Fixed selective includeFlow.

app/views/play/level/tome/spell_debug_view.coffee

@@ -21,6 +21,9 @@ module.exports = class DebugView extends View
     @ace = options.ace
     @thang = options.thang
     @variableStates = {}
+    @globals = {Math: Math, _: _}  # ... add more as documented
+    for className, klass of serializedClasses
+      @globals[className] = klass
     @onMouseMove = _.throttle @onMouseMove, 25
 
   afterRender: ->
@@ -35,7 +38,7 @@ module.exports = class DebugView extends View
     pos = e.getDocumentPosition()
     endOfDoc = pos.row is @ace.getSession().getDocument().getLength() - 1
     it = new TokenIterator e.editor.session, pos.row, pos.column
-    isIdentifier = (t) -> t and (t.type is 'identifier' or t.value is 'this' or window[t.value])
+    isIdentifier = (t) => t and (t.type is 'identifier' or t.value is 'this' or @globals[t.value])
     while it.getCurrentTokenRow() is pos.row and not isIdentifier(token = it.getCurrentToken())
       it.stepBackward()
       break unless token
@@ -54,7 +57,7 @@ module.exports = class DebugView extends View
         token = prev
         start = it.getCurrentTokenColumn()
         chain.unshift token.value
-    if token and (token.value of @variableStates or token.value is "this" or window[token.value])
+    if token and (token.value of @variableStates or token.value is "this" or @globals[token.value])
       @variableChain = chain
       offsetX = e.domEvent.offsetX ? e.clientX - $(e.domEvent.target).offset().left
       offsetY = e.domEvent.offsetY ? e.clientY - $(e.domEvent.target).offset().top
@@ -132,7 +135,7 @@ module.exports = class DebugView extends View
         value = @thang
       else if i is 0
         value = @variableStates[prop]
-        if typeof value is "undefined" then value = window[prop]
+        if typeof value is "undefined" then value = @globals[prop]
       else
         value = value[prop]
       keys.push prop

app/views/play/level/tome/spell_view.coffee

@@ -452,11 +452,11 @@ module.exports = class SpellView extends View
       markerRange.end.detach()
       @aceSession.removeMarker markerRange.id
     @markerRanges = []
-    @debugView.setVariableStates {}
     @aceSession.removeGutterDecoration row, 'executing' for row in [0 ... @aceSession.getLength()]
     $(@ace.container).find('.ace_gutter-cell.executing').removeClass('executing')
     if not executed.length or (@spell.name is "plan" and @spellThang.castAether.metrics.statementsExecuted < 20)
       @toolbarView?.toggleFlow false
+      @debugView.setVariableStates {}
       return
     lastExecuted = _.last executed
     @toolbarView?.toggleFlow true
@@ -464,6 +464,7 @@ module.exports = class SpellView extends View
     @toolbarView?.setCallState states[currentCallIndex], statementIndex, currentCallIndex, @spellThang.castAether.metrics
     marked = {}
     lastExecuted = lastExecuted[0 .. @toolbarView.statementIndex] if @toolbarView?.statementIndex?
+    gotVariableStates = false
     for state, i in lastExecuted
       [start, end] = state.range
       clazz = if i is lastExecuted.length - 1 then 'executing' else 'executed'
@@ -473,6 +474,7 @@ module.exports = class SpellView extends View
         markerType = "fullLine"
       else
         @debugView.setVariableStates state.variables
+        gotVariableStates = true
         markerType = "text"
       markerRange = new Range start.row, start.col, end.row, end.col
       markerRange.start = @aceDoc.createAnchor markerRange.start
@@ -480,6 +482,7 @@ module.exports = class SpellView extends View
       markerRange.id = @aceSession.addMarker markerRange, clazz, markerType
       @markerRanges.push markerRange
       @aceSession.addGutterDecoration start.row, clazz if clazz is 'executing'
+    @debugView.setVariableStates {} unless gotVariableStates
     null
 
   highlightComments: ->

app/views/play/level/tome/tome_view.coffee

@@ -151,9 +151,15 @@ module.exports = class TomeView extends View
     @cast()
 
   cast: ->
-    for spellKey, spell of @spells
-      for thangID, spellThang of spell.thangs
-        spellThang.aether.options.includeFlow = spellThang.aether.originalOptions.includeFlow = spellThang is @spellView?.spellThang
+    if @options.levelID is 'project-dota'
+      # For performance reasons, only includeFlow on the currently Thang.
+      for spellKey, spell of @spells
+        for thangID, spellThang of spell.thangs
+          hadFlow = Boolean spellThang.aether.options.includeFlow
+          willHaveFlow = spellThang is @spellView?.spellThang
+          spellThang.aether.options.includeFlow = spellThang.aether.originalOptions.includeFlow = willHaveFlow
+          spellThang.aether.transpile spell.source unless hadFlow is willHaveFlow
+          #console.log "set includeFlow to", spellThang.aether.options.includeFlow, "for", thangID, "of", spellKey
     Backbone.Mediator.publish 'tome:cast-spells', spells: @spells
 
   onToggleSpellList: (e) ->