Добавил вторую главу занимательного программирования

Занимательное программирование/2/3_multi_layer/core/build.gradle

@@ -0,0 +1,5 @@
+[compileJava, compileTestJava]*.options*.encoding = 'UTF-8'
+
+sourceSets.main.java.srcDirs = [ "src/" ]
+
+eclipse.project.name = appName + "-core"

Занимательное программирование/2/3_multi_layer/core/src/net/caraus/multilayer/MultiLayer.java

@@ -0,0 +1,61 @@
+package net.caraus.multilayer;
+
+import com.badlogic.gdx.ApplicationAdapter;
+import com.badlogic.gdx.graphics.Texture;
+import com.badlogic.gdx.graphics.g2d.SpriteBatch;
+import com.badlogic.gdx.utils.ScreenUtils;
+
+public class MultiLayer extends ApplicationAdapter {
+	SpriteBatch batch;
+
+	Texture clouds;
+    Texture ground;
+    Texture tree;
+
+    float cloudsPosition = 512.0f;
+    float groundPosition = 0.0f;
+    float treePosition = 0.0f;
+
+    boolean reverseDirection = false;
+	
+	@Override
+	public void create () {
+		batch = new SpriteBatch();
+
+		clouds = new Texture("clouds.jpg");
+        ground = new Texture("ground.jpg");
+        tree = new Texture("tree.png");
+	}
+
+	@Override
+	public void render () {
+		ScreenUtils.clear(0, 0, 0, 1);
+		batch.begin();
+		batch.draw(ground, 0, groundPosition);
+		batch.draw(clouds, 0, cloudsPosition);
+		batch.draw(tree, 0, treePosition);
+		batch.end();
+
+        if (reverseDirection) {
+            groundPosition += 3.0f;
+            cloudsPosition += 1.0f;
+            treePosition += 4.0f;
+        } else {
+            groundPosition -= 3.0f;
+            cloudsPosition -= 1.0f;
+            treePosition -= 4.0f;
+        }
+        if (cloudsPosition < 360 || cloudsPosition > 512) {
+            reverseDirection = !reverseDirection;
+        }
+	}
+	
+	@Override
+	public void dispose () {
+		batch.dispose();
+
+        ground.dispose();
+        tree.dispose();
+		clouds.dispose();
+	}
+}