# 1.0.0-dev.13 7/23/14
7/23/14 #50 fix exclusions feature in game, add debug output (enabled via 'console' query parameter)
7/23/14 #85 instantiate bar charts and balances scales on demand, ensure that their bounds are never empty to prevent 'Martix was suspicious' assertion failure
7/23/14 #84 use different shades of 'black' to differentiate between 'over' and 'activated' for pickers
# 1.0.0-dev.12 7/22/14
7/22/14 Intro: right-align Tools combo box with products box
7/22/14 #83 fix IntroductionModel.reset
7/21/14 fix level-completed dialog so that it shows time when timer is enabled
# 1.0.0-dev.11 7/21/14
7/21/14 #82 bug fixes to GamePlayNode
7/21/14 #81 BoxNode: add molecules on demand, use visibility to display the correct number of molecules
7/21/14 #82 clean up of GamePlayNode and GameView
7/21/14 #82 factor out GamePlayNode, create it on demand (when first level-selection is made)
7/21/14 #82 optimize start up: initialize 'bar charts' and 'balance scales' representations on demand
# 1.0.0-dev.10 7/21/14
7/21/14 #69 BalanceScaleNode: optimization fixes, refactoring and cleanup
7/21/14 #69 BalanceScaleNode: create atoms on demand, use visibility to display the correct number of atoms
7/21/14 #69 rebuild scales only when equation changes, otherwise update counts for each scale
7/21/14 #69 reuse everything except atoms in BalanceScaleNode
7/21/14 #69 handle highlighting correctly in BalanceScaleNode
7/20/14 #70 add AACT to credits
7/18/14 #80 expand touchArea for radio buttons in Introduction screen
7/18/14 #69 clean up BalanceScaleNode constructor
7/18/14 #69 pass properties to BalanceScaleNode for number of atoms on each side of the scale (properties not observed yet)
7/18/14 #69 defer creation of 'Show Why' content until the button is pressed
7/18/14 #79 fix horizontal layout of bars that have arrows at top
7/18/14 #69 update numberOfAtomProperty instead of rebuilding bars when equation coefficients change
7/18/14 add Equation.toString to make inspection easier in debugger
7/18/14 #69 BarNode: fix vertical position whenever bar changes, wire up to numberOfAtomsProperty after VBox.call
7/18/14 #69 eliminate unnecessary computation of atom counts in BarChartsNode, clean up
7/18/14 add horizontal strut to BarNode, to prevent things from shifting horizontally when #atoms is zero vs non-zero
7/18/14 #69 move responsibility for observing Equation.balanced into EqualityOperatorNode
7/18/14 #69 move responsibility for observing equation terms into BoxNode
7/18/14 clean up wiring of coefficients observer
7/18/14 move responsibility for observing Equation.balanced into RightArrowNode
7/18/14 wire BCEFaceNode to Equation.balancedProperty instead of coefficients
7/18/14 #78 Equation: don't call observer until it has been added to all coefficients
7/16/14 #69 make BarNode mutable (but not used yet in BarChartsNode)
7/16/14 game: order equations in pools so that layout special-cases are at the beginning of the pools, to simplify testing
7/16/14 move utility for counting atoms from Equation to AtomCount
7/16/14 delete Equation.createName, specify names in IntroductionModel
7/16/14 inherit(Object,AtomCount)
7/16/14 make Equation.setAtomCounts private static
7/16/14 doc and renaming in BarChartsNode
7/16/14 clean up vertical positioning of BarChartsNode
7/16/14 move happy-face logic into BCEFaceNode
7/16/14 clean up vertical positioning of BalanceScalesNode
7/16/14 clean up BoxNode and BoxesNode
7/16/14 clean up BarNode
7/16/14 clean up FulcrumNode
7/16/14 simplify how equation interactivity is disabled in the game, use pickable:false
7/16/14 #77 balance scale: specify {transformBounds:true} for beam and pile of atoms, so that bounds are accurate for layout
7/15/14 #29 factor out duplicate code in GameFeedbackDialog
# 1.0.0-dev.9 7/15/14
7/15/14 #77 add debug code for shown bounds of the 'balance scales' representation
7/14/14 fix in GameModel.startGame: reset currentEquationIndex before using it to choose currentEquation
7/14/14 #29 move Next, Try Again, and Show Answer buttons into game feedback dialog (when appropriate), remove from play area
7/14/14 #76 replace complicated game popup types (5 files) with a single type, GameFeedbackDialog
7/14/14 #69 use visible instead of add/removeChild to transition between level-selection and game-play interfaces
7/14/14 #69 update bar charts and balance scales only when they are visible
7/14/14 remove erroneous font option from Image constructors in ToolsComboBox
7/14/14 misc doc and formatting
7/14/14 remove unnecessary equation field in nodes that observe equationProperty, get value from equationProperty
7/14/14 GameModel: rename some properties
7/14/14 Game: move challengesPerGame property from view to model
7/14/14 remove coupling between EquationChoiceNode and IntroductionModel
7/14/14 rename IntroductionModel.currentEquation to equation
7/14/14 remove coupling between BoxesNode and models
7/14/14 give GameModel.currentEquation a non-null initial value, to prevent the recurring problems that this had been causing
7/14/14 Game: convert Properties that are not observed to simple fields (currentPoints, attempts, balancedRepresentation, isNewBestTime)
7/14/14 fix in GameView, where current equation is undefined until a level is selected (on startup and on reset)
7/14/14 Game: move timerEnabled property to view
7/14/14 Intro: move balancedRepresentation property from model to view
7/14/14 move view-specific properties out of models (soundEnabled, reactantsBoxExpanded, productsBoxExpanded)
7/14/14 change Equation.balancedAndSimplified from a Property to a field, nothing observes it
7/14/14 #27 change minX for reactant terms to left-edge of box, to fix layout problem with C2H5OH + 3O2 -> 2CO2 + 3H2O
7/14/14 remove weird couplings where HorizontalAligner was providing information about vertical dimension
7/14/14 completed HorizontalAligner refactor
7/14/14 first phase of HorizontalAligner refactor
7/14/14 internal cleanup of HorizontalAligner
7/14/14 fill in correct coefficients only when 'playAll' query parameter is set
7/14/14 encapsulate and document query parameters in BCEQueryParameters
7/14/14 #66 remove 'move' feature from game dialog
# 1.0.0-dev.8 7/11/14
7/11/14 remove erroneous RSC credit, no funding was provided for this sim according to KP
7/11/14 #27 move initial position of game dialog up, to account for shorter game boxes, so that dialog doesn't cover buttons
7/11/14 #27 reduce height of game boxes from 360 to 340, which still looks comfortable for PCl5
7/11/14 #27 move reverse of C2H5OH equation to 2nd location in level-3 pool
# 1.0.0-dev.7 7/11/14
7/11/14 #27 move equations that present layout problems to the beginning of their pools, so that they are displayed first in dev testing
7/11/14 when running in dev mode, fill in the correct coefficients in all pickers
7/11/14 #74 add 'Skip' button to game in dev mode
7/11/14 #71 scale diameter of starts in LevelCompletedNode for levels with lots of stars
7/11/14 #71 support different numbers of equations per game level, to support 'playAll' query parameter
7/11/14 #72 show correct coefficients when running in dev mode
7/11/14 #71 add 'playAll' query parameter, to iterate over all possible challenges in the game
7/10/14 #55 check that both timerID and intervalID are null, so that vegas.NumberPicker doesn't get stuck
# 1.0.0-dev.6 7/7/14
7/7/14 #27 add option to specify font size for equations, so that we can have screen-specific sizes
7/7/14 adjust layout of pickers relative to symbols
7/7/14 fix: when pressing 'Continue' button at end of game, remove reward only if it exists
7/7/14 move initial position of game dialog down slightly
7/7/14 #67 more sophisticated drag bounds for game dialog, accounts for dialog dimensions
7/7/14 #67 crude drag bounds for game dialog
7/7/14 #67 clean up how location of game dialog is handled, in preparation for enforcing drag bounds
7/7/14 rename GameModel.gameState to GameModel.states
7/7/14 factor out private constants in game model
7/7/14 rename Molecule.imageConstructor to nodeConstructor, since molecules are scenery Nodes, not images
7/7/14 pull out Molecule into its own js file, since its public interface is used outside of MoleculeFactory
7/7/14 remove width and height from the model, it is relevant only to the view
7/7/14 #68 scale game buttons uniformly to fit the horizontal space between the boxes
7/7/14 fix Tools combo box, so that its pop-up list is always on top
7/7/14 use relative layout for IntroductionView
7/7/14 reorder IntroductionView to correspond to top-to-bottom layout of nodes
7/7/14 clean up implementation of 'Tools' combo box
7/7/14 Introduction: left-align radio buttons with reactants box
7/7/14 Introduction: remove Reset All button from equation-choice control
7/7/14 rename StartGameLevelNode to LevelSelectionNode, fix constructor name
7/7/14 use named constructors for subtypes of GamePopupNode
7/7/14 simplify implementation of GamePopupNode
7/7/14 add subtle shadow to game dialog, so that it looks like a dialog and stands out from the reactants/products boxes
7/7/14 increase x-margin on game dialog
# 1.0.0-dev.5 7/7/14
7/7/14 #58 replace scoreboard 'panel' with 'bar'
# 1.0.0-dev.4 7/7/14
7/2/14 #60 align bottom of game buttons with bottom of boxes
7/2/14 #37 implemented the game reward
7/2/14 restructure GameFactory as a singleton
7/2/14 fix an assertion bug in BarChartsNode
7/2/14 #57 use inherit(Object,...) instead of prototype assignment
7/2/14 replace 'Author:' with @author annotation in JSdoc
7/2/14 fix an assertion bug in BalanceScalesNode
7/2/14 add/remove blank lines to match typical PhET formatting
7/2/14 #45 replace obtuse method of calling game initializer with a switch statement
7/2/14 #56 add a smiley face to Introduction screen that appears when equation is balanced
7/2/14 #62 relocate 'move' icon to upper-left of game dialog
6/25/14 #29 game dialogs: reduce font size, reduce vertical spacing, reduce size of X and check mark
# 1.0.0-dev.3 6/23/14
6/23/14 #27 uniformly reduce size of terms and arrow in equations
6/23/14 #29 address space problems with 'balanced / not balanced' dialog
6/23/14 change color of game buttons to 'yellow'
6/19/14 design decision: default to game timer off in all sims
6/19/14 replace Check-Mark-u2713.png and Heavy-Ballot-X-u2718.png with ShadowText
6/19/14 #41 create icon for 'Introduction' screen programmatically
6/19/14 #41 create icon for 'Game' screen programmatically
6/19/14 EquationTerm: change unused constructor parameter (actualCoefficient) to an option
6/19/14 Equation: replace overriding of getName with options.name
6/19/14 #36 add credits for About dialog
6/19/14 #33 disable the 'Check' button in the game when all coefficients are zero
6/17/14 #42 add missing entries in images/license.txt
6/17/14 #22 remove unused strings from balancing-chemical-equations_en.strings
# 1.0.0-dev.2 6/16/14
6/16/14 #17 use default "Start Over" for button label on scoreboard
# 1.0.0-dev.1 6/16/14
6/3/14 #13 stroke atoms
3/20/14 port images and strings from Java SVN repository
3/20/14 create basic directory structure and top-level files
3/20/14 created GitHub repository