def getLoaders(screenCols:Int, screenRows:Int, tooltipId:WindowId):Coroutine[WorldPanel] = {
    val seed = 0//System.nanoTime
    val worldSize = 256
    val cols = worldSize
    val rows = worldSize

    val minimapSize = WorldPanel.minimapSize
    val bgColor = Color.Blue
    println("Seed: " + seed + "L")
    val date = DateConstants(framesPerDay = 60*60*24*60)
    val perlin = PerlinParams(worldSize/4, 8, worldSize, seed)
    val worldParams = WorldParams(minimapSize, perlin, date)

    import loading._
    Yield(0, "Loading region data", () => {
    val (altRegions, latRegions, surfaceRegions) = Loads.loadRegionMaps.get
    val latMap = new LatitudeMap(cols, rows, latRegions)
    Yield(12, "Loading biome data", () => {
    val biomes = Loads.loadBiomes(latRegions, altRegions, surfaceRegions).get
    Yield(25, "Generating noise", () => {
    val noise = new PerlinNoise(worldParams.perlin).render
    Yield(34, "Generating surface features", () => {
    val surface = new SurfaceMap(noise, worldParams.perlin, surfaceRegions)
    Yield(50, "Generating wind currents", () => {
    val windMap = new StaticWindMap(surface.heightMap, 10000, 1, seed)
    Yield(62, "Plotting average rainfall", () => {
    val moistureMap = new MoistureMap(surface, latMap.latitude, windMap.arrows, 0.5, cols/2, seed)
    Yield(75, "Choosing biomes", () => {
    val biomeMap = new BiomeMap(moistureMap, surface, latMap, altRegions, biomes)
    Yield(88, "Constructing ecosphere", () => {
    val eco = Ecosphere.buildEcosphere(worldParams, latMap, noise, surface, windMap, moistureMap, biomeMap, surfaceRegions, latRegions, altRegions, Vector())
    val world = World.create(worldParams, eco)
    val mapWidth = WorldPanel.computeMapWidth(screenCols)
    val sideWidth = WorldPanel.computeSideWidth(screenCols)
    val mapRect = Recti(sideWidth + 2, 1, mapWidth - 3, screenRows - 2)

    val worldPanel = WorldPanel.create(mapRect, minimapSize, worldSize, world, worldParams, tooltipId)
    Return(() => {
      worldPanel
    })
    })
    })
    })
    })
    })
    })
    })
    })
  }