Hover debugger optimization for "this"

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

@@ -134,7 +134,9 @@ module.exports = class DebugView extends View
     
   update: ->
     if @variableChain
-      if @workerIsSimulating
+      if @variableChain.length is 2 and @variableChain[0] is "this"
+        @setTooltipKeyAndValue(@variableChain.join("."),@stringifyValue(@thang[@variableChain[1]],0))
+      else if @workerIsSimulating
         @setTooltipText("World is simulating, please wait...")
       else if @currentFrame is @lastFrameRequested and (cacheValue = @retrieveValueFromCache(@thang.id, @spell.name, @variableChain, @currentFrame))
         @setTooltipKeyAndValue(@variableChain.join("."),cacheValue)
@@ -155,7 +157,40 @@ module.exports = class DebugView extends View
     else
       @notifyPropertyHovered()
     @updateMarker()
+    
+  stringifyValue: (value, depth) ->
+    return value if not value or _.isString value
+    if _.isFunction value
+      return if depth is 2 then undefined else "<Function>"
+    return "<this #{value.id}>" if value is @thang and depth
+    if depth is 2
+      if value.constructor?.className is "Thang"
+        value = "<#{value.type or value.spriteName} - #{value.id}, #{if value.pos then value.pos.toString() else 'non-physical'}>"
+      else
+        value = value.toString()
+      return value
 
+    isArray = _.isArray value
+    isObject = _.isObject value
+    return value.toString() unless isArray or isObject
+    brackets = if isArray then ["[", "]"] else ["{", "}"]
+    size = _.size value
+    return brackets.join "" unless size
+    values = []
+    if isArray
+      for v in value
+        s = @stringifyValue(v, depth + 1)
+        values.push "" + s unless s is undefined
+    else
+      for key in value.apiProperties ? _.keys value
+        s = @stringifyValue(value[key], depth + 1)
+        values.push key + ": " + s unless s is undefined
+    sep = '\n' + ("  " for i in [0 ... depth]).join('')
+    prefix = value.constructor?.className
+    prefix ?= "Array" if isArray
+    prefix ?= "Object" if isObject
+    prefix = if prefix then prefix + " " else ""
+    return "#{prefix}#{brackets[0]}#{sep}  #{values.join(sep + '  ')}#{sep}#{brackets[1]}"
   notifyPropertyHovered: =>
     clearTimeout @hoveredPropertyTimeout if @hoveredPropertyTimeout
     @hoveredPropertyTimeout = null
@@ -163,6 +198,7 @@ module.exports = class DebugView extends View
     @hoveredProperty = if @variableChain?.length is 2 then owner: @variableChain[0], property: @variableChain[1] else {}
     unless _.isEqual oldHoveredProperty, @hoveredProperty
       Backbone.Mediator.publish 'tome:spell-debug-property-hovered', @hoveredProperty
+      
   updateMarker: ->
     if @marker
       @ace.getSession().removeMarker @marker