// Miya Natsuhara
// 08-17-2019
// CSE142
// TA: Grace Hopper

// Chameleon behavior: 
//    constructor: Chameleon()
//    getColor: alternate between Color.GREEN and Color.MAGENTA depending on move
//                (starting with Color.GREEN)
//    getMove: if getFront is same as me, turn left, 
//             otherwise if getFront is different from me, infect
//             otherwise hop 
//    toString: @

import java.awt.*;

public class Chameleon extends Critter {
   // tracking whether the Chameleon should appear green or not when asked next
   private boolean shouldBeGreen; 
   
   // Constructs a new chameleon, set up to be green initially
   public Chameleon() {
      shouldBeGreen = true;
   }
   
   // Returns the Chameleon's display, always a @ character. 
   public String toString() {
      return "@";
   }

   // Returns the Chameleon's next move, given information in the provided CritterInfo parameter. 
   // The Chameleon turns left if there is another Chameleon in front of it, infects if there is 
   // a Critter of another kind in front of it, and otherwise hops forward. 
   // CritterInfo info: A CritterInfo object containing information about the surroundings of 
   //                   this Chameleon. 
   public Action getMove(CritterInfo info) {
      shouldBeGreen = !shouldBeGreen;
      Neighbor frontNeighbro = info.getFront();
      if (frontNeighbro == Neighbor.SAME) {
         return Action.LEFT;
      } else if (frontNeighbro == Neighbor.OTHER) {
         return Action.INFECT;
      } else {
         return Action.HOP;
      }
   }
   
   // Returns the color of the Chameleon, alternating between green and magenta on each move. 
   public Color getColor() {
      if (shouldBeGreen) {
         return Color.GREEN;
      } else {
         return Color.MAGENTA;
      }
   }
}