Only one angular command can be active at a time. Only one velocity command can be active at a time. #story[1196]

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

@@ -0,0 +1,27 @@
+package mock.model.commandFactory;
+
+import java.util.Observable;
+
+/**
+ * Used to track the current active observer command. This is to ensure two commands that do similar things do not overlap.
+ */
+public class ActiveObserverCommand {
+    private ObserverCommand currentVelocityCommand;
+    private ObserverCommand currentAngularCommand;
+
+    public ActiveObserverCommand() {
+
+    }
+
+    public void changeVelocityCommand(Observable o, ObserverCommand c) {
+        o.deleteObserver(currentVelocityCommand);
+        o.addObserver(c);
+        currentVelocityCommand = c;
+    }
+
+    public void changeAngularCommand(Observable o, ObserverCommand c) {
+        o.deleteObserver(currentAngularCommand);
+        o.addObserver(c);
+        currentAngularCommand = c;
+    }
+}

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

@@ -16,6 +16,5 @@ public abstract class ObserverCommand implements Command, Observer {
         this.race = race;
         this.boat = boat;
         boat.setAutoVMG(false);
-        race.addObserver(this);
     }
 }

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

@@ -13,6 +13,7 @@ public class SailsCommand extends ObserverCommand {
 
     public SailsCommand(MockRace race, MockBoat boat, boolean sailsOut) {
         super(race, boat);
+        race.addVelocityCommand(this);
         this.sailsOut = sailsOut;
     }
 

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

@@ -22,6 +22,7 @@ public class TackGybeCommand extends ObserverCommand {
      */
     public TackGybeCommand(MockRace race, MockBoat boat) {
         super(race, boat);
+        race.addAngularCommand(this);
     }
 
     @Override

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

@@ -24,6 +24,7 @@ public class VMGCommand extends ObserverCommand {
      */
     public VMGCommand(MockRace race, MockBoat boat) {
         super(race, boat);
+        race.addAngularCommand(this);
     }
 
     @Override

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

@@ -20,6 +20,7 @@ public class WindCommand extends ObserverCommand {
      */
     public WindCommand(MockRace race, MockBoat boat, boolean upwind) {
         super(race, boat);
+        race.addAngularCommand(this);
         this.direction = upwind? -1 : 1;
     }
 
@@ -42,6 +43,6 @@ public class WindCommand extends ObserverCommand {
 
     @Override
     public void update(Observable o, Object arg) {
-
+        race.deleteObserver(this);
     }
 }