EJS CH7 Exercises

// Artificial Stupidity
function SmartPlantEater() {
  this.energy = 20;
  this.last_reproduction = 0;
}
SmartPlantEater.prototype.act = function(view) {
  var space = view.find(" ");
  if (this.energy > 60 && space && this.last_reproduction > 60) {
    this.last_reproduction = 0;
    return {type: "reproduce", direction: space};
  }
  var plant = view.find("*");
  if (plant && view.findAll("*").length >= 2) {
    this.last_reproduction += 1;
    return {type: "eat", direction: plant};
  }
  if (space) {
    this.last_reproduction += 1;
    return {type: "move", direction: space};
  }
};

animateWorld(new LifelikeWorld(
  ["############################",
   "#####                 ######",
   "##   ***                **##",
   "#   *##**         **  O  *##",
   "#    ***     O    ##**    *#",
   "#       O         ##***    #",
   "#                 ##**     #",
   "#   O       #*             #",
   "#*          #**       O    #",
   "#***        ##**    O    **#",
   "##****     ###***       *###",
   "############################"],
  {"#": Wall,
   "O": SmartPlantEater,
   "*": Plant}
));



// Preditors
function Tiger() {
  this.energy = 100;
  this.last_reproduction = 0;
}
Tiger.prototype.act = function(view) {
  var space = view.findAll(" ").length > 2 ? view.find(" ") : view.find("*");
  if (this.energy > 60 && space && this.last_reproduction > 60) {
    this.last_reproduction = 0;
    return {type: "reproduce", direction: space};
  }
  var plantEater = view.find("O");
  if (plantEater) {
    this.last_reproduction += 1;
    return {type: "eat", direction: plantEater};
  }
  if (space) {
    this.last_reproduction += 1;
    return {type: "move", direction: space};
  }
};

animateWorld(new LifelikeWorld(
  ["####################################################",
   "#                 ####         ****              ###",
   "#   *  @  ##                 ########       OO    ##",
   "#   *    ##        O O                 ****       *#",
   "#       ##*                        ##########     *#",
   "#      ##***  *         ****                     **#",
   "#* **  #  *  ***      #########                  **#",
   "#* **  #      *               #   *              **#",
   "#     ##              #   O   #  ***          ######",
   "#*            @       #       #   *        O  #    #",
   "#*                    #  ######                 ** #",
   "###          ****          ***                  ** #",
   "#       O                        @         O       #",
   "#   *     ##  ##  ##  ##               ###      *  #",
   "#   **         #              *       #####  O     #",
   "##  **  O   O  #  #    ***  ***        ###      ** #",
   "###               #   *****                    ****#",
   "####################################################"],
  {"#": Wall,
   "@": Tiger,
   "O": SmartPlantEater, // from previous exercise
   "*": Plant}
));