Added some skeletons

demo2/pom.xml

@@ -35,6 +35,11 @@
       <version>${junit.version}</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>nz.ac.massey.javaecs</groupId>
+      <artifactId>javaecs</artifactId>
+      <version>0.9.2-PRERELEASE</version>
+  </dependency>
   </dependencies>
   <build>
     <plugins>

demo2/src/main/java/nz/ac/massey/javaecs/examples/App.java

@@ -1,5 +1,7 @@
 package nz.ac.massey.javaecs.examples;
 
+import nz.ac.massey.javaecs.Engine;
+
 /**
  * Hello world!
  */
@@ -12,6 +14,9 @@ public final class App {
      * @param args The arguments of the program.
      */
     public static void main(String[] args) {
+        Engine gameEngine = new Engine();
+
+        
         System.out.println("Hello World!");
     }
 }

demo2/src/main/java/nz/ac/massey/javaecs/examples/Components/Control.java

@@ -0,0 +1,5 @@
+package nz.ac.massey.javaecs.examples.Components;
+
+public class Control {
+    
+}

demo2/src/main/java/nz/ac/massey/javaecs/examples/Components/Render.java

@@ -0,0 +1,11 @@
+package nz.ac.massey.javaecs.examples.Components;
+
+import java.lang.reflect.Type;
+
+public class Render {
+    public Type renderType;
+
+    public Render(Type t){
+        renderType = t;
+    }
+}

demo2/src/main/java/nz/ac/massey/javaecs/examples/Components/Sprite.java

@@ -0,0 +1,7 @@
+package nz.ac.massey.javaecs.examples.Components;
+
+import javafx.scene.image.Image;
+
+public class Sprite {
+    Image sprite;
+}

demo2/src/main/java/nz/ac/massey/javaecs/examples/Components/Vec2D.java

@@ -0,0 +1,11 @@
+package nz.ac.massey.javaecs.examples.Components;
+
+public class Vec2D {
+    public double x;
+    public double y;
+
+    public Vec2D(double x, double y){
+        this.x = x;
+        this.y = y;
+    }
+}

demo2/src/main/java/nz/ac/massey/javaecs/examples/Systems/ControlSystem.java

@@ -0,0 +1,19 @@
+package nz.ac.massey.javaecs.examples.Systems;
+
+import nz.ac.massey.javaecs.ECSSystem;
+
+public class ControlSystem extends ECSSystem {
+
+    @Override
+    public void init() {
+        // TODO Auto-generated method stub
+        
+    }
+
+    @Override
+    public void update() {
+        // TODO Auto-generated method stub
+        
+    }
+    
+}

demo2/src/main/java/nz/ac/massey/javaecs/examples/Systems/RenderSystem.java

@@ -0,0 +1,97 @@
+package nz.ac.massey.javaecs.examples.Systems;
+
+import java.util.BitSet;
+
+import javafx.application.Application;
+import javafx.application.Platform;
+import javafx.scene.Group;
+import javafx.scene.Scene;
+import javafx.scene.paint.Color;
+import javafx.stage.Stage;
+import nz.ac.massey.javaecs.ECSSystem;
+import nz.ac.massey.javaecs.Engine;
+import nz.ac.massey.javaecs.Entity;
+import nz.ac.massey.javaecs.examples.Components.Control;
+import nz.ac.massey.javaecs.examples.Components.Render;
+import nz.ac.massey.javaecs.examples.Components.Sprite;
+import nz.ac.massey.javaecs.examples.Components.Vec2D;
+
+public class RenderSystem extends ECSSystem {
+    JFXView jFXView;
+    Engine gameEngine;
+    Thread renderThread;
+    double renderScale;
+    int screenX = 1024;
+    int screenY = 1024;
+
+    public RenderSystem(Engine gameEngine, double renderScale){
+        this.gameEngine = gameEngine;
+        // Set registrations
+        registrationSet = new BitSet();
+        registrationSet.set(gameEngine.getComponentIndex(Render.class));
+        registrationSet.set(gameEngine.getComponentIndex(Vec2D.class));
+        this.renderScale = renderScale;
+    }
+
+    @Override
+    public void init() {
+        // Spawn a new asynchronous thread (won't rejoin the main program flow)
+        renderThread = new Thread(new RenderStarter());
+        renderThread.start();
+    }
+
+    @Override
+    public void update() {
+        Group renderScene = new Group();
+        for (Entity entity : entities) {
+            if (((Render)gameEngine.getComponentData(entity, Render.class)).renderType == Control.class){
+                // Do control updates here
+            }
+            else if (((Render)gameEngine.getComponentData(entity, Render.class)).renderType == Sprite.class){
+                Vec2D vec2d = (Vec2D)gameEngine.getComponentData(entity, Vec2D.class);
+                Sprite sprite = (Sprite)gameEngine.getComponentData(entity, Sprite.class);
+            }
+        }
+        
+
+        // Must be run by the UI thread, not the main thread.
+        // This dispatches the operation run() to the UI.
+        Platform.runLater(new Runnable(){
+            @Override
+            public void run() {
+                JFXView.root.getChildren().clear();
+                JFXView.root.getChildren().add(renderScene);
+            }
+        });
+    }
+
+    // Add a renderer
+    public class RenderStarter implements Runnable{
+
+        @Override
+        public void run() {
+            JFXView.run();
+        }
+        void updateScene(Group newGroup){
+            JFXView.root.getChildren().clear();
+            JFXView.root.getChildren().add(newGroup); 
+        }
+    }
+
+    public static class JFXView extends Application {
+        private static Group root;
+
+        @Override
+        public void start(Stage primaryStage) throws Exception {
+            // based on the colorful circles sample at https://docs.oracle.com/javase/8/javafx/get-started-tutorial/animation.htm 
+            root = new Group();
+            Scene scene = new Scene(root, 1024, 1024, Color.BLACK);
+            primaryStage.setScene(scene);
+            primaryStage.show();
+        }
+        
+        public static void run(){
+            launch(new String[0]);
+        }
+    }
+}