Merge branch 'master' of git://github.com/nchaimov/cabs

grass.txt

@@ -0,0 +1,2 @@
+Grass 15
+EatingRabbit 10

src/world/Agent.java

@@ -10,7 +10,7 @@
 
 public abstract class Agent {
 
-	transient LocalCell cell;
+	protected transient LocalCell cell;
 	int turn = 0;
 	public boolean hasMoved = false;
 

src/world/impl/EatingRabbit.java

@@ -0,0 +1,52 @@
+package world.impl;
+
+import java.util.Collection;
+import java.util.Random;
+
+import world.Agent;
+
+public class EatingRabbit extends Agent {
+
+	public static final int EAT_AMOUNT = 5;
+	public static final int METABOLISM_PER_TURN = 2;
+	public static final int REPRODUCE_ENERGY = 100;
+	public static final int DEATH_ENERGY = 10;
+
+	private Random random = new Random();
+
+	public int health = 50;
+
+	@Override
+	public void go() {
+		System.out.println("Rabbit at " + cell.x + ", " + cell.y + " has energy " + health);
+
+		if (health <= DEATH_ENERGY) {
+			System.out.println("Rabbit at " + cell.x + ", " + cell.y + " is dying");
+			this.die();
+			return;
+		}
+		Collection<? extends Agent> agents = look(0, 0);
+		for (Agent a : agents) {
+			if (a instanceof Grass) {
+				Grass g = (Grass) a;
+				System.out.println("Rabbit at " + cell.x + ", " + cell.y + " sees grass of height "
+						+ g.height);
+				if (g.height > Grass.MIN_EAT_HEIGHT) {
+					System.out.println("Rabbit at " + cell.x + ", " + cell.y + " eats grass");
+					health += EAT_AMOUNT;
+				}
+			}
+		}
+		if (health >= REPRODUCE_ENERGY) {
+			this.cell.add(new EatingRabbit());
+			System.out.println("Rabbit at " + cell.x + ", " + cell.y + " reproduced");
+		}
+
+		int x = random.nextInt(2);
+		int y = random.nextInt(2);
+
+		System.out.println("Rabbit at " + cell.x + ", " + cell.y + " moving by " + x + ", " + y);
+
+		move(x, y);
+	}
+}

src/world/impl/Grass.java

@@ -0,0 +1,31 @@
+package world.impl;
+
+import java.util.Collection;
+
+import world.Agent;
+
+public class Grass extends Agent {
+
+	public static final int GROW_AMOUNT = 1;
+	public static final int MIN_EAT_HEIGHT = 20;
+
+	public int height = 50;
+
+	@Override
+	public void go() {
+		height += GROW_AMOUNT;
+		System.out.println("Grass at " + cell.x + ", " + cell.y + " grew to " + height);
+
+		if (height >= MIN_EAT_HEIGHT) {
+			Collection<? extends Agent> agents = look(0, 0);
+			for (Agent a : agents) {
+				if (a instanceof EatingRabbit) {
+					height -= EatingRabbit.EAT_AMOUNT;
+					System.out.println("Grass at " + cell.x + ", " + cell.y
+							+ " eaten by rabbit; height is now " + height);
+				}
+			}
+		}
+	}
+
+}

src/world/impl/Rabbit.java

@@ -1,7 +1,5 @@
 package world.impl;
 
-import java.util.Collection;
-
 import world.Agent;
 
 public class Rabbit extends Agent {
@@ -12,7 +10,6 @@ public void go() {
 
 		// move(r.nextInt(5),r.nextInt(5));
 		move(1, 0);
-		Collection<? extends Agent> agents = look(0, 1);
-		System.out.println(">>>>>>> I can see " + agents.size() + " agents below me");
+
 	}
 }