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;}
-  
+    
 };