Might only be answerable with libGDX skills.
MyGame.java:
public void create() { // gets called after constructor
Resources.setInstance(new Resources());
}
Resources.java
public static void setInstance(Resources res) {
if (instance != null) {
instance = res;
}
else throw new IllegalStateException(
"instance cant be null");
}
Stacktrace:
Exception in thread "LWJGL Application" java.lang.IllegalStateException: instance cant be null
at com.mutant.td.Resources.setInstance(Resources.java:22)
at com.mutant.td.SpeciesWarGame.create(SpeciesWarGame.java:41)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:143)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:120)
I have literally no idea what is going on.
This is wrong:
if (instance != null)
You're checking the wrong thing here. You should be checking:
if (res != null)
As this is the thing you're passing into your method.