82 lines
1.7 KiB
Plaintext
82 lines
1.7 KiB
Plaintext
|
import teilchen.Physics;
|
||
|
|
import teilchen.force.Attractor;
|
||
|
|
import teilchen.force.ViscousDrag;
|
||
|
|
|
||
|
|
final int CANVAS_WIDTH = 500;
|
||
|
|
final int CANVAS_HEIGHT = 500;
|
||
|
|
|
||
|
|
final int NBR_CREATURES = 75;
|
||
|
|
|
||
|
|
Physics physics;
|
||
|
|
Attractor attractor;
|
||
|
|
|
||
|
|
ArrayList<Creature> creatures = new ArrayList<Creature>();
|
||
|
|
|
||
|
|
void setup() {
|
||
|
|
size(CANVAS_WIDTH, CANVAS_HEIGHT);
|
||
|
|
background(23, 68, 250);
|
||
|
|
frameRate(30);
|
||
|
|
|
||
|
|
physics = new Physics();
|
||
|
|
|
||
|
|
// create a global drag
|
||
|
|
ViscousDrag drag = new ViscousDrag();
|
||
|
|
drag.coefficient = 0.75f;
|
||
|
|
physics.add(drag);
|
||
|
|
|
||
|
|
// create attaractor
|
||
|
|
attractor = new Attractor();
|
||
|
|
attractor.radius(50);
|
||
|
|
attractor.strength(200);
|
||
|
|
physics.add(attractor);
|
||
|
|
|
||
|
|
// create all creatures
|
||
|
|
Creature c;
|
||
|
|
for(int i = 0; i < NBR_CREATURES; i++) {
|
||
|
|
if(i % 3 == 0) {
|
||
|
|
c = new CircleCreature((int)random(width), (int)random(height), 20);
|
||
|
|
} else if(i % 3 == 1) {
|
||
|
|
c = new TriangleCreature((int)random(width), (int)random(height), 20);
|
||
|
|
} else {
|
||
|
|
c = new SquareCreature((int)random(width), (int)random(height), 30, 30);
|
||
|
|
}
|
||
|
|
creatures.add(c);
|
||
|
|
physics.add(c);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void draw() {
|
||
|
|
|
||
|
|
attractor.position().set(mouseX, mouseY);
|
||
|
|
|
||
|
|
physics.step(1.0 / frameRate);
|
||
|
|
|
||
|
|
background(23, 68, 250);
|
||
|
|
stroke(255);
|
||
|
|
noFill();
|
||
|
|
|
||
|
|
for(int i = 0; i < creatures.size(); i++) {
|
||
|
|
Creature c = creatures.get(i);
|
||
|
|
c.display();
|
||
|
|
}
|
||
|
|
|
||
|
|
if(attractor.strength() < 0) {
|
||
|
|
stroke(255, 0, 0);
|
||
|
|
fill(255, 0, 0, 35);
|
||
|
|
} else {
|
||
|
|
stroke(0, 255, 0);
|
||
|
|
fill(0, 255, 0, 35);
|
||
|
|
}
|
||
|
|
|
||
|
|
ellipse(attractor.position().x, attractor.position().y,
|
||
|
|
attractor.radius(), attractor.radius());
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void mousePressed() {
|
||
|
|
float inv = -1 * attractor.strength();
|
||
|
|
attractor.strength(inv);
|
||
|
|
}
|
||
|
|
|