creature creature exmaple

micro/creature_creature_behavior/Creature.pde

@@ -4,6 +4,7 @@ import mathematik.Vector3f;
 class Creature extends BehaviorParticle {
   
   float   _scale;
+  float   _rotation;
   
   public Creature(int x, int y, int r) {
     super();
@@ -11,26 +12,62 @@ class Creature extends BehaviorParticle {
     maximumInnerForce(100);
     radius(r);
     _scale = 1.0;
+    _rotation = 0;
   }
   
+  ///////////////////////////////////
+  // display method
+  // + applies transformations
+  // + draws shape of the subclass   
+  
   public void display() {
     pushMatrix();
     translate(position().x, position().y);
-    rotate(getRotation()); 
+    if(_rotation != 0)
+      rotate(_rotation);
+    else
+      rotate(getRotation()); 
     scale(_scale);
     draw_shape();
     popMatrix();    
   }
   
+  /////////////////////////////////
+  // (absolute) transforms
+  
+  public void rotate_to(float r) {
+    _rotation = r;
+  }
+  
+  public void scale_to(float s) {
+    _scale = s;
+  }
+  
+  ///////////////////////////////////
+  // (incremental) transforms
+  
+  public void rotate_increment(float r) {
+    _rotation += r;
+  }
+    
+  public void scale_increment(float s) {
+    _scale += s;
+  }  
+  
   private float getRotation() {
     if(velocity().isNaN() || velocity().magnitude() == 0) return 0;
     Vector3f v = new Vector3f(-1, 0, 0);    
     return velocity().angle(v);
   }
   
+  ///////////////////////////////////
+  // ** METHODS FOR SUBCLASSES **  
+  
+  // draws a (subclass) shape (in own coordinates)  
   public void draw_shape() {}
   
+  // evaluates if mx and my are inside the (subclass) shape 
   public boolean inside(int mx, int my){return false;}
-  
+    
 };
 

micro/creature_creature_behavior_example/ColonyBehavior.pde

@@ -0,0 +1,59 @@
+import teilchen.Physics;
+import teilchen.util.CollisionManager;
+import teilchen.behavior.Arrival;
+
+class ColonyBehavior implements CreatureBehavior {
+  
+  ArrayList<Colon> _colons = new ArrayList<Colon>(); 
+  Arrival _leader;
+  CollisionManager _collision;
+  
+  Physics _physics;
+  
+  public ColonyBehavior(Physics p, CollisionManager c) {
+    _colons = new ArrayList<Colon>();
+    _leader = new Arrival();
+    _leader.position().set(random(width), random(height));
+    _physics = p;
+    _collision = c;
+  }
+  
+  public void add(Creature c) {
+    
+    _physics.add(c);
+    _collision.collision().add(c);
+    
+    Colon colon = new Colon(c);
+    if(_colons.size() >= 1) {
+      colon.a.setPositionRef(_colons.get(_colons.size()-1).creature.position());
+    } else if(_colons.isEmpty()) {
+      colon.a.setPositionRef(_leader.position());
+    }
+    _colons.add(colon);
+  }
+  
+  public void event(int x, int y) {
+    _leader.position().set(x, y);    
+  }
+ 
+  public void event(int c) {
+    if(c == 'q') {
+      _leader.position().set(random(width), random(height));
+    }
+  }
+  
+  public void update(float dt) {;}  
+     
+  class Colon {    
+    Creature creature;
+    Arrival a;    
+    public Colon(Creature colon) {
+      creature = colon;
+      a = new Arrival();
+      a.breakforce(creature.radius() * 5);
+      a.breakradius(creature.radius() * 5);      
+      creature.behaviors().add(a);      
+    }        
+  }
+  
+}

micro/creature_creature_behavior_example/Creature.pde

@@ -0,0 +1,73 @@
+import teilchen.BehaviorParticle;
+import mathematik.Vector3f;
+
+class Creature extends BehaviorParticle {
+  
+  float   _scale;
+  float   _rotation;
+  
+  public Creature(int x, int y, int r) {
+    super();
+    position().set(x, y);
+    maximumInnerForce(100);
+    radius(r);
+    _scale = 1.0;
+    _rotation = 0;
+  }
+  
+  ///////////////////////////////////
+  // display method
+  // + applies transformations
+  // + draws shape of the subclass   
+  
+  public void display() {
+    pushMatrix();
+    translate(position().x, position().y);
+    if(_rotation != 0)
+      rotate(_rotation);
+    else
+      rotate(getRotation()); 
+    scale(_scale);
+    draw_shape();
+    popMatrix();    
+  }
+  
+  /////////////////////////////////
+  // (absolute) transforms
+  
+  public void rotate_to(float r) {
+    _rotation = r;
+  }
+  
+  public void scale_to(float s) {
+    _scale = s;
+  }
+  
+  ///////////////////////////////////
+  // (incremental) transforms
+  
+  public void rotate_increment(float r) {
+    _rotation += r;
+  }
+    
+  public void scale_increment(float s) {
+    _scale += s;
+  }  
+  
+  private float getRotation() {
+    if(velocity().isNaN() || velocity().magnitude() == 0) return 0;
+    Vector3f v = new Vector3f(-1, 0, 0);    
+    return velocity().angle(v);
+  }
+  
+  ///////////////////////////////////
+  // ** METHODS FOR SUBCLASSES **  
+  
+  // draws a (subclass) shape (in own coordinates)  
+  public void draw_shape() {}
+  
+  // evaluates if mx and my are inside the (subclass) shape 
+  public boolean inside(int mx, int my){return false;}
+    
+};
+

micro/creature_creature_behavior_example/CreatureBehavior.pde

@@ -0,0 +1,11 @@
+interface CreatureBehavior {
+  
+  public void event(int x, int y);
+ 
+  public void event(int c);  
+  
+  public void update(float dt);
+  
+  public void add(Creature c);
+  
+}

micro/creature_creature_behavior_example/TriangleCreature.pde

@@ -0,0 +1,36 @@
+class TriangleCreature extends Creature {
+  
+  PVector A, B, C;
+  
+  public TriangleCreature(int x, int y, int r) {
+    super(x, y, r);
+    
+    A = new PVector();
+    B = new PVector();
+    C = new PVector();
+    
+    float theta = TWO_PI/3;
+    
+    A.x = cos(0 * theta) * r;
+    A.y = sin(0 * theta) * r;
+    
+    B.x = cos(1 * theta) * r;
+    B.y = sin(1 * theta) * r;
+    
+    C.x = cos(2 * theta) * r;
+    C.y = sin(2 * theta) * r;
+    
+  }  
+  
+  public void draw_shape(){
+    triangle(A.x, A.y, B.x, B.y, C.x, C.y);  
+    line(0, 0, A.x, 0);
+  }
+  
+  public boolean inside(int mx, int my) {    
+    if(dist(mx, my, position().x, position().y) < radius()) return true;
+    return false;
+  }
+
+    
+};

micro/creature_creature_behavior_example/creature_creature_behavior_example.pde

@@ -0,0 +1,65 @@
+import teilchen.Physics;
+import teilchen.util.CollisionManager;
+
+final int CANVAS_WIDTH = 500;
+final int CANVAS_HEIGHT = 500;
+
+Physics physics;
+
+CollisionManager collision;
+
+CreatureBehavior colony;
+
+ArrayList<Creature> creatures = new ArrayList<Creature>();
+
+void setup() {  
+  size(CANVAS_WIDTH, CANVAS_HEIGHT);
+  background(23, 68, 250);
+  frameRate(30);
+  
+  physics = new Physics();
+  
+  collision = new CollisionManager();
+  collision.minimumDistance(25);
+  
+  colony = new ColonyBehavior(physics, collision);  
+  
+}
+
+void draw() {
+  
+  collision.createCollisionResolvers();
+  collision.loop(1.0 / frameRate);
+
+  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();
+  }
+  
+  collision.removeCollisionResolver();
+
+}
+
+void mousePressed() {
+  
+  Creature c = new TriangleCreature(mouseX, mouseY, 10);
+  
+  creatures.add(c);
+  
+  colony.add(c);
+  
+}
+
+void keyPressed() {
+  
+  // Inform the colony of the KEY pressed
+  colony.event(key);
+  
+}
+

micro/creature_creature_behavior_example/sketch.properties

@@ -0,0 +1,2 @@
+mode.id=processing.mode.java.JavaMode
+mode=Java