Initial commit. This is essentially the code Yushuo, expect I moved t…

…he Path and Vehicle classes into their own files.

path.pde

@@ -0,0 +1,43 @@
+class Path {
+
+  // A Path is an arraylist of points (PVector objects)
+  ArrayList<PVector> points;
+  // A path has a radius, i.e how far is it ok for the boid to wander off
+  float radius;
+
+  Path() {
+    // Arbitrary radius of 20
+    radius = 30;
+    points = new ArrayList<PVector>();
+  }
+
+  // Add a point to the path
+  void addPoint(float x, float y) {
+    PVector point = new PVector(x, y);
+    points.add(point);
+  }
+
+  // Draw the path
+  void display() {
+    strokeJoin(ROUND);
+
+    // Draw thick line for radius
+    stroke(175);
+    strokeWeight(radius*2);
+    noFill();
+    beginShape();
+    for (PVector v : points) {
+      vertex(v.x, v.y);
+    }
+    endShape(CLOSE);
+    // Draw thin line for center of path
+    stroke(0);
+    strokeWeight(1);
+    noFill();
+    beginShape();
+    for (PVector v : points) {
+      vertex(v.x, v.y);
+    }
+    endShape(CLOSE);
+  }
+}

simulation.pde

@@ -0,0 +1,80 @@
+
+boolean debug = true;
+
+// A path object (series of connected points)
+Path path;
+
+// Two vehicles
+Vehicle car1;
+Vehicle car2;
+
+void setup()
+{
+  size(1000, 1000);
+  // Call a function to generate new Path object
+  newPath();
+
+  // Each vehicle has different maxspeed and maxforce for demo purposes
+  car1 = new Vehicle(new PVector(0, height/2), 1, 0.04);
+  car2 = new Vehicle(new PVector(0, height/2), 1, 2);
+}
+
+void draw()
+{
+  background(255);
+  // Display the path
+  path.display();
+  // The boids follow the path
+  car1.follow(path);
+  car2.follow(path);
+  // Call the generic run method (update, borders, display, etc.)
+  car1.run();
+  car2.run();
+
+  //car1.borders(path);
+  //car2.borders(path);
+  //car1.borders();
+  //car2.borders();
+  // Instructions
+  fill(0);
+
+}
+
+// Here define the element of the track
+/*void newPath()
+{
+  // A path is a series of connected points
+  // A more sophisticated path might be a curve, if you want to have a try.
+  path = new Path();
+  path.addPoint(100, height/2);
+  path.addPoint(100,height/2+200);
+  path.addPoint(300,height/2+200);
+  path.addPoint(300,height/2);
+ // path.addPoint(200, height/2+5);
+}*/
+
+
+void newPath() {
+  // A path is a series of connected points
+  // A more sophisticated path might be a curve
+  path = new Path();
+  float offset = 30;
+   path.addPoint(offset,offset);
+  path.addPoint(width-offset,offset);
+  path.addPoint(width-offset,height-offset);
+  path.addPoint(width/2,height-offset*3);
+  path.addPoint(offset,height-offset);
+}
+
+
+public void keyPressed()
+{
+  if (key == ' ') {
+    debug = !debug;
+  }
+}
+
+public void mousePressed()
+{
+  newPath();
+}