generalized tools/search model

search.js now provides for a .match and .unmatch method,
so it doesn't need to be called every time (in-line with the singleton
MetaSocket object model, meaning that callbacks are used and several
spaces can be matched at a time)

1 files changed, 19 insertions, 4 deletions

diff --git a/tools/search.js b/tools/search.js
index 7f681f0..78e0ee7 100644
--- a/tools/search.js
+++ b/tools/search.js
@@ -12,11 +12,13 @@ function getComp(index){
   return (element,needle) => (element[index] - needle[index] || element[1-index] - needle[1-index])
 }
 
-function Search(searchBlock){ // searchBlock should be a Space object.
+function Search(){ // searchBlock should be a Space object.
   this.tiles = {};     // Object which stores Spaces.
   this.sort = [[],[]]; // Vertically/horizontally sorted list of tiles for fast addition, deletion, and searching
+  this.spaces = [];
+  this.calls = [];
 
-  this.add = function(loc, space){ // loc should be [tileY,tileX] and space Space.
+  this.add = function(loc, space, send){ // loc should be [tileY,tileX] and space Space.
     this.tiles[loc] = space;
     let inds = Array(2); // Records horizontal and vertical indices for insertion. Then actually inserts the item.
     [0,1].forEach( ind => { // ind chooses y-or-x
@@ -29,8 +31,10 @@ function Search(searchBlock){ // searchBlock should be a Space object.
     block.forEach( (tile) => {
       searchspace.comb( this.tiles[tile], comb.add );
     });
-    coords = searchspace.search(searchBlock); // According to space docs, [] on failure and a character location on success
-    return vec.add(coords, searchspace.loc);
+    for (let i=0; i<this.spaces.length; i++){
+      let coords = searchspace.search(this.spaces[i]);
+      if (coords.length) this.calls[i](vec.add(coords, searchspace.loc), send, searchspace);
+    }
   }
   
   this.block = function(loc,inds,exclude){
@@ -79,6 +83,17 @@ function Search(searchBlock){ // searchBlock should be a Space object.
       else this.add(tile, tiles[tile]);
     }
   }
+
+  this.match = function(space, call){
+    this.spaces.push(space);
+    this.calls.push(call);
+  }
+
+  this.unmatch = function(space){
+    let ind = this.spaces.indexOf(space);
+    this.spaces.splice(ind, 1);
+    this.calls.splice(ind, 1);
+  }
 }
 
 module.exports = Search;