Add PathfinderGoalSelector for diff visibility

src/main/java/net/minecraft/server/PathfinderGoalSelector.java

@@ -0,0 +1,91 @@
+package net.minecraft.server;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+
+public class PathfinderGoalSelector {
+
+    private ArrayList a = new ArrayList();
+    private ArrayList b = new ArrayList();
+
+    public PathfinderGoalSelector() {}
+
+    public void a(int i, PathfinderGoal pathfindergoal) {
+        this.a.add(new PathfinderGoalSelectorItem(this, i, pathfindergoal));
+    }
+
+    public void a() {
+        ArrayList arraylist = new ArrayList();
+        Iterator iterator = this.a.iterator();
+
+        while (iterator.hasNext()) {
+            PathfinderGoalSelectorItem pathfindergoalselectoritem = (PathfinderGoalSelectorItem) iterator.next();
+            boolean flag = this.b.contains(pathfindergoalselectoritem);
+
+            if (flag) {
+                if (this.a(pathfindergoalselectoritem) && pathfindergoalselectoritem.a.b()) {
+                    continue;
+                }
+
+                pathfindergoalselectoritem.a.d();
+                this.b.remove(pathfindergoalselectoritem);
+            }
+
+            if (this.a(pathfindergoalselectoritem) && pathfindergoalselectoritem.a.a()) {
+                arraylist.add(pathfindergoalselectoritem);
+                this.b.add(pathfindergoalselectoritem);
+            }
+        }
+
+        boolean flag1 = false;
+
+        if (flag1 && arraylist.size() > 0) {
+            System.out.println("Starting: ");
+        }
+
+        Iterator iterator1;
+        PathfinderGoalSelectorItem pathfindergoalselectoritem1;
+
+        for (iterator1 = arraylist.iterator(); iterator1.hasNext(); pathfindergoalselectoritem1.a.c()) {
+            pathfindergoalselectoritem1 = (PathfinderGoalSelectorItem) iterator1.next();
+            if (flag1) {
+                System.out.println(pathfindergoalselectoritem1.a.toString() + ", ");
+            }
+        }
+
+        if (flag1 && this.b.size() > 0) {
+            System.out.println("Running: ");
+        }
+
+        for (iterator1 = this.b.iterator(); iterator1.hasNext(); pathfindergoalselectoritem1.a.e()) {
+            pathfindergoalselectoritem1 = (PathfinderGoalSelectorItem) iterator1.next();
+            if (flag1) {
+                System.out.println(pathfindergoalselectoritem1.a.toString());
+            }
+        }
+    }
+
+    private boolean a(PathfinderGoalSelectorItem pathfindergoalselectoritem) {
+        Iterator iterator = this.a.iterator();
+
+        while (iterator.hasNext()) {
+            PathfinderGoalSelectorItem pathfindergoalselectoritem1 = (PathfinderGoalSelectorItem) iterator.next();
+
+            if (pathfindergoalselectoritem1 != pathfindergoalselectoritem) {
+                if (pathfindergoalselectoritem.b >= pathfindergoalselectoritem1.b) {
+                    if (this.b.contains(pathfindergoalselectoritem1) && !this.a(pathfindergoalselectoritem, pathfindergoalselectoritem1)) {
+                        return false;
+                    }
+                } else if (this.b.contains(pathfindergoalselectoritem1) && !pathfindergoalselectoritem1.a.g()) {
+                    return false;
+                }
+            }
+        }
+
+        return true;
+    }
+
+    private boolean a(PathfinderGoalSelectorItem pathfindergoalselectoritem, PathfinderGoalSelectorItem pathfindergoalselectoritem1) {
+        return (pathfindergoalselectoritem.a.h() & pathfindergoalselectoritem1.a.h()) == 0;
+    }
+}