2 files changed, 17 insertions, 3 deletions

diff --git a/src/main/java/fr/umlv/java/wallj/context/Context.java b/src/main/java/fr/umlv/java/wallj/context/Context.java
index bb684b8..a8796e5 100644
--- a/src/main/java/fr/umlv/java/wallj/context/Context.java
+++ b/src/main/java/fr/umlv/java/wallj/context/Context.java
@@ -2,6 +2,7 @@ package fr.umlv.java.wallj.context;
 
 import fr.umlv.java.wallj.event.Event;
 
+import java.time.Duration;
 import java.util.List;
 import java.util.Objects;
 
@@ -15,16 +16,19 @@ public final class Context {
   private final Game game;
   private final List<Event> events;
   private final GraphicsContext graphicsContext;
+  private final Duration timeDelta;
 
   /**
-   * @param game           the current game
+   * @param game            the current game
    * @param events          the list of events of the tick
    * @param graphicsContext the current graphics context
+   * @param timeDelta       elapsed time since last update
    */
-  public Context(Game game, List<Event> events, GraphicsContext graphicsContext) {
+  public Context(Game game, List<Event> events, GraphicsContext graphicsContext, Duration timeDelta) {
     this.game = Objects.requireNonNull(game);
     this.events = Objects.requireNonNull(events);
     this.graphicsContext = Objects.requireNonNull(graphicsContext);
+    this.timeDelta = Objects.requireNonNull(timeDelta);
   }
 
   /**
@@ -47,4 +51,11 @@ public final class Context {
   public GraphicsContext getGraphicsContext() {
     return graphicsContext;
   }
+
+  /**
+   * @return the elapsed time since last update
+   */
+  public Duration getTimeDelta() {
+    return timeDelta;
+  }
 }
diff --git a/src/main/java/fr/umlv/java/wallj/viewer/Viewer.java b/src/main/java/fr/umlv/java/wallj/viewer/Viewer.java
index a87f418..463a461 100644
--- a/src/main/java/fr/umlv/java/wallj/viewer/Viewer.java
+++ b/src/main/java/fr/umlv/java/wallj/viewer/Viewer.java
@@ -17,12 +17,15 @@ import java.io.IOException;
 import java.net.URISyntaxException;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.time.Duration;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Objects;
 
 /**
  * Link between application and Zen 5
+ *
+ * @author Adam NAILI
  */
 public final class Viewer {
 
@@ -54,7 +57,7 @@ public final class Viewer {
     InputHandler inputHandler = new InputHandler(applicationContext);
     ScreenManager screenManager = new ScreenManager(applicationContext, graphics2D);
     events.addAll(inputHandler.getEvents());
-    Context context = new Context(currentGame, events, screenManager.clearScreen());
+    Context context = new Context(currentGame, events, screenManager.clearScreen(), Duration.ZERO); // TODO: duration
     List<Event> newEvents = currentGame.update(context); //return new events created from update();
     events.clear();
     return newEvents;