/** Executes step method for each car and adds them to their new position */
private void moveCars() {
this.carsToRemove.clear();
this.positionsToCheck.clear();
// Cars compute their new position
for (Car car : travelingCars) car.move();
// Move cars in the map
for (Car car : travelingCars) {
int x = car.getX();
int y = car.getY();
// Move car
if (!this.isPositionOutOfBounds(x, y)) {
map.moveTo(car, x, y);
this.addPositionToCheck(car.getPosition().getGridPoint());
}
// Car moved out of the map. Add for removal
else {
this.addCarToRemove(car);
}
}
// Remove cars out of bounds
for (Car car : this.carsToRemove) {
remove(car);
}
// Manage collisions
for (String posId : this.positionsToCheck.keySet()) {
GridPoint pos = this.positionsToCheck.get(posId);
int x = pos.getX();
int y = pos.getY();
if (this.getNumElements(x, y) > 1) {
Collision col = new Collision(x, y, map);
Iterable<TrafficElement> elements = map.getObjectsAt(x, y);
remove(elements);
context.add(col);
map.moveTo(col, x, y);
this.collisions.add(col);
}
}
}
public void moveTowards(GridPoint pt) {
// only move if we are not already in this grid location
if (!pt.equals(grid.getLocation(this))) {
NdPoint myPoint = space.getLocation(this);
NdPoint otherPoint = new NdPoint(pt.getX(), pt.getY());
double angle = SpatialMath.calcAngleFor2DMovement(space, myPoint, otherPoint);
space.moveByVector(this, 1, angle, 0);
myPoint = space.getLocation(this);
grid.moveTo(this, (int) myPoint.getX(), (int) myPoint.getY());
moved = true;
}
}
public void infect() {
GridPoint pt = grid.getLocation(this);
List<Object> humans = new ArrayList<Object>();
for (Object obj : grid.getObjectsAt(pt.getX(), pt.getY())) {
if (obj instanceof Human) {
humans.add(obj);
}
}
if (humans.size() > 0) {
int index = RandomHelper.nextIntFromTo(0, humans.size() - 1);
Object obj = humans.get(index);
NdPoint spacePt = space.getLocation(obj);
Context<Object> context = ContextUtils.getContext(obj);
context.remove(obj);
Zombie zombie = new Zombie(space, grid);
context.add(zombie);
space.moveTo(zombie, spacePt.getX(), spacePt.getY());
grid.moveTo(zombie, pt.getX(), pt.getY());
Network<Object> net = (Network<Object>) context.getProjection("infection network");
net.addEdge(this, zombie);
}
}
/**
* Rain clouds appear with a certain chance, influenced by the weather For every rain cloud in the
* grid the velocity of every rain object is updated Rain clouds are removed if they have passed a
* certain time
*/
@ScheduledMethod(start = 1, interval = 1, priority = 0)
public void rain() {
// Let new raingroups appear with a certain chance
double chance = SimulationParameters.rainProb;
// The probability of rain appearing decreases if there is already rain in the grid
if (noRainGroups == 1) chance = (chance / (noRainGroups)) * 0.5;
if (noRainGroups == 2) chance = (chance / (noRainGroups)) * 0.1;
if (noRainGroups > 2) chance = (chance / (noRainGroups)) * 0.01;
double f = urng.nextDouble();
if (f < chance) {
// Let rain appear
int x = rand.nextInt((SimulationParameters.gridSize - 0) + 1);
int y = rand.nextInt((SimulationParameters.gridSize - 0) + 1);
int[] newLoc = {x, y};
// Let new raingroup appear in random location
RainGroup rg = new RainGroup(ContextUtils.getContext(this), grid, newLoc);
noRainGroups++;
rainGroups.add(rg);
}
ArrayList<RainGroup> toRemove = new ArrayList<RainGroup>();
for (RainGroup rg : rainGroups) {
// Get velocity vector of the rain
float x = Wind.getWindVelocity().x;
float y = Wind.getWindVelocity().y;
Vector2 velRain = new Vector2(x, y);
velRain.setLength(
Wind.getWindVelocity().len() * 0.9f); // Rain speed is a bit lower than that of the wind
List<Rain> toRemove1 = new ArrayList<Rain>();
// Let rain be carried by the wind
if (urng.nextDouble() < velRain.len()) {
for (Rain rain : rg.getRainObjects()) {
Directions dir = Directions.fromVectorToDir(velRain);
GridPoint pt = grid.getLocation(rain);
int cX = pt.getX() + dir.xDiff;
int cY = pt.getY() + dir.yDiff;
// If new rain-location is out of borders, delete this rain object
// In this way the cloud "travels" out of the grid
if (cX < 0
|| cX >= SimulationParameters.gridSize
|| cY < 0
|| cY >= SimulationParameters.gridSize) {
toRemove1.add(rain);
} else grid.moveTo(rain, cX, cY);
}
}
for (Rain r : toRemove1) {
rg.removeRain(r);
TreeBuilder.performance.decreaseRainCount();
}
}
// Remove the raingroups from our list which were removed from the context
for (RainGroup rg : toRemove) {
rainGroups.remove(rg);
noRainGroups--;
}
}
/**
* Adds a car to the simulation
*
* @param car
*/
private void add(Car car) {
travelingCars.add(car);
context.add(car);
map.moveTo(car, car.getX(), car.getY());
}