Created
April 5, 2016 18:36
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///////////// Main Tab: | |
Mover m; | |
Attractor a; | |
void setup() { | |
size(400, 400); | |
background(0); | |
m = new Mover(100, 100); | |
a = new Attractor(200, 200); | |
} | |
void draw() { | |
background(0); | |
PVector force = a.attract(m); | |
m.applyForce(force); | |
m.update(); | |
m.display(); | |
a.applyForce(force); | |
m.checkEdges(); | |
a.display(); | |
a.update(); | |
} | |
////////// Attractor tab: | |
class Attractor { | |
float mass; | |
PVector location; | |
PVector velocity; | |
PVector acceleration; | |
float G; | |
Attractor(float xLoc, float yLoc) { | |
location = new PVector (xLoc, yLoc); | |
//all of your variables need values! just like location, initialize acceleration and velocity | |
// two lines below added by Mr. Chase | |
acceleration = new PVector(0,0); | |
velocity = new PVector(0,0); | |
mass = random(1, 20); | |
G = 0.4; | |
} | |
void applyForce(PVector force) { | |
PVector f = PVector.div(force, mass); | |
acceleration.add(f); | |
} | |
void update() { | |
velocity.add(acceleration); | |
location.add(velocity); | |
acceleration.mult(0); | |
} | |
PVector attract(Mover m) { | |
PVector force = PVector.sub(location, m.location); | |
float distance = force.mag(); | |
distance = constrain(distance, 5.0, 25.0); | |
force.normalize(); | |
float strength = (G * mass * m.mass) / (distance * distance); | |
force.mult(strength); | |
return force; | |
} | |
//Display function added by Mr. Chase | |
void display(){ | |
ellipse(location.x, location.y, 10,10); | |
} | |
void checkEdges(){ | |
if(location.x > width){ | |
velocity.x *= -1; | |
} else if(location.x < 0){ | |
velocity.x *= -1; | |
} | |
if(location.y > height){ | |
velocity.y *= -1; | |
} else if(location.y < 0){ | |
velocity.y *= -1; | |
} | |
} | |
} | |
///////// Mover tab: | |
class Mover { | |
PVector location; | |
PVector velocity; | |
PVector acceleration; | |
float mass; | |
ArrayList<PVector> history; | |
Mover(float xLoc, float yLoc) { | |
location = new PVector(xLoc, yLoc); | |
velocity = new PVector(0, 0); | |
acceleration = new PVector(0, 0); | |
mass = random(1, 6); | |
history = new ArrayList<PVector>(); | |
} | |
void applyForce(PVector force) { | |
PVector f = PVector.div(force, mass); | |
acceleration.add(f); | |
} | |
void display() { | |
stroke(0); | |
fill(150); | |
ellipse(location.x, location.y, 20*mass, 20*mass); | |
for (int i = 0; i< history.size(); i++) { | |
PVector current = history.get(i); | |
fill(255, 100, 100, i * 20); | |
ellipse(current.x, current.y, 20*mass, 20*mass); | |
} | |
} | |
void update() { | |
velocity.add(acceleration); | |
location.add(velocity); | |
acceleration.mult(0); | |
PVector v = new PVector(location.x, location.y); | |
history.add(v); | |
if (history.size() > 20) { | |
history.remove(0); | |
} | |
} | |
void checkEdges(){ | |
if(location.x > width){ | |
velocity.x *= -1; | |
} else if(location.x < 0){ | |
velocity.x *= -1; | |
} | |
if(location.y > height){ | |
velocity.y *= -1; | |
} else if(location.y < 0){ | |
velocity.y *= -1; | |
} | |
} | |
} |
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