diff --git a/src/mightypork/gamecore/core/init/InitTaskCustom.java b/src/mightypork/gamecore/core/init/InitTaskCustom.java
new file mode 100644
index 0000000..105946e
--- /dev/null
+++ b/src/mightypork/gamecore/core/init/InitTaskCustom.java
@@ -0,0 +1,46 @@
+package mightypork.gamecore.core.init;
+
+
+/**
+ * Init task that can be extended to initialize additional stuff in the
+ * application.
+ *
+ * @author Ondřej Hruška (MightyPork)
+ */
+public abstract class InitTaskCustom extends InitTask {
+	
+	private final String name;
+	private final String[] deps;
+	
+	
+	public InitTaskCustom(String name)
+	{
+		this(name, null);
+	}
+	
+	
+	public InitTaskCustom(String name, String[] dependencies)
+	{
+		this.name = name;
+		this.deps = dependencies;
+	}
+	
+	
+	@Override
+	public abstract void run();
+	
+	
+	@Override
+	public String getName()
+	{
+		return name;
+	}
+	
+	
+	@Override
+	public String[] getDependencies()
+	{
+		return deps;
+	}
+
+}
diff --git a/src/mightypork/gamecore/core/init/InitTaskScreens.java b/src/mightypork/gamecore/core/init/InitTaskScreens.java
new file mode 100644
index 0000000..5d68f59
--- /dev/null
+++ b/src/mightypork/gamecore/core/init/InitTaskScreens.java
@@ -0,0 +1,42 @@
+package mightypork.gamecore.core.init;
+
+
+import mightypork.gamecore.graphics.Renderable;
+
+
+/**
+ * Task to init renderable screens (part of the main loop).<br>
+ * Resources must already be ready.
+ *
+ * @author Ondřej Hruška (MightyPork)
+ */
+public abstract class InitTaskScreens extends InitTask {
+
+	@Override
+	public void run()
+	{
+		app.setMainRenderable(getMainRenderableImpl());
+	}
+	
+	
+	/**
+	 * Create a loader impl
+	 *
+	 * @return loader
+	 */
+	protected abstract Renderable getMainRenderableImpl();
+	
+	
+	@Override
+	public String getName()
+	{
+		return "renderables";
+	}
+	
+	
+	@Override
+	public String[] getDependencies()
+	{
+		return new String[] { "resources", "main_loop" };
+	}
+}
diff --git a/src/mightypork/gamecore/core/plugins/screenshot/ScreenshotRequestListener.java b/src/mightypork/gamecore/core/plugins/screenshot/ScreenshotRequestListener.java
new file mode 100644
index 0000000..b113914
--- /dev/null
+++ b/src/mightypork/gamecore/core/plugins/screenshot/ScreenshotRequestListener.java
@@ -0,0 +1,7 @@
+package mightypork.gamecore.core.plugins.screenshot;
+
+
+public interface ScreenshotRequestListener {
+	
+	void onScreenshotRequest();
+}