export some scoring functions for use in testing

lib/app/scoring.js

@@ -1,5 +1,5 @@
 // Generated by CoffeeScript 1.3.3
-var MODIFIER, async, content, cron, expModifier, helpers, hpModifier, model, moment, score, setModel, setupNotifications, updateStats, user, _;
+var MODIFIER, async, content, cron, expModifier, helpers, hpModifier, model, moment, score, setModel, setupNotifications, taskDeltaFormula, updateStats, user, _;
 
 async = require('async');
 
@@ -68,22 +68,66 @@ setupNotifications = function() {
   });
 };
 
-expModifier = function(value) {
-  var dmg, modified;
-  dmg = user.get('items.weapon') * MODIFIER;
-  dmg += (user.get('stats.lvl') - 1) * MODIFIER;
+/* 
+Calculates Exp & GP modification based on weapon & lvl
+{value} task.value for gain
+{modifiers} may manually pass in stats as {weapon, exp}. This is used for testing
+*/
+
+
+expModifier = function(value, modifiers) {
+  var dmg, lvl, modified, weapon, _ref;
+  if (modifiers == null) {
+    modifiers = null;
+  }
+  _ref = [user.get('items.weapon'), user.get('stats.lvl')], weapon = _ref[0], lvl = _ref[1];
+  if (modifiers) {
+    weapon = modifiers.weapon, lvl = modifiers.lvl;
+  }
+  dmg = weapon * MODIFIER;
+  dmg += (lvl - 1) * MODIFIER;
   modified = value + (value * dmg);
   return modified;
 };
 
-hpModifier = function(value) {
-  var ac, modified;
-  ac = user.get('items.armor') * MODIFIER;
-  ac += (user.get('stats.lvl') - 1) * MODIFIER;
+/* 
+Calculates HP-loss modification based on armor & lvl
+{value} task.value which is hurting us
+{modifiers} may manually pass in modifier as {armor, lvl}. This is used for testing
+*/
+
+
+hpModifier = function(value, modifiers) {
+  var ac, armor, lvl, modified, _ref;
+  if (modifiers == null) {
+    modifiers = null;
+  }
+  _ref = [user.get('items.armor'), user.get('stats.lvl')], armor = _ref[0], lvl = _ref[1];
+  if (modifiers) {
+    armor = modifiers.armor, lvl = modifiers.lvl;
+  }
+  ac = armor * MODIFIER;
+  ac += (lvl - 1) * MODIFIER;
   modified = value - (value * ac);
   return modified;
 };
 
+/*
+Calculates the next task.value based on direction
+For negative values, use a line: something like y=-.1x+1
+For positibe values, taper off with inverse log: y=.9^x
+Would love to use inverse log for the whole thing, but after 13 fails it hits infinity. Revisit this formula later
+{currentValue} the current value of the task, determines it's next value
+{direction} 'up' or 'down'
+*/
+
+
+taskDeltaFormula = function(currentValue, direction) {
+  var delta, sign;
+  sign = direction === "up" ? 1 : -1;
+  return delta = currentValue < 0 ? (-0.1 * currentValue + 1) * sign : (Math.pow(0.9, currentValue)) * sign;
+};
+
 updateStats = function(stats) {
   var money, tnl;
   if (user.get('stats.lvl') === 0) {
@@ -127,7 +171,7 @@ updateStats = function(stats) {
 };
 
 score = function(taskId, direction, options) {
-  var adjustvalue, delta, exp, hp, lvl, modified, money, num, sign, task, taskObj, taskPath, type, userObj, value, _ref, _ref1, _ref2;
+  var adjustvalue, delta, exp, hp, lvl, modified, money, num, task, taskObj, taskPath, type, userObj, value, _ref, _ref1, _ref2;
   if (options == null) {
     options = {
       cron: false,
@@ -155,8 +199,7 @@ score = function(taskId, direction, options) {
     });
     return;
   }
-  sign = direction === "up" ? 1 : -1;
-  delta = value < 0 ? (-0.1 * value + 1) * sign : (Math.pow(0.9, value)) * sign;
+  delta = taskDeltaFormula(value, direction);
   delta *= options.times;
   adjustvalue = type !== 'reward';
   if ((type === 'habit') && (taskObj.up === false || taskObj.down === false)) {
@@ -284,8 +327,11 @@ cron = function() {
 };
 
 module.exports = {
-  MODIFIER: MODIFIER,
   setModel: setModel,
+  MODIFIER: MODIFIER,
   score: score,
-  cron: cron
+  cron: cron,
+  expModifier: expModifier,
+  hpModifier: hpModifier,
+  taskDeltaFormula: taskDeltaFormula
 };