From ed1603283db986d5838a7d3abefd7aac27ac70f9 Mon Sep 17 00:00:00 2001
From: Holden Rohrer <holden.rohrer@gmail.com>
Date: Thu, 19 Dec 2019 21:02:33 -0500
Subject: added search.js for jarvis (untested)

---
 examples/search.js | 30 ++++++++++++++++++++++++++++++
 package-lock.json  |  5 +++++
 package.json       |  1 +
 3 files changed, 36 insertions(+)
 create mode 100644 examples/search.js

diff --git a/examples/search.js b/examples/search.js
new file mode 100644
index 0000000..d119fd3
--- /dev/null
+++ b/examples/search.js
@@ -0,0 +1,30 @@
+// A search utility for arbitrary (new) tileUpdates.
+// Provides `add` functionality, which auto-checks adjacency with other blocks. Subsequently, it searches them
+// Provides `del` functionality, which should be used with auto-deletion
+// As of now, it assumes that no search block is larger than 8x16, or the size of a block.
+
+const bs = require('binary-search');
+
+function getComp(index){
+  return (element,needle) => element[index] - needle[index];
+}
+
+
+function Search(searchBlock){ // searchBlock should be a Space object.
+  this.tiles = {};    // Object which stores Spaces.
+  this.vertsort = []; // Vertically sorted list of tiles for fast addition, deletion, and searching
+  this.horisort = []; // Horizantally sorted list
+
+  this.add = function(loc, space){ // loc should be [tileY,tileX] and space Space.
+    this.tiles[loc] = space;
+    vertsort.insert(loc, bs(vertsort, loc, getComp(0))); // TEST
+    horisort.insert(loc, bs(horisort, loc, getComp(1)));
+  }
+
+  this.del = function(loc){
+    delete tiles[loc];
+    vertsort.remove(bs(vertsort, loc, getComp(0))); // TEST
+    horisort.remove(bs(horisort, loc, getComp(1)));
+  }
+}
+module.exports = Search;
diff --git a/package-lock.json b/package-lock.json
index 5514db8..7ca9bdf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,6 +9,11 @@
       "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.1.tgz",
       "integrity": "sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ=="
     },
+    "binary-search": {
+      "version": "1.3.6",
+      "resolved": "https://registry.npmjs.org/binary-search/-/binary-search-1.3.6.tgz",
+      "integrity": "sha512-nbE1WxOTTrUWIfsfZ4aHGYu5DOuNkbxGokjV6Z2kxfJK3uaAb8zNK1muzOeipoLHZjInT4Br88BHpzevc681xA=="
+    },
     "events": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/events/-/events-3.0.0.tgz",
diff --git a/package.json b/package.json
index d84fc9a..63cd0ce 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
   },
   "homepage": "https://github.com/feynmansfedora/ywot-clean#readme",
   "dependencies": {
+    "binary-search": "^1.3.6",
     "events": ">=3.0.0",
     "json": ">=9.0.6",
     "ws": ">=7.2.0"
-- 
cgit