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Adjusted the velocity calculations to allow for Acceleration/Deceleration of the boats, rather than just coming to a complete halt when the sails are pulled in.

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#story[986]
This commit is contained in:
Alistair McIntyre
2017-07-26 14:01:51 +12:00
parent d99055901f
commit 2bfa6cb038
1 changed files with 21 additions and 12 deletions
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src/main/java/seng302/models/Yacht.java
+21 -12
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@@ -4,8 +4,6 @@ import static seng302.utilities.GeoUtility.getGeoCoordinate;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import javafx.scene.paint.Color;
import seng302.client.ClientPacketParser;
import seng302.controllers.RaceViewController;
@@ -119,17 +117,28 @@ public class Yacht {
* @param timeInterval since last update in milliseconds
*/
public void update(Long timeInterval) {
if (sailIn) {
Double secondsElapsed = timeInterval / 1000000.0;
Double windSpeedKnots = GameState.getWindSpeedKnots();
Double trueWindAngle = Math.abs(GameState.getWindDirection() - heading);
Double boatSpeedInKnots = PolarTable.getBoatSpeed(windSpeedKnots, trueWindAngle);
velocity = boatSpeedInKnots / ClientPacketParser.MS_TO_KNOTS * 1000;
Double metersCovered = velocity * secondsElapsed;
location = getGeoCoordinate(location, heading, metersCovered);
} else {
velocity = 0d;
Double secondsElapsed = timeInterval / 1000000.0;
Double windSpeedKnots = GameState.getWindSpeedKnots();
Double trueWindAngle = Math.abs(GameState.getWindDirection() - heading);
Double boatSpeedInKnots = PolarTable.getBoatSpeed(windSpeedKnots, trueWindAngle);
Double maxBoatSpeed = boatSpeedInKnots / ClientPacketParser.MS_TO_KNOTS * 1000;
if (sailIn && velocity <= maxBoatSpeed) { // Acceleration
if (velocity < maxBoatSpeed) {
velocity += maxBoatSpeed / 25;
if (velocity > maxBoatSpeed) {
velocity = maxBoatSpeed;
}
}
} else { // Deceleration
if (velocity > 0) {
velocity = velocity -= maxBoatSpeed / 25;
if (velocity < 0) {
velocity = 0d;
}
}
}
Double metersCovered = velocity * secondsElapsed;
location = getGeoCoordinate(location, heading, metersCovered);
}