wip : Single particle system

s03_particles/GraphicObject.pde

@@ -0,0 +1,14 @@
+abstract class GraphicObject {
+  PVector location;
+  PVector velocity;
+  PVector acceleration;
+
+  color fillColor = color (255);
+  color strokeColor = color (255);
+  float strokeWeight = 1;
+
+  abstract void update(int deltaTime);
+
+  abstract void display();
+
+}

s03_particles/Particle.pde

@@ -0,0 +1,29 @@
+class Particle {
+  PVector position;
+  PVector velocity;
+  PVector acceleration;
+
+  Particle() {
+    position = new PVector(width/2, height/2);
+    velocity = new PVector(random(-1, 1), random(-2, 0));
+    acceleration = new PVector(0, 0.05);
+  }
+
+  Particle(PVector l) {
+    position = l.copy();
+    velocity = new PVector(random(-1, 1), random(-2, 0));
+    acceleration = new PVector(0, 0.05);
+  }
+
+  void update() {
+    velocity.add(acceleration);
+    position.add(velocity);
+    acceleration.mult(0);
+  }
+
+  void display() {
+    stroke(0);
+    fill(175);
+    ellipse(position.x, position.y, 10, 10);
+  }
+}

s03_particles/s03_particles.pde

@@ -0,0 +1,24 @@
+int currentTime;
+int previousTime;
+int deltaTime;
+
+void setup() {
+  size (800, 600);
+}
+
+void draw() {
+  currentTime = millis();
+  deltaTime = currentTime - previousTime;
+  previousTime = currentTime;
+
+  update(deltaTime);
+  display();
+}
+
+void update(int deltaTime) {
+
+}
+
+void display() {
+
+}