should set window icon for windows.

desktop/build-osx.json

@@ -4,8 +4,8 @@
     "executable": "Tick's Tales", 
     "appjar": "target/advent-standalone.jar",
     "mainclass": "advent/core/desktop_launcher",
-    "resources": [
-    ],
+    "resources": ["resources/icon" ],
+    "vmargs": ["-Xdock:icon=icon/icon_128x128.png"],
     "minimizejre": "soft",
     "outdir": "target/osx/Tick's Tales.app"
 }

desktop/src/advent/core/desktop_launcher.clj

@@ -1,10 +1,10 @@
 (ns advent.core.desktop-launcher
   (:require [advent.core :refer :all]
             [advent.utils :as utils]
-            )
+            [play-clj.core :refer :all])
   (:import [com.badlogic.gdx.backends.lwjgl LwjglApplication LwjglApplicationConfiguration]
            [org.lwjgl.input Keyboard]
-           [com.badlogic.gdx Gdx])
+           [com.badlogic.gdx Gdx Files$FileType])
   (:gen-class))
 
 
@@ -27,6 +27,11 @@
              (catch Exception e#))))
 
   (let [cfg (LwjglApplicationConfiguration.)]
+    #_(println (.exists (files! :classpath "icon/icon_128x128.png")))
+    (.addIcon cfg "icon/icon_128x128.png" Files$FileType/Classpath)
+    (.addIcon cfg "icon/icon_32x32.png" Files$FileType/Classpath)
+    (.addIcon cfg "icon/icon_16x16.png" Files$FileType/Classpath)
+    
     (if false
       (do
         (set! (.width cfg) (doto (.width (LwjglApplicationConfiguration/getDesktopDisplayMode)) println))