From fb63957bc4d44d9f96b62413be2b40005b26e8b8 Mon Sep 17 00:00:00 2001
From: Sailesh <saileshsimhadri@gmail.com>
Date: Wed, 19 Apr 2017 21:27:50 -0400
Subject: [PATCH] Implement evaluator that reads weights from file and returns
 value

---
 src/BaseEvaluator.java     | 29 +++++++++++++++++++++++++++++
 src/CheckersGameState.java |  1 +
 2 files changed, 30 insertions(+)
 create mode 100644 src/BaseEvaluator.java

diff --git a/src/BaseEvaluator.java b/src/BaseEvaluator.java
new file mode 100644
index 0000000..ed9c388
--- /dev/null
+++ b/src/BaseEvaluator.java
@@ -0,0 +1,29 @@
+
+public class BaseEvaluator implements Evaluator{
+
+    WeightsParser wp;
+    String file;
+    double[] weights;
+
+    public BaseEvaluator(String file){
+        this.wp = new WeightsParser();
+        this.file = file;
+        this.weights = this.wp.getWeights(file);
+    }
+
+    private double dot(double[] a1, double[] a2){
+        double res = 0;
+        for(int i = 0; i < a1.length; i++){
+            res += (a1[i] * a2[i]);
+        }
+        return res;
+    }
+
+    public double evaluate(CheckersGameState s, int player){
+        double[] params = s.getFeatures(player);
+        return dot(this.weights, params);
+    }
+
+
+}
+
diff --git a/src/CheckersGameState.java b/src/CheckersGameState.java
index 1c3210f..fd1cca3 100644
--- a/src/CheckersGameState.java
+++ b/src/CheckersGameState.java
@@ -5,4 +5,5 @@ public interface CheckersGameState {
 CheckersGameState result ( Move x );
 boolean isTerminal();
 void printState ();
+public double[] getFeatures(int player);
 }