Refactoring of just about everything, interface beginning to come together

app/js/shipyard/module-shipyard.js

@@ -94,4 +94,40 @@ angular.module('shipyard', [])
     }
 
     return  groupToLabel;
-  });
+  })
+  .factory('CalcJumpRange', function() {
+    /**
+     * Calculate the maximum single jump range based on mass and a specific FSD
+     * @param  {number} mass Mass of a ship: laden, unlanden, partially laden, etc
+     * @param  {object} fsd  The FDS object/component with maxfuel, fuelmul, fuelpower, optmass
+     * @param  {number} fuel Optional - The fuel consumed during the jump (must be less than the drives max fuel per jump)
+     * @return {number}      Distance in Light Years
+     */
+    return function(mass, fsd, fuel) {
+      return Math.pow(Math.min(fuel || Infinity, fsd.maxfuel) / fsd.fuelmul, 1 / fsd.fuelpower ) * fsd.optmass / mass;
+    };
+  })
+  .factory('CalcShieldStrength', function() {
+     /**
+     * Calculate the a ships shield strength based on mass, shield generator and shield boosters used.
+     *
+     * @private
+     * @param  {number} mass       Current mass of the ship
+     * @param  {number} shields    Base Shield strength MJ for ship
+     * @param  {object} sg         The shield generator used
+     * @param  {number} multiplier Shield multiplier for ship (1 + shield boosters if any)
+     * @return {number}            Approximate shield strengh in MJ
+     */
+    return function (mass, shields, sg, multiplier) {
+      if (mass <= sg.minmass) {
+        return shields * multiplier * sg.minmul;
+      }
+      if (mass < sg.optmass) {
+        return shields * multiplier * (sg.minmul + (mass - sg.minmass) / (sg.optmass - sg.minmass) * (sg.optmul - sg.minmul));
+      }
+      if (mass < sg.maxmass) {
+        return shields * multiplier * (sg.optmul + (mass - sg.optmass) / (sg.maxmass - sg.optmass) * (sg.maxmul - sg.optmul));
+      }
+      return shields * multiplier * sg.maxmul;
+    }
+  });