tdps.lic - Corrected tdp cost calculation method

The previous method gave some errors with certain racial modifiers, the correction fixes that and should now give exact calculations.

tdps.lic

@@ -20,9 +20,7 @@ def cost(current, modifier)
   cost = 0
   start = 10 - 2 * modifier
   for i in start..current - 1 do
-    mult = i < 100 ? 3 : 15
-    mod = (modifier.to_f * i / 2).truncate
-    cost += (i * mult) + mod
+    cost += i * (i < 100 ? 3 : 15) + modifier * (i / 2).floor(0)
   end
   return cost
 end
@@ -52,7 +50,7 @@ else
 end
 
 # Calcuate total TDPs spent for each stat
-costs = []
+costs = Array.new(8)
 for i in 0..7
   costs[i] = cost(stats[i], mods[i])
 end