1 files changed, 54 insertions, 0 deletions
diff --git a/Week14 Route 66/src/com/camilstaps/route66/Overviewer.java b/Week14 Route 66/src/com/camilstaps/route66/Overviewer.java
new file mode 100644
index 0000000..762ded1
--- /dev/null
+++ b/Week14 Route 66/src/com/camilstaps/route66/Overviewer.java
@@ -0,0 +1,54 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package com.camilstaps.route66;
+
+import OO14route66.Car;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ *
+ * @author pieterkoopman
+ */
+public class Overviewer {
+    
+    private static Overviewer instance;
+    
+    Map<Car, Integer> locations;
+    
+    protected Overviewer() {
+        locations = new HashMap<>();
+    }
+    
+    public static Overviewer getInstance() {
+        if (instance == null) {
+            instance = new Overviewer();
+        }
+        return instance;
+    }
+    
+    public synchronized void setLocation(Car car, int location) {
+        if (locations.containsKey(car)) {
+            locations.remove(car);
+        } 
+        locations.put(car, location);
+    }
+    
+    public synchronized boolean isSafeLocation(Car car, int requested_location) {
+        for (Map.Entry<Car, Integer> location : locations.entrySet()) {
+            Car that_car = location.getKey();
+            if (that_car != car && 
+                    that_car.getDirection() == car.getDirection() &&
+                    that_car.getLocation() > requested_location &&
+                    that_car.getLocation() < requested_location + Car.CARLENGTH + Car.MINCARSPACE) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+}