From 0515d0456a490a0b5925e71ca27f89c8de8342ca Mon Sep 17 00:00:00 2001
From: Lisa <misslisazhou@gmail.com>
Date: Mon, 23 May 2016 00:14:13 -1000
Subject: [PATCH 1/6] Pass Spell tests

---
 constructors.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/constructors.js b/constructors.js
index d0bf11a..a0167d4 100644
--- a/constructors.js
+++ b/constructors.js
@@ -10,7 +10,11 @@
  * @property {string} description
  * @method   printDetails
  */
-
+  function Spell(name, cost, description) {
+    this.name = name;
+    this.cost = cost;
+    this.description = description;
+  }
   /**
    * Returns a string of all of the spell's details.
    * The format doesn't matter, as long as it contains the spell name, cost, and description.
@@ -18,6 +22,9 @@
    * @name getDetails
    * @return {string} details containing all of the spells information.
    */
+    Spell.prototype.getDetails = function () {
+      return "You cast " + this.name + " which cost " + this.cost + " and does " + this.description;
+    };
 
 /**
  * A spell that deals damage.

From e4570abcd84d9337d062a2bc3ce94a1c9236d581 Mon Sep 17 00:00:00 2001
From: Lisa <misslisazhou@gmail.com>
Date: Mon, 23 May 2016 00:23:07 -1000
Subject: [PATCH 2/6] Pass DamageSpell tests

---
 constructors.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/constructors.js b/constructors.js
index a0167d4..3f3e8b2 100644
--- a/constructors.js
+++ b/constructors.js
@@ -50,6 +50,11 @@
  * @property {number} damage
  * @property {string} description
  */
+  function DamageSpell(name, cost, damage, description) {
+    Spell.call(this, name, cost, description);
+    this.damage = damage;
+  }
+  DamageSpell.prototype = Object.create(Spell.prototype);
 
 /**
  * Now that you've created some spells, let's create

From 467606a05e3f757ba3061c967d0eb9e6a23e0383 Mon Sep 17 00:00:00 2001
From: Lisa <misslisazhou@gmail.com>
Date: Mon, 23 May 2016 00:31:55 -1000
Subject: [PATCH 3/6] Create Spellcaster function and pass 'instance object'
 tests

---
 constructors.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/constructors.js b/constructors.js
index 3f3e8b2..7639b8d 100644
--- a/constructors.js
+++ b/constructors.js
@@ -72,6 +72,12 @@
  * @method  spendMana
  * @method  invoke
  */
+  function Spellcaster(name, health, mana) {
+    this.name = name;
+    this.health = health;
+    this.mana = mana;
+    this.isAlive = true;
+  }
 
   /**
    * @method inflictDamage

From 37f3451a0c0860f7db3c2359dc78087cd4c3c511 Mon Sep 17 00:00:00 2001
From: Lisa <misslisazhou@gmail.com>
Date: Mon, 23 May 2016 00:33:16 -1000
Subject: [PATCH 4/6] Pass '.inflictDamage' tests for Spellcaster function

---
 constructors.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/constructors.js b/constructors.js
index 7639b8d..0487a61 100644
--- a/constructors.js
+++ b/constructors.js
@@ -89,6 +89,13 @@
    *
    * @param  {number} damage  Amount of damage to deal to the spellcaster
    */
+    Spellcaster.prototype.inflictDamage = function (damage) {
+      this.health -=damage;
+      if (this.health < damage){
+        this.health = 0;
+        this.isAlive = false;
+      }
+    };
 
   /**
    * @method spendMana

From 762df8f9cac11b7401172d139ca8ab71df280322 Mon Sep 17 00:00:00 2001
From: Lisa <misslisazhou@gmail.com>
Date: Mon, 23 May 2016 00:43:40 -1000
Subject: [PATCH 5/6] Pass '.spendMana' tests for Spellcaster function

---
 constructors.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/constructors.js b/constructors.js
index 0487a61..fd94e28 100644
--- a/constructors.js
+++ b/constructors.js
@@ -106,6 +106,14 @@
    * @param  {number} cost      The amount of mana to spend.
    * @return {boolean} success  Whether mana was successfully spent.
    */
+    Spellcaster.prototype.spendMana = function (cost) {
+      if (this.mana > cost){
+        this.mana -=cost;
+        return true;
+      }else{
+        return false;
+      }
+    };
 
   /**
    * @method invoke

From dfc5b552259a2ad4eebd65c989f77db31850343f Mon Sep 17 00:00:00 2001
From: Lisa <misslisazhou@gmail.com>
Date: Tue, 24 May 2016 23:01:37 -1000
Subject: [PATCH 6/6] update .inflictDamage and .spendMana method as well as
 pass tests for .invoke method

---
 constructors.js | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/constructors.js b/constructors.js
index fd94e28..12a0ead 100644
--- a/constructors.js
+++ b/constructors.js
@@ -91,7 +91,7 @@
    */
     Spellcaster.prototype.inflictDamage = function (damage) {
       this.health -=damage;
-      if (this.health < damage){
+      if (this.health <= damage){
         this.health = 0;
         this.isAlive = false;
       }
@@ -107,7 +107,7 @@
    * @return {boolean} success  Whether mana was successfully spent.
    */
     Spellcaster.prototype.spendMana = function (cost) {
-      if (this.mana > cost){
+      if (this.mana >= cost){
         this.mana -=cost;
         return true;
       }else{
@@ -141,3 +141,22 @@
    * @param  {Spellcaster} target         The spell target to be inflicted.
    * @return {boolean}                    Whether the spell was successfully cast.
    */
+    Spellcaster.prototype.invoke = function (spell, target) {
+      if (!(spell instanceof Spell)){
+        return false;
+      }
+
+      if(spell instanceof DamageSpell && (!(target instanceof Spellcaster))){
+        return false;
+      }
+
+      if (this.mana >= spell.cost){
+        this.spendMana(spell.cost);
+        if (spell instanceof DamageSpell){
+          target.inflictDamage(spell.damage);
+        }
+        return true;
+      }else{
+        return false;
+      }
+    };