enable only rendering

examples/bullet/core/src/main/java/com/github/xpenatan/gdx/examples/bullet/BulletGame.java

@@ -0,0 +1,11 @@
+package com.github.xpenatan.gdx.examples.bullet;
+
+import com.badlogic.gdx.Game;
+
+public class BulletGame extends Game {
+
+    @Override
+    public void create() {
+        setScreen(new BulletInitScreen(this));
+    }
+}

examples/bullet/core/src/main/java/com/github/xpenatan/gdx/examples/bullet/BulletInitScreen.java

@@ -0,0 +1,28 @@
+package com.github.xpenatan.gdx.examples.bullet;
+
+import com.badlogic.gdx.ScreenAdapter;
+import com.badlogic.gdx.physics.bullet.Bullet;
+
+public class BulletInitScreen extends ScreenAdapter {
+
+    private BulletGame game;
+
+    private boolean bulletInit = false;
+
+    public BulletInitScreen(BulletGame game) {
+        this.game = game;
+    }
+
+    @Override
+    public void show() {
+        Bullet.init(() -> bulletInit = true);
+    }
+
+    @Override
+    public void render(float delta) {
+        if(bulletInit) {
+            bulletInit = false;
+            game.setScreen(new BulletTestScreen());
+        }
+    }
+}