Upload files to "/"

PathNode.java

@@ -0,0 +1,35 @@
+package xyz.nodrop.farmingtools.client.pathfinding;
+
+import net.minecraft.util.math.BlockPos;
+
+/**
+ * Single node in the A* search graph.
+ * Comparable by f = g + h so it can be used directly in a PriorityQueue.
+ */
+public class PathNode implements Comparable<PathNode> {
+
+    public final BlockPos pos;
+    public final PathNode parent;
+
+    /** Cost from start to this node. */
+    public final double g;
+
+    /** Heuristic cost estimate from this node to goal. */
+    public final double h;
+
+    public PathNode(BlockPos pos, PathNode parent, double g, double h) {
+        this.pos    = pos;
+        this.parent = parent;
+        this.g      = g;
+        this.h      = h;
+    }
+
+    public double f() {
+        return g + h;
+    }
+
+    @Override
+    public int compareTo(PathNode other) {
+        return Double.compare(this.f(), other.f());
+    }
+}