WIP: Yachts now power up upon collecting an item

Power up is speed boost x2 multiplier
Lasts 10 seconds
Do not stack

#story[1250]

src/main/java/seng302/gameServer/GameState.java

@@ -59,6 +59,8 @@ public class GameState implements Runnable {
     private static final int TIME_TILL_START = 10 * 1000;
     static Integer MAX_PLAYERS = 8;
 
+    private static final Long POWERUP_TIMEOUT_MS = 10_000L;
+
     private static final Integer STATE_UPDATES_PER_SECOND = 60;
     private static Double ROUNDING_DISTANCE = 50d; // TODO: 14/08/17 wmu16 - Look into this value further
     private static final Double MARK_COLLISION_DISTANCE = 15d;
@@ -302,6 +304,7 @@ public class GameState implements Runnable {
         }
         for (ServerYacht yacht : yachts.values()) {
             updateVelocity(yacht);
+            checkPowerUpTimeout(yacht);
             yacht.runAutoPilot();
             yacht.updateLocation(timeInterval);
             if (yacht.getBoatStatus() != BoatStatus.FINISHED) {
@@ -319,6 +322,17 @@ public class GameState implements Runnable {
         }
     }
 
+
+    private void checkPowerUpTimeout(ServerYacht yacht) {
+        if (yacht.getPowerUp() != null) {
+            if (System.currentTimeMillis() - yacht.getPowerUpStartTime() > POWERUP_TIMEOUT_MS) {
+                yacht.powerDown();
+                logger.debug("Yacht: " + yacht.getShortName() + " powered down!");
+            }
+        }
+    }
+
+
     /**
      * Check if the yacht has crossed the course limit
      *
@@ -349,7 +363,7 @@ public class GameState implements Runnable {
             Double distance = GeoUtility.getDistance(token, serverYacht.getLocation());
             if (distance < YACHT_COLLISION_DISTANCE) {
                 tokens.remove(token);
-                serverYacht.setPowerUp(token.getTokenType());
+                serverYacht.powerUp(token.getTokenType());
                 logger.debug("Yacht: " + serverYacht.getShortName() + " got powerup " + token
                     .getTokenType());
                 notifyMessageListeners(MessageFactory.getRaceXML());
@@ -410,25 +424,31 @@ public class GameState implements Runnable {
 
 
     private void updateVelocity(ServerYacht yacht) {
-        Double velocity = yacht.getCurrentVelocity();
         Double trueWindAngle = Math.abs(windDirection - yacht.getHeading());
         Double boatSpeedInKnots = PolarTable.getBoatSpeed(getWindSpeedKnots(), trueWindAngle);
         Double maxBoatSpeed = GeoUtility.knotsToMMS(boatSpeedInKnots);
+        if (yacht.getPowerUp() != null) {
+            if (yacht.getPowerUp().equals(TokenType.BOOST)) {
+                maxBoatSpeed *= 2;
+            }
+        }
+
+        Double currentVelocity = yacht.getCurrentVelocity();
         // TODO: 15/08/17 remove magic numbers from these equations.
         if (yacht.getSailIn()) {
-            if (velocity < maxBoatSpeed - 500) {
+            if (currentVelocity < maxBoatSpeed - 500) {
                 yacht.changeVelocity(maxBoatSpeed / 100);
-            } else if (velocity > maxBoatSpeed + 500) {
+            } else if (currentVelocity > maxBoatSpeed + 500) {
-                yacht.changeVelocity(-velocity / 200);
+                yacht.changeVelocity(-currentVelocity / 200);
             } else {
                 yacht.setCurrentVelocity(maxBoatSpeed);
             }
         } else {
-            if (velocity > 3000) {
+            if (currentVelocity > 3000) {
-                yacht.changeVelocity(-velocity / 200);
+                yacht.changeVelocity(-currentVelocity / 200);
-            } else if (velocity > 100) {
+            } else if (currentVelocity > 100) {
-                yacht.changeVelocity(-velocity / 50);
+                yacht.changeVelocity(-currentVelocity / 50);
-            } else if (velocity <= 100) {
+            } else if (currentVelocity <= 100) {
                 yacht.setCurrentVelocity(0d);
             }
         }

src/main/java/seng302/gameServer/MainServerThread.java

@@ -210,7 +210,7 @@ public class MainServerThread implements Runnable, ClientConnectionDelegate {
         GameState.clearTokens();
         Random random = new Random();
         Collections.shuffle(allTokens);
-        for (int i = 0; i < random.nextInt(allTokens.size() - 1); i++) {
+        for (int i = 0; i < random.nextInt(allTokens.size()); i++) {
             GameState.addToken(allTokens.get(i));
         }
     }

src/main/java/seng302/model/ServerYacht.java

@@ -53,6 +53,7 @@ public class ServerYacht {
 
     //PowerUp
     private TokenType powerUp;
+    private Long powerUpStartTime;
 
 
     public ServerYacht(String boatType, Integer sourceId, String hullID, String shortName,
@@ -104,8 +105,17 @@ public class ServerYacht {
         location = geoPoint;
     }
 
-    public void setPowerUp(TokenType powerUp) {
+    public void powerUp(TokenType powerUp) {
         this.powerUp = powerUp;
+        powerUpStartTime = System.currentTimeMillis();
+    }
+
+    public void powerDown() {
+        this.powerUp = null;
+    }
+
+    public Long getPowerUpStartTime() {
+        return powerUpStartTime;
     }
 
     public TokenType getPowerUp() {

src/main/java/seng302/model/token/Token.java

@@ -18,5 +18,4 @@ public class Token extends GeoPoint {
     public TokenType getTokenType() {
         return tokenType;
     }
-
 }