Starting more work on integrating additional languages. Improved Component code editing performance with a trusty debounce.

app/views/editor/level/component/edit.coffee

@@ -25,6 +25,7 @@ module.exports = class LevelComponentEditView extends View
     super options
     @levelComponent = @supermodel.getModelByOriginalAndMajorVersion LevelComponent, options.original, options.majorVersion or 0
     console.log "Couldn't get levelComponent for", options, "from", @supermodel.models unless @levelComponent
+    @onEditorChange = _.debounce @onEditorChange, 1500
 
   getRenderData: (context={}) ->
     context = super(context)
@@ -95,6 +96,7 @@ module.exports = class LevelComponentEditView extends View
     @editor.on('change', @onEditorChange)
 
   onEditorChange: =>
+    return if @destroyed
     @levelComponent.set 'code', @editor.getValue()
     Backbone.Mediator.publish 'level-component-edited', levelComponent: @levelComponent
     null

app/views/editor/level/components_tab_view.coffee

@@ -35,13 +35,13 @@ module.exports = class ComponentsTabView extends View
 
     componentModels = @supermodel.getModels LevelComponent
     componentModelMap = {}
-    componentModelMap[comp.get('original')] = comp for comp in componentModels    
+    componentModelMap[comp.get('original')] = comp for comp in componentModels
     components = ({original: key.split('.')[0], majorVersion: parseInt(key.split('.')[1], 10), thangs: value, count: value.length} for key, value of @presentComponents)
     treemaData = _.sortBy components, (comp) ->
       comp = componentModelMap[comp.original]
       res = [comp.get('system'), comp.get('name')]
       return res
-      
+
     treemaOptions =
       supermodel: @supermodel
       schema: {type: 'array', items: {type: 'object', format: 'level-component'}}

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

@@ -18,23 +18,19 @@ module.exports = class Spell
     @supermodel = options.supermodel
     @skipProtectAPI = options.skipProtectAPI
     @worker = options.worker
-    p = options.programmableMethod
 
+    p = options.programmableMethod
+    @languages = p.languages ? {}
+    @languages.javascript ?= p.source
     @name = p.name
     @permissions = read: p.permissions?.read ? [], readwrite: p.permissions?.readwrite ? []  # teams
-    teamSpells = @session.get('teamSpells')
-    team = @session.get('team') ? 'humans'
-    @useTranspiledCode = @permissions.readwrite.length and ((teamSpells and not _.contains(teamSpells[team], @spellKey)) or (@session.get('creator') isnt me.id and not (me.isAdmin() or 'employer' in me.get('permissions'))) or @spectateView)
-    if @useTranspiledCode
-      console.log "#{@spellKey} is using transpiled code because permissions.readwrite is #{@permissions.readwrite}
-        #{if @spectateView then ', we are spectating' else ''}
-        #{if teamSpells and not _.contains(teamSpells[team], @spellKey) then ', teamSpells[' + team + '] does not have ' + @spellKey + ' (just ' + teamSpells[team] + ')' else ''}
-        #{if @session.get('creator') isnt me.id then ', and the session was created by ' + @session.get('creator') + ' but I am ' + me.id else ''}"
-    @source = @originalSource = p.source
+    @setLanguage if @canWrite() then options.language else 'javascript'
+    @useTranspiledCode = @shouldUseTranspiledCode()
+
+    @source = @originalSource
     @parameters = p.parameters
     if @permissions.readwrite.length and sessionSource = @session.getSourceFor(@spellKey)
       @source = sessionSource
-    @language = if @canWrite() then options.language else 'javascript'
     @thangs = {}
     @view = new SpellView {spell: @, session: @session, worker: @worker}
     @view.render()  # Get it ready and code loaded in advance
@@ -49,6 +45,9 @@ module.exports = class Spell
     @thangs = null
     @worker = null
 
+  setLanguage: (@language) ->
+    @originalSource = @languages[language] ? @languages.javascript
+
   addThang: (thang) ->
     if @thangs[thang.id]
       @thangs[thang.id].thang = thang
@@ -155,3 +154,14 @@ module.exports = class Spell
 
   toString: ->
     "<Spell: #{@spellKey}>"
+
+  shouldUseTranspiledCode: ->
+    # Determine whether this code has already been transpiled, or whether it's raw source needing transpilation.
+    return false unless @permissions.readwrite.length  # Only player-writable code will be stored transpiled.
+    return true if @spectateView  # Use transpiled code for both teams if we're just spectating.
+    teamSpells = @session.get('teamSpells')
+    team = @session.get('team') ? 'humans'
+    return true if teamSpells and not _.contains(teamSpells[team], @spellKey)  # Use transpiled for enemy spells.
+    # Players without permissions can't view the raw code.
+    return true if @session.get('creator') isnt me.id and not (me.isAdmin() or 'employer' in me.get('permissions'))
+    false

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

@@ -619,8 +619,11 @@ module.exports = class SpellView extends View
     @ace.setKeyboardHandler @keyBindings[aceConfig.keyBindings ? 'default']
 
   onChangeLanguage: (e) ->
-    if @spell.canWrite()
-      @aceSession.setMode @editModes[e.language]
+    return unless @spell.canWrite()
+    @aceSession.setMode @editModes[e.language]
+    wasDefault = @getSource() is @spell.originalSource
+    @spell.setLanguage e.language
+    @reloadCode true if wasDefault
 
   dismiss: ->
     @spell.hasChangedSignificantly @getSource(), null, (hasChanged) =>