Upgrade project to libgdx 1.12.1

android/proguard-rules.pro

@@ -8,7 +8,7 @@
 # include property in project.properties.
 #
 # For more details, see
-#   http://developer.android.com/guide/developing/tools/proguard.html
+#   https://developer.android.com/guide/developing/tools/proguard.html
 
 # Add any project specific keep options here:
 
@@ -23,17 +23,11 @@
 
 -dontwarn android.support.**
 -dontwarn com.badlogic.gdx.backends.android.AndroidFragmentApplication
--dontwarn com.badlogic.gdx.utils.GdxBuild
--dontwarn com.badlogic.gdx.physics.box2d.utils.Box2DBuild
--dontwarn com.badlogic.gdx.jnigen.BuildTarget*
--dontwarn com.badlogic.gdx.graphics.g2d.freetype.FreetypeBuild
 
+# Needed by the gdx-controllers official extension.
 -keep class com.badlogic.gdx.controllers.android.AndroidControllers
 
--keepclassmembers class com.badlogic.gdx.backends.android.AndroidInput* {
-   <init>(com.badlogic.gdx.Application, android.content.Context, java.lang.Object, com.badlogic.gdx.backends.android.AndroidApplicationConfiguration);
-}
-
+# Needed by the Box2D official extension.
 -keepclassmembers class com.badlogic.gdx.physics.box2d.World {
    boolean contactFilter(long, long);
    void    beginContact(long);
@@ -43,3 +37,15 @@
    boolean reportFixture(long);
    float   reportRayFixture(long, float, float, float, float, float);
 }
+
+# You will need the next three lines if you use scene2d for UI or gameplay.
+# If you don't use scene2d at all, you can remove or comment out the next line:
+-keep public class com.badlogic.gdx.scenes.scene2d.** { *; }
+# You will need the next two lines if you use BitmapFont or any scene2d.ui text:
+-keep public class com.badlogic.gdx.graphics.g2d.BitmapFont { *; }
+# You will probably need this line in most cases:
+-keep public class com.badlogic.gdx.graphics.Color { *; }
+
+# These two lines are used with mapping files; see https://developer.android.com/build/shrink-code#retracing
+-keepattributes LineNumberTable,SourceFile
+-renamesourcefileattribute SourceFile