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chapter7.js
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chapter7.js
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// Your code here
var directionArray = "se s sw w nw n ne e".split(" ")
console.log(directionArray);
var randomElement = function(array) {
return array[Math.floor(Math.random() * array.length)];
}
console.log(randomElement(directionArray));
function SmartPlantEater() {
this.energy = 20;
this.justEatenCounter = 0;
this.direction = randomElement(directionArray);
}
SmartPlantEater.prototype.act = function(view) {
var space = view.find(" ");
if (this.energy > 60 && space) {
this.justEatenCounter -=1;
return {type: "reproduce", direction: space};
}
var plant = view.find("*");
if (plant && this.justEatenCounter <= 0) {
this.justEatenCounter = 1;
return {type: "eat", direction: plant};
}
if (space) {
if (view.look(this.direction) != " ") {
this.direction = space;
}
this.justEatenCounter -= 1;
return {type: "move", direction: this.direction};
}
};
animateWorld(new LifelikeWorld(
["############################",
"##### ######",
"## *** **##",
"# *##** ** O *##",
"# *** O ##** *#",
"# O ##*** #",
"# ##** #",
"# O #* #",
"#* #** O #",
"#*** ##** O **#",
"##**** ###*** *###",
"############################"],
{"#": Wall,
"O": SmartPlantEater,
"*": Plant}
));
//Tiger
// Your code here
function Tiger() {
this.energy = 60;
this.direction = randomElement(directionArray);
this.prayObservations = [0,0,0,0,0,0]
this.babyObservations = [0,0,0,0,0,0,0,0,0,0]
}
Tiger.prototype.shouldEat = function() {
var sumPray = this.prayObservations.reduce(function (total,current) {
return total+current;
});
var prayDensity = sumPray / this.prayObservations.length;
return (prayDensity >= .4 && this.energy < 30);
}
Tiger.prototype.shouldReproduce = function() {
return this.babyObservations.indexOf(1) == -1;
}
Tiger.prototype.act = function(view) {
var space = view.find(" ");
if (space && this.energy > 150) {
console.log("HAVING A BABY!!!");
this.babyObservations.shift();
this.babyObservations.push(1);
return {type: "reproduce", direction: space}
}
var pray = view.find("O");
if (pray) {
if (this.prayObservations.length > 5) {
this.prayObservations.shift();
}
this.prayObservations.push(1);
}
if (pray && (this.shouldEat() || this.energy < 50)) {
console.log(this.energy);
return {type: "eat", direction: pray}
}
if (space) {
if (this.prayObservations.length > 5) {
this.prayObservations.shift();
}
this.prayObservations.push(0);
if (view.look(this.direction) != " ") {
this.direction = space;
}
return {type: "move", direction: this.direction}
}
}
animateWorld(new LifelikeWorld(
["####################################################",
"# #### **** ###",
"# * @ ## ######## OO ##",
"# * ## O O **** *#",
"# ##* ########## *#",
"# ##*** * **** **#",
"#* ** # * *** ######### **#",
"#* ** # * # * **#",
"# ## # O # *** ######",
"#* @ # # * O # #",
"#* # ###### ** #",
"### **** *** ** #",
"# O @ O #",
"# * ## ## ## ## ### * #",
"# ** # * ##### O #",
"## ** O O # # *** *** ### ** #",
"### # ***** ****#",
"####################################################"],
{"#": Wall,
"@": Tiger,
"O": SmartPlantEater, // from previous exercise
"*": Plant}
));