Added math stuff to calculate price based on points (thanks everett)

src/main/java/com/alttd/objects/Price.java

@@ -3,11 +3,17 @@ package com.alttd.objects;
 import com.alttd.config.Config;
 import com.alttd.util.Logger;
 import com.alttd.util.Utilities;
+import org.apache.commons.math3.analysis.function.StepFunction;
+import org.apache.commons.math3.analysis.integration.TrapezoidIntegrator;
 
 public final class Price {
     private final double price;
     private final int points;
 
+    double x_mult[] = {0, 500, 2000, 4000};
+    double y_mult[] = {1.0, 1.5, 2.5, 5.0};
+    StepFunction multiplierModel = new StepFunction(x_mult, y_mult);
+
     public Price(double price) {
         this.price = price;
         for (int key : Config.pointsRangeMap.keySet()) {
@@ -28,6 +34,12 @@ public final class Price {
         return (Utilities.round(price * multiplier, 2));
     }
 
+    public double calculatePriceThing(int oldPoints, int transPts) {
+        // Compute numerical integration to determine price
+        TrapezoidIntegrator trapez = new TrapezoidIntegrator();
+        return (price * trapez.integrate(10, multiplierModel, oldPoints, oldPoints + transPts));
+    }
+
     public int getPoints() {
         return (points);
     }