Mobile scrolling fix

core/src/io/anuke/mindustry/game/MusicControl.java

@@ -134,7 +134,7 @@ public class MusicControl{
 
     /** Plays a music track once and only once. If something is already playing, does nothing.*/
     private void playOnce(@NonNull Music music){
-        if(current != null) return; //do not interrupt already-playing tracks
+        if(current != null || music == null) return; //do not interrupt already-playing tracks
 
         //save last random track played to prevent duplicates
         lastRandomPlayed = music;

core/src/io/anuke/mindustry/input/MobileInput.java

@@ -67,7 +67,33 @@ public class MobileInput extends InputHandler implements GestureListener{
 
     public MobileInput(){
         Events.on(ClientLoadEvent.class, e -> {
-            Core.input.addProcessor(new GestureDetector(20, 0.5f, 0.4f, 0.15f, this));
+            GestureDetector dec = new GestureDetector(20, 0.5f, 0.4f, 0.15f, this){
+                boolean clearMouse = false;
+
+                @Override
+                public boolean touchDown(int x, int y, int pointer, KeyCode button){
+                    if(Core.scene.hasMouse(x, y)){
+                        clearMouse = true;
+                        return false;
+                    }
+                    return super.touchDown(x, y, pointer, button);
+                }
+
+                @Override
+                public boolean touchDragged(int x, int y, int pointer){
+                    if(!clearMouse){
+                        return super.touchDragged(x, y, pointer);
+                    }
+                    return false;
+                }
+
+                @Override
+                public boolean touchUp(int x, int y, int pointer, KeyCode button){
+                    clearMouse = false;
+                    return super.touchUp(x, y, pointer, button);
+                }
+            };
+            Core.input.getInputProcessors().insert(0, dec);
         });
     }