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Merged wind generator into this branch. #story[1094]

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Joseph Gardner 8 years ago
parent 577a1d1b5a
commit b258e94a54
1 changed files with 5 additions and 115 deletions
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120
racevisionGame/src/main/java/mock/model/MockRace.java
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@ -52,7 +52,6 @@ public class MockRace extends Race {
*/
private WindGenerator windGenerator;
/**
* Constructs a race object with a given RaceDataSource, BoatDataSource, and RegattaDataSource and sends events to the given mockOutput.
* @param boatDataSource Data source for boat related data (yachts and marker boats).
@ -72,7 +71,6 @@ public class MockRace extends Race {
this.shrinkBoundary = GPSCoordinate.getShrinkBoundary(this.boundary);
//Set up wind generator. It may be tidier to create this outside the race (with the values sourced from a data file maybe?) and pass it in.
this.windGenerator = new WindGenerator(
Bearing.fromDegrees(225),
@ -120,7 +118,6 @@ public class MockRace extends Race {
*/
public void run() {
initialiseBoats();
initialiseWindDirection();
this.countdownTimer.start();
}
@ -545,23 +542,13 @@ public class MockRace extends Race {
/**
* Calculates a boat's VMG.
* @param boat The boat to calculate VMG for.
* @param bearingBounds An array containing the lower and upper acceptable bearing bounds to keep the boat in the course.
* @return VMG for the specified boat.
*/
private VMG calculateVMG(MockBoat boat, Bearing[] bearingBounds) {
//Get the lower and upper acceptable bounds.
Bearing lowerAcceptableBound = bearingBounds[0];
Bearing upperAcceptableBound = bearingBounds[1];
private VMG calculateVMG(MockBoat boat) {
//Find the VMG inside these bounds.
VMG bestVMG = boat.getPolars().calculateVMG(
this.getWindDirection(),
this.getWindSpeed(),
boat.calculateBearingToNextMarker(),
lowerAcceptableBound,
upperAcceptableBound);
VMG bestVMG = boat.getPolars().calculateVMG(this.getWindDirection(), this.getWindSpeed(), boat.calculateBearingToNextMarker(), Bearing.fromDegrees(0d), Bearing.fromDegrees(359.99999d));
return bestVMG;
@ -638,29 +625,16 @@ public class MockRace extends Race {
//Move the boat forwards that many meters, and advances its time counters by enough milliseconds.
boat.moveForwards(distanceTravelledMeters, updatePeriodMilliseconds * this.scaleFactor);
//Only get a new VMG if the boat will go outside the course, or X seconds have elapsed.
boolean willStayInsideCourse = this.checkBearingInsideCourse(boat.getBearing(), boat.getCurrentPosition());
long tackPeriod = 15000;
if (!willStayInsideCourse || (boat.getTimeSinceTackChange() > tackPeriod)) {
//Calculate the boat's bearing bounds, to ensure that it doesn't go out of the course.
Bearing[] bearingBounds = this.calculateBearingBounds(boat);
if (boat.getTimeSinceTackChange() > tackPeriod) {
//Calculate the new VMG.
VMG newVMG = this.calculateVMG(boat, bearingBounds);
VMG newVMG = this.calculateVMG(boat);
//If the new vmg improves velocity, use it.
if (improvesVelocity(boat, newVMG)) {
boat.setVMG(newVMG);
} else {
//We also need to use the new VMG if our current bearing will take us out of the course.
if (!willStayInsideCourse) {
boat.setVMG(newVMG);
}
}
}
@ -674,88 +648,6 @@ public class MockRace extends Race {
}
/**
* Calculates the upper and lower bounds that the boat may have in order to not go outside of the course.
* @param boat The boat to check.
* @return An array of bearings. The first is the lower bound, the second is the upper bound.
*/
private Bearing[] calculateBearingBounds(MockBoat boat) {
Bearing[] bearings = new Bearing[2];
Bearing lowerBearing = Bearing.fromDegrees(0.001);
Bearing upperBearing = Bearing.fromDegrees(359.999);
double lastAngle = -1;
boolean lastAngleWasGood = false;
//Check all bearings between [0, 360).
for (double angle = 0; angle < 360; angle += 1) {
//Create bearing from angle.
Bearing bearing = Bearing.fromDegrees(angle);
//Check that if it is acceptable.
boolean bearingIsGood = this.checkBearingInsideCourse(bearing, boat.getCurrentPosition());
if (lastAngle != -1) {
if (lastAngleWasGood && !bearingIsGood) {
//We have flipped over from good bearings to bad bearings. So the last good bearing is the upper bearing.
upperBearing = Bearing.fromDegrees(lastAngle);
}
if (!lastAngleWasGood && bearingIsGood) {
//We have flipped over from bad bearings to good bearings. So the current bearing is the lower bearing.
lowerBearing = Bearing.fromDegrees(angle);
}
}
lastAngle = angle;
lastAngleWasGood = bearingIsGood;
}
//TODO BUG if it can't find either upper or lower, it returns (0, 359.999). Should return (boatbearing, boatbearing+0.0001)
bearings[0] = lowerBearing;
bearings[1] = upperBearing;
return bearings;
}
/**
* Checks if a given bearing, starting at a given position, would put a boat out of the course boundaries.
* @param bearing The bearing to check.
* @param position The position to start from.
* @return True if the bearing would keep the boat in the course, false if it would take it out of the course.
*/
private boolean checkBearingInsideCourse(Bearing bearing, GPSCoordinate position) {
//Get azimuth from bearing.
Azimuth azimuth = Azimuth.fromBearing(bearing);
//Tests to see if a point in front of the boat is out of bounds.
double epsilonMeters = 50d;
GPSCoordinate testCoord = GPSCoordinate.calculateNewPosition(position, epsilonMeters, azimuth);
//If it isn't inside the boundary, calculate new bearing.
if (GPSCoordinate.isInsideBoundary(testCoord, this.shrinkBoundary)) {
return true;
} else {
return false;
}
}
/**
* Checks if a boat has finished any legs, or has pulled out of race (DNF).
@ -831,7 +723,6 @@ public class MockRace extends Race {
return boats;
}
/**
* Initialises the wind bearing with the value of the windBaselineBearing.
*/
@ -840,7 +731,6 @@ public class MockRace extends Race {
this.setWind(windGenerator.generateBaselineWind());
}
/**
* Changes the wind direction randomly, while keeping it within [windLowerBound, windUpperBound].
*/
@ -872,4 +762,4 @@ public class MockRace extends Race {
}
}
}
}
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