports = class Recipe extends BaseModel
return result
getQuantityProducedOf: (itemSlug)->
total = 0
for stack in @output
if stack.itemSlug.matches itemSlug
return stack.quantity
total += stack.quantity
return 0
return total
isPassThroughFor: (itemSlug)->
amountCreated = 0
src/coffee/models/simple_stack.coffee
+11
View File
@@ -5,6 +5,8 @@ Copyright (c) 2014-2015 by Redwood Labs
All rights reserved.
###
ItemSlug = require './item_slug'
########################################################################################################################
module.exports = class Stack
@@ -16,6 +18,15 @@ module.exports = class Stack
@itemSlug = attributes.itemSlug
@quantity = attributes.quantity
# Class Methods ################################################################################
@compare: (a, b)->
if a? and not b? then return -1
if not a? and b? then return +1
if a.quantity isnt b.quantity
return if a.quantity > b.quantity then -1 else +1
return ItemSlug.compare a.itemSlug, b.itemSlug
# Object Overrides #############################################################################
toString: ->
src/jade/templates/crafting_grid.jade
+9 -9
View File
@@ -7,14 +7,14 @@
table.view__crafting_grid
tr
td: a: img(src="/images/empty.png")
td: a: img(src="/images/empty.png")
td: a: img(src="/images/empty.png")
td: .view__slot
td: .view__slot
td: .view__slot
tr
td: a: img(src="/images/empty.png")
td: a: img(src="/images/empty.png")
td: a: img(src="/images/empty.png")
td: .view__slot
td: .view__slot
td: .view__slot
tr
td: a: img(src="/images/empty.png")
td: a: img(src="/images/empty.png")
td: a: img(src="/images/empty.png")
td: .view__slot
td: .view__slot
td: .view__slot
src/jade/templates/minimal_recipe.jade
+1 -3
View File
@@ -9,6 +9,4 @@
.input
table.view__crafting_grid
.tool
.output
a: img
p.quantity
.output.view__slot
src/jade/templates/slot.jade
+11
View File
@@ -0,0 +1,11 @@
//-
//- Crafting Guide - slot.jade
//-
//- Copyright (c) 2015 by Redwood Labs
//- All rights reserved.
//-
.view__slot
a
img.hideable.hiding
.quantity
src/scss/templates/index.scss
+1
View File
@@ -26,5 +26,6 @@ All rights reserved.
@import 'mod_page';
@import 'mod_selector';
@import 'stack';
@import 'slot';
@import 'tutorial';
@import 'video';
src/scss/templates/slot.scss
+18
View File
@@ -0,0 +1,18 @@
/*
Crafting Guide - slot.scss
Copyright (C) 2015 by Redwood Labs
All rights reserved.
*/
.view__slot {
position: relative;
.quantity {
position: absolute; right: 0.1em; bottom: 0;
color: white;
font-family: $font-family-header;
font-size: $font-size-large;
text-shadow: -2px -2px 0 #000, 2px -2px 0 #000, -2px 2px 0 #000, 2px 2px 0 #000;
}
}
static/browse/industrial_craft_2/mod-version.cg
-3265
View File
File diff suppressed because it is too large Load Diff
static/data/industrial_craft_2/2.2.663/mod-version.cg
+2 -2
View File
@@ -92,8 +92,8 @@ group: Agriculture
item: (Filled) Tin Can
recipe:
input: Steak, Tin Can
pattern: 101 111 111
input: Steak, 8 Tin Can
pattern: .0. ... .1.
quantity: 8
tools: Canning Machine
recipe:
test/parser_versions/mod_version_parser_v1.test.coffee
+23 -17
View File
@@ -69,10 +69,10 @@ describe 'mod_version_parser_v1.coffee', ->
describe 'input', ->
it 'adds "input" when present', ->
logger.doAtLevel 'DEBUG', ->
modVersion = parser.parse baseText + 'recipe:; input:Alpha, Bravo; pattern: ... 010 ...'
slugs = (s.itemSlug.item for s in modVersion.findRecipes(ItemSlug.slugify('test__charlie'))[0].input)
slugs.should.eql ['alpha', 'bravo']
modVersion = parser.parse baseText + 'recipe:; input:Alpha, Bravo; pattern: ... 010 ...'
charlieSlug = ItemSlug.slugify('test__charlie')
slugs = (s.itemSlug.item for s in modVersion.findRecipes(charlieSlug)[0].input)
slugs.should.eql ['alpha', 'bravo']
it 'requires an "input" declaration', ->
func = -> parser.parse baseText + 'recipe:; pattern: ... .0. ...'
@@ -90,6 +90,14 @@ describe 'mod_version_parser_v1.coffee', ->
modVersion = parser.parse baseText + 'recipe:; input:Delta, Echo, Foxtrot; pattern:...012...'
(s.item for s in modVersion._slugs).should.eql ['charlie', 'delta', 'echo', 'foxtrot']
it 'allows a quantity for each input', ->
modVersion = parser.parse baseText + 'recipe:; input: 12 Delta, 3 Echo; pattern:... 0.1 ...'
recipe = _.values(modVersion._recipes)[0]
recipe.input[0].quantity.should.equal 12
recipe.input[0].itemSlug.qualified.should.equal 'delta'
recipe.input[1].quantity.should.equal 3
recipe.input[1].itemSlug.qualified.should.equal 'echo'
describe 'pattern', ->
it 'adds "pattern" when present', ->
@@ -114,18 +122,11 @@ describe 'mod_version_parser_v1.coffee', ->
it 'requires pattern to only refer to existing items', ->
func = -> parser.parse baseText + 'recipe:; input:Alpha; pattern:... 010 ...'
expect(func).to.throw Error, 'there is no input 1 in this recipe'
expect(func).to.throw Error, 'there is no item 1 in this recipe'
it 'requires all items to appear in the pattern', ->
func = -> parser.parse baseText + 'recipe:; input:Alpha, Bravo; pattern: 000 0.0 000'
expect(func).to.throw Error, 'Bravo is an input'
it 'computes the input stack sizes from the pattern', ->
modVersion = parser.parse baseText + 'recipe:; input:Alpha, Bravo, Delta; pattern:111 .0. 2.2'
recipe = modVersion.findRecipes(ItemSlug.slugify('test__charlie'))[0]
recipe.input[0].quantity.should.equal 1
recipe.input[1].quantity.should.equal 3
recipe.input[2].quantity.should.equal 2
expect(func).to.throw Error, 'Bravo is listed'
it 'does not allow "pattern" before "recipe"', ->
func = -> parser.parse baseText + 'pattern:... .0. ...; recipe:; inputs:Alpha'
@@ -226,10 +227,15 @@ describe 'mod_version_parser_v1.coffee', ->
item: Baked Potato
recipe:
input: Potato, furnace fuel
pattern: .0. ... .1.
input: furnace fuel, Potato
pattern: .1. ... .0.
tools: Furnace
item: (filled) Canned Food
recipe:
input: 4 (Empty) Tin Can, Apple
pattern: .1. .0. ...
group: Functional Blocks
item: Furnace
@@ -240,8 +246,8 @@ describe 'mod_version_parser_v1.coffee', ->
update: Iron Ingot
recipe:
input: Iron Dust, furnace fuel
pattern: .0. ... .1.
input: furnace fuel, Iron Dust
pattern: .1. ... .0.
tools: Furnace
"""
test/recipe.test.coffee
+8 -4
View File
@@ -47,7 +47,7 @@ describe 'recipe.coffee', ->
recipe = new Recipe input:input, pattern:pattern, output:[new Stack itemSlug:ItemSlug.slugify('gold_gear')]
recipe.itemSlug.qualified.should.equal 'gold_gear'
describe 'getItemSlugAt', ->
describe 'getStackAtSlot', ->
beforeEach ->
input = [
@@ -57,13 +57,17 @@ describe 'recipe.coffee', ->
recipe = new Recipe itemSlug:'gold_gear', input:input, pattern:'.1. 101 .1.'
it 'returns the proper item for an early slot', ->
recipe.getItemSlugAt(1).qualified.should.equal 'gold_ingot'
stack = recipe.getStackAtSlot(1)
stack.itemSlug.qualified.should.equal 'gold_ingot'
stack.quantity.should.equal 4
it 'returns the proper item for a late slot', ->
recipe.getItemSlugAt(4).qualified.should.equal 'iron_gear'
stack = recipe.getStackAtSlot(4)
stack.itemSlug.qualified.should.equal 'iron_gear'
stack.quantity.should.equal 1
it 'returns null for an invalid slot', ->
expect(recipe.getItemSlugAt(12)).to.be.null
expect(recipe.getStackAtSlot(12)).to.be.null
describe '_parsePattern', ->