gistfile1.coffee

$(document).ready ->
  gSmallShadow: new google.maps.MarkerImage("http://labs.google.com/ridefinder/images/mm_20_shadow.png", new google.maps.Size(22, 20), new google.maps.Point(0, 0), new google.maps.Point(6, 20))
  gYellowIcon: new google.maps.MarkerImage("http://labs.google.com/ridefinder/images/mm_20_yellow.png", new google.maps.Size(12, 20), new google.maps.Point(0, 0), new google.maps.Point(6, 20))
  places: {}

  updatePlaces: ->
    bounds: map.getBounds()
    ne: bounds.getNorthEast()
    sw: bounds.getSouthWest()
    $.ajax({
	    url: "/api/near_me"
	    dataType: "json"
	    data: {
		    ne_latitude:  ne.lat()
		    ne_longitude: ne.lng()
		    sw_latitude:  sw.lat()
		    sw_longitude: sw.lng()
		    }
      success: (data) ->
        new_places: {}
        for place in data
          new_places["${ place.id }"]: new google.maps.Marker({
	          position: new google.maps.LatLng(place.latitude, place.longitude)
	          map:      map
	          title:    place.name
	          icon:     gYellowIcon
	          shadow:   gSmallShadow
	          })
        for id, place2 of places
          if not new_places[id]?
            place2.setMap(null)
            delete(places[id])
    })

  setCurrentLocation: ->
    $.ajax({
	    url: "/api/current_location"
	    dataType: "json"
	    success: (data) ->
        current_lat_lng: new google.maps.LatLng(data.centroid_lat, data.centroid_lon)
        player: new google.maps.Marker({
	        position:  current_lat_lng
	        map:       map
	        title:     "You"
	        draggable: true
	        })
        map.setZoom(13)
        map.setCenter(current_lat_lng)

        for event_name in ["dragend", "zoom_changed"]
          google.maps.event.addListener(map, event_name, ( -> updatePlaces() ) )

        google.maps.event.addListener(player, "dragend", (mouse_event) ->
          endpoint: player.getPosition()
          $.ajax({
	          type: "POST"
	          url: "/api/move"
	          data: {
		          latitude:  endpoint.lat()
		          longitude: endpoint.lng()
	            }
	          dataType: "json"
            success: (data) ->
              current_lat_lng: new google.maps.LatLng(data.centroid_lat, data.centroid_lon)
              player.setPosition(current_lat_lng)
              map.panTo(current_lat_lng)
              updatePlaces()
            })
          )
      })