Touch controls on Android not functioning when built properly

[IGJoshua]

Android touch controls don't function seemingly at all when used in a finished apk.

To reproduce:
Single scene in the build settings, containing a camera with an ortho view and a near clipping plane of 0, and a single sprite with the following hook on update:

(defn box-hook
  [this]
  (when (> (count Input/touches) 0)
    (set! (.position (.transform this)) (.ScreenToWorldPoint
                                         Camera/main
                                         (let [pos (.position (first Input/touches))]
                                           (Vector3. (.x pos) (.y pos) 0))))))

Building is done while connected to the device in developer mode after ensuring the android build post-process does not occur in arcadia, and the following code is run in the repl:

(use 'arcadia.compiler)
(aot-namespaces "Assets/Compiled" '[clojure.core game.core])

The resulting .apk should be send to the android device just fine, and run as well, but any touch controls will not function.

NOTE: The above setup works perfectly when using unity remote, touch controls are received properly and can be manipulated any way desired.

[nasser]

Not sure if this is an android specific issue. It might be related to #323 which we have confirmed is happening. Its likely that hooks are being dropped before export as well, resulting in scenes with no clojure code in the exported game.

I tested first on the desktop with

(ns issue-248
  (:import [UnityEngine Input Vector3 Camera])
  (:use arcadia.core))

(defn box-hook-mouse [this k]
  (set!
    (.position (.transform this))
    (.ScreenToWorldPoint Camera/main
                         (let [pos Input/mousePosition]
                           (Vector3. (.x pos) (.y pos) 10)))))

with box-hook-mouse attached to a cube via

(hook+ (object-named "Cube") :update :issue-248 #'box-hook-mouse)

It replicates the posted code above but uses a mouse as input. The game builds, launches and runs without error, and the hooks disappear in the inspector.

On Android I tested with

(ns issue-248
  (:import [UnityEngine Input Vector3 Camera])
  (:use arcadia.core))

(defn box-hook [this k]
  (when (> (count Input/touches) 0)
    (set!
      (.position (.transform this))
      (.ScreenToWorldPoint Camera/main
                           (let [pos (.position (first Input/touches))]
                             (Vector3. (.x pos) (.y pos) 10))))))

with a similar setup as on desktop. Again, everything built and ran without errors, and adb logcat was clean.

[nasser]

This is actually looking like a compiler bug. With #323 fixed, running the above code on Android throws the following in adb logcat

2018-12-07 17:29:26.237 1278-1300/? E/Unity: ArgumentException: The specified path is not of a legal form (empty).
      at System.IO.Path.InsecureGetFullPath (System.String path) [0x00025] in <f2e6809acb14476a81f399aeb800f8f2>:0 
      at System.IO.Path.GetFullPath (System.String path) [0x00000] in <f2e6809acb14476a81f399aeb800f8f2>:0 
      at System.AppDomainSetup.GetAppBase (System.String appBase) [0x00041] in <f2e6809acb14476a81f399aeb800f8f2>:0 
      at System.AppDomainSetup.get_ApplicationBase () [0x00000] in <f2e6809acb14476a81f399aeb800f8f2>:0 
      at System.AppDomain.get_BaseDirectory () [0x00006] in <f2e6809acb14476a81f399aeb800f8f2>:0 
        at (wrapper remoting-invoke-with-check) System.AppDomain.get_BaseDirectory()
      at clojure.lang.RT+<GetFindFilePathsRaw>d__424.MoveNext () [0x00038] in <138b9d0b0b3f4982b42abdb2b77eda11>:0 
      at System.Linq.Enumerable+DistinctIterator`1[TSource].MoveNext () [0x00028] in <10ab7516b28e47f29e5315b70b0be54c>:0 
      at clojure.lang.RT.FindFile (System.String fileName) [0x00021] in <138b9d0b0b3f4982b42abdb2b77eda11>:0 
      at clojure.

The full thing is here

[nasser]

As of 0689ff6 the android code I posted above exports and functions as expected