// gets the new status of all the parts of the simulator and returns them in an integer array
public GroundCell[][] updateMap() {
moveAnts(); // move all the ants
// check to see if there is enough food and space to spawn more ants
while (nest1.getFoodStored() >= Parameters.FOOD_TO_SPAWN_NEW_ANT && nest1.checkForDeadAnts()) {
nest1.createNewAnt(); // will spawn a new ant in a dead ant's place
}
this.resetBoard();
boardLayout[nest1.getX()][nest1.getY()].hasNest = true; // place the nest
for (int i = 0; i < Parameters.NUM_OF_FOOD_PILES; ++i) // draw the food piles
{
if (theFood[i].isHasFoodLeft()) // check if food pile still has food in it
{
boardLayout[theFood[i].getX()][theFood[i].getY()].hasFood = true;
}
}
for (int i = 0; i < Parameters.NUM_OF_ANTS; ++i) // draw the ants
{
if (nest1.theAnts[i].isAlive()) // check to see if ant is alive
{
if (nest1.theAnts[i].isHasFood()) // check if the ant is carrying food
{
// display ant carrying food
boardLayout[nest1.theAnts[i].getX()][nest1.theAnts[i].getY()].hasAntWithFood = true;
} else {
boardLayout[nest1.theAnts[i].getX()][nest1.theAnts[i].getY()].hasAnt =
true; // display an ant
}
}
}
return boardLayout;
}
// moves the ants and then checks where they are
public void moveAnts() {
// iterate through the ants
for (int i = 0; i < Parameters.NUM_OF_ANTS; ++i) {
// Check to see if the ant is carrying food. If it is, drop the pheromone
if (nest1.theAnts[i].isHasFood()
&& boardLayout[nest1.theAnts[i].getX()][nest1.theAnts[i].getY()].isEmpty) {
boardLayout[nest1.theAnts[i].getX()][nest1.theAnts[i].getY()].setPheromone(
Parameters.PHEROMONE_STRENGTH + 1);
}
// Check if the cell has a pheromone on it. If it does, check the cells around it
// and move in the direction of the food (weaker direction)
if (boardLayout[nest1.theAnts[i].getX()][nest1.theAnts[i].getY()].getPheromone() > 0
&& !nest1.theAnts[i].isHasFood()) {
int antX = nest1.theAnts[i].getX();
int antY = nest1.theAnts[i].getY();
int pherStrength = boardLayout[antX][antY].getPheromone();
if (boardLayout[antX][antY + 1].getPheromone() < pherStrength
&& boardLayout[antX][antY + 1].getPheromone() > 0) {
nest1.theAnts[i].move(antX, antY + 1);
} else if (boardLayout[antX + 1][antY + 1].getPheromone() < pherStrength
&& boardLayout[antX + 1][antY + 1].getPheromone() > 0) {
nest1.theAnts[i].move(antX + 1, antY + 1);
} else if (boardLayout[antX + 1][antY].getPheromone() < pherStrength
&& boardLayout[antX + 1][antY].getPheromone() > 0) {
nest1.theAnts[i].move(antX + 1, antY);
} else if (boardLayout[antX + 1][antY - 1].getPheromone() < pherStrength
&& boardLayout[antX + 1][antY - 1].getPheromone() > 0) {
nest1.theAnts[i].move(antX + 1, antY - 1);
} else if (boardLayout[antX][antY - 1].getPheromone() < pherStrength
&& boardLayout[antX][antY - 1].getPheromone() > 0) {
nest1.theAnts[i].move(antX, antY - 1);
} else if (boardLayout[antX - 1][antY - 1].getPheromone() < pherStrength
&& boardLayout[antX - 1][antY - 1].getPheromone() > 0) {
nest1.theAnts[i].move(antX - 1, antY - 1);
} else if (boardLayout[antX - 1][antY].getPheromone() < pherStrength
&& boardLayout[antX - 1][antY].getPheromone() > 0) {
nest1.theAnts[i].move(antX - 1, antY);
} else if (boardLayout[antX - 1][antY + 1].getPheromone() < pherStrength
&& boardLayout[antX - 1][antY + 1].getPheromone() > 0) {
nest1.theAnts[i].move(antX - 1, antY + 1);
} else {
// If no more surrounding cells have pheromones and the pheromone trail
// doesn't lead to a food pile, move the ants to next space
nest1.theAnts[i].move();
}
} else {
// move the ants to next space
nest1.theAnts[i].move();
}
// check if ant is at the nest
if (nest1.theAnts[i].getX() == nest1.getX() && nest1.theAnts[i].getY() == nest1.getY()) {
// check to see if the ant is carrying food
if (nest1.theAnts[i].isHasFood()) {
// drop off food at the nest
nest1.theAnts[i].setHasFood(false);
nest1.incrementFood();
}
// Check if ant is hungry and if there is food at the nest
if (nest1.theAnts[i].getRemainingLife() < Parameters.ANT_LIFESPAN / 2
&& nest1.getFoodStored() > 1) {
// restores the ants life remaining to full value
nest1.theAnts[i].feedAnt();
nest1.decrementFood();
}
}
// check to see if an ant found food
else if (boardLayout[nest1.theAnts[i].getX()][nest1.theAnts[i].getY()].hasFood) {
// only pick up food if the ant isn't already carrying food
if (!nest1.theAnts[i].isHasFood()) {
nest1.theAnts[i].setHasFood(true); // set carrying food attribute to true on the ant
int temp = getFoodPileIndex(nest1.theAnts[i]); // get index number of given food pile
theFood[temp].decrementPile(); // decrement the food remaining
}
}
}
}