adopt MVC pattern and add real time graph interface

src/main/java/core/controller/RLController.java

@@ -0,0 +1,81 @@
+package core.controller;
+
+import core.DiscreteActionSpace;
+import core.Environment;
+import core.ListDiscreteActionSpace;
+import core.algo.Learning;
+import core.algo.Method;
+import core.algo.mc.MonteCarloOnPolicyEGreedy;
+import core.gui.View;
+
+import javax.swing.*;
+import java.util.Optional;
+
+public class RLController<A extends Enum> implements ViewListener{
+    protected Environment<A> environment;
+    protected Learning<A> learning;
+    protected DiscreteActionSpace<A> discreteActionSpace;
+    protected View<A> view;
+    private int delay;
+    private int nrOfEpisodes;
+    private Method method;
+
+    public RLController(){
+    }
+
+    public void start(){
+        if(environment == null || discreteActionSpace == null || method == null){
+            throw new RuntimeException("Set environment, discreteActionSpace and method before calling .start()");
+        }
+
+        switch (method){
+            case MC_ONPOLICY_EGREEDY:
+                learning = new MonteCarloOnPolicyEGreedy<>(environment, discreteActionSpace);
+                break;
+            case TD_ONPOLICY:
+                break;
+            default:
+                throw new RuntimeException("Undefined method");
+        }
+        SwingUtilities.invokeLater(() ->{
+            view = new View<>(learning, this);
+            learning.addListener(view);
+        });
+        learning.learn(nrOfEpisodes);
+    }
+    
+    @Override
+    public void onEpsilonChange(float epsilon) {
+        learning.setEpsilon(epsilon);
+        SwingUtilities.invokeLater(() -> view.updateLearningInfoPanel());
+    }
+
+    @Override
+    public void onDelayChange(int delay) {
+    }
+
+    public RLController<A> setMethod(Method method){
+        this.method = method;
+        return this;
+    }
+    public RLController<A> setEnvironment(Environment<A> environment){
+        this.environment = environment;
+        return this;
+    }
+    @SafeVarargs
+    public final RLController<A> setAllowedActions(A... actions){
+        this.discreteActionSpace = new ListDiscreteActionSpace<>(actions);
+        return this;
+    }
+
+    public RLController<A> setDelay(int delay){
+        this.delay = delay;
+        return this;
+    }
+
+    public RLController<A> setEpisodes(int nrOfEpisodes){
+        this.nrOfEpisodes = nrOfEpisodes;
+        return this;
+    }
+
+}

src/main/java/core/controller/ViewListener.java

@@ -0,0 +1,6 @@
+package core.controller;
+
+public interface ViewListener {
+    void onEpsilonChange(float epsilon);
+    void onDelayChange(int delay);
+}