Fixed WorldSelectModal scale; added an easy way to restrict flexible regions to a fixed ratio.

app/lib/surface/RegionChooser.coffee

@@ -22,7 +22,7 @@ module.exports = class RegionChooser extends CocoClass
   onMouseMove: (e) =>
     return unless @firstPoint
     @secondPoint = @options.camera.screenToWorld {x: e.stageX, y: e.stageY}
-    @restrictRegion() if @options.restrictRatio
+    @restrictRegion() if @options.restrictRatio or key.alt
     @updateShape()
 
   onMouseUp: (e) =>

app/lib/surface/Surface.coffee

@@ -488,7 +488,7 @@ module.exports = Surface = class Surface extends CocoClass
   #- Canvas callbacks
 
   onResize: (e) =>
-    return if @destroyed
+    return if @destroyed or @options.choosing
     oldWidth = parseInt @canvas.attr('width'), 10
     oldHeight = parseInt @canvas.attr('height'), 10
     aspectRatio = oldWidth / oldHeight

app/templates/editor/level/modal/world_select.jade

@@ -24,9 +24,14 @@ block modal-body-content
       div.alert.alert-info
         strong Shift-drag
         |  to select
-    div.alert.alert-info 
-      strong Enter
-      |  to confirm
+    if flexibleRegion
+      div.alert.alert-info
+        strong Alt-shift-drag
+        |  to select ratio
+    else
+      div.alert.alert-info
+        strong Enter
+        |  to confirm
   canvas(width=924, height=589)
 
 block modal-footer-content

app/views/editor/level/modals/WorldSelectModal.coffee

@@ -31,11 +31,11 @@ module.exports = class WorldSelectModal extends ModalView
   getRenderData: (c={}) =>
     c = super(c)
     c.selectingPoint = @dataType is 'point'
+    c.flexibleRegion = @dataType is 'region'
     c
 
   afterInsert: ->
     super()
-    window.e = @$el
     @initSurface()
 
   # surface setup
@@ -54,7 +54,6 @@ module.exports = class WorldSelectModal extends ModalView
       thangTypes: @supermodel.getModels(ThangType)
       showInvisible: true
     }
-    window.s = @surface
     @surface.playing = false
     @surface.setWorld @world
     @surface.camera.zoomTo({x: 262, y: -164}, 1.66, 0)