Can now drag the mouse to move around the map.

app/lib/surface/Camera.coffee

@@ -40,6 +40,8 @@ module.exports = class Camera extends CocoClass
     'camera-zoom-out': 'onZoomOut'
     'surface:mouse-scrolled': 'onMouseScrolled'
     'level:restarted': 'onLevelRestarted'
+    'sprite:mouse-down': 'onMouseDown'
+    'sprite:dragged': 'onMouseDragged'
 
   # TODO: Fix tests to not use mainLayer
   constructor: (@canvasWidth, @canvasHeight, angle=Math.asin(0.75), hFOV=d2r(30)) ->
@@ -164,6 +166,21 @@ module.exports = class Camera extends CocoClass
       target = @target
     @zoomTo target, newZoom, 0
 
+  onMouseDown: (e) ->
+    return if @dragDisabled
+    @lastPos = {x: e.originalEvent.rawX, y: e.originalEvent.rawY}
+    
+  onMouseDragged: (e) ->
+    return if @dragDisabled
+    target = @boundTarget(@target, @zoom)
+    newPos = {
+      x: target.x + (@lastPos.x - e.originalEvent.rawX) / @zoom
+      y: target.y + (@lastPos.y - e.originalEvent.rawY) / @zoom
+    }
+    @zoomTo newPos, @zoom, 0
+    @lastPos = {x: e.originalEvent.rawX, y: e.originalEvent.rawY}
+    Backbone.Mediator.publish 'camera:dragged'
+    
   onLevelRestarted: ->
     @setBounds(@firstBounds, false)
 

app/lib/surface/SpriteBoss.coffee

@@ -13,7 +13,7 @@ module.exports = class SpriteBoss extends CocoClass
     'bus:player-left': 'onPlayerLeft'
     'level-set-debug': 'onSetDebug'
     'level-highlight-sprites': 'onHighlightSprites'
-    'sprite:mouse-down': 'onSpriteMouseDown'
+    'sprite:mouse-up': 'onSpriteMouseUp'
     'surface:stage-mouse-down': 'onStageMouseDown'
     'level-select-sprite': 'onSelectSprite'
     'level-suppress-selection-sounds': 'onSuppressSelectionSounds'
@@ -21,6 +21,7 @@ module.exports = class SpriteBoss extends CocoClass
     'level:restarted': 'onLevelRestarted'
     'god:new-world-created': 'onNewWorld'
     'tome:cast-spells': 'onCastSpells'
+    'camera:dragged': 'onCameraDragged'
 
   constructor: (@options) ->
     super()
@@ -226,8 +227,12 @@ module.exports = class SpriteBoss extends CocoClass
   onSelectSprite: (e) ->
     @selectThang e.thangID, e.spellName
 
-  onSpriteMouseDown: (e) ->
+  onCameraDragged: ->
+    @dragged = true
+
+  onSpriteMouseUp: (e) ->
     return if key.shift and @options.choosing
+    return @dragged = false if @dragged
     sprite = if e.sprite?.thang?.isSelectable then e.sprite else null
     @selectSprite e, sprite
 

app/views/editor/level/thangs_tab_view.coffee

@@ -144,6 +144,7 @@ module.exports = class ThangsTabView extends View
     @surface.playing = false
     @surface.setWorld @world
     @surface.camera.zoomTo({x:262, y:-164}, 1.66, 0)
+    @surface.camera.dragDisabled = true
 
   destroy: ->
     @selectAddThangType null