/**
 * Strength in numbers
 *
 * <p>Elie Zananiri<br>
 * CART 253, Winter 2008</p>
 */

// ----------------------------------------------------------------------
// GLOBAL CONSTANTS
// ----------------------------------------------------------------------
int MAX_SOLDIERS = 200;

// ----------------------------------------------------------------------
// GLOBAL VARIABLES
// ----------------------------------------------------------------------
int numSoldiers = 0;
Soldier army[] = new Soldier[MAX_SOLDIERS];

// ----------------------------------------------------------------------
// BUILT-IN FUNCTIONS
// ----------------------------------------------------------------------
void setup() {
  size(400, 400);
  smooth();
  noStroke();
}

void draw() {
  background(0);
  step();

  // draw all the soldiers
  for (int i=0; i < numSoldiers; i++) {
    army[i].draw(); 
  }
}

void mousePressed() {
  addSoldier(mouseX, mouseY); 
}

void mouseDragged() {
  addSoldier(mouseX, mouseY); 
}

void keyPressed() {
  if (key == ' ') {
    // clear all
    numSoldiers = 0;
  } 
}

// ----------------------------------------------------------------------
// USER FUNCTIONS
// ----------------------------------------------------------------------
/* adds a new soldier to the display */
void addSoldier(int newX, int newY) {
  if (numSoldiers < MAX_SOLDIERS) {
    army[numSoldiers] = new Soldier(newX, newY);

    numSoldiers++;
  }
}

/* moves all the soldiers */
void step() {
  for (int i=0; i < numSoldiers; i++) {
    army[i].move();
  }
}