Added WindCommand and multiple command execution to RaceLogic

- Dispatch commands with CompositeCommand
- Single WindCommand handles upwind and downwind logic
- Changed key bindings as Mac lacks PgUp PgDn
- ControllerServer is observable, RaceLogic updates CompositeCommand as observer

racevisionGame/src/main/java/mock/model/RaceLogic.java

@@ -1,12 +1,20 @@
 package mock.model;
 
 import javafx.animation.AnimationTimer;
+import mock.model.commandFactory.Command;
+import mock.model.commandFactory.CommandFactory;
+import mock.model.commandFactory.CompositeCommand;
+import network.Messages.Enums.BoatActionEnum;
 import network.Messages.Enums.BoatStatusEnum;
 import network.Messages.Enums.RaceStatusEnum;
 import network.Messages.LatestMessages;
-import shared.model.Race;
+import visualiser.gameController.ControllerServer;
 
-public class RaceLogic implements Runnable {
+import java.util.Observable;
+import java.util.Observer;
+import java.util.Stack;
+
+public class RaceLogic implements Observer, Runnable {
     /**
      * State of current race modified by this object
      */
@@ -16,6 +24,8 @@ public class RaceLogic implements Runnable {
      */
     private RaceServer server;
 
+    private CompositeCommand commands;
+
     /**
      * Initialises race loop with state and server message queue
      * @param race state of race to modify
@@ -24,6 +34,7 @@ public class RaceLogic implements Runnable {
     public RaceLogic(MockRace race, LatestMessages messages) {
         this.race = race;
         this.server = new RaceServer(race, messages);
+        this.commands = new CompositeCommand();
     }
 
     /**
@@ -123,7 +134,7 @@ public class RaceLogic implements Runnable {
 
                     //If it is still racing, update its position.
                     if (boat.getStatus() == BoatStatusEnum.RACING) {
-
+                        commands.execute();
                         race.updatePosition(boat, framePeriod, race.getRaceClock().getDurationMilli());
 
                     }
@@ -173,4 +184,13 @@ public class RaceLogic implements Runnable {
             iters++;
         }
     };
+
+    @Override
+    public void update(Observable o, Object arg) {
+        ControllerServer server = (ControllerServer)o;
+        BoatActionEnum action = server.getAction();
+        MockBoat boat = race.getBoats().get(0);
+
+        commands.addCommand(CommandFactory.createCommand(race, boat, action));
+    }
 }

racevisionGame/src/main/java/mock/model/commandFactory/CommandFactory.java

@@ -19,6 +19,8 @@ public class CommandFactory {
         switch(action) {
             case AUTO_PILOT: return new VMGCommand(race, boat);
             case TACK_GYBE: return new TackGybeCommand(race, boat);
+            case UPWIND: return new WindCommand(race, boat, true);
+            case DOWNWIND: return new WindCommand(race, boat, false);
             default: return null; // TODO - please please have discussion over what to default to
         }
     }

racevisionGame/src/main/java/mock/model/commandFactory/CompositeCommand.java

@@ -0,0 +1,23 @@
+package mock.model.commandFactory;
+
+import java.util.Stack;
+
+/**
+ * Wraps multiple commands into a composite to execute queued commands during a frame.
+ */
+public class CompositeCommand implements Command {
+    private Stack<Command> commands;
+
+    public CompositeCommand() {
+        this.commands = new Stack<>();
+    }
+
+    public void addCommand(Command command) {
+        commands.push(command);
+    }
+
+    @Override
+    public void execute() {
+        while(!commands.isEmpty()) commands.pop().execute();
+    }
+}

racevisionGame/src/main/java/mock/model/commandFactory/WindCommand.java

@@ -0,0 +1,30 @@
+package mock.model.commandFactory;
+
+import mock.model.MockBoat;
+import mock.model.MockRace;
+import shared.model.Bearing;
+
+/**
+ * Created by connortaylorbrown on 4/08/17.
+ */
+public class WindCommand implements Command {
+    private MockRace race;
+    private MockBoat boat;
+    private int direction;
+
+    public WindCommand(MockRace race, MockBoat boat, boolean upwind) {
+        this.race = race;
+        this.boat = boat;
+        this.direction = upwind? 1 : -1;
+    }
+
+    @Override
+    public void execute() {
+        double wind = race.getWindDirection().degrees();
+        double heading = boat.getBearing().degrees();
+
+        double offset = 3;
+        if(wind - heading < 0) offset *= -1 * direction;
+        boat.setBearing(Bearing.fromDegrees(heading + offset));
+    }
+}