Add items;

+ Minor changes

.idea/runConfigurations.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>

src/main/java/com/yes/yes/behaviours/PlaceBehaviour.java

@@ -1,12 +1,14 @@
 package com.yes.yes.behaviours;
 
-import com.yes.yes.utils.BlockContainer;
-import com.yes.yes.utils.Component;
-import com.yes.yes.utils.Coordinate;
-import com.yes.yes.utils.Entity;
+import com.yes.yes.entities.parts.Square;
+import com.yes.yes.utils.*;
 
 public class PlaceBehaviour extends Component {
 
+    /**
+     * @param entity
+     * @param blockContainer
+     */
     public PlaceBehaviour(Entity entity, BlockContainer blockContainer) {
         super(entity, blockContainer);
     }
@@ -26,6 +28,13 @@ public class PlaceBehaviour extends Component {
                 }
             }
         }
+        Item item = new Item();
+        for (int i = 0; i < 4; i++) {
+            for (int i1 = 0; i1 < 4; i1++) {
+                item.setPart(i, i1, new Square());
+            }
+        }
+        parent.getChildren().add(item);
     }
 
     @Override

src/main/java/com/yes/yes/entities/machines/TestMachine2.java

@@ -9,7 +9,7 @@ import javafx.scene.shape.Rectangle;
 public class TestMachine2 extends Entity {
     public TestMachine2() {
         super();
-        this.getChildren().add(new Rectangle(25, 25));
+        this.getChildren().add(new Rectangle(50, 50));
     }
 
     public TestMachine2(BlockContainer blockContainer) {

src/main/java/com/yes/yes/entities/parts/Square.java

@@ -0,0 +1,14 @@
+package com.yes.yes.entities.parts;
+
+import javafx.scene.paint.Color;
+import javafx.scene.shape.Rectangle;
+
+public class Square extends com.yes.yes.utils.Part {
+    public Square() {
+        var rect = new Rectangle(25,25);
+        rect.setFill(Color.RED);
+        rect.setStroke(Color.BLACK);
+        rect.setStrokeWidth(1);
+        this.getChildren().add(rect);
+    }
+}

src/main/java/com/yes/yes/utils/Item.java

@@ -0,0 +1,49 @@
+package com.yes.yes.utils;
+
+public class Item extends javafx.scene.Group {
+    final Part[][] parts = new Part[4][4];
+
+    public void setPart(int layer, int section, Part part) throws IllegalArgumentException {
+        if (layer < 0 || layer > 4 && section < 0 || section > 4) {
+            throw new IllegalArgumentException("Argument out of range");
+        }
+
+        if(parts[layer][section] != null) {
+            this.getChildren().remove(parts[layer][section]);
+        }
+
+
+
+        parts[layer][section] = part;
+        this.getChildren().add(part);
+    }
+
+    public Part getPart(int layer, int section) throws IllegalArgumentException {
+        if (layer < 0 || layer > 4 && section < 0 || section > 4) {
+            throw new IllegalArgumentException("Argument out of range");
+        }
+        return parts[layer][section];
+    }
+
+    public void rotate(int quarters) {
+        quarters %= 4;
+
+        for (int i = 0; i < quarters; i++) {
+            for (int l = 0; l < 4; l++) {
+                Part[] rot = new Part[4];
+
+                rot[0] = parts[l][2];
+                rot[1] = parts[l][0];
+                rot[2] = parts[l][3];
+                rot[3] = parts[l][1];
+
+                parts[l] = rot;
+            }
+        }
+        for (int i = 0; i < 4; i++) {
+            for (int j = 0; j < 4; j++) {
+                parts[i][j].rotate(quarters);
+            }
+        }
+    }
+}

src/main/java/com/yes/yes/utils/Part.java

@@ -0,0 +1,19 @@
+package com.yes.yes.utils;
+
+import javafx.scene.Node;
+
+public abstract class Part extends javafx.scene.Group {
+    public void addChild(Node element) {
+        this.getChildren().add(element);
+    }
+
+    public void removeChild(Node element) {
+        this.getChildren().remove(element);
+    }
+
+    public void rotate(int quarters) {
+
+        this.getTransforms().clear();
+        this.getTransforms().add(new javafx.scene.transform.Rotate(quarters % 4 * 90, 1, 1));
+    }
+}