Merge branch 'story63' into 'master'

63. [C, M] I'd like to be able to make small adjustments to the heading of my boat, as Gemma, either upwind or downwind.

Note: each keypress should change the boat's heading by a small amount (3 degrees?) Pressing the 'upwind' key will turn the boat's head towards the wind by that small amount, while the 'downwind' key will do the opposite. Continuing to press the downwind key when the boat is already heading straight downwind, or upwind when heading directly upwind, achieves nothing.

Acceptance criteria:

- The player boat turns towards wind a small amount for each press of the 'upwind' key.
- The player boat turns away from the wind by a small amount for each press of the 'downwind' key.
- If the boat heading is directly into wind after a series of 'upwind' keypresses, the heading will continue to change in the same direction for one more keypress.
- Substitute 'downwind' for 'upwind' for the downwind case.


See merge request !21

racevisionGame/src/test/java/mock/model/commandFactory/WindCommandTest.java

@@ -0,0 +1,58 @@
+package mock.model.commandFactory;
+
+import mock.model.MockBoat;
+import mock.model.MockRace;
+import network.Messages.Enums.BoatActionEnum;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import shared.model.Bearing;
+import shared.model.Boat;
+import shared.model.Race;
+import visualiser.model.VisualiserRace;
+
+import static org.mockito.Mockito.when;
+import static org.testng.Assert.*;
+import static org.mockito.Mockito.mock;
+
+/**
+ * Created by connortaylorbrown on 4/08/17.
+ */
+public class WindCommandTest {
+    private MockRace race;
+    private MockBoat boat;
+    private Command upwind;
+    private Command downwind;
+    private double initial;
+
+    private double offset = 3.0;
+
+    @Before
+    public void setUp() {
+        race = mock(MockRace.class);
+        boat = new MockBoat(0, "Bob", "NZ", null);
+
+        when(race.getWindDirection()).thenReturn(Bearing.fromDegrees(0.0));
+        boat.setBearing(Bearing.fromDegrees(45.0));
+
+        upwind = CommandFactory.createCommand(race, boat, BoatActionEnum.UPWIND);
+        downwind = CommandFactory.createCommand(race, boat, BoatActionEnum.DOWNWIND);
+
+        initial = boat.getBearing().degrees();
+    }
+
+    /**
+     * Ensure the difference between initial and final angle is 3 degrees
+     */
+    @Test
+    public void upwindCommandDecreasesAngle() {
+        upwind.execute();
+        assertEquals(initial - boat.getBearing().degrees(), -offset, 1e-5);
+    }
+
+    @Test
+    public void downwindCommandIncreasesAngle() {
+        downwind.execute();
+        assertEquals(initial - boat.getBearing().degrees(), offset, 1e-5);
+    }
+}