Create simple HUD with debug data

src/main/java/com/bartlomiejpluta/demo/gui/HUD.java

@@ -0,0 +1,46 @@
+package com.bartlomiejpluta.demo.gui;
+
+import com.bartlomiejpluta.base.api.gui.*;
+import com.bartlomiejpluta.base.lib.gui.*;
+
+import com.bartlomiejpluta.base.api.screen.*;
+import com.bartlomiejpluta.base.api.context.Context;
+import com.bartlomiejpluta.base.api.input.*;
+
+import com.bartlomiejpluta.demo.runner.DemoRunner;
+import com.bartlomiejpluta.demo.entity.*;
+
+public class HUD extends BorderLayout {
+	private final DemoRunner runner;
+	private final Player player;
+	private final Runtime runtime;
+
+	@Ref("debug")
+	private Label debugLbl;
+
+	public HUD(Context context, GUI gui) {
+		super(context, gui);
+		this.runner = (DemoRunner) context.getGameRunner();
+		this.player = runner.getPlayer();
+		this.runtime = Runtime.getRuntime();
+	}
+
+	@Override
+	public void draw(Screen screen, GUI gui) {
+		var coords = player.getCoordinates();
+		var pos = player.getPosition();
+		debugLbl.setText(String.format(
+			"FPS: %.2f\n" +
+			"Mem: %.2f / %.2f [MB]\n" +
+			"Coords: %d : %d\n" +
+			"Pos: %.2f : %.2f",
+			runner.instantFPS(),
+			runtime.totalMemory() / 1024f / 1024f,
+			runtime.maxMemory() / 1024f / 1024f,
+			coords.x(), coords.y(),
+			pos.x(), pos.y())
+		);
+
+		super.draw(screen, gui);
+	}
+}